Telecommunications, Navigation & Electronics

Introduction I first learned of Meteor Scatter communications during the late 1980s in connection with sending meteorological data from remote locations. The principle made a lot of sense, using natural occurring phenomena to aid in transmission of signals with simple and minimum equipment. Weather sensor data could be collected and sent back using a solar… Continue reading RTL-SDR for Meteor Scatter

Introduction Last Saturday I was able to receive Meteor M2-3 down at Toronto Harbourfront (Ref.1). So I thought it would be interesting to try and receive it from my home location. At Harbourfront, there was some signal loss due to QRM. At my home QTH there was no QRM, but some multipath and obstruction. A… Continue reading RTL-SDR for Satellite Weather – Meteor M2-3+

Introduction Last October 2025 I was able to Receive Satellite Weather from Meteor M2-3 down at Toronto Harbourfront using a Vee dipole. This spring I thought I would try the same thing but using a 2m/70cm Yagi antenna instead (Ref.1). Equipment Setup Figure 1 shows the equipment setup. I initially tested the Yagi earlier this… Continue reading RTL-SDR for Satellite Weather – Meteor M2-3

Introduction Last year I was successfully able to receive cubesats EIRSAT-1, Veronika and ENSO. A key element in their reception was a 433MHz BPF+LNA (Ref.1). Recently new cubesats have been launched, but working at a frequency closer to 400MHz. My existing LNA is broadband but the BPF cuts off above 400MHz so it can’t be… Continue reading NanoVNA for 400MHz/70cm BPF+LNA Testing

Introduction In previous posts, I looked at WSPR & FT8 as part of the WSJT-X protocol suite (Ref.1/6). In Ref.1, I reviewed the WSPR protocol and simulated it in Scicos. I received the signal using the RTL-SDR with HamItUp converter on 30m at 10.1387MHz. In Ref.3 I tested the PlutoSDR for possible application as a… Continue reading PlutoSDR for WSPR on 2m & 6m_a