[UK-CONTEST] Using DVK with N1MM and FT1000MP (private email)

[Mark Marsden]

Hi Dave

Have a look at the N1MM site to see how to do it for (almost) free. The way we, the Granta CG, did it recently in SSB Field Day is to feed the mic straight into the soundcard, and feed the speaker out of the sound card, through an isolating transformer, to the mic input of the tx.

That way, both live mic, and recordings can modulate the Tx directly. Oh, and Windows sounds too, if you don't turn them off, hi!

There are some pictures of the setup, for two operators, and our SSB Field Day fun on
http://granta.g4axx.com/SSBFD09.php3

Vy 73, Mark G4AXX    

-----Original Message-----
From: uk-contest-bounces at contesting.com [mailto:uk-contest-bounces at contesting.com] On Behalf Of G3ZQH
Sent: 10 September 2009 21:09
To: uk-contest at contesting.com
Subject: [UK-CONTEST] Using DVK with N1MM and FT1000MP

I'm looking for a simple (and preferably cheap!) way to implement digital voice keying to improve my set up for SSB contests (and to save my voice and the complaints from family members during 48 hour contests...). Hopefully there are some experienced hands who can give advice here. 

The commercial interfaces (eg MicroHam) seem very expensive (£250+) so really looking for a more DIY option. CW contest keying works well and easily with N1MM/WinKey/FT1000MP but it seems much more complicated to be able to record audio direct from the rig mike as and when needed during a contest. I'm thinking along the lines of taking the mike audio from the back of the rig and using an isolating interface to the laptop mic/phone sockets (I have an old G3LIV Kenwood interface which might be adaptable- but no info on wiring etc) but I don't have enough knowledge of how to put this all together.

So any advice would be very welcome on interface circuitry which is relatively easy to assemble or perhaps a more affordable commercial interface which I'm not aware of?

Thanks

Dave, G3ZQH

 

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