[Elecraft] Desk Mic for K2/100

[Donald Nesbitt]

I've been using the D-104 with the Astatic element with great success =
and reports on the K2/100.  I do have additional D-104 heads with the =
Heil elements - actually two, one with the HC-4 and one with the HC-5 - =
but really don't like them as much as the stock Astatic - either crystal =
or ceramic cartridge (although I prefer the crystal).  The stock =
Astatics seem to have a certain "brilliance" that the Heil mics just =
don't seem to match - at least in my opinion and the opinion of almost =
100% of those on the receiving end of my signal).  Using the stock =
D-104,  you will need some means effect an impedance match - and - a =
little amplification for use with the K2.  If you have an amplified base =
for the D-104, these two items are taken care of (just don't use too =
much gain!)

One "old" trick to using the D-104 (without an amplified base) with low =
impedance input rigs is to put a large resistance pot (I usually use a =
1meg but 100k will probably work but without quite as much control) =
across the output of the D-104 - taking the audio output from the wiper =
- and then adjusting  the pot until you get a good balance of highs and =
lows (these mics were designed to look into a high impedance and can get =
quite "tinny" when sent directly into a low impedance).  Of course, this =
only works with rigs that have a sufficient amount of audio gain in the =
input circuit - and - the K2 is a little skimpy in this area!

IMHO:  All in all, the amplified base takes care of the problems and the =
audio is spectacular!  " 73 es gud dx  --don  N4HH  K2/100 #2028


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