[UK-CONTEST] RS232 1 Radio / 2 computers

[Adrian Rees (MW1LCR)]

I have been thinking about this today.

Mark is quite correct about the Polling of the Port, but, I wonder what
would happen if certain lines on the Comm Port are disconnected ? ....Could
N1MM be dupped (no pun intended) into thinking two radio's etc ?

You could try using a "Break out" box. These used to be available. Each one
is set up so that you can place it in line with a Comm Port and either make
or break each line, as well as "Patch" lines.

Whats this for, by the way ? Some sort of training exercise?

Adrian



-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com]On Behalf Of Mark Marsden
Sent: 25 July 2006 17:36
To: Callum M0MCX; UK-Contest
Subject: Re: [UK-CONTEST] RS232 1 Radio / 2 computers


Hi Callum

I asked exactly this question on the N1MM reflector in January this
year, but I got no replies.

The RS232 transmit line from the MP can go, by a Y-cable, to both PCs Rx
in lines, but only one PC can talk to the MP (at any one time).

Both instances of N1MM will be polling the MP and will expect responses
to their polling messages. I haven't tried it but I would expect
messages like "Port not found" or something like that.

Please let us know what happens if you try it out.

Best 73, Mark G4AXX

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of Callum M0MCX
Sent: 24 July 2006 20:28
To: 'UK-Contest'
Subject: [UK-CONTEST] RS232 1 Radio / 2 computers

I have a requirement to network 2 x computers to one FT1000MP so that
they can both read the frequency off the same radio using N1MM as the
contest logger via RS232



Basically, I want to organise "Big Knob Little Knob" (2OSR = 2 Ops
Single Radio!).



Has anyone done this? Will it work with a Y cable..?



Kind regards,



_____________________________________________

Callum McCormick

M0MCX | 65 Glendon Way | Dorridge | B93 8SY

t +44 (0) 1564 230255|  m +44 (0) 7976 631881
______________________________________________



 <http://www.mccormick.uk.com/> http://www.mccormick.uk.com

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