[Elecraft] K3s: microphone connector 8V current

Don Wilhelm donwilh at embarqmail.com
Sun Jul 26 19:46:42 EDT 2020


Henk,

If indeed it is for a mic preamp, then try it without the preamp.  The 
K3S has 2 stages of mic AF gain.  Normal for the usual ham mics, and a 
Hi level for low gain mic elements.

You must turn on bias to have the 8 volts appear at the mic jack.  Do 
not use with direct connection of a dynamic mic - it makes the mic 
'sound funny'.

73,
Don W3FPR

On 7/26/2020 5:40 PM, Nr4c wrote:
> What are you going to use this  voltage for? I think it’s for a mic preamp. It is not the source of bias for an electret mic. That comes on the mic pin when turned On in the menu.
> 


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