Hi again Tom,

I use the Heil Proset Plus also with a K2/100 and have left R14 at 1K, no
other changes. My KSB2 was supplied with :

               R4  56K  ( had been 390K}
               R7  33K  ( "       "      3.9K)
               R9  10K  ( "       "      3.9K)

              C38 47uF  (had been  2.2uF)

               Crystals X1 - X7 marked 4.9136 MHz, calibration ref 3.7.  Had
been 4.915 MHz.

Full specified PEP out on all bands into calibrated 50 ohm dummy load
speaking in normal coversation voice across the top of the boom mic, both
HC-4 and HC-5. ALC "indicator" very occasionally flickers as would be
expected. No problems with compression. No external audio pre-amp required.
Get compliments on audio quality!!

73,

Geoff    GM4ESD      K2/100 #3255

----- Original Message ----- 
From: "Tom Althoff" <[EMAIL PROTECTED]>
To: <elecraft@mailman.qth.net>
Sent: Wednesday, November 10, 2004 11:45 AM
Subject: [Elecraft] Heil ProSet Plus with K2


> I currently use a Heil ProSet Plus with the dual mike element boom on my
> Orion.   I want to buy the adaptor for the ProSet to connect to the K2.
>
> The only mention I see of Heil in the Common Question Archive mentions
> changing R14 on the KSB2 board from 1K to 10K.  But this info dates from
> 2001.
>
> Does anyone have any experience using the Heil mikes with the K2 who can
say
> if they had to make any changes to the mike input circuit?
>
> Tom K2TA
> K2 #1117
>
>

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