Heard VU2TUM on RS-44 CW using RTL-SDR for the first time!

Johnson Francis | July 2, 2025 | Amateur Radio (Ham Radio) | No Comments

Heard VU2TUM on RS-44 CW using RTL-SDR for the first time, with just a CP22E VHF antenna, working on UHF as third harmonic resonance! Learned that one has to disable Gpredict tracking to hear the signal! Then click on waterfall to tune. Otherwise, Gpredict will shift back to the set frequency +/- Doppler soon after your click on the waterfall signal!