[UK-CONTEST] Icom Pro III + N1MM

[Roger Cooke]

Hi All.

  Many thanks to all who answered my plea for help!  The problem has been solved and indeed it was
a keying problem, as I suspected. He had put a resistor to the +12v rail for keying another transceiver
and had forgotten about it. Removing it cured the problem and the Pro III is sending its usual immaculate
CW.  Quite funny really because he is not interested in contesting, but Geoff, G4ODC had problems with
his kit so Robert offered his. Now Robert is quite interested and enthused about N1MM!   I just hope he
does some contesting now for NARC....

  Thanks again.

 
Regards from Roger, G3LDI
Swardeston, Norfolk.




----- Original Message ----
From: Clive Whelan <clive.whelan at btinternet.com>
To: Roger Cooke <g3ldi at yahoo.co.uk>
Cc: uk-contest at contesting.com
Sent: Tue, 5 January, 2010 13:13:51
Subject: Re: [UK-CONTEST] Icom Pro III + N1MM

Hi Roger

First the good news, the combo works perfectly, and I use a pair of PROIIIs with N1MM. I think we need a bit more info. What is the keying method, serial port, parallel port, Winkey or ?.......  What computer/OS? Parallel port keying is problematic under XP or anything > W98. Winkey is highly recommended  , but serial port  will work  with a simple 2N2222  interface. Simple check: make sure the  interface  is shorting to grnd on xmit  with e.g. a multi meter. Oh forget about about the DIN plug just use the standard 6mm jack socket.

73


Clive
GW3NJW

Roger Cooke wrote:
> Hi.
> 
>   A local station has the above combination together with a home-brew interface, a basic one and has a problem keying the transceiver. N1MM puts the transceiver into transmit and seems to send CW, but there is no power being radiated and no side-tone. He is keying it via the DIN plug on the back apron of
> the transceiver. When keying the CW jack direct, as I suggested, the same thing happened. We have been through all the combinations in N1MM Config with no improvement, so it looks like a transceiver
> problem. I don't have one and have not seen this before. Can anybody shed light into Norfolk please?
> 
>  Regards from Roger, G3LDI
> Swardeston, Norfolk.
> 
> 
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