August 2008 - AMSAT-BB - mailman.amsat.org

Re: WG: COMPASS-1 beacon
by Alan Cresswell 20 Aug '08

20 Aug '08

Hi Mike and Robert, All commands were sent and acknowledged at 2043 UT on the just completed pass. Neither the test beacon nor the normal beacon were heard during the pass. I resent the test beacon command at 2045 which was acknowledged but again no beacon. I sent the heater off command on both the 0945 UT and 1142 UT eclipse passes last night. The command was acknowledged on the 0945 pass but then no further commands were accepted. No response on the 1142 pass. Alan ZL2BX -----Original Message----- From: Robert Smith [mailto:[email protected]] Sent: Wednesday, 20 August 2008 20:55 To: Mike Rupprecht Cc: Alan Cresswell Subject: Re: [amsat-bb] WG: COMPASS-1 beacon Aloha Es tut mir leid Mike (sorry); a nice long pass over Honolulu just now produced no results. I sent tones but received no response. Also the beacon was not heard?? Hopefully, COMPASS will be "well charged" when down N.Z. way and Alan will get a copy! I will stick with it. Next pass is only 1 degree for me but will be much better down south. Respectfully robert NH7WN

1 0

DO-64 beacon - sunlight only?
by Bill Howell 20 Aug '08

20 Aug '08

Is the beacon on full time, or sunlight only? Thanks, Bill Howell N5AB

2 1

AO-7 sked
by w7lrd＠comcast.net 20 Aug '08

20 Aug '08

With AO-7 going over to mode A lately. Do we know what mode it will be in for the later U.S. passes this evening. I am giving a demo and want to look like I know what I'm doing! 73 Bob W7LRD -- "if this were easy, everyone would be doing it"

3 2

Office Closed
by Martha 20 Aug '08

20 Aug '08

The AMSAT office will be closed from Monday, August 25th through Tuesday September 2nd. I am going on vacation!!! -- 73- Martha

1 0

LMR400 or 400UF?
by Michael Tondee 20 Aug '08

20 Aug '08

I need to rework my 70cm antenna system and was thinking about going with LMR 400. I have about a 40 foot run. Is there any real advantage to using the ultra flex for the entire run or can I get by with a short section of the UF between the preamp and antenna to accomodate the rotor turning? How about just using a short section of RG8U there instead of the LMR400UF? I'm trying to do this on a budget. Tnx and 73, Michael, W4HIJ

6 5

Re: COMPASS-1 needs your help
by Stephen Davis 20 Aug '08

20 Aug '08

COMPASS 1 can be found in the following categories: CubeSats NORAD ID: 32787 Int'l Code: 2008-021E Perigee: 621.3 km Apogee: 642.5 km Inclination: 98.0° Period: 97.2 min Launch date: April 28, 2008 Source: Germany (GER) Comments: This is a CubeSat satellite. Compass-One was designed and built by students at Aachen University of Applied Sciences in Germany. The satellite features a Morse code telemetry beacon at 437.275 MHz. Compass-1 will also provide a packet radio data downlink, which will include image data, at 437.405 MHz. ----- Original Message ---- From: Raul Romero CA3SOC <ce3soc(a)gmail.com> To: Alan Cresswell <alancresswell(a)xtra.co.nz> Cc: "Amsat-BB(a)Amsat.Org" <amsat-bb(a)amsat.org> Sent: Tuesday, August 19, 2008 10:22:32 PM Subject: [amsat-bb] Re: COMPASS-1 needs your help 435.250 is beacon ??? 73 Raul CA3SOC --------------------------------------------------------------------- "Are you still wasting your time with spam?... There is a solution!" Protected by GIANT Company's Spam Inspector The most powerful anti-spam software available. http://mail.spaminspector.com ----- Original Message ----- From: "Alan Cresswell" <alancresswell(a)xtra.co.nz> To: <amsat-bb(a)amsat.org> Sent: Tuesday, August 19, 2008 7:33 PM Subject: [amsat-bb] Re: COMPASS-1 needs your help Hi Mike, All commands sent at 2202 UT. All accepted. No immediate response from beacon but beacon came on just before LOS and managed to capture a full frame. Data decoded OK as follows: 19.08.2008 22:18UTC FF140000180100200000900005 --------------------------------------------------- Solar Cell Voltage 5.00 V Solar Panel 6 Cur 125.49 mA Solar Panel 2 Cur 6.27 mA Solar Panel 3 Cur 150.59 mA Solar Panel 4 Cur 0.00 mA Solar Panel 5 Cur 0.00 mA EPS Reset Counter 0 Power Level Critical Battery Capacity Heater Active Battery Heater OFF Power Safe Counter 0 Emergency Mode Counter 0 Battery Voltage 2.82 V Battery Current 0.00 mA Battery Temperature 5 °C Resent the heater off command just before LOS and accepted OK at 22:10:30. Alan ZL2BX _______________________________________________ Sent via AMSAT-BB(a)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(a)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

1 0

Compass success
by Bob DeVarney W1ICW 20 Aug '08

20 Aug '08

I just worked the 16:43 pass ( only 8 degrees elevation ) and was able to successfully upload all four commands twice with confirmation both times. Keep the faith, baby! 73 de Bob W1ICW --

4 6

Rare Grid Voyage (SD, ND, MT)
by Gary "Joe" Mayfield 19 Aug '08

19 Aug '08

I am going on a trip that will pass through some rare grids. It is not a grid expedition and the main purpose is work related travel. The person I am traveling with has agreed to a few "rest stops" for me, my hand-held and arrow antenna. I cannot guarantee exactly when I will be in which grid, but I will leave Watertown, SD Sunday, August 24th around 6:00 AM. My trip will take me through the following grids EN-15, EN-05, DN-95, DN-85, DN-86, DN-76, DN-66, DN-65, DN-55. I will cover the same ground in the other direction August 29 or 30th. Please listen for me on AO-51, SO-50, and AO-27. I don't expect to make every pass, but I hope to get quite a few of them. 73, Joe kk0sd P.S. If you really need EN-15 or EN-05 they are not that far from my home and I would be willing to do a sked.

1 0

helix feed available
by w7lrd＠comcast.net 19 Aug '08

19 Aug '08

I have built a few short 5 1/2 turn helix feeds for 2.4Ghz., for experimental (playing) purposes. I have one that I don't need. It is LHCP, stainless steel reflector & works well on my primestar dish. If interested drop me a note, picture on request. 73 Bob W7LRD -- "if this were easy, everyone would be doing it"

1 0

short helix feed available
by w7lrd＠comcast.net 19 Aug '08

19 Aug '08

I have been building a few 5 1/2 turn helix feeds for off center dishes, for experimental (playing) purposes. I have one that I don't need, it is LHCP stainless steel reflector, and works well on my primestar dish. If interested drop me a note, and I'll send pictures on request. 73 bob W7LRD -- "if this were easy, everyone would be doing it"

1 0