[TowerTalk] Six meter balun

[Mike Fatchett W0MU]

The Innova balun is coax run through about 6 cores.  Not sure the exact 
number.  They recommend raising the balun off the boom for a bit and 
keeping the coax off the boom for a bit to reduce any coupling.

Were you using high quality connectors?  Any rain lately? Adaptors from 
n to pl?

It could certainly be a dirty relay contact.

W0MU

On 7/2/2022 4:47 PM, Dave Sublette wrote:
> My six element 6M LFA is showing a high SWR and severe loss of receive
> signal.  This happened this afternoon as I was working the band with 500
> watts from my KPA500.
>
> To this point, the antenna was very nicely matched with a 1:1 SWR over
> almost 1 MHz of bandwidth. The antenna is home brew and I made the matching
> balun per the instructions from K9YC using two toroids with six turns each
> of high quality teflon insulated, double shielded silver braid. I think it
> was RG142 purchased new from a reputable vendor in Tennessee. It has worked
> perfectly at the 100 watt level for three or four years.  I had looked at
> the specs on the coax and thought it would be good for 500 watts.
> Evidently not.
>
> So what is the consensus on what coax I should use?  I don't want to go
> through the hassle of replacing it only to have it go bad again.
>
> There is one other possibility that the position on the RCS10
> remote antenna switch has gone bad.  I haven't had a chance to get out
> there and check it out yet.
>
> I am looking forward to your advice.
>
> 73,
>
> Dave, K4TO
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