Tonight I tested the turnstile antenna and Airspy on the Meteor-M N2 LRPT downlink signal. It was a good, high elevation pass and it looks like the signal is strong enough to decode the transmitted images.
Some time ago I got a 137 MHz turnstile antenna from Jørn OZ6TA. We decided to build an automated NOAA weather satellite image receiver using a modern SDR device. He also had an Airspy he wasn’t using and so it became the SDR radio we were going to use for this.