Re: I tried Support without a word in return -- so I'll try this

Posted by Rick Beatty on Aug 04, 2011; 12:14am
URL: http://elecraft.85.s1.nabble.com/Re-I-tried-Support-without-a-word-in-return-so-I-ll-try-this-tp6650837.html

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
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