Category Archives: Satellites

QO-100 Experiments – 2400MHz Pipe-Cap Filter

Posted on January 4, 2020 by

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

QO-100 Experiments – 2256MHz Local Oscillator

Posted on January 4, 2020 by

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

QO-100 Experiments – QRP Transmit Converter

Posted on January 3, 2020 by

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

Yaesu G-5500 Fault

Posted on August 4, 2019 by

  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

Homemade Satellite Antenna

Posted on February 5, 2018 by

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