A K2, an MH2 mic, and a digital interface

[omehegan]

...walk into a bar... Just kidding.

I've had my K2 for almost 2 years now, and in that time I've used it  
almost exclusively for PSK31 and occasional forays into CW. I have an  
old Yaesu desk mic that I wired up for it, but I never really use it.  
I think I'm going to purchase an MH2 hand mic, but I noticed in the  
instructions for it that I will need to add a bias resistor to the  
microphone jack on the rig. I use a SignaLink USB interface for PSK31,  
which connects to the mic jack. Is adding the bias resistor likely to  
cause me any difficulty with the interface? Some specs on the  
interface are available here: http://www.tigertronics.com/slusbmain.htm

Thanks in advance!
--
[hidden email] (Owen B. Mehegan)
'We shall not cease from exploring, and at the end of our exploration,  
we will return to where we started, and know the place for the first  
time.'
   --T.S. Eliot



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[Don Wilhelm-4]

OK "T.S Eliot" (sign with your real name and call please).

That link does not give a schematic, so I cannot give a specific
answer.  If the interface provides a series capacitor to block the DC
then it will work just fine with the microphone bias resistor required
by the Elecraft MH2, but if there is a DC path to ground (through the
transformer) the bias resistor will be a problem.

I think the folks at Tigertronics (and other interfaces) should be more
free with their schematics, but alas, they are not - maybe they are
hiding their details.

73,
Don W3FPR


On 7/2/2012 12:47 AM, Owen B. Mehegan wrote:

> ...walk into a bar... Just kidding.
>
> I've had my K2 for almost 2 years now, and in that time I've used it
> almost exclusively for PSK31 and occasional forays into CW. I have an
> old Yaesu desk mic that I wired up for it, but I never really use it.
> I think I'm going to purchase an MH2 hand mic, but I noticed in the
> instructions for it that I will need to add a bias resistor to the
> microphone jack on the rig. I use a SignaLink USB interface for PSK31,
> which connects to the mic jack. Is adding the bias resistor likely to
> cause me any difficulty with the interface? Some specs on the
> interface are available here: http://www.tigertronics.com/slusbmain.htm
>
> Thanks in advance!
> --
> [hidden email] (Owen B. Mehegan)
> 'We shall not cease from exploring, and at the end of our exploration,
> we will return to where we started, and know the place for the first
> time.'
>     --T.S. Eliot
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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Help: http://mailman.qth.net/mmfaq.htm
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Please help support this email list: http://www.qsl.net/donate.html