[Elecraft] KAT500 Fault

Dick Dievendorff dick at elecraft.com
Fri Oct 2 02:10:12 EDT 2015


Sounds like the amplifier key line is not connected thru the KAT500.  The ATU must be able to break the amp key line during tuning and all other ATU relay transitions. 

Dick, K6KR

Sent from my iPhone

> On Oct 2, 2015, at 04:47, dave_w0ru <dkent53 at gmail.com> wrote:
> 
> Fred,
> I am now trying the KAT500 output going to a dummy load. When the K3 is set
> at about 22 watts out, the KPA500 shows 440 Watts out. When I use the Tune
> feature on the K3 with Manual Tune feature on the KAT500, there is no fault.
> However, when I send with the K3 keyer and with Manual Tune on the KAT500, 
> I get a fault on the KAT500. Using the KAT500 utility, I find Fault Code 03
> - VFWD above relay hotswitch limit - VFWD 1551 VRFL 0 SWR 1.00 SWRB 1.00. Is
> the moral of the story to use the K3 Tune control, not the K3 keyer?
> 
> 73 de Dave w0ru
> 
> 
> 
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