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- Still short of a few parts to complete my new #QO100 downconverter. Couple of very minor undocumented features 🙂 bu… twitter.com/i/web/status/1… 1 day ago
- The boards finally arrived and all is good. They fit, and the first one has been assembled and is working! 🙂 https://t.co/jSe0bM5I9u 1 week ago
- Being a novice at using KiCAD, I'm keen to see how my ADF4351 synth controller board will fit and work. 🙂 It should… twitter.com/i/web/status/1… 2 weeks ago
- Good decodes today from Andy, @andy_g4jnt. Running some JT9F tests (6 second burst every 30 seconds) on #QO100 https://t.co/Hyeil3WmhI 2 weeks ago
- Five minutes into the ARI EME contest last month and my G-5500 EL rotator failed! Yesterday I replaced it with a he… twitter.com/i/web/status/1… 3 months ago
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Category Archives: Satellites
QO-100 Experiments – LNB Modifications
I have been using a Goobay 67269 LNB with a small Horn antenna on 10368MHz for a while to monitor beacons via rain-scatter. This was a fairly basic setup, the Chaparral horn had been cut-off and the LNB mated to … Continue reading
Posted in 3cms, Blog, GHz_Bands, QO-100, Satellites, SDR
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Enhanced USB-to-Serial PTT Interface
Many of the modern transceivers today support direct USB connectivity to your shack PC. This USB connection typically enables 2-way audio and CAT control allowing more or less full control of the transceiver, including PTT keying. Where CAT control for … Continue reading
Posted in 23cms, 3cms, 70cms, Anglian TVTR, Blog, EME, GHz_Bands, QO-100, Satellites
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QO-100 Experiments – 2400MHz Pipe-Cap Filter
Over the years I’d seen a number of projects that were using one or more pipe-cap filters. They looked as if they should be fairly simple to make so I thought I should try one to help reduce the unwanted … Continue reading
Posted in Blog, GHz_Bands, QO-100, Satellites
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QO-100 Experiments – 2256MHz Local Oscillator
I chose to use an ADF4351 based synthesizer module to generate the 2256MHz local oscillator (LO) needed for my QO-100 QRP transmit converter. This is controlled by an Arduino Nano. Having already used one of these modules for the 54 … Continue reading
Posted in Blog, GHz_Bands, QO-100, Satellites
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QO-100 Experiments – QRP Transmit Converter
Having spent some time listening to the QO-100 satellite using the Goonhilly WebSDR facility and my own temporary receive solutions, I decided it was time to try generating some RF and get a signal up to the satellite. I was … Continue reading
Posted in Blog, GHz_Bands, QO-100, Satellites
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Yaesu G-5500 Fault
About two weeks ago my Yaesu G-5500 rotator controller developed a strange fault. The Azimuth (AZ) meter would not display correctly, the Elevation (EL) meter was working fine. The AZ meter showed only ~20 degrees but the EME antennas … Continue reading
Posted in Blog, EME, Satellites
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Homemade Satellite Antenna
I was at one time quite active on the early OSCAR satellites. In those days (I’m going back over 35+ years) it was 2m to 10m linear transponder(s). Having not done anything with satellite communications for such a long time … Continue reading
Posted in 70cms, Blog, Satellites
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