Just curious of why the focus on the ICOM mikes? When I looked at the
drawing for the pins on the front panel, it looked like the Kenwood was
the least complicated to wire.
A bit off topic, the Heil website does not show the hand mikes anymore.
Well not a 'real' hand mike that sits and your hand as something
rugged. They have these little microphone mikes. Not something that
I'm interested in connecting to any of my radios. If I want a hands
free setup, I'll use a headset and boom. Bar that, if I want to talk on
a mike and listen via the speaker, I want a substantial mike that feels
like I have something in my hand.
My current plan is to wire my K2 up for the Kenwood microphone. My
other radio is a TS-570. The assumption on my part, is that I will then
be able to use my Heil headset on both the Kenwood and the K2. Is this
a valid assumption?
David Wilburn
[EMAIL PROTECTED]
Don Wilhelm wrote:
The Heil microphone preamps are required for the Heil microphones using the
HC4 and HC5 elements. The electret elements do not need a preamp (but they
do need a resistor at the mic jack). The Heil mics designated for use with
Icom transceivers are usually of the electret typw and work quite well with
the K2.
Remember that Heil has a wide variety of mics, just saying that you are
using a Heil mic is not sufficient information, one must specify WHICH Heil
mics - they are not created equal. I guess an anology is that you would not
refer to an automobile as a General Motors car - you must specify if it is a
Chevrolet, a Buick, a Cadillac, etc., and in many cases one must also
specify which variety of Chevrolet, Buick, etc. Heil mics are much like
that.
So, yes choose the Icom mics if possible, but if you prefer those with the
HC4 or HC5 elements (those elemetns have low ouput), you should plan to add
a mic preamp. As far as I know, no PC boards or kits are available for the
mic preamps.
73,
Don W3FPR
-----Original Message-----
Hi, sorry if this repeats previous information request, but I did
a lot of
searching and didn't find anything directly on point (even though
there were
several threads on preamps and Heils, etc.)
I downloaded the Microphone Pre-Amp for Heil schematic on the Elecraft
website.
My questions are:
1. Does anybody make a PCB for this project? I imagine all
these parts are
available from Radio Shack or Mouser?
2. Does the preamp make the microphones work really well, or is it just
something that "gets you by?"
3. As far as Heil microphone modules go, if I build the preamp,
and want to
buy the Classic, can I use any module, like the Pro, HC-5, HC-4,
etc., or
should I get the ICOM only module, which I believe is an
electret module. I am
a bit confused about all this. I asked Elecraft and they said I
should get
the electret module. Bob Heil said the Classic was not a good
choice for the
K2 and he suggested his iCM mic for ICOM. Doesn't the iCM mic
have the same
electret element that the Classic with the IC element has? If
all I needed
was an electret element, do I need the preamp at all, or does it
make the
electret work even better?
4. Once I build the preamp, is it something that I can tuck into the
microphone itself (like a Heil Classic) or does it go inside the
K2 or do I need to
put it into it's own little enclosure.
Thanks for your help. I am a new ham, and am trying to sort through all
this stuff.
Christ Kacoyannakis
K4CMK
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