[Elecraft] atu effect on low power out of kxv60 (was xv144 alignment )

[Michael Jensen]

Thank List and  Don x2 and Matt

You hit it right on.

Pressing Display & Tune bypassing the power reduction of the KAT2, did get 
the power up to about 0.57mW from the 0.2. Replacing R6 with a 470 Ohm  on 
the KAT2 did the rest. Now low power controle seems to be ok and the first 
on air test of the XV144 work great. Still a few things to do RF seems to 
sneak in some where, maybe i was not good enough removing the paint. Then a 
issue on the K2, that the freq on XV144 are 1,2 Khz off. Proberly the VCO 
alignmant of K2 or maybe i just need to make an adjustment in the Menu setup 
of the transverter.
The Transverter also seems to drift on TX for the first 5-10 min of use. I 
had a VHF contester to provide me with report. So maybe an oven are needed.

Br.

Michael



----- Original Message ----- 
From: "Matt Osborn" <kc0ukk at msosborn.com>
To: "michael jensen" <mj at the-jensen-dk.net>; <elecraft at mailman.qth.net>
Sent: Sunday, February 26, 2006 9:48 PM
Subject: Re: [Elecraft] atu effect on low power out of kxv60 (was xv144 
alignment )


Michael,

The ATU automatically cuts the power when using tune.  You can prevent
that by setting the ATU menu to CALS or CALP.  Remember to set it back
to AUTO when you're done calibrating the xv144.

On Sun, 26 Feb 2006 18:57:54 +0100, "michael jensen"
<mj at the-jensen-dk.net> wrote:

>When i installed the kxv60  i did not have the atu installed. After a 
>broken diode every thing tested ok.  atu was installed. And tested ok. I 
>did not recheck the kxv60.   when pressing tune to tx while aligning power 
>on xv144 i saw that the power from k2 could only reach something like 0.2 
>mW.  i mentioned it here and got some help.  now i did an other test on 
>kxv60 having taken the lid of k2 every thing worked ok 1mW was send when 
>pressing tune. I put the k2 together  and started the xv144 alignment. Now 
>the problem was back. I have now found that pressing tune with the atu 
>installed result in only 0.2 mW on the low power out.
>removing the atu control cable from the control board the low power out are 
>now 1mW pressing tune.  i do not have a power meter able to measure that 
>level, but i belive having the atu installed makes the low power output to 
>be about 1/5 using tune to tx. Seems that low power out are ok when keying 
>the k2  with the mic and with the atu installed. Only  measurement  i could 
>do was to to check the output from the transverter. I aligned the   xv144 
>using the k2 with out the atu.  so 1 mW displayed on the display giving 20W 
>on the  xv144. Installing the atu in k2 pressing tune give 6w from the 
>xv144. Now keying with mic shouting the south european olaaa drive  xv144 
>to 20w.  any word on this please
>thanks in advance
>OZ1BZJ
>
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