And if all of this fails look for a blown HPA.
Wes N7WS
On 10/10/2018 8:29 AM, Don Wilhelm wrote:
Gary,
If you just plugged in the MH4 and turned on bias, then I suggest that may be
the cause of the problem.
Assuming you had the K3 set for the low output Heil microphone, you should
change the MIC SEL menu to FP.L bias. If you have MIC SEL still set for FP.H,
you may be overdriving the mic preamp. The MH2 has a high output level, so you
need only low gain in the K3.
Then initially set the compression to 0 and set the MIC GAIN to produce 5 to 7
bars on the ALC meter while speaking into the microphone in a normal voice.
Once that is done, set the compression to a moderate level of your choice.
As Bob K4TAX has pointed out and K9YC has long advocated, set the lower 2
bands of TX EQ to the lowest levels and set the 3rd band down a bit as well -
that will increase your "talk power" while not wasting power trying to
transmit those low frequencies which are not needed for intelligibility. If
you are into ESSB, you may differ, but ham radio is not HI-FI in my opinion,
it is about communications effectiveness.
73,
Don W3FPR
On 10/10/2018 2:10 AM, Gary Smith wrote:
My 30 year old heil element finally bit
the dust. I bought an Elecraft MH4
hand-held mic and am trying to get it
adjusted.
I checked in with a local net and was told
there is a kind of clipping on my words,
like the ends of some word were being cut
off. Another report said it sounded more
like there was an artificial sound
in-between the syllables, that it wasn't
on the peaks but noted in the the troughs,
perhaps a bit of clicking in there.
I don't hear any difficulties with the
monitor, everything sounds like normal
words with no distortion. I'm not using
VOX and have no idea what I might try
looking at to resolve this.
As to the equalizing of the MH4, is there
a set of values with the 8 bands to give
it more of a character of a Heil HC4
element or something well suited for DX?
Any suggestions on the clipping & Mic TX
EQ & what I might try doing to resolve
this?
73,
Gary
KA1J
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