[Elecraft] Tuning procedure for KX3, KXPA100 and KAT500?

[Kenneth Christiansen]

Hi again to the group

Jim and Fred both recommended lower power below 10 watts so the KXPA100 does not kick in. I tried it with my K3S when I got home from teaching the radio class and that does look as though it will work well. I hope to get over to his place this week end and get everything working. 

I no longer have enough equipment to look for spurious frequencies but most of the time his KXPA100 would complete and the KAT500 would show very low SWR on the power meter I had along. The SWR on both my meter and the SWR line of the K3S display jump all over the place while the KAT500 relays are operating so I consider that normal.

I am think of making a macro to turn the power down for tuning and if anyone know commands to turn the KX3 tuner off and the PA on in a macro please let me know and I will put it on one of his two PF keys.

Thanks for the help and I will let you know later how we come out.

73

Ken.  W0CZ
w0cz at i29.net

Sent from my iPad

> On Jan 25, 2017, at 1:45 PM, Kenneth Christiansen <w0cz at i29.net> wrote:
> 
> Hi to the group
> 
> I have a friend with the following equipment.
> KX3 with built in tuner.
> KXPA100 with built in tuner.
> KPA500
> KAT500
> 50 ft of LMR400 coax
> R9 vertical.
> The KPA500 is not in the circuit at this time.
> We try to tune the KPA500 using the station set for 20 watts and a hand key.
> The KXPA100 often kicks out. The SWR of the KAT500 changes quite a bit over a tuning cycle and I think that is what is causing the trouble.
> 
> Is anyone else using this combination of equipment and can give us some guide lines on setting up each piece of equipment and a procedure to tune up the KAT500 without hurting the KXPA100?
> 
> Thanks to anyone that can help as this has turned into an expensive problem that has destroyed three pieces of equipment.
> 
> Ken.  W0CZ
> w0cz at i29.net
> 
> Sent from my iPad
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