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KPA100 low output

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Tom Zeltwanger

KPA100 low output

Just finishing KPA100 assembly. All looks good up to the high power transmit
tests. I am setting the power control to 100 watts. Power indicator when I
transmit says I only have 21-25 watts out on all bands.

I am looking over the workmanship, guessing that maybe the final stage is not
working at all. Any help greatly appreciated.

73,

Tom KG3V

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Don Wilhelm-3

RE: KPA100 low output

Tom,

How are you initiating transmit? If you are pressing the TUNE button, the
power level will be about 20 watts, you must press TUNE and DISPLAY to
transmit at the full requested output.

73,
Don W3FPR

> -----Original Message-----

> Just finishing KPA100 assembly. All looks good up to the high
> power transmit
> tests. I am setting the power control to 100 watts. Power indicator when I
> transmit says I only have 21-25 watts out on all bands.
>
> I am looking over the workmanship, guessing that maybe the final
> stage is not
> working at all. Any help greatly appreciated.
>
> 73,
>
> Tom KG3V
>
>

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 3/10/2007
2:25 PM

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Tom Zeltwanger

RE: KPA100 low output

Don,

Thanks for the quick response. I hope it is something this simple (stupid)! I
will go back and try again. I was reading the power and the SWR, so I thought
that should have been transmitting full power.

I did take the KPA100 apart and checked soldering, checked for possible shorts,
etc. and found nothing but RFC1 soldering not looking great - will check that
connection before I reassemble the unit.

73,

Tom KG3V

Quoting Don Wilhelm <[hidden email]>:

> Tom,
>
> How are you initiating transmit? If you are pressing the TUNE button, the
> power level will be about 20 watts, you must press TUNE and DISPLAY to
> transmit at the full requested output.
>
> 73,
> Don W3FPR
>
> > -----Original Message-----
>
> > Just finishing KPA100 assembly. All looks good up to the high
> > power transmit
> > tests. I am setting the power control to 100 watts. Power indicator when I
> > transmit says I only have 21-25 watts out on all bands.
> >
> > I am looking over the workmanship, guessing that maybe the final
> > stage is not
> > working at all. Any help greatly appreciated.
> >
> > 73,
> >
> > Tom KG3V
> >
> >
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 3/10/2007
> 2:25 PM
>
>

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Tom Zeltwanger

RE: KPA100 low output

In reply to this post by Don Wilhelm-3

Don,

This is hilarious. When I use the proper TUNE sequence, it seems to work fine. I
guess if things don't look right, you should really re-read the instructions (or
don't work on your rig in the morning).

Guess I may be ready to go for the VA QSO party next week after all.

Back to final assembly and testing.

Thanks,

Tom KG3V

Quoting Don Wilhelm <[hidden email]>: