[Elecraft] Fwd: K1 Transmitter problem

[Don Wilhelm]

Denny,

Align them first on receive for the strongest signal, and be certain you 
are receiving a real signal on the band being aligned - if you do not 
have a signal generator, use another transmitter running into a dummy 
load and use a wire placed near the dummy load as an antenna for the K1. 
  Do the 15 (or 17) meter band first, and then do 20 meters.  Also, 
align 30 meters before 40 meters.
Start with the trimmers with the slots parallel to the long side of the 
board - the final adjustment should be no more than 20 degrees away from 
that center position - if it is more, check the toroids for the correct 
number of turns.

Of the 4 trimmers for each band, there is no particular order - just 
adjust them for a peak.
If you have an RF Probe or 'scope with a 10X probe, you can align the 
pre-mixer bandpass (the two trimmers on the left edge) initially by 
looking for the maximum RF voltage on P1 pin 6 during receive, but do a 
final "touch up" during TX at 1.5 or 2 watts.

73,
Don W3FPR

On 3/1/2012 9:17 AM, Dennis Rayfield wrote:
> Don,
>
> Thanks for the help, I'll do them tonight when I get home.  Given that there are 4 trimmers per band, is there any specific sequence that I follow to adjust them?
>
> 73,
>
> Denny - KI3F
>
>
>
> Begin forwarded message:
>
>> From: Don Wilhelm<w3fpr at embarqmail.com>
>> Date: March 1, 2012 8:36:49 AM EST
>> To: Dennis Rayfield<ki3fdar at gmail.com>
>> Cc: Elecraft email list<elecraft at mailman.qth.net>
>> Subject: Re: [Elecraft] K1 Transmitter problem
>> Reply-To: don at w3fpr.com
>>
>> Denny,
>>
>> Adjust the trimmers for maximum power.  If the power goes above 5 watts, bring it down by repeatably tapping the WPM- button or exit TUNE and set the OUT menu to a lower value.
>>
>> Remember that you are adjusting for a peak - and if the power output goes too high, you will not be able to see the peak of the tuning because the transistors have reached their peak capability.  That is why you need to keep the power low while tuning.
>>
>> 73,
>> Don W3FPR
>>
>> On 3/1/2012 6:47 AM, Dennis Rayfield wrote:
>>> OK, I assumed that tweaking the trimmers on the filter board would just move the power out small bits.  such as if you have the power out set at P2.0, the trimmers would tune between P1.7 and maybe P2.3.  I want in and starting adjusting them, and I get power out now in the right ranges, and fact I can trim them for much higher than what I set the power for.  I'll go back and read the ALC stuff tonight, and make sure I understand it.
>>>
>>> Should I adjust the trimmers for max output, or to what I set the power out to be with the menu?
>>>
>>>