Kenwood TK-5210 Modification Information page 13

2.2.2 Configuring and Modifying the
TX-RX PCB
The transceiver emits a Sidetone at fixed level regardless
of the Volume control position when the QE-2 board is
installed. The volume of Sidetone emitted from the board
can be adjusted by modifying the TX-RX PCB (X57-6820-
10) in the transceiver.
Be careful not to damage the seal between the transceiver
and its cover. Damaging the seal may degrade the
waterproof performance of the transceiver.
1. Remove the 4 screws that hold the cover in place.
2. Insert tweezers into the cover screw hole and pull
off the cover.
MOD (K)/Ver. 1.04
2 CONNECTING THIRD PARTY OPTIONAL DEVICES
Sidetone Configured in Conjunction with the
Volume Control
1. Remove the resistor (R552, 10k
PCB (X57-6820-10).
2. Solder a chip resister, R553 (180k
The transceiver whose serial number is
between 607xxxxx and 609xxxxxx:
Solder a chip resister, 180k
R552
The transceiver whose serial number is
701xxxxx and after:
Solder a chip resister, 820k
R552
Confidential
Ω
) from the TX-RX
Ω
Ω
to the location below.
R553 (180kΩ)
Ω
to the location below.
R553 (820kΩ)
Contents
Ω
or 820k ).
9