Having just delt with a four band filter that acted that way, and having missed the previous discussion here, may I simply point out, that soldering is critical, especially around the toroids. I used three different coated wires, and found they were all tempermental.Careful pre tinning is needed. Reflowing helped with my intermittants too. Unfortunately, the board bounced. It is on the way back, and will require closer inspection. (I plan to use at a minimum 30X glass)Good luck,
--... ...-- Dale - WC7S in Wy > Date: Tue, 5 Jun 2012 17:37:41 -0700 > From: ruteus...@gmail.com > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] KBX30/80 Module > > Using a different RF probe and meter, I re read the output of my KX1 using a > 12 volt battery as a source: > 3M 12.02 volts > 7M 10.17volts > 10M 10.3 volts > 14M10.2 volts > > I think this is a close as I am going to get. I have tried moving the coils > around the L2 torioid, but the figures do not get better than this. Short > of a complete rebuild on that board, not sure what else to look at. BTW, I > did get the dummy load you recommended. It has a much better response > across the bands. > Thanks > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/KBX30-80-Module-tp7556858p7557187.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
