The good news is I found a manual. The bad news is that the following is the entire contents of the file:
Switch Settings
A -- VHF Aircraft band
L -- VHF Low Band
H -- VHF High Band
U -- UHF Band
__________________
73 de W6KRU - Dan
BCD396XT BCD396T PSR-500 FRG-100 PRO-43 PRO-90 PRO-2050 FT-857 FT-90 VX-170 VX-3
RS 20-176 | Maxrad MFB8133 MYA8256 MUF8043 MLB3400
|