I'm presently setting up 4 Delta SX UHF Transceivers as Tx'ters for a
repeater system. I have completed the mod and am presently trying to
tune radios. The problem I'm having is that my dev is up to about 9.8
kHz. My service manual says to adjust R237 (Dev Adj). The
radio that I
am working on does not have R237.
There are several revisions to the Delta-S and Delta-SX TRS boards; the
component labels and locations may be different than shown in your manual.
The voice deviation pot should be hidden under the shield covering up the
synthesizer/TRS area of the board (the rear compartment as viewed with front
of the radio toward you). The pot is accessible through a hole in the
shield. It's along the edge of the compartment closest to the front of the
radio, a little right of center. The pot is adjusted with a hex diddle
stick. Usually these pots have either a white or red plastic cap on them
(similiar to the pots used for setting the level of volume-squelch high, and
for setting power output in the PA); you should be able to see it through
the shield cover if you look with a flashlight.
There is also a pot for modulating the VCO (for low frequencies/DPL), which
is in the upper-right, but shouldn't normally need to be adjusted unless
you're using DPL, in which case, follow the procedure in the manual.
--- Jeff
