Five CubeSats altitude

newer
MAREA a School Activity You Can Do

Masahiro Arai

28 Oct 2012 28 Oct '12

9:43 a.m.

I'm ploting altitude of five CubeSats which were deployed from ISS. The results is interesting. First deployment satellites are lower altitude than laters. I guess this is related to initial velocity at deployment.

First Deployment deployment order: #1 WE WISH, #2 RAIKO altitude: WE WISH < RAIKO

Second Deployment deployment order: #1 TechEdSat, #2 F1, #3 FITSAT-1 altitude: TechEdSat < F1 < FITSAT-1

I'm also ploating ARISSat-1 on the same chart as its time line align to the five CubeSats deployment date. The chart shows five CubeSats have large decay rate than ARISSat-1.

You can see the chart on the following URL.

http://www.ne.jp/asahi/m-arai/gkz/5CubeSats_Altitude.png

Masa JN1GKZ Tokyo Japna

Show replies by date

Trevor .

28 Oct 28 Oct

10:06 a.m.

New subject: [amsat-bb] Re: Five CubeSats altitude

Interesting chart, it suggests rate of decay is size/mass dependent. RAIKO which is a 2U CubeSat and was deployed 2nd is now higher than all the others.

73 Trevor M5AKA

--- On Sun, 28/10/12, Masahiro Arai m-arai@a.email.ne.jp wrote:

...

From: Masahiro Arai m-arai@a.email.ne.jp Subject: [amsat-bb] Five CubeSats altitude To: amsat-bb@amsat.org Date: Sunday, 28 October, 2012, 13:43

I'm ploting altitude of five CubeSats which were deployed from ISS. The results is interesting. First deployment satellites are lower altitude than laters. I guess this is related to initial velocity at deployment.

First Deployment deployment order: #1 WE WISH, #2 RAIKO altitude: WE WISH < RAIKO

Second Deployment deployment order: #1 TechEdSat, #2 F1, #3 FITSAT-1 altitude: TechEdSat < F1 < FITSAT-1

I'm also ploating ARISSat-1 on the same chart as its time line align to the five CubeSats deployment date. The chart shows five CubeSats have large decay rate than ARISSat-1.

You can see the chart on the following URL.

http://www.ne.jp/asahi/m-arai/gkz/5CubeSats_Altitude.png

73

Masa JN1GKZ Tokyo Japna

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

tanaka＠fit.ac.jp

6 Nov 6 Nov

12:32 a.m.

New subject: [amsat-bb] 5.8GHz transmission from NIWAKA

Dear Ham Friends,

We will start the experiments of 5.8GHz transmission of your place. Please advice the best time for your place and also let me know your latitude and longitude. Details are: http://www.fit.ac.jp/~tanaka/fitsat.shtml 73 Takushi JA6AVG

Mike Seguin N1JEZ

8 Nov 8 Nov

7:29 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Hello Takushi,

Here are the best times for me to listen for FitSat on 5.8 GHz. My Grid locator is FN34jm.

73, Mike, N1JEZ

FITSAT 1 == Nov 9, 2012 Time Azimuth Elevation 11:34:33 196.4° 3.6° 11:35:33 188.6° 7.9° 11:36:33 176.8° 12.9° 11:37:33 158.4° 17.8° 11:38:33 133.5° 19.9° 11:39:33 109.4° 17.3° 11:40:33 92.1° 12.4° 11:41:33 81.0° 7.5° 11:42:33 73.7° 3.4°

13:09:33 246.6° 1.2° 13:10:33 248.0° 5.6° 13:11:33 250.3° 11.5° 13:12:33 254.3° 20.5° 13:13:33 264.8° 37.3° 13:14:33 319.1° 63.7° 13:15:33 35.4° 42.9° 13:16:33 49.3° 23.5° 13:17:33 54.1° 13.3° 13:18:33 56.7° 7.0° 13:19:33 58.3° 2.3°

14:46:33 280.7° 0.7° 14:47:33 285.5° 4.6° 14:48:33 292.7° 9.3° 14:49:33 304.2° 15.1° 14:50:33 323.3° 21.5° 14:51:33 351.9° 24.9° 14:52:33 20.5° 21.6° 14:53:33 39.7° 15.2° 14:54:33 51.2° 9.4° 14:55:33 58.4° 4.6° 14:56:33 63.3° 0.8°

FITSAT 1 == Nov 10, 2012 Time Azimuth Elevation 12:16:33 233.7° 0.7° 12:17:33 233.2° 5.0° 12:18:33 232.4° 10.8° 12:19:33 230.7° 19.5° 12:20:33 226.0° 36.0° 12:21:33 190.3° 71.3° 12:22:33 73.9° 49.0° 12:23:33 64.8° 25.5° 12:24:33 62.3° 14.3° 12:25:33 61.2° 7.6° 12:26:33 60.6° 2.8°

13:53:33 272.2° 1.2° 13:54:33 276.7° 5.4° 13:55:33 283.5° 10.5° 13:56:33 294.9° 17.2° 13:57:33 315.5° 25.2° 13:58:33 348.7° 29.2° 13:59:33 20.3° 24.0° 14:00:33 39.1° 16.1° 14:01:33 49.5° 9.7° 14:02:33 55.9° 4.8° 14:03:33 60.1° 0.8°

FITSAT 1 == Nov 11, 2012 Time Azimuth Elevation 11:24:33 218.0° 4.0° 11:25:33 214.1° 9.1° 11:26:33 207.4° 16.3° 11:27:33 193.2° 27.2° 11:28:33 158.1° 40.2° 11:29:33 107.9° 35.9° 11:30:33 83.3° 22.6° 11:31:33 73.0° 13.4° 11:32:33 67.8° 7.2° 11:33:33 64.7° 2.6°

13:00:33 262.4° 2.1° 13:01:33 266.1° 6.6° 13:02:33 272.0° 12.5° 13:03:33 282.8° 21.0° 13:04:33 306.2° 32.6° 13:05:33 350.6° 37.5° 13:06:33 26.3° 27.3° 13:07:33 42.6° 17.0° 13:08:33 50.7° 9.9° 13:09:33 55.5° 4.7° 13:10:33 58.7° 0.6°

14:37:33 290.6° 1.2° 14:38:33 296.0° 5.1° 14:39:33 304.0° 9.8° 14:40:33 316.6° 15.4° 14:41:33 337.0° 21.0° 14:42:33 4.9° 23.0° 14:43:33 30.9° 19.3° 14:44:33 48.3° 13.4° 14:45:33 59.0° 8.1° 14:46:33 66.0° 3.7°

----- Original Message ----- From: tanaka@fit.ac.jp Subject: [amsat-bb] 5.8GHz transmission from NIWAKA

...

Dear Ham Friends,

We will start the experiments of 5.8GHz transmission of your place. Please advice the best time for your place and also let me know your latitude and longitude. Details are: http://www.fit.ac.jp/~tanaka/fitsat.shtml 73 Takushi JA6AVG

Mike Seguin N1JEZ

7:57 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

I should have mentioned these times are UTC.

Mike

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Hello Takushi,

Here are the best times for me to listen for FitSat on 5.8 GHz. My Grid locator is FN34jm.

73, Mike, N1JEZ

tanaka＠fit.ac.jp

9 Nov 9 Nov

3:07 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

----- Original Message -----

...

  Hello Takushi,

  Here are the best times for me to listen for FitSat on 5.8 GHz.
  My Grid locator is FN34jm.

  73,
  Mike, N1JEZ

  FITSAT 1 == Nov  9, 2012
  Time Azimuth Elevation
  11:34:33 196.4° 3.6°
  11:35:33 188.6° 7.9°
  11:36:33 176.8° 12.9°
  11:37:33 158.4° 17.8°
  11:38:33 133.5° 19.9°
  11:39:33 109.4° 17.3°
  11:40:33 92.1° 12.4°
  11:41:33 81.0° 7.5°
  11:42:33 73.7° 3.4°

  13:09:33 246.6° 1.2°
  13:10:33 248.0° 5.6°
  13:11:33 250.3° 11.5°
  13:12:33 254.3° 20.5°
  13:13:33 264.8° 37.3°
  13:14:33 319.1° 63.7°
  13:15:33 35.4° 42.9°
  13:16:33 49.3° 23.5°
  13:17:33 54.1° 13.3°
  13:18:33 56.7° 7.0°
  13:19:33 58.3° 2.3°

  14:46:33 280.7° 0.7°
  14:47:33 285.5° 4.6°
  14:48:33 292.7° 9.3°
  14:49:33 304.2° 15.1°
  14:50:33 323.3° 21.5°
  14:51:33 351.9° 24.9°
  14:52:33 20.5° 21.6°
  14:53:33 39.7° 15.2°
  14:54:33 51.2° 9.4°
  14:55:33 58.4° 4.6°
  14:56:33 63.3° 0.8°

  FITSAT 1 == Nov  10, 2012
  Time Azimuth Elevation
  12:16:33 233.7° 0.7°
  12:17:33 233.2° 5.0°
  12:18:33 232.4° 10.8°
  12:19:33 230.7° 19.5°
  12:20:33 226.0° 36.0°
  12:21:33 190.3° 71.3°
  12:22:33 73.9° 49.0°
  12:23:33 64.8° 25.5°
  12:24:33 62.3° 14.3°
  12:25:33 61.2° 7.6°
  12:26:33 60.6° 2.8°

  13:53:33 272.2° 1.2°
  13:54:33 276.7° 5.4°
  13:55:33 283.5° 10.5°
  13:56:33 294.9° 17.2°
  13:57:33 315.5° 25.2°
  13:58:33 348.7° 29.2°
  13:59:33 20.3° 24.0°
  14:00:33 39.1° 16.1°
  14:01:33 49.5° 9.7°
  14:02:33 55.9° 4.8°
  14:03:33 60.1° 0.8°

  FITSAT 1 == Nov  11, 2012
  Time Azimuth Elevation
  11:24:33 218.0° 4.0°
  11:25:33 214.1° 9.1°
  11:26:33 207.4° 16.3°
  11:27:33 193.2° 27.2°
  11:28:33 158.1° 40.2°
  11:29:33 107.9° 35.9°
  11:30:33 83.3° 22.6°
  11:31:33 73.0° 13.4°
  11:32:33 67.8° 7.2°
  11:33:33 64.7° 2.6°

  13:00:33 262.4° 2.1°
  13:01:33 266.1° 6.6°
  13:02:33 272.0° 12.5°
  13:03:33 282.8° 21.0°
  13:04:33 306.2° 32.6°
  13:05:33 350.6° 37.5°
  13:06:33 26.3° 27.3°
  13:07:33 42.6° 17.0°
  13:08:33 50.7° 9.9°
  13:09:33 55.5° 4.7°
  13:10:33 58.7° 0.6°

  14:37:33 290.6° 1.2°
  14:38:33 296.0° 5.1°
  14:39:33 304.0° 9.8°
  14:40:33 316.6° 15.4°
  14:41:33 337.0° 21.0°
  14:42:33 4.9° 23.0°
  14:43:33 30.9° 19.3°
  14:44:33 48.3° 13.4°
  14:45:33 59.0° 8.1°
  14:46:33 66.0° 3.7°

----- Original Message ----- From: tanaka@fit.ac.jp Subject: [amsat-bb] 5.8GHz transmission from NIWAKA

...

Dear Ham Friends,

We will start the experiments of 5.8GHz transmission of your place. Please advice the best time for your place and also let me know your latitude and longitude. Details are: http://www.fit.ac.jp/~tanaka/fitsat.shtml 73 Takushi JA6AVG

Mike Seguin N1JEZ

7:16 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Hi Takushi,

I loaded the latest keps today and the pass times are confirmed. Looking forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode, so I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on 10 Nov, I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite large on both days (~ 125 kHz). I use the original NOVA program on my laptop in the field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...

Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

tanaka＠fit.ac.jp

10 Nov 10 Nov

12:15 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...

Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...

forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

...

I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...

I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...

both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...

field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Mike Seguin N1JEZ

6:18 a.m.

New subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the horizon in about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...

Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...
both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Mike Seguin N1JEZ

8:03 a.m.

New subject: [amsat-bb] NIWAKA detected in VT on 5.84 GHz!

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to try and keep up. I'll edit the I&Q RF file and post it so folks can play it back for themselves.

Two quick screen shots. In the first shot, you can see the signal on the left side Doppler shifting down. In the second shot, a close up of one data burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

The 5.84 GHz transmitter seemed to come on very close to the set time. First detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...

Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the horizon in about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...
both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Mark L. Hammond

8:18 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Congrats, Mike! That's a nice result.

Do you have details of your downconverter/receive/antenna system posted online?

73,

Mark N8MH

At 08:03 AM 11/10/2012 -0500, Mike Seguin N1JEZ wrote:

...

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to try and keep up. I'll edit the I&Q RF file and post it so folks can play it back for themselves.

Two quick screen shots. In the first shot, you can see the signal on the left side Doppler shifting down. In the second shot, a close up of one data burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

The 5.84 GHz transmitter seemed to come on very close to the set time. First detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...
Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the horizon in about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...
both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Mike Seguin N1JEZ

8:46 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Hi Mark,

Very simple system. I was not trying to capture the pictures, but merely detect the signal. So I used my terrestrial 5.760 DEMI transverter. Measured it on the bench at 5.84 GHz, it was down about 15 dB from 5.76 G.... The transverter uses a 144 MHz IF, so simply used my Funcube set to 224 MHz.

The dish is 2' with a Directive Systems 5.76 G feed horizontally polarized. I calibrated Azimuth using Sun Alignment yesterday and left the tripod set up over night. The little green object on top is a digital inclinometer. Netbook is running HDSDR for the FunCube.

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/Dish setup.jpg

Real crude, but worked. I'd like to dig up a 5.84 G preamp.....

Mike

----- Original Message ----- From: "Mark L. Hammond" marklhammond@gmail.com Subject: Re: [amsat-bb] NIWAKA detected in VT on 5.84 GHz!

...

Congrats, Mike! That's a nice result.

Do you have details of your downconverter/receive/antenna system posted online?

73,

Mark N8MH

At 08:03 AM 11/10/2012 -0500, Mike Seguin N1JEZ wrote:

...
Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to try and keep up. I'll edit the I&Q RF file and post it so folks can play it back for themselves.

Two quick screen shots. In the first shot, you can see the signal on the left side Doppler shifting down. In the second shot, a close up of one data burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

The 5.84 GHz transmitter seemed to come on very close to the set time. First detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

jmfranke

8:24 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Awesome feat!

John WA4WDL

-------------------------------------------------- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Sent: Saturday, November 10, 2012 8:03 AM To: tanaka@fit.ac.jp Cc: amsat-bb@amsat.org; fitsat1@hotmail.co.jp Subject: [amsat-bb] NIWAKA detected in VT on 5.84 GHz!

...

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to try and keep up. I'll edit the I&Q RF file and post it so folks can play it back for themselves.

Two quick screen shots. In the first shot, you can see the signal on the left side Doppler shifting down. In the second shot, a close up of one data burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

The 5.84 GHz transmitter seemed to come on very close to the set time. First detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...
Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the horizon in about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...
both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

tanaka＠fit.ac.jp

8:55 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Hi Mike, Congratulation! We are happy! -- Takushi, JA6AVG

----- Original Message -----

...

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to

try and

...

keep up. I'll edit the I&Q RF file and post it so folks can play it

back for

...

themselves.

Two quick screen shots. In the first shot, you can see the signal on

the

...

left side Doppler shifting down. In the second shot, a close up of one

data

...

burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

...

The 5.84 GHz transmitter seemed to come on very close to the set time.

First

...

detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...
Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the

horizon in

...

...
about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF

mode,

...

...
...
so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal

...

...
...
10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much

wider

...

...
...
...
bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be

quite

...

...
...
large on

...
both days (~ 125 kHz). I use the original NOVA program on my

laptop in

...

...
...
the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your

suggestions.

...

...
...
...
...
We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the

author.

...

...
Not an AMSAT-NA member? Join now to support the amateur satellite

program!

...

...
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Mike Seguin N1JEZ

9:24 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Here are two I&Q RF wave files that can be played back in programs like HDSDR. They are the full 96 kHz bandwidth.

The first file is about 18 MB and is the first detection of NIWAKA.

The second file is 3 MB and shows the Doppler near the end of the 2 minute window. The 5.84 GHz signal Doppler shifted ~ 125 kHz in the 2 minutes I was watching it. I had a tough time keeping up. This was faster than I experienced running 24 GHz on AO-40!

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/first... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/fast_...

Mike

----- Original Message ----- From: tanaka@fit.ac.jp To: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: Re: NIWAKA detected in VT on 5.84 GHz!

...

Hi Mike, Congratulation! We are happy! -- Takushi, JA6AVG

tanaka＠fit.ac.jp

11:52 p.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 11:32:38 on 11th Nov. (UTC)

The delay time is specified with accuracy of 0.1 min (6 sec). We appreciate if you could measure the starting time of 5.8GHz transmission. It will be useful for the following experiments of flashing LEDs. Thank you. 73 de JA6AVG Takushi Tanaka

----- Original Message -----

...

Here are two I&Q RF wave files that can be played back in programs

...

HDSDR. They are the full 96 kHz bandwidth.

The first file is about 18 MB and is the first detection of NIWAKA.

The second file is 3 MB and shows the Doppler near the end of the 2

minute

...

window. The 5.84 GHz signal Doppler shifted ~ 125 kHz in the 2 minutes

I was

...

watching it. I had a tough time keeping up. This was faster than I experienced running 24 GHz on AO-40!

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/first...

...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/fast_...

...

Mike

----- Original Message ----- From: tanaka@fit.ac.jp To: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: Re: NIWAKA detected in VT on 5.84 GHz!

...
Hi Mike, Congratulation! We are happy! -- Takushi, JA6AVG

Mike Seguin N1JEZ

11 Nov 11 Nov

6:19 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Hi Takushi,

All set here. We had a brief rain shower, but everything was covered in plastic, so no problem.

Mike

----- Original Message ----- From: tanaka@fit.ac.jp To: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Cc: amsat-bb@amsat.org; fitsat1@hotmail.co.jp Sent: Saturday, November 10, 2012 11:52 PM Subject: Re: NIWAKA detected in VT on 5.84 GHz!

...

Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 11:32:38 on 11th Nov. (UTC)

The delay time is specified with accuracy of 0.1 min (6 sec). We appreciate if you could measure the starting time of 5.8GHz transmission. It will be useful for the following experiments of flashing LEDs. Thank you. 73 de JA6AVG Takushi Tanaka

----- Original Message -----

...
Here are two I&Q RF wave files that can be played back in programs

like

...
HDSDR. They are the full 96 kHz bandwidth.

The first file is about 18 MB and is the first detection of NIWAKA.

The second file is 3 MB and shows the Doppler near the end of the 2

minute

...
window. The 5.84 GHz signal Doppler shifted ~ 125 kHz in the 2 minutes

I was

...
watching it. I had a tough time keeping up. This was faster than I experienced running 24 GHz on AO-40!

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/first...

...
http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/fast_...

...
Mike

----- Original Message ----- From: tanaka@fit.ac.jp To: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: Re: NIWAKA detected in VT on 5.84 GHz!

...
Hi Mike, Congratulation! We are happy! -- Takushi, JA6AVG

Mike Seguin N1JEZ

7:58 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Hi Takushi,

Some success this morning..... I received only 2 data bursts. It started to rain and I had to cover equipment.

I did receive the first data burst at 11:32:37.5 so your timing is very good! I synchronized the clock on my computer with NTP about 1/2 hour before the pass started.

I will post an image and I&Q file later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp ubject: Re: NIWAKA detected in VT on 5.84 GHz!

...

Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 11:32:38 on 11th Nov. (UTC)

The delay time is specified with accuracy of 0.1 min (6 sec). We appreciate if you could measure the starting time of 5.8GHz transmission. It will be useful for the following experiments of flashing LEDs. Thank you. 73 de JA6AVG Takushi Tanaka

tanaka＠fit.ac.jp

9:22 a.m.

New subject: [amsat-bb] Re: NIWAKA detected in VT on 5.84 GHz!

Dear Mike,

We are happy to hear the timing. We often fail to receive the signal because of weather. 73 Takushi JA6AVG

----- Original Message -----

...

Hi Takushi,

Some success this morning..... I received only 2 data bursts. It

started to

...

rain and I had to cover equipment.

I did receive the first data burst at 11:32:37.5 so your timing is

very

...

good! I synchronized the clock on my computer with NTP about 1/2 hour

before

...

the pass started.

I will post an image and I&Q file later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp ubject: Re: NIWAKA detected in VT on 5.84 GHz!

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 11:32:38 on 11th Nov. (UTC)

The delay time is specified with accuracy of 0.1 min (6 sec). We appreciate if you could measure the starting time of 5.8GHz transmission. It will be useful for the following experiments of flashing LEDs. Thank you. 73 de JA6AVG Takushi Tanaka

Kevin Deane

10 Nov 10 Nov

4:49 p.m.

New subject: [amsat-bb] FITSAT-1

When is the LED MORSE supposed to happen?

Kevin KF7MYK

...

From: n1jez@burlingtontelecom.net To: tanaka@fit.ac.jp Date: Sat, 10 Nov 2012 08:03:55 -0500 CC: amsat-bb@amsat.org; fitsat1@hotmail.co.jp Subject: [amsat-bb] NIWAKA detected in VT on 5.84 GHz!

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that I expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to try and keep up. I'll edit the I&Q RF file and post it so folks can play it back for themselves.

Two quick screen shots. In the first shot, you can see the signal on the left side Doppler shifting down. In the second shot, a close up of one data burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK... http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

The 5.84 GHz transmitter seemed to come on very close to the set time. First detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...
Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the horizon in about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF mode,

so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the signal on

10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much wider bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have an unobstructed view to the satellite. I see the Doppler will be quite

large on

...
both days (~ 125 kHz). I use the original NOVA program on my laptop in

the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your suggestions. We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

tanaka＠fit.ac.jp

12 Nov 12 Nov

5:03 a.m.

New subject: [amsat-bb] Re: FITSAT-1

Dear Kevin,

We plan to flash the LEDs on Christmas Eve. So we will start testing around the end of this month.

73 de JA6AVG Takushi Tanaka

----- Original Message -----

...

When is the LED MORSE supposed to happen?

Kevin KF7MYK

...
From: n1jez@burlingtontelecom.net To: tanaka@fit.ac.jp Date: Sat, 10 Nov 2012 08:03:55 -0500 CC: amsat-bb@amsat.org; fitsat1@hotmail.co.jp Subject: [amsat-bb] NIWAKA detected in VT on 5.84 GHz!

Hi Takushi,

Success! I was able to detect NIWAKA. It was lower in frequency that

...

...
expected, but with the Funcube, easy to spot.

The Doppler was huge! and I was moving the dish almost continuous to

try and

...

...
keep up. I'll edit the I&Q RF file and post it so folks can play it

back for

...

...
themselves.

Two quick screen shots. In the first shot, you can see the signal on

the

...

...
left side Doppler shifting down. In the second shot, a close up of

one data

...

...
burst with Doppler - about 3 secs or so...

http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

...

...
http://users.burlingtontelecom.net/~n1jez@burlingtontelecom.net/images/NIWAK...

...

...
The 5.84 GHz transmitter seemed to come on very close to the set

time. First

...

...
detection at 12:24:21 UTC.

More later.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: "Mike Seguin N1JEZ" n1jez@burlingtontelecom.net Subject: [amsat-bb] Re: 5.8GHz transmission from NIWAKA

...
Hi Takushi,

Excellent! I'm set and waiting for NIWAKA to come up over the

horizon in

...

...
...
about an hour.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We have set the delay command successfully. NIWAKA will send the 5.84GHz at 12:24:30 on 10th Nov. (UTC) There may be +,-,30 sec error. Please watch! Thank you.

Best 73 de Takushi, JA6AVG

----- Original Message -----

...
Hi Takushi,

I loaded the latest keps today and the pass times are confirmed.

Looking

...
forward to hearing NIWAKA!

I will be recording the pass using a FunCube Dongle in I & Q RF

mode,

...

...
...
...
so

...
I'll have ~ 80 kHz of bandwidth. If I'm able to detect the

signal on

...

...
...
...
10 Nov,

...
I can try an RTL SDR receiver on 11 Nov that can receive a much

wider

...

...
...
...
...
bandwidth. I use HDSDR with both SDR receivers.

I will be setting up portable in a nearby parking lot so I have

...

...
...
...
...
unobstructed view to the satellite. I see the Doppler will be

quite

...

...
...
...
large on

...
both days (~ 125 kHz). I use the original NOVA program on my

laptop in

...

...
...
...
the

...
field which calculates Doppler for me.

Let's hope for success and thanks for coordinating this test.

73, Mike, N1JEZ AMSAT 29649 "A closed mouth gathers no feet"

----- Original Message ----- From: tanaka@fit.ac.jp Subject: Re: [amsat-bb] 5.8GHz transmission from NIWAKA

...
Dear Mike,

We found the south paths with enough elevation in your

suggestions.

...

...
...
...
...
...
We plan the following times which start 5.8GHz transmission. The signal continues around 2 min. (1) at 12:24:30 on 10th Nov. (UTC) (2) at 11:32:30 on 11th Nov. (UTC) According to our calculating orbit software, the time is little bit delayed. Please confirm with the latest TLE. Thank you.

73 Takushi, JA6AVG

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the

author.

...