[Elecraft] Heil Handi Mic

[Mike Short]

 I am using the Heil HM-5, and the audio is just fine according to reports.
I didn't have to do anything special. I set SSb A menu to 2, and SSbB menu
to 3-1, 
And it works well for my voice.
Just another option.

Mike
AI4NS

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Monday, December 04, 2006 12:57 PM
To: Frank Van Cleef W1WCG; elecraft at mailman.qth.net
Subject: RE: [Elecraft] Heil Handi Mic

Frank,

Unfortunately the Heil HC-4 and HC-5 elements have lower output than typical
mics.  There is one in the Handi-Mic set that should work well with the K2 -
and that is the one for the Icom (Heil number HM-iC)  perhaps you could
arrange an exchange.

In general the Icom mics use an electret element with high output level -
the audio input needs of the K2 and the Icom are similar.

If you do wish to retain the HC-5 element, then your best choice is to use a
pre-amp.  There are work-arounds such as changing the value of KSB2 R14, but
IMHO, the best all-around solution is to use a pre-amp and set the pre-amp
gain to provide the output needed by the K2.  If I recall correctly, the
proper output level is -40 dBm.

73,
Don W3FPR

> -----Original Message-----
>
> I recently acquired a Heil Handi-Mic with the HC-5 element,
> intending to use
> it with a new K2 radio (#5510).  I used straight-across wiring for the
> configuration connector in the front panel since the Handi-Mic is
> equipped
> with a cable wired for Kenwood mikes.  No resistor from pin 1 to
> pin 6 since
> the element is dynamic.  The mike does work, but the output seems
> low -- the
> ALC indication barely lights the top bar, and the RF output
> barely shows on
> the louder peaks.  A MH-2 mike shows a little more output, though
> not that
> much more.  The over-all feeling is that the Handi-Mic has a
> relatively low
> output level and may need a preamp to work properly with the K2.
>
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