Heil Handi Mic Configuration Question

[Gottlieb, Jonathan]

I am finishing up K2 #5113 and have run into a snag configuring the
microphone on the K2SB2.  I am using a Heil Handi Mic HM-IC.  Bob Heil
told me to get this mic as he said it would optimize my 706 MKIIG and
the K2.  I'm using the Kenwood 8 pin cable for the K2, again per Heil's
recommendation.  I've set up the P1 on the K2SB2 for the Kenwood mics
using block jumpers.   Setting the K2 power for 2 watts, when I push the
PTT, I'm getting a carrier at over 10 watts out.  No modulation when I
speak, just a constant key down carrier at a very high power output.
I'm using a very reliable and accurate Waters analog watt meter.  Any
ideas on what I've done wrong and what I need to do to fix this?
 
Jonathan Gottlieb
WA3WDK
K2/100 # 4853
K2 #5113







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[Don Wilhelm-3]

Jonathan,

At best we can but guess that your mic (or the K2 mic configuration header)
is not connected as you expect - did you add the resistor on the back of the
mic jack or the mic configuration header to support the use of the Electret
element (since this is an ICOM type mic based on the -IC suffix, I assume
the element is the electret type, but again I could be wrong on that).

Bottom line - trust no one until you can substantiate that what you have in
your hands is connected as expected.  It may take the steps of disassembling
the mic and checking continuity from the element and PTT switch to the pins
on the mic plug to really know the truth of that matter.  Until that is
known, everything is a 'guessing game'.  Heil has a wide variety of mic
configurations and some very different wirings appear under the same mic
type number, so you have to know what you have in order to connect it
properly.

Once we know the element type (dynamic or electret) and know which signals
appear at what pins on the mic plug, we can tell you how to configure your
mic configuration header.

One other thing - the carrier that you experience may be the result of
failure to properly set the carrier balance pot on the KSB2 board.  Have you
done all the KSB2 alignment yet?

73,
Don W3FPR

> -----Original Message-----
>
> I am finishing up K2 #5113 and have run into a snag configuring the
> microphone on the K2SB2.  I am using a Heil Handi Mic HM-IC.  Bob Heil
> told me to get this mic as he said it would optimize my 706 MKIIG and
> the K2.  I'm using the Kenwood 8 pin cable for the K2, again per Heil's
> recommendation.  I've set up the P1 on the K2SB2 for the Kenwood mics
> using block jumpers.   Setting the K2 power for 2 watts, when I push the
> PTT, I'm getting a carrier at over 10 watts out.  No modulation when I
> speak, just a constant key down carrier at a very high power output.
> I'm using a very reliable and accurate Waters analog watt meter.  Any
> ideas on what I've done wrong and what I need to do to fix this?
>
> Jonathan Gottlieb
> WA3WDK
> K2/100 # 4853
> K2 #5113
>
>
>
>
>
>
>
> __________________________________________________________________
> __________________________________________
>
> CONFIDENTIALITY NOTICE: The information contained in this e-mail
> is confidential, may be legally privileged, and is intended only
> for the use of the party named above. If the reader of this is
> not the intended recipient, you are advised that any
> dissemination, distribution, or copying of this e-mail is
> strictly prohibited. If you have received this e-mail in error,
> please immediately notify us by telephone at 612.335.1500 and
> destroy this e-mail.
> __________________________________________________________________
> __________________________________________
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
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>
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[Ed Findley]

I am using the same mike with the kenwood cable on my K-2.  Since it is
basically the same Heil mike that was made for the K2 but is no longer
available- I used the settings (jumpers) as described for the Elecraft MH-2
in the manual for the KSB2.  To include the 5.6 K resistor from pin 1 to pin
6.  Works well.  Do not use the Kenwood jumper settings.

Ed Findley N5LDY
K2 #1073 FP #1233
SKCC #868


I am finishing up K2 #5113 and have run into a snag configuring the
microphone on the K2SB2.  I am using a Heil Handi Mic HM-IC.  

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