Is the uplink on 28.120 + audio or does the psk31 signal need to be at 28.120 i.e. 28.119 USB with 1000 Hz psk31?
I copied some beacons but didn't see anything from my attempt to uplink.
73 Mike kc9doa
On 27 May 2015 at 10:41, Robert Bruninga wrote:
PSAT PSK31 is always in AUTO mode. It will come up whenever it hears PSK31 on the 28.120 uplink.
Bob, WB4APR
On Wed, May 27, 2015 at 9:54 AM, David G0MRF g0mrf@aol.com wrote:
Congratulations Bob and USNA on another successful
spacecraft.
I listened for the first time this morning and could hear the
beacon and
transponded PSK31 without any trouble.
But I was not expecting the 435.350 carrier to stop every now
and again.
What determines if the carrier is on or off. - Beacon
timing.- OK, but is
the transmitter also PSK activated in someway? Or is it a
timer.
Very nice for saving power.
Thanks
David G0MRF
-----Original Message----- From: Robert Bruninga bruninga@usna.edu To: AMSAT BB amsat-bb@amsat.org Sent: Sun, 24 May 2015 17:58 Subject: [amsat-bb] PSAT Status (day 4)
PSAT PSK31 435.350 MHz FM downlink is full quieting with 6
bars using a
decent UHF Yagi.
But we have not seen any users other than those using the
28.120
PSK channel on HF normally. We welcome people to experiment with
it.
Everyone within the 28.120 to 28.123 MHz ten meter passband will be uplinked and heard on the 435.350 MHz downlink.
The Naval Academy's PSAT seems healthy with plenty of power (we are keeping the APRS digipeater off to allow max power for PSK31).
PSAT 's radio and packet system are a simple $250 APRS trackerhttp://www.byonics.com/mtt4b sent to space. The PSK31
transponder is
a single 3.4" square circuit board made by Brno Universtiy in
the
Czech Republic. The CPU for controlling bulletins and timing is
a
simple Parallax Basic Stamp.
PSAT is actually only about a 1U cubesat but in a 1.5U package since the flight was available and it gave us more power for our NON-SPACE solar cells. We are using standard silicon that are only half as efficient as multi-junction cells, but only cost 1% as much.
Sent via AMSAT-BB@amsat.org. 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