[Elecraft] Question about mike performance

[Don Wilhelm]

John,
Well, the limited bandpass is to be expected if you are using the stock SSB
filter - it is about 2 kHz wide.  If you want to 'tune it up', use
Spectrogram and center the passband between markers set at 300 and 2300 Hz.
That should yield the best general voice quality for that width filter.  You
can vary it a bit (not more than 50 to 100 Hz though) if your particular
voice spectrum needs to be a bit higher or  lower than average.

If you want to change the filter width, I highly recommend the work by John
Grepenkemper KI6WX - "Improving the Performance of the KSB2".  Many have
installed the capacitors for the  2.5 kHz bandwidth filter and have been
pleased with it.  I will be putting it on my K2 soon.

I would not worry about the mike frequency response too much - the level to
drive the K2 is a different animal though.  It sounds like you were
overdriving with the mic amplifier, but now that you have identified that -
you know how to deal with it.

73,
Don W3FPR

----- Original Message -----
|
| But audio quality was decribed as hairy. Maybe overdriven audio, so I
turned
| off mike amp switch at bottom of my Kenwood MC-60. That fixed that. My
audio
| was then said to be communication quality, futher describe as lacking high
| end and low end.
|
| I really don't know what I should expect out of the MC-60, but I have got
| good audio reports using it with Omni-D. This brings me to my question, Is
| this just a lackluster mike or might I be clipping my SSB signal with
| transmit filter on the K2 end? I belive transmit uses FL1 OP1, what would
be
| the most practical way to determine which is the case? Is there a way to
| look at mike AF range without running it thru the K2?
|