Hi all,

I just had a nice 60 degree pass over CM98, and using the tracking info from http://amsat.org.ar/pass.htm# I was able to throw my call sign through the satellite, but only once. There is about a half-second delay on the Receive side, but it's not at all a problem.

The success was just a bit after TCA. I did have the 67 hz tone enabled throughout the pass, manual tuning of Tx and Rx, per the info from the website (thanks Pedro!). Very clear audio on the downlink, nice and strong. But I couldn't do it again. Just the one transmit / receive event. No other traffic heard, though there might have been some weak stuff earlier in the pass while I was tuning around.

Next pass is very low to the north west, but may give it a try.

Greg KO6TH

Jari A wrote:

Hi everyone,

I have seen some messages about this satellite, but I havent seen mention of 67Hz subtone.

I had signal at 18:30UTC over russia, as I switch on CTCSS. Unfortunately none was with me on the pass.

But in case I'm not the only one who miss subtone, now its mentioned.

Audio was good, but has delay like Paul, N8HM mention at hes message.

Regards,

:Jari / OH2FQV _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

The PL tone use was per Jari OH2FQV. Interesting that you heard me more than once; I only heard my downlink the one time (announced call, and then grid square after a slight surprise-induced pause).

What are the base (non-doppler adjusted) frequencies?

Greg KO6TH

KO6TZ Bob wrote:

Greg,

I heard you more than once. I didn't think to use a PL tone.

Bob KO6TZ

Hi all,

I just had a nice 60 degree pass over CM98, and using the tracking info from http://amsat.org.ar/pass.htm# I was able to throw my call sign through the satellite, but only once. There is about a half-second delay on the Receive side, but it's not at all a problem.

The success was just a bit after TCA. I did have the 67 hz tone enabled throughout the pass, manual tuning of Tx and Rx, per the info from the website (thanks Pedro!). Very clear audio on the downlink, nice and strong. But I couldn't do it again. Just the one transmit / receive event. No other traffic heard, though there might have been some weak stuff earlier in the pass while I was tuning around.

Next pass is very low to the north west, but may give it a try.

Greg KO6TH

---

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Hi all,

I set Orbitron 145.920 and 436.200. When I had LOS, frequencies were: 145.917 and 436.209. Orbitron show: 145.9169 and 436.2093

Rgds,

:Jari / OH2FQV

On Wed, Dec 28, 2016 at 9:20 PM, Greg D [email protected] wrote:

The PL tone use was per Jari OH2FQV. Interesting that you heard me more than once; I only heard my downlink the one time (announced call, and then grid square after a slight surprise-induced pause).

What are the base (non-doppler adjusted) frequencies?

Greg KO6TH

KO6TZ Bob wrote:

...

Greg,

I heard you more than once. I didn't think to use a PL tone.

Bob KO6TZ

Hi all,

I just had a nice 60 degree pass over CM98, and using the tracking info from http://amsat.org.ar/pass.htm# I was able to throw my call sign through the satellite, but only once. There is about a half-second delay on the Receive side, but it's not at all a problem.

The success was just a bit after TCA. I did have the 67 hz tone enabled throughout the pass, manual tuning of Tx and Rx, per the info from the website (thanks Pedro!). Very clear audio on the downlink, nice and strong. But I couldn't do it again. Just the one transmit / receive event. No other traffic heard, though there might have been some weak stuff earlier in the pass while I was tuning around.

Next pass is very low to the north west, but may give it a try.

Greg KO6TH

---

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---

Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

The 06:34 UTC pass was much better. Heard myself with full quieting through the second half of the pass, down to about 2 degrees. Oddly, not able to get in during the first half... No idea why. Base frequencies used (plus Doppler) and Keps for 2016-083A as picked up from Celestrak this morning.

Didn't hear anybody else.

One other thing I've noticed is a very strong signal that swept upwards through the downlink passband during the pass. Heard it last time too. It didn't seem to have a specific carrier (sounded like a full quieting signal on both SSB and FM mode). Didn't seem digital (no buzzing, not GMSK), but was definitely wide banded. Never heard anything like it before. What else was launched with this bird that might also be using the 2m ham band for a downlink?

Greg KO6TH

Greg D wrote:

Weak pass, as expected. But I did hear myself towards the very end of the pass. Downlink seemed to be about 2 khz low, but hard to know for sure. I tried moving the transmit side a bit, but no real conclusion there on what works best. Maybe a khz or so low there too.

Next pass is late tonight, if I remember.

Greg KO6TH

Greg D wrote:

...

Ok, found the frequencies: 436.200 up, 145.920 down, per Wakita-san's website (http://www.ne.jp/asahi/hamradio/je9pel/by70ca45.htm).

Have Gpredict programmed and ready to go. Will try for a fully-automated pass. Fingers crossed.

Greg KO6TH

Greg D wrote:

...

The PL tone use was per Jari OH2FQV. Interesting that you heard me more than once; I only heard my downlink the one time (announced call, and then grid square after a slight surprise-induced pause).

What are the base (non-doppler adjusted) frequencies?

Greg KO6TH

KO6TZ Bob wrote:

...

Greg,

I heard you more than once. I didn't think to use a PL tone.

Bob KO6TZ

Hi all,

I just had a nice 60 degree pass over CM98, and using the tracking info from http://amsat.org.ar/pass.htm# I was able to throw my call sign through the satellite, but only once. There is about a half-second delay on the Receive side, but it's not at all a problem.

The success was just a bit after TCA. I did have the 67 hz tone enabled throughout the pass, manual tuning of Tx and Rx, per the info from the website (thanks Pedro!). Very clear audio on the downlink, nice and strong. But I couldn't do it again. Just the one transmit / receive event. No other traffic heard, though there might have been some weak stuff earlier in the pass while I was tuning around.

Next pass is very low to the north west, but may give it a try.

Greg KO6TH

---

Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb