A great suggestion from Ed KL7UW

The solution is to use a SDR on the IF of your current radio. Then software can provide DSP, filtering, spectral and waterfall displays, decoding...etc. I am testing the SDR-IQ using the 28-30 MHz output of the DEMI 144/28 converter. 144-MHz is very commonly used IF for microwave converters.

Does anyon know of a good 70cms to 10m downconverter?

73 John G7HIA