[Elecraft] Microphone capsule for K2

[David Wilburn]

I have a MH2, and going back and reviewing the SSB passband and filter
alignment helped me quite a bit.  It sounds fine, though I heard through
another on the list that they had success with their Proset with HC5
without the preamp.  I tried it out with a friend listening, and it
worked just fine, and is now what I use.  I do notice that it is
impacted by the nearness of the mic to my mouth, so it would likely have
more dynamic activity with a preamp, but I am driving to a full signal
with the current setup.

If you are not getting good reports with the MH2, then switching to
another, similar mic (or even the HC5) will not help.  First thing you
need to do is check you passband, make sure they start at 300hz and then
listen to both U & L sideband on another rig.
-  

David Wilburn
k4dgw at k4dgw.com
K4DGW
K2 S/N 5982


On Sun, 2008-01-06 at 13:29 +0100, Karsten Eppert (DK4AS) wrote:
> I have purchased together with my K2 an MH2 microphone short before it 
> was discontinued two years ago.
> The reports I receive always state, that the mike has too much bass.
> The filters of my K2 were checked with spectrogram and - to me - appear 
> correct.
> 
> In parallel I have tried a cheap boomset with an electret-mike. That 
> resulted in unfavourable reports like "sounds like a c-class-amplifier. 
> Too little bias current". So I checked the bias and it is ok.
> 
> Well - I?m looking for a good alternative now, but which one to select?
> 
> Go for a Heil Proset K2? I figure, that one contains the Heil 
> iC-electret-capsule. But what are the specs?
> 
> Go and replace the electret-capsule of my MD2 with a Heil HC-5-capsule? 
> What disadvantages will I have with such solution regarding frequency 
> response as the HC-5 apparently is a dynamic or condenser mike?
> 
> Can anybody share his experience with me?
> 
> 73
> Karsten
> DK4AS
> K2 #4764
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