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World of Ham Radio 1997
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tm701a_0.doc
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1997-02-01
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TM701A
TM-701A REPEATER CROSS-BAND MODIFICATION (REVISED)
Perform the following modifications to allow the TM-701A to operate in
the repeater cross-band mode.
MODIFICATION:
1. Disconnect the power supply and antenna.
2. Remove the top and bottom covers (12 screws). Disconnect the
speaker wire from the transceiver.
3. Locate the green jumper wire show in figure 1. Using a sharp pair
of wire cutters, cut the jumper in half.(green jumper)
CAUTION: Cutting the green jumper allows the TM-701A to transmit from
142 to 151.995 MHZ. Protect your license by only using
frequencies that you are authorized to transmit on.
4. Solder a jumper wire to the foil side of the TX-RX board as shown
in figure 2.
5. Assemble the transceiver by reversing steps 1 -2.
6. Reset the microprocessor by holding in the MR key as the power is
turned on.
The repeater cross-band operation allows the TM-701a to receive on one
band and re-transmit the signal on the other band. The TM-701a
alternately displays the two bands until a signal is received. The
transceiver will then display the band that is re-transmitting the
signal. The SHIFT function cannot be used during the repeater cross-
band operation. If the TONE or CTCSS function is required, only one ETA
tone can be used for the two bands.
CONTINUED IN FILE TM701A.2