tr2300-12k5-step-mod

TR-2300 Frequency step change to 12.5kHzThe question of changing the frequency step of the TR2300 to 12.5kHz,isvery frequent in region using 12.5kHz channels steps for repeaters.This modification consists of changing the PLL circuit on the receiver boardand using the "Aux"switch as +12.5kHz function.R9100Kx6】CTT1P0DOI0o)Po PI P2 P3Q19FIN QIN QOUTFs Do LD P7稻L20 ImH8多L2312,8w女RBO 47KTP5R9047KR79.47This modification is not recommended for you if you are not equipped withsmall iron tip and good frequency meter.Provide a MC145106 PLL circuit from Freescale (Motorola),not easy to findor removed it from an old transceiver or CB.1)Modify the Aux switch as it is in released positionWith this modification the AUX function is disabled.One some transceiver.this switch has been modified to get the reverse function on repeater modethis function will be also disabled.The AUX LED will indicate +12.5kHz.Remove and insulate from switch blue wire from LED