Hi To the group -- this is my second time around, having 2 K2's -- as I build the second one I have run into an issue that some of you might have seen, or heard of.
All of the checks and tests required up to and including phase two ( receiver checkout) are nominal -- however, I find that the signal they ask for you to check, at around 7.0Mhz is not there -- and signals off of an antenna are also weak. I confirmed this by injecting a signal into the antenna port and determined that the receiver is about a -70 to -75 db and not the normal -100. However, here is the kicker -- if I jumper from w2 to w3 the sensitivity comes to normal and the 7.0Mhz signal is good and solid as well as signals from the antenna. What I want to know is what to do to fix it. This little test has me thinking that that crystal filter is bad. Comments please -- Rick NU7Z ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
