I agree with Fred (Skip)- electret mic elements are hard to beat,
especially with Elecraft rigs or others which have frequency
compensation. The electret elements are small and inexpensive. With
their flat responses, they will need some equalization for use as ham
mics - reduced low frequency response mainly. If you want a boost in
the 3000 to 3500 Hz, equalization Will do it. They do need bias to
function, but that is no problem with Elecraft gear, just turn bias on
in the menu.
73,
Don W3FPR
On 3/21/2022 6:15 PM, Fred Jensen wrote:
"It would be great if these elements could be modified to perform better"
Au contraire, Tony. They were designed for a particular purpose and
they perform very well for that purpose. Unfortunately, that purpose
is just not normally found in ham radio.
It is very hard to beat electret mics. They're cheap, tiny, have flat
responses, and tend to be immune to breath-blasts if you talk across
them rather than into them. Some mics [dynamic and especially ribbon
velocity mics] will emphasize the lows as you move close to them. The
classic RCA 44-BX series [fairly large, prismatic-shaped one, Johnny
Carson used to have one on his desk] was particularly afflicted ...
when I was 17 and on AM, I sounded like I was 17. Crawl up very close
to the -BX and I sounded like Morgan Freeman playing God in "Bruce
Almighty." There is little speech information in the low frequencies
but a lot of power. Electrets are generally less prone to this. Most
of today's rigs provide the DC bias electrets require right on the mic
connector.
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