[Elecraft] Microphone capsule for K2

[AJSOENKE at aol.com]

In a message dated 1/6/2008 6:21:57 A.M. Pacific  Standard Time, 
dave.wilburn at verizon.net writes:
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
> _______________________________________________
web page: _http://www.elecraft.com_ (http://www.elecraft.com)   

I have run the Proset HC5 and the Elecraft Proset Which has an electret mic  
element and found them to both work well and also sound very much alike.  I  
ran the checks while beta testing the IMA (Internal Mic  Adapter) produced by 
UN-PCB. _http://www.unpcbs.com/_ (http://www.unpcbs.com/) 
 
Al WA6VNN



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