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GW8RDI / uSDXOpen

Open firmware for all versions of the uSDX transceiver
GNU General Public License v3.0
61 stars 17 forks source link

LSB and USB cannot be distinguished #13

Open sd8655131 opened 4 months ago

sd8655131 commented 4 months ago

Hello, I have both trusdx and a China replica of usdx WHITEBUTTONS. Trusdx works perfectly, but when I control WHITEBUTTONS to switch between LSB and USB, there is no obvious change. I can even clearly receive FT8 in LSB mode. I've tried everything and can't solve this problem. Have you encountered this situation?

sajjsamm commented 3 months ago

I encountered this problem several times. The solution is to replace the frontend passive components with low-tolerance and high-quality components. Replace all resistors with 1% type and all capacitors with at least 5% tolerance type with good quality like tantalum or film or polystyrene and avoid ceramic X5R or X7R or... at all cost.