[Elecraft] Heil HC-5 Taiwanese Equivalent?

[Louandzip]

 The hole in the Heil cartridge might be tiny to help tailor the frequency response? 

    On Monday, February 1, 2021, 1:15:21 PM MST, <donovanf at erols.com> wrote:  
 
 I suspect you've discovered Bob Heil's source! 


It looks exactly like the HC-5 except the HC-5 has two solder pads 


The HC-4 has a tiny hole, much smaller than in the photo 


73 
Frank 
W3LPL 

----- Original Message -----

From: john at kk9a.com 
To: elecraft at mailman.qth.net 
Sent: Monday, February 1, 2021 3:55:52 PM 
Subject: Re: [Elecraft] Heil HC-5 Taiwanese Equivalent? 

Used Heil HC-4 and HC-5 elements are very easy to find in the $70 
range. I had poor luck getting my HC-4 mic to sound good when I 
purchased my first Elecraft K3s so I switched to the Heil IC electret 
element and it sounded much better. 

John KK9A 



Tony wrote: 

I was looking an original Heil HC-5 microphone element for my KX3 when I 
came across this unit from an unknown manufacturer in Tawain: 

See: 
https://www.electronicsurplus.com/qw442-1740-audio-microphones-element-only-miniature 

There's no frequency response curve or other information other than a 
comment about the element favoring higher frequencies. I've emailed the 
seller to find out more. 

I have an original HC-5 that produces excellent communications audio 
with my K3S and it would be nice to find one for the KX3. If anyone has 
an original HC-5 laying around, please let me know. 

Tony 

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