Newcomer here. Sorry if my post is in the wrong subforum.
My setup: Flex1500 (28 MHz) with ext. GPSDO --> 432/28 transverter from transverters-store.com --> SG-Lab 2400/432 transverter with ext.GPSDO --> Patch antenna in 1m dia. TV dish. (RX: 65cm dia. TV dish + modified LNB with ext. GPSDO --> AirSpy SDR with ext. GPSDO --> SDRConsole)
The setup is basically working fine, but my TX frequency drifts several hundred Hz over the course of a QSO. Nothing serious for CW/SSB operation, just a bit annoying, but not the best for digimodes. The culprit seems to be the 432/28 transverter from transverters-store.com . I have contacted Serge UT5JCW and he wrote:
"It is impossible to improve its stability because it is pll synthesizer and it is
built in chip. Nothing could be done with it. "
1. Does anybody have an idea how to improve the frequency stability of this transverter?
2. Does anybody know of a 432/28 MHz transverter that is more stable and doesn't cost a fortune? (I know of DB6NT, Microwave East, Elecraft, MiniKits)
3. Any idea?
73 de Greg DF2IC