[Elecraft] KLAT500 Getting tired?

[Fred Jensen]

You might want to put a good ohmmeter on your Cantenna.  They left the 
new market quite awhile ago, mine measured 105 ohms and I "canned it" a 
few months ago.  It was vintage 1967 and also responded to tipping the 
can some.  The load resistor in them will deteriorate over time, much 
faster if it's run hot for a period.  Have never had a problem with the 
KAT3 ATU, my K3 is S/N 642.  I had a KPA500 and KAT500 for some time, 
discovered that it takes around 20-25 W to tune reliably.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

> dave ingebright via Elecraft <mailto:elecraft at mailman.qth.net>
> Wednesday, July 16, 2025 9:40 AM
> Two Elecraft tuners (main and spare) are finding erratic solutions on 
> all three antenna outputs. It's driving me crazy due to both exhibit 
> the same problem. It will find a solution one day, but not the next, 
> or an hour later on the same or a different band. New coax, cantenna 
> verifies.
> If I connect the cantenna to the end of the coax next to the antenna, 
> same condx. Then I go back to it and it's OK. I left the cantenna 
> connected when troubleshooting a few days ago, and went on the next 
> day (and forgot) with it still connected and made contact with AA1SU 
> in Essex Junction, VT! 20m
> What does that mean? Hello Heathkit -That big resistor in a paint can 
> full of oil made a 2000-mile QSO? (well it was on a hill hihi) Had a 
> good tune and the KPA helped with 3db)
> I am talking to the Elecraft forum. But expect no real results except 
> some sympathy. I bought the second tuner (KAT500) 2-3 yrs ago because 
> the repair service was so slow. I think these are good tuners but 
> maybe they get tired. Troubleshooting Note: When ants are conn to the 
> radio's ATU, the tune is normal...
> I need remote tuners that will tune my multiband dipoles and operate 
> with a remote client.. You guys know how hard it is to troubleshoot 
> intermittents. Plus I bought three all-new coax cables (~100') due to 
> I was eliminating everything, and they were 6yrs old and mostly 
> underground in PVC water pipe. (I am too cheap to buy PVC conduit. hihi)
> //dave
> WB7ELY
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k6dgwnv at gmail.com



-- 
This email has been checked for viruses by AVG antivirus software.
www.avg.com