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 the VOX
circuit, but additional audio gain between the mic elements and
modulator would result in overdrive. Perhaps my K2/100 is a positive
tolerance version.
Interesting point, as I have that same issue with my Heil ProSet (HC5) and my
Kenwood TS-2000. The rig has more than adequate modulation with this mic, but
not enough gain in the VOX circuit to make VOX usable. Seems to me that the
gain through these two audio paths ought to be proportionate in a good
design -- i.e., if max modulation gain is just enough for full modulation,
then max VOX amp gain should be just enough for effortless VOX operation.
Bill W5WVO
73,
Geoff
GM4ESD
John R. Lonigro <[EMAIL PROTECTED]> wrote:
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 is essentially the version with the electret element,
but I'm not 100% certain on that matter.
All Prosets require an adapter to match your particular mic jack
configuration, so that is not a factor.
No idea about the K3.
73's,
John AA0VE
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