[Elecraft] K3 Rear panel PTT-in RCA jack doesn't work UPDATE

[Jerry Flanders]

I have learned that I should have 4.9V present on that line, and I 
don't, so it must be a hardware problem. I will try to fix it next 
time I open the radio up.

This list is great to solve problems lilke this. Thanks guys.

Jerry W4UK

At 01:46 PM 9/7/2008, Jerry Flanders wrote:
>I am beginning to wonder if my K3 Rear panel PTT in RCA jack has a 
>problem. It appears totally dead - I can't get it to switch the 
>radio to tx. Also, it has no voltage across it that I can pull down 
>by shorting the pins
>
>I must have some configuration option screwed up, but have tried 
>several changes to no avail.
>
>My front mic socket PTT works, as does both the radio PTT command on 
>the CAT and the RTS line when I set that option.
>
>What am I doing wrong? How can I prove to myself that this jack is OK?
>
>Jerry W4UK
>
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