[Elecraft] K3s: microphone connector 8V current

[Grant Youngman]

I have the same question about the current available for the 8V at the mic connector.  Is it limited to 10ma, or will it actually support a somewhat higher continuous current draw safely.  Not just for the k3, but also the K4.

Grant NQ5T


> On Jul 26, 2020, at 7:46 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> 
> 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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