I know that some of them, like the HAMITUP, use a socket for the XO, which one could easily replace with a TCXO. Check with the manufacturers about the XO spec they use.
On 2016-03-30 11:43, Daniel Pocock wrote:
On 30/03/16 16:49, address@hidden wrote:
All of them use reasonably good crystals or crystal XOs. Certainly a lot better than the RTLSDRs most of these were intended for. I assume that you're talking about frequency stability, rather than gain stability?
Yes, frequency stability. SSB voice signals in the HF spectrum may be
around 3000 Hz wide
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