cool book and resource for learning morse code:
http://www.qsl.net/ik0ygj/enu/index.html
Thursday, January 28, 2016
Monday, January 11, 2016
ReArrangements
Took advantage of the warm weekend to get up and rearrange some things.
I took down my my non-functional Ambient WS-2080 weather station and installed an MFJ-1754 onto the same mast. Ran the LMR-240 back to the shack.
Also setup an A99 10 mtr vertical, and re-arranged things in the shack so that I will be better positioned for PSK31 operation, once I figure out a way to tie together everything via software.
For NO-84, the architecture is a 10mtr uplink and a 70cm downlink so I need two antennas,
and two clients, one running a Doppler compensating software package up through the A99,
and the other a regular PSK31 client connected to the 70cm downlink.
Yesterday, I tested the receive portion using SDRplay SDR + HDSDR software, listening in on a decent pass of the ISS. I heard the AX.25 packets fairly clearly and that really was encouraging.
It was the first valid data stream I've seen via HDSDR. I didn't try decoding it, but am confident if AX.25 came through that clearly, I should have no trouble listening for a PSK31 stream, even on the much weaker downlink for a cubesat like NO-84.
I took down my my non-functional Ambient WS-2080 weather station and installed an MFJ-1754 onto the same mast. Ran the LMR-240 back to the shack.
Also setup an A99 10 mtr vertical, and re-arranged things in the shack so that I will be better positioned for PSK31 operation, once I figure out a way to tie together everything via software.
For NO-84, the architecture is a 10mtr uplink and a 70cm downlink so I need two antennas,
and two clients, one running a Doppler compensating software package up through the A99,
and the other a regular PSK31 client connected to the 70cm downlink.
Yesterday, I tested the receive portion using SDRplay SDR + HDSDR software, listening in on a decent pass of the ISS. I heard the AX.25 packets fairly clearly and that really was encouraging.
It was the first valid data stream I've seen via HDSDR. I didn't try decoding it, but am confident if AX.25 came through that clearly, I should have no trouble listening for a PSK31 stream, even on the much weaker downlink for a cubesat like NO-84.
Thursday, January 07, 2016
PSK-31 and HDSDR
My next project in the satellite world will be to attempt working PSK-31 through NO-84 or any other satellite that supports this mode.
First goal is to get my new Software Defined Radio, SDRplay, working using some software.
Check. Can receive.
Second goal is to get this hooked up with a digital mode software, running on my win10 tablet.
Working on this.
....
Final goal will be to get a PSK-31 transmission through a satellite, 10mtr uplink, 70cm downlink.
Stay tuned!
First goal is to get my new Software Defined Radio, SDRplay, working using some software.
Check. Can receive.
Second goal is to get this hooked up with a digital mode software, running on my win10 tablet.
Working on this.
....
Final goal will be to get a PSK-31 transmission through a satellite, 10mtr uplink, 70cm downlink.
Stay tuned!
Monday, January 04, 2016
Progress
Having time that aligns with satellite passes is always a challenge.
Having to work Satellites manually, without aid of rotors, is a bigger challenge.
I was on FO-29 last week and finally found myself on the downlink, by whistling.
However, in the process, I called "CQ Satellite" a few times and stepped on a pileup
created by Yuri UT1FG/MM. Big OOPs.
I worked using my FT-736R on the 2 meter uplink and the FT-817 on the 70cm downlink,
though there was no particular reason, other than the few extra watts the 736 puts out.
Throughout the pass, I manually tracked the sat using my Elk Yagi, mounted on a tripod.
It was clumsy, but it worked.
Now I need to figure out how to hear myself better. Perhaps using CW and making sure via
charts that I am not intentionally stepping on anyone.
Our friend, Doppler, got me this time.
Not again, my friend ! :D
Having to work Satellites manually, without aid of rotors, is a bigger challenge.
I was on FO-29 last week and finally found myself on the downlink, by whistling.
However, in the process, I called "CQ Satellite" a few times and stepped on a pileup
created by Yuri UT1FG/MM. Big OOPs.
I worked using my FT-736R on the 2 meter uplink and the FT-817 on the 70cm downlink,
though there was no particular reason, other than the few extra watts the 736 puts out.
Throughout the pass, I manually tracked the sat using my Elk Yagi, mounted on a tripod.
It was clumsy, but it worked.
Now I need to figure out how to hear myself better. Perhaps using CW and making sure via
charts that I am not intentionally stepping on anyone.
Our friend, Doppler, got me this time.
Not again, my friend ! :D
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