Kenwood TH-F6A Service Manual page 8

Kenwood TH-F6A/TH-F7E Protocol Specification
This document describes the serial commands used to program and control the Kenwood TH-F6A/TH-
F7E handheld transceiver via its serial port.
Introduction:
The Kenwood TH-F6A/TH-F7E transceiver can be programmed through the serial port using a suitable
interface optional PC interface cable (PG-4P). This allows memory management (as used by the
Kenwood MCP software) as well as software control of the radio.
The information obtained for this document was gathered using the following equipment and software:
Apple Macintosh 17" PowerBook 1Ghz G4 Computer.
ZTERM V 1.1Beta 7 Terminal Software.
BBEdit Version 7.02 Test Editing Software.
Microsoft Word X for Macintosh – Service Release 1.
KeySpan USA-19QW USB to Serial Port Adaptor.
Kenwood TH-F6 FM Transceiver.
Kenwood PG-4P Programming Interface.
HP 18180A RS-232C/V.24/RS-449 Serial Port Interface.
HP 4952A Protocol Analyzer.
Here's how I did it. I wrote files that contained all possible one, two, three, and four letter commands
using BBEdit. These files also had each command alone or with a "0" following each command. I sent
these files to the TH-F6 using the "Send Text..." menu command in the ZTERM terminal program.
Monitored and recorded the communications using the HP 4952A Protocol Analyzer. Edited the
recorded responses from the TH-F6 using BBEdit. In BBEdit, I setup a regular expression that searched
for a response from the TH-F6 that was not a "?". Recorded the commands that had a valid response.
Then I went back, with much patience, and "played" with each valid command until I determined its
function and syntax. The results of my research were recorded in Microsoft Word.
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