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" <[EMAIL PROTECTED]> To: <elecraft@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@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 _______________________________________________ Elecraft mailing list Post to: Elecraft@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
