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RE: SUNSAT in HT APRS mode!



My only complaint is the continuing use of 9600, which is limiting my
ability to utilise the bird.  Most of my gear is portable, so unsuitable for
9600 bps conversion (don't fancy poking around the innards of a compact
radio full of SMD! :) )

Tony Langdon.
Systems Development and Support.
ATC Training Australasia.  Level 2 321 Exhibition St Melbourne  3000.
Phone:  1300 13 1983     WWW:  http://www.atctraining.com.au


> -----Original Message-----
> From: K5OE@aol.com [mailto:K5OE@aol.com]
> Sent: Wednesday, 4 October 2000 22:53
> To: bruninga@nadn.navy.mil
> Cc: amsat-bb@AMSAT.Org
> Subject: Re: [amsat-bb] SUNSAT in HT APRS mode!
> 
> 
> During last night's pass over N.A. (0150 utc), the bird was 
> in mode B with a SUPER signal... AND it sounded like the APRS 
> packet bursts were running concurrently.  Mode B is so much 
> easier to hear than mode J, I sure wish the operators would 
> consider running it in mode B for a while when the parrot 
> demonstration is concluded.  UO-14 last night (0315 utc) had 
> a solid carrier from AOS to LOS, making it very difficult for 
> many ops to even get into the satellite.  Mode B does not 
> appear to have this problem--one more vote in it's favor.  
> 73,
> Jerry, K5OE
> 
> In a message dated Wed, 4 Oct 2000  5:16:11 AM Eastern 
> Daylight Time, Bob Bruninga <bruninga@nadn.navy.mil> writes:
> 
> << Sunsat is in APRS mode on 145.825 and the downlink is 
> bodacious!  It is
> lighting all of the Smeter LCD's on my THD7 with no preamp 1730 EDT.
> 
> It is 9600 baud so it sounds just like a noise burst every 10 seconds.
> The entire pass, I saw no one but me...  You will see SUNSAT 
> ?? for the
> telemetry packets, but once a minute you will capture a brief STATUS
> packet. (and anyone else that digipeats APRS at any time!)
> 
> Next pass is about 7 PM EDT or 6 PM CDT etc...  And then 
> again at about
> 2030.  Starting tomorrow the central USA pass (usually voice) will be
> in PARROT mode.  Transmit and listen on 145.825 voice..  But all other
> passes are APRS!  (It also comes over in the morning between 
> about 5 to 9
> AM your local time too)...
> 
> Uplink is 436.290 +/1 10 KHz doppler.  Use either 9600 baud or 1200
> baud. But downlink is always at 9600 baud.  TUrn on your THD7 
> or D700 on
> 145.825 in 9600 baud and enjoy!  (Only the D7(G) can operate 
> APRS mode at
> 9600).  But either rig with a laptop can work 9600 baud in 
> PACKET Mode.
> 
> This is MODE B which means it is 10 dB stronger than ANY OTHER current
> packet downlink, so you can hear it on a rubber duck.  No 
> excuse not to
> try it...
> 
> for details http://web.usna.navy.mil/~bruninga/astars.html
> 
> de WB4APR, Bob
> 
> SINCE NO TRACKING/TUNING is required on the 2m dowlink, just 
> set your D7
> or D700 up in the car and see what it captures...even if you are not
> avaiable
> 
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> 
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