At 11/2/2022 09:35 AM, you wrote:
Spec for the MTR2000 VHF is 0.35 uv or -116 dbm at 12db SINAD, so his receiver is pretty close.
1 dB less than that is typically what I get out of a MASTR II or MVP, which has the same spec. However, at least here in SoCal that's pretty much equal to the noise floor on 2 meters. Depending on the site I may or may not try adding a preamp; in most cases no because the actual S/N improvement is insignificant. However at 0.4 uV that's 2 dB worse, which in most cases would clearly be throwing away S/N. So I wouldn't be happy with 0.4 uV either - worth getting that 1 dB or (hopefully) more back.
Bob NO6B
