Radio Shack 21-1620 Owner's Manual page 27

21-1620.fm Page 27 Thursday, August 5, 1999 11:16 AM
6. Insert a new matched pair of crystals
(send and receive) into the sockets
for Channel B or C.
The sockets for the crystals are
marked next to Channel A on the cir-
cuit board with X1 (receive) and X2
(transmit). The channel's letter (A, B,
or C) is marked on the circuit board
and on the diagram below.
Important: Be sure you install the
receive (R) and transmit (T) crystals
in their correct sockets. Do not
reverse the transmit and receive
crystals. If you do, the TRC-235 will
transmit and receive on frequencies
outside the citizen's band, resulting
in illegal operation.
Channel C Channel B Channel A
7. When you have finished installing
new crystals, carefully fit the TRC-
235's front cover to the back cover
and gently squeeze them together.
Make sure the BATT TEST indicator
shows through the front of the TRC-
235 when you reassemble it.
8. Replace
CHANNEL
TRC-235, the back cover's three
screws, the batteries (if installed)
and the battery compartment cover,
then replace the strap.
(some circuitry
details left out
for clarity)
on the front of the
27