
7K
•
Appendix C
C-16
Audio Level Potentiometers
The 7K Main Board contains 12 potentiometers. The pots are used to adjust
audio levels only. Signalling tones are digitally generated and do not require
frequency adjustment.
Audio Level Potentiometers
Controller Main Board
Pot
Location
Function
RX1
R97
adjusts audio level from receiver #1
RX2
R98
adjusts audio level from receiver #2
RX3
R99
adjusts audio level from receiver #3
TX1
R104
adjusts audio level to transmitter #1
TX2
R105
adjusts audio level to transmitter #2
CW-TX
R102
adjusts level of CW feeding the transmitters
CW-PL
R101
adjusts level of CW feeding the phone line
tone page
R103
adjusts level of paging tones feeding the transmitters (1-tone, 2-
tone, 5/ 6-tone)
DTMF page
R100
adjusts level of DTMF paging tones feeding the transmitters
AGCPL
R107
adjusts audio level of phone line feeding the transmitters
(AGC’d)
PL
R106
adjusts audio level of phone line feeding the DTMF decoder
(non- AGC’d)
speech
R108
adjusts the level of the speech synthesizer
Note:
There is also a pot on the Speech Synthesis Module, R3, which is used
to adjust the pitch of the synthesizer. This pot may be adjusted to suit your
taste.
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