[DogParkList] Random TX without user input

[Larry West]

Rig: Icom IC-718 w/one of those "tune mode" plug adapters from 
Quicksilver radio
USB Interface: MicroHam IC-13 (13-pin connector for Icom 706, 718 & 
others), latest Mac drivers from chip maker
Mac: PowerMac G4 Digital Audio, 1.2 Ghz Sonnet processor, 1.5 GB RAM, 
Mac OS 10.3.6, iMic
MacLoggerProDX: 4.0.1
MultiMode: 5.1.0


I've been running MacLogger Pro DX on my G4 for a couple months now, 
and have had the key and ACC cables disconnected. Yesterday, I added a 
cable to the ACC connector to bring audio into my Mac (via iMic) for 
MultiMode.

The cable I added required that I make connections to the 13-pin plug 
on the McroHam, but after checking & double-checking, there were no 
shorts.

The problem: Now, when tuning across the bands, the 718 will go into 
transmit mode for about half a second at seemingly random intervals. It 
sometimes happens when I stop tuning, other times when I just start. 
Sometimes when I don't have a hand on the radio or keyboard.

It happens going *Both* ways on the tuning dial, at all tuning steps. 
It does **NOT** happen when I use the Griffin PowerMate to tune the 
radio in 1Khz steps.

If I leave the tuning dial set, it normally does not key up, though 
some times it will if I recently tuned using the main dial on the 
radio. Changing bands does not seem to be a problem.

It's not the tune mode device or radio setting, as the key-up is only 
about half a second, and happens with the tune mode device removed.

I don't know if there is any flash memory in the MicroHam IC-13 that 
can be changed, or if there is a setting in MacLoggerPro DX that would 
help.

For the record, the "prefs" in MacLogger Pro for the communication with 
the 718 are:
port: usbserial-FT2XSWCG
Radio: ICOM IC-718
Baud: 9600
SBits: 1
Delay: 13.00 ms.
Icom Addr: 5E h
DTR: **NOT** checked
RTS: **NOT** checked

Larry West