NanoVNA for 2m/70cm 3dB Antenna Coupler

Introduction Recently I have been working with receiving various weather and cube satellites. I decided it would be worthwhile to improve reception from my home location by combining various different types of antennas. To this end I purchased an RF combiner/splitter which I will test with the NanoVNA. Measurement Setup Figure 1 shows the test… Continue reading NanoVNA for 2m/70cm 3dB Antenna Coupler

CubeSat ENSO on GNURadio

Introduction This past summer I was able to successfully receive Cubesats EIRSAT-1 and Veronika (Ref.1/6). Both Cubesats have since decayed from orbit according to the SatNOGS database. Looking through the gr_satellites supported Cubesats, I noticed that ENSO was operational having been launched recently in 2023. ENSO or ROBUSTA-1E is a 1U Cubesat developed by the… Continue reading CubeSat ENSO on GNURadio

RTL-SDR for Satellite Weather – GOES EAST

Introduction Last week I revisited receiving GOES16 which I had initially done several years ago (Ref.1/7). GOES16 has now been replaced by GOES19 and is also called GOES EAST (Ref.8). I saved the received signal as a baseband IQ file and later decoded with SatDump. In this video I will synchronously receive/decode the signal with… Continue reading RTL-SDR for Satellite Weather – GOES EAST

RTL-SDR for VHF Air Band AM Receiver on GNU Radio

Introduction In a previous post I looked at a simple receiver for VHF Air Band AM (Ref.1). In this post I add several new features in order to select from a stored set of local frequencies and a choice between source blocks. GNU Radio Schematic VHF Air Band AM Receiver Figure 1 shows the GNURC… Continue reading RTL-SDR for VHF Air Band AM Receiver on GNU Radio