Kenwood TS-870 Firmware Upgrade Kit with installation instructions delivered to your door
Free shipping applies to customers in the USA and please email for shipping rates elsewhere.
Per the Kenwood service bulletion 10/11/96 the S meter will pin with switching between transmit and receive followed by the receiver muting for a few seconds. The cause is insufficient processing of the AGC circuit. The solution is replacing the three eproms on the TX-RX board with these new ones.
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