Hi, Josh,
I am not an RF expert, so take ANYTHING I say with a large grain of salt.
I was waiting for the real experts to chime in, but haven't seen any
answers from them, so here goes ;)
The site you found and listed in your email looks good. Thanks!
If you have a preamp for the band
The Softrock 7 should be considered strictly a mixer and coupled with
the software, an IF receiver.
The SR7 has an MDS of -109 dBm (typical, I measured one at -107 dBm and
another at -110 dBm). So the system NF will be high without gain in
front of it. The VHF preamp in your system should