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Ham Radio CD-ROM (Emerald Software) (1995).ISO
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tm431a
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Internet Message Format
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1990-08-30
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612b
Date: 29 August 1990
To: Radio Mod Server @ KJ6FY
From: WA6YYM @ K3MC
Subj: TM-431A Wide Band Transmit Modification
This modification allows the TM-431A transceiver to transmit and
receive from 420.000 MHz through 444.975 MHz with essentially full
power throughout the band.
1. Disconnect power
2. Remove top cover
3. Locate a green jumper wire sticking out of the front panel
assembly (behind VFO switch)
4. Cut the jumper in half and insulate the ends
5. Assemble radio
6. This will reset the microprocessor and you will have to
reprogram all channels