[Milsurplus] adding LSB to PRC 74A?

[Byron Tatum]

Hello-
   The F500-Z4 is the correct filter to place the PRC-47 on LSB. Yes, the 
PRC-47 inverts the sideband, a 500 KC filter marked "LSB" will produce an 
USB signal from the set.
    I once used tiny crystal can relays and mounted the filter pair (F500-Z4 
/ F500-Z5) under the chassis, under the IF module. Installed a small switch 
on front panel. It worked well.
                                            Thanks, Byron WA5THJ