[Elecraft] KPA3 Fails Calibration

[Bruce James Howes]

Good suggestion Greg!

Tried in manually, same issue.

Think it is a power supply problem, RF may be getting into my power supply, shutting it off.
Manually I get up to 50 watts, then the K3 shuts down, fine on the other bands, so not a a current draw issue.
I'll need to lash up a battery for additional testing, but wager that is it.

Will report back to the group.


Cordially,
Bruce J. Howes






On Jan 23, 2011, at 2:31 PM, Greg wrote:

> Bruce.  Try it manually and see if it works.
> 
> 
> 
> On Sun, Jan 23, 2011 at 11:13 AM, Bruce W1UJR <w1ujr at mac.com> wrote:
> Hello all,
> 
> Just installed the KPA3 100 watt PA into my K3.
> While running through the TX Gain Calibration program in the K3 Utility I received an error.
> 
> Did the 5 watt cal no problem, but when it was doing the 50 MHz calibrate the K3 shut off
> and displayed the error below in the K3 Utility window.
> 
> Thinking this an aberration, I attempted 3 more times, each time the K3 shuts off during
> the 50 MHZ cal period.
> 
> I used my nifty Elecraft W1 power meter to measure RF, on all bands 50+ watts, the 5/6 LEDs on the W1
> were present on all bands, including 50 MHZ, as the K3 Utility runs the RF test on the 50 MHz,
> the K3 shuts off.
> 
> I just upgraded to the new firmware before adding the KPA3, not sure if this is related to that
> or not.
> 
> Suggestions?
> 
> ERROR MESSAGE FROM K3 UTILITY FOLLOWS
> 
>  at 24.930 MHz
> Calibrating at 29.000 MHz
> Calibrating at 52.000 MHz
> StartTune: Unexpected response '' to 'TQ;'. State 139
> StopTune: Unexpected response '' to 'TQ;'. State 77
> RestoreKAT3: Unexpected response '' to 'MP;'. State 224
> RestorePower: Unexpected response '' to 'PC;'. State 87
> 
> 
> 
> Cordially,
> Bruce J. Howes
> 
> 
> 
> 
> 
> 
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