Category: Navigation

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 Receiving Satellite Weather signals at 136/138MHz has been very exciting over the past several years. NOAA15/18/19 are now deactivated, but Meteor M2-3 & M2-4 are still available. I was able to receive these signals at Toronto Harbourfront with an open sky view (Ref.1). However, at my home QTH, this proved to be difficult with… Continue reading Yagi Antenna for 138MHz Satellite Weather

Introduction Many satellite systems such as Meteor & Inmarsat use QPSK Quadrature Phase Shift Keying type modulation. There are various types of QPSK that enhance certain properties such as OQPSK Offset QPSK. We can simulate these signals in Scicos to study their differences (Ref.1). QPSK Scicos Simulation Figure 1 shows a Scicos schematic used to… Continue reading Satellite QPSK/OQPSK Simulation

Introduction When working with SDR# on Windows, I can save reception data using either the ‘Baseband: Simple Recorder’ or ‘Audio: Simple Recorder’. In either case the files can be opened and manipulated in Audacity because they have a .wav file extension. The Baseband files have a sample rate equal to the Rx samp_rate and the… Continue reading Trimming SDR IQ Raw Data