Introduction Further to my previous post (Ref.1), I was hoping to receive a DRM transmission on the 31m band at 1900DST/2300UTC. I used the same equipment: SDR-IQ with HF Loop antenna tuned for 9.5MHz. There were several very powerful signals but no DRM. I did receive a strong USB signal on 8764KHz which turned out… Continue reading HF Marine Weather 8764KHz_USB
Category: Telecommunications
Telecommunications: Propagation, HF, VHF, UHF, uWave
HF SDR-IQ on 19m VOACAP Prediction
Introduction It’s been a while since I have monitored the HF bands, so I thought I would do a bit of scanning. In the last several years there has been a tremendous amount of construction near me and the HF noise level has increased quite a bit. I am right next to a power line… Continue reading HF SDR-IQ on 19m VOACAP Prediction
RTL-SDR for NOAA15/18/19 Satellite Weather-Summer 2025
Introduction Several years ago, I looked at receiving NOAA15/18/19 satellite weather using various configurations with a Windows 10 laptop and a Raspberry Pi4B (Ref.1/5). I also simulated the NOAA-APT transmission using Scicos (Ref.6). I thought it would interesting to revisit NOAA and try some different ideas I picked up working with Cubesats. Satellite Tracking Figure… Continue reading RTL-SDR for NOAA15/18/19 Satellite Weather-Summer 2025
CubeSat Veronika on GNURadio
Introduction In the last five posts I have discussed receiving CubeSats under various conditions and locations. Following my successful reception of EIRSAT-1, I wanted to see if my procedure could be used for other University/Educational CubeSats (Ref.1/5). I cross referenced several data bases to make a collection of possible candidates. First, the CubeSat must be… Continue reading CubeSat Veronika on GNURadio
CubeSat 437MHz on GNURadio
Introduction In the last four posts I have discussed receiving CubeSats under various conditions and locations. In Montreal I discovered a perfect receive location with no QRM, but unfortunately the VEE dipole did not have enough gain to get a proper decode. The signal was visible but not decode-able. So my method now is to… Continue reading CubeSat 437MHz on GNURadio