This seems to be beloved subject of MW DX community!
W8JI claims:
>I have an R4C modified with balanced mixers and solid-state IF
>amplifiers that overloads at 23 dBm (2-1/4 volts) input, yet has -145
>dBm noise floor (12.6 nanovolts). It's still triple conversion. The
>design was just converted using modern mixer and amplifier
>technology.
I wonder why one needs 12,6 nV sensitivity up to 50 MHz? Using wrong
oversensitive semiconductors for GHz range?
G3RPB explained the relation between IMD and phase noise in QEX letter.
FT-1000MP satisfies these criteria at +30dBm IMD with all the gadgets added.
Just playing with an Atlas-350XL getting used to annoying gear backlash on RTTY.
There is a very good 8 poles 5,6 MHz 500 Hz CW filter and a clean single
conversion.
73 de Mario, S56A, N1YU
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