[Elecraft] Knowles HC-3 Mic Element Replacement For Heil HC-5

[Tony]

Jim:

> Close-talking" microphones are designed for use in very noisy 
> environments, like military aircraft.They are not directional, rather 
> they cancel all sounds more than an inch or two from their element.  
> 73, Jim K9YC 

That seems to be the case with the Knowles HC-3. It would be great if 
these elements could be modified to perform better. I've been searching 
for a drop-in headset element that has the same sensitivity and response 
curve as the original Heil HC-4 / HC-5 (see below). They have great 
articulation and work well with rigs that don't have TX-EQ. Used HC-4/5 
elements are pricey!

Tony

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