[Elecraft] HI CUR warning on K3

[Tom Doligalski]

I have used one for years. That said, I have had to replace the line isolator several times!

Also have one in the shack. 

Tom W4KX

Sent from my iPad 

> On Nov 8, 2023, at 10:49 AM, john at kk9a.com wrote:
> 
> I am not very familiar with a Carolina Windom but I believe it is just a
> horizonal wire fed off center.  These types of antennas can have significant
> common mode current on the feedline. Perhaps there is more current on 40m
> than on 80m so it works on 80m.  
> 
> A resonant dipole with a choke may solve this HI CUR issue.
> 
> John KK9a
> 
> 
> 
> 
> Pete Smith N4ZR wrote:
> 
> I send a few characters of CW into my Carolina Windom on 40M and after a
> delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
> warning, and the audio gain is reduced significantly.  Touch the AF gain
> control and it instantly returns the gain to normal, but frequently the
> HI CURR warning returns over and over, without any additional
> transmissions.  This sequence does not happen, even with 1500 watts,
> into my dummy load, nor does it happen on the same antenna on 80M, or on
> 20 meters on my tribander.
> 
> I've read the HI CUR warning discussion on page 65 of the manual, but it
> doesn't seem relevant, because I don't have external speakers.  The fact
> that it  only happens when feeding an actual antenna on one band
> suggests RFI, but the fact that the HI CUR warning and gain reduction
> recur again and again long after any RF has me puzzled.  Any suggestions
> gratefully accepted!
> 
> --
> 73, Pete N4ZR
> 
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