[Elecraft] K3 :: NO RF out of HPA

[Milt, N5IA]

Ian,

Thanks for the reply.

Yes, the PA is turned on in CONFIG.

Another clue is when TUNE is invoked, the output power does not track the 
power setting.  For example, with the power out set to 12 Watts, the actual 
power out in the TUNE position is 3.2 Watts.

Then, if I turn the power set upward at the 13 Watt level, the relay cuts in 
the PA.  The power out indicator immediately goes to the 13 Watt indication 
and will follow up to the 100 Watt level.  But during this excursion there 
is actually NO Power Out.

No one else replied with any ideas, so I suppose this is a brand new 
situation.  At this point I will open the radio up and see if I can find any 
loose connections to the PA.

Milt, N5IA


----- Original Message ----- 
From: "Iain MacDonnell - N6ML" <ar at dseven.org>
To: "Milt, N5IA" <n5ia at zia-connection.com>
Cc: <elecraft at mailman.qth.net>
Sent: Thursday, June 04, 2009 10:00 PM
Subject: Re: [Elecraft] K3 :: NO RF out of HPA

>
>
> Milt, N5IA wrote:
>> My K-3 has been working FB since it was birthed from a cardboard box.
>>
>> However, when recently moving at a few miles from its normal crib to a
>> portable contest location a problem showed up.
>>
>> At the contest site my baby will not make power once the power set 
>> control
>> is advanced to the level where the PA is supposed to kick in.  This is 
>> all
>> bands and all modes.  Everything appears normal without the PA selected.
>>
>> I have tried the common external things like resetting, etc., to no 
>> avail.
>> There are no error messages and I find no clues in the troubleshooting
>> section of the manual.
>>
>> Before digging into it and looking for what I believe might be a physical
>> thing (loose connection/connector, etc.) does anyone have any history of
>> this problem occurring previously.  Why reinvent the wheel?
>>
>> Any ideas anyone?
>
> Did you check that CONFIG:KPA3 is "nor" ?
>
>     ~Iain / N6ML