Hello Ian,
I have used a Heil HC-5 element from the very beginning with my K2, and
have always found that I needed to shout into it in order for it to work
satisfactorily. However, that same microphone, a Heil HM-10, worked very
well with my '746PRO.
In my case, I found that the levels were such that in order to overcome
the 'knee' of the built-in noise-gate of the K2's compressor chip, I had
to speak too loudly for comfort. If I spoke in a more normal manner,
only the peaks would make it over the threshold.
I built the single transistor circuit of N0MF, Mike on a 1/2" x 1/2"
circuit board, and just kind of stuffed it inside the HM-10 housing, and
it made a big difference. I can even run the K2 with the compressor off,
and while speaking at a normal level I still have plenty of drive, and
have received quite a few unsolicited positive comments about the audio.
I'd highly recommend you try out the circuit. I think you'll be very
pleased with the results.
73, Dale WA8SRA
Ian J Maude wrote:
Hi all,
I am currently using my K2 with a Heil HC-5 insert to good effect on
DX. I was wondering though if I should build a little pre-amp for the
mic? I notice there is a circuit on the website and I wondered if I
would gain anything from building it? I don't want to put too much into
the K2 from the mic, I would just like to up the audio a little.
Your thoughts appreciated.
72/73
Ian
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
