[Elecraft] atu effect on low power out of kxv60 (was xv144alignment )

Michael Jensen mj at the-jensen-dk.net
Sun Feb 26 16:42:19 EST 2006


Great thanks Don

I will try that.

Br.

Michael
----- Original Message ----- 
From: "Don Brown" <DolfinDon at msn.com>
To: "michael jensen" <mj at the-jensen-dk.net>; <elecraft at mailman.qth.net>
Sent: Sunday, February 26, 2006 7:17 PM
Subject: Re: [Elecraft] atu effect on low power out of kxv60 (was 
xv144alignment )


> Hi
>
> Yes I ran into this about a year ago. The problem is the KAT2 does not 
> have a three state output driver for the RF detector as the KPA100 and 
> KAT100 have and the KAT2 is loading the RF detect line. Changing R6 on the 
> KAT2 to a higher value will solve the problem. I used 470 ohms rather than 
> the 47 ohm resistor normally installed.
>
> Don Brown
>
> KD5NDB
>
>
>
>
> ----- Original Message ----- 
> From: "michael jensen" <mj at the-jensen-dk.net>
> To: <elecraft at mailman.qth.net>
> Sent: Sunday, February 26, 2006 11:57 AM
> Subject: [Elecraft] atu effect on low power out of kxv60 (was 
> xv144alignment )
>
>
> 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
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
> 




More information about the Elecraft mailing list