Hello all I have the K2 with the KPA100/KAT100 in an EC2 case and running that configuration. I get full power out of the unit on all bands but anything above the 10 watts is automatic 100 watts. there is now in between The display does show any setting that I want. for example I can dial up 50 watts. but it will be 100 watts or 30 watts I still have 100 watts as I scale up throught the range of the power control. Any suggestions where I should start. I did check my cables and all seems to be ok I have it running through my logging program ok. So frequency and mode control are working ok. Thanks David KR4OW _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. http://clk.atdmt.com/GBL/go/196390707/direct/01/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
David,
The wattmeter in the KPA100 is not signaling the output power back to the base K2 microprocessor. The most common cause is damaged diodes in the wattmeter. To assure yourself that this is the case, remove the KPA100 and run only the base K2 - if the base K2 can control power properly, the problem is in the KPA100. Check diodes D16 and D17 in the KPA100, and while you are at it, you may as well get 4 of the 2N5711 diodes and replace the 2 in the KAT100 as well. Then for the future, make resolve to disconnect the antennas when not in use. The most probable cause of failure is a surge from lightning or even rain/snow/wind static that caused the diodes to be damaged. There are a few other possible causes of that kind of failure, but check the diodes first, and if the diodes are good, ask again and we can guide you to the real failure spot. 73, Don W3FPR DAVID Nachbaur wrote: > Hello all I have the K2 with the KPA100/KAT100 in an EC2 case and running that configuration. I get full power out of the unit on all bands but anything above the 10 watts is automatic 100 watts. there is now in between The display does show any setting that I want. for example I can dial up 50 watts. but it will be 100 watts or 30 watts I still have 100 watts as I scale up throught the range of the power control. Any suggestions where I should start. I did check my cables and all seems to be ok I have it running through my logging program ok. So frequency and mode control are working ok. > > Thanks > > David KR4OW > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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