I have used electric elements in the D104 and they worked quite well.
If you want a dynamic element, I suggest the HC4 or HC5 from Heil
Sound. I don't know if Heil is still selling those mic elements
separately, but they do work well in the D104 (and other mics). Just add
enough foam padding to keep the element in place and you are done.
I have a D104 frame with an HC5 element and it works quite well. I also
have a vintage D104 with the original element with an FET in the base
that also works well - the FET is powered by the bias voltage from my K3
or K2. I know that does not help if the original D104 mic element has
gone bad.
73,
Don W3FPR
On 2/22/2022 8:19 PM, Dr. William J. Schmidt wrote:
No replacement available...
Well... that's not entirely True. If you search a little, you can find
places all over the internet where you can buy "old stock" or "removed" D104
elements. Just depends which one/ kind you want. IN FACT just a few years
ago I bought a hand full of "authentic Astatic, old stock" the later crystal
replacements... brand-new... from one of the big electronic houses like
Mouser or Digikey (can't remember which one actually). I think they were in
the $28 each...
Just search. Here are a couple that I found in 30 seconds:
https://www.theharpmicshop.com/crystal---ceramic-mic-elements.html
http://www.kenselectronics.com/lists/micpart.htm#Cartridges
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