[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
>
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