The OMNI V uses three wires for the interface as Carl has properly ndicated.
TD, RD, and signal ground (pin 7 at the OMNI).
Approximately 12 of the 25 pins on the D connector on the V are used for
other functions such as the phase signals for the remote encoder and outputs
for band indication for use with things like the Hercules amplifier.
Experimentaion could be 'eventful' and using a full 25 wire connector will
definitely cause operational problems.
The OMNI D connector is configured as a DTE which means that it transmits
data on pin 2 the same as the PC does. The RD and TD wires therefore need a
'twist' in the cable.
The port for rig control must be configured via the SETUP and Ports menu
Think it was also necessary to assign the radio under the Bands then Set
Frequency Mode menu items.
Save Configuration on the Setup menu is also necessary in order for WL to
remember the items which were just set....otherwise they get lost on
From: George T. Baker <firstname.lastname@example.org>
To: Carl Hyde <email@example.com>
Cc: Ten Tec <firstname.lastname@example.org>; writelog <email@example.com>
Date: October 08, 1999 5:07 AM
Subject: Re: [TenTec] Omni V and Writelog
>Carl, you might want to look into the usage/status of the various serial
>port handshaking (data flow control) lines: DTR, DSR, RTS, CTS, etc. Some
>comm programs assume that these are tied up or to one another, etc. to
>enable data flow. Your TNC may have these control lines properly hooked
>up while your link to the Omni may not. The problem may be with the
>interface - in this case, the Omni - rather than with the program or the
>port itself. That would explain why your port works with your TNC but not
>with the Omni.
>For example, in the Icom CT-17 that I use between Logger and my IC-765,
>Pins 4 and 5 (RTS and CTS) are connected together in the CT-17. Plus, I
>had to tie Pin 20 (DSR) high to get the interface recognized by the
>HyperTerm Windows and other comm programs.
>72/73, George AMA 98452 R/C since 1964
>Amateur Radio W5YR, in the 54th year and it just keeps getting better!
>AutoPOWER Systems, Fairview, TX (30 mi NE Dallas) Collin County
>QRP-L QRP-ARCI FISTS NORCAL ZOMBIE ARS 10-X 33.2 N 96.6 W EM13RE
>Carl Hyde wrote:
>> Ive had WriteLog Version 10 for a few days and have
>> gotten the hang of the software to the point where I
>> wanted to use it to control my Omni V. I made up a
>> serial cable using pins 2, 3, and 7 from the radio to
>> my computer. WriteLog says it will work with just TXD,
>> RXD and signal ground. I know the serial port works
>> because I use the same port for my TNC. I have gone
>> through the settings numerous times and the program
>> still will not interact with the Omni V. Is anyone
>> else using WriteLog with the Omni V that can offer any
>> advice? Send me a phone number where I can converse
>> and I'll spend the coin to call you. Thanks for the
>> Carl S.HYDE
>> Eagles May Soar, But Weasles Never Get Sucked Into Jet Engines!
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