At 06:03 AM 2005-12-10, W3FPR wrote:
It is a well known fact that the Heil HC4 and HC5 mic elements have an
output level 6 to 10 dB below that of most other ham mics. Transceivers
with a mic gain control can usually handle the lower output, but those
without the control (notably Elecraft and ICOM) have difficulty with Heil
mics.
ICOM transceivers do have mic gain controls, but the older ICOM
models are designed for mics with internal preamps. I have a
standard Heil headset that I use with a Heil HMP preamp to drive my
IC-765. It uses the +8v line from the ICOM 8-pin plug for power.
73, Terry N6RY
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