Must have synch detection and selectable sideband. No serious MW
program listening is possible without it - the adjacent channel
shares spectrum with one sideband of the channel you're tuned to.

SSB upper and lower, and enough stability to hold the right
frequency for hours.

DSB reception (3dB better than SSB) with suppressed carrier notch,
to kill off slow carrier beats against multiple stations. The R8B
in SSB mode does this but gets only half the S/N that DSB would give.

(SSB and DSB for when there's more than one carrier present - the
pumping of the net carrier anti-pumps the detected audio, making it
unlistenable. Notching out the carrier(s) and just supplying
an internal stable one solves the pumping problem. The sidebands
do not pump by themselves, just the former reference carrier.)

Serious brick wall passband, to kill off an adjacent channel local
modulating the AGC on you.

Huge dynamic range; MW locals require it if you're going to suppress
them.

Audio notch filters against various hets from computer terminals
that the neighbors have.
--
Ron Hardin


On the internet, nobody knows you're a jerk.