>At least we know now that the amps are the same but it >does still seem to me >that the 1792 with it's amp bypassed is not as sensitive >as the 6790/GM. I had Gary add the preamp to a 6790/GM he built for me a year or two ago and he reported it added 8 to 10 dB of gain... Mike -- Michael Melland, W9WIS Winneconne, WI USA