[Elecraft] My KX3 desk microphone project

[Gary K9GS]

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> Just curious...what is the point of paralleling 4 microphone elements?
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> On 1/22/2015 10:44 AM, Gary - NC3Z wrote:
>> I wanted a desk mic to go along with my KX3 station. Wanted something 
>> more portable than the Heil boom and mic I use on my other radio. I 
>> have experimented with dynamic mics on the KX3 and didn't get the 
>> results I liked but did get very nice results with using 4 CUI 
>> electret condenser mic elements in parallel. I used the CUI 
>> CMA-4544PF-W from Digikey and used a small project circuit board to 
>> physically arrange them in a 2 x 2 config. Then I trimmed up the board.
>>
>> For the mic body I found a unused Shure 522 on ebay (some company had 
>> them for a conference table system and had a great price). The 522 
>> has an adjustable neck height and a PTT (with lock). I gutted the 
>> body and fitted the new electret element assembly as well as used a 
>> 3' TRRS patch cable that I cut 1 end off for the mic cable, it also 
>> had 90 deg ends.
>>
>> I am pleased with the physical results as well as very good audio 
>> reports I am receiving from the regulars that know my signal, still 
>> not to the level of my FTDX5000MP but getting better with each tweak 
>> and DSP update (using 1.32 which has made a noticeable improvement). 
>> I am using a healthy level of compression and mic gain that shows a 
>> solid 5 bars.
>>
>
>
> -- 
> 73,
>
> Gary K9GS
>
> Greater Milwaukee DX Association: http://www.gmdxa.org
> Society of Midwest Contesters: http://www.w9smc.com
> CW Ops #1032   http://www.cwops.org
>
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