--- Bob Stewart bob@evoria.net wrote:
--- Gary Memory gmemory@tks-net.com wrote:
First, it is difficult (not impossible, just difficult) to obtain a better front end noise figure than what the original receiver manufacturer has created.
Is this for the latest whiz-bang radio, or the ~8db NF FT-726R that I have?
I disagree with this comparison of quality mast-mounted, band specific preamps to built-in wideband transceiver pres. I can't imagine that the DC-daylight preamp in my $1000 transceiver could have been engineered to the same performance specs on 70cm as a $500 70cm specific preamp with helical filters. Not that $$$ spent is all gained in return, but it gives an idea about the potential budget that can be allocated to the various materials used in construction.
I was discouraged by the preamp nay-sayers, but for satellite work, I think understanding what makes a preamp useful is the key to deciding if you want one. In my case, it was well worth it.
Regards,
Scott NW2S