Thank you for the hints.
Thanks to your and other's comments on the Elecraft list I have found
numerous good examples with some as minimalistic as a FET + passives all
the way to a good Instrumentation Amp + passives.
This has inspired me to create a circuit based more on the modern In-Amp
m
I am pretty sure that there are a couple of very simple circuits in
"W1FB's Design Notebook" that specifically use the "D104 ->
modern_radio" as an example.
Greg
KI4MMM
K2 #6100
On Sep 6, 2007, at 1:29 PM, Don Wilhelm wrote:
John,
If your D104 is an older one with the high impedance crystal
John,
If your D104 is an older one with the high impedance crystal or ceramic
element, yes it will not work so well (if at all).
There was an article in QST about a year ago with a circuit design that
had a very high impedance input and the low impedance output required by
modern day radios,
Geoffrey Mackenzie-Kennedy wrote:
Never had a problem John getting full rated PEP output from K2/100
#3255 using the HC-4 and HC-5 elements in the Heil ProSet Plus
headset without an external preamp, but I don't use the K2/100's VOX.
If I used VOX a little more audio gain would be required in th
Never had a problem John getting full rated PEP output from K2/100 #3255
using the HC-4 and HC-5 elements in the Heil ProSet Plus headset without an
external preamp, but I don't use the K2/100's VOX. If I used VOX a little
more audio gain would be required in the VOX circuit, but additional audi
Thanks for the information all.
So...
I guess hooking up a D104 straight to K2 is not going to work out so
well. Yes I know this is like putting tail fins on a Ford Taurus, but
the kids really dig talking into a mic like that during times we promote
ham radio.
The D104 with my old Kenwood
John and all,
You are correct that 'Heil Proset' by itself does not adequately
describe the microphone. As is the case with all Heil mics, one must
also be specific about the mic element used.
The K2 works best with an electret element because they have higher
output levels. The K3 FAQ pag
John and Charles:
The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough
output to drive the K2 without either an external preamp or tweaking of
the K2's internal circuitry. The version with the electret element
seems to work better with the K2. I believe the Heil K2 Proset i
On Wed, 05 Sep 2007 06:53:40 -0400, John Huggins wrote:
>What is it that makes any microphone
>"optimized" for any radio. Pin outs are obvious of course.
Many years ago, an international standards organization issued a
poorly thought out standard for 2-way radio communications that,
if follow
Marketing. :)
--
Julian, G4ILO K2 s/n: 392 K3 s/n: ???
G4ILO's Shack: www.g4ilo.com
Ham-Directory: www.ham-directory.com
On 9/5/07, John Huggins <[EMAIL PROTECTED]> wrote:
>
> Charles brings up a good point. What is it that makes any microphone
> "optimized" for any radio. Pin outs are obvio
Charles Harpole wrote:
I see that now Elecraft is offering sale of a Heil K2 Pro Set
mic/headphone unit, saying it is "optimized for K2." I assume that
also means K3.
Charles brings up a good point. What is it that makes any microphone
"optimized" for any radio. Pin outs are obvious of co
Hi Jim - I use my old D-104 with the original crystal cartridge all the time
with my K2 and get great reports. No need for a preamp, etc. as the crystal
cartridge has output to burn!
The problem with using a nonamplified D-104 with the K2 is that the D-104 is
a very high impedance mic and the
Jim,
Not difficult IMHO, but you decide on the level of difficulty for you.
Certainly that D104 can be made to work with the K2. If it is the amplified
version, no problem, just give it the proper microphone plug and all will be
well.
If it is the unamplified version, then you will have to buil
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