[Elecraft] re: Improvements for the KX1

[Dan Barker]

Adobe is your friend.

I did a search for c181, and found the I.F.OUT you mention.

Searching for I.F.OUT, I find it goes through J6/P6 to the Control board,
and then to the AGC mixer(NE602).

Dan / WG4S / K2 #2456

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net]On Behalf Of Ian Stirling
Sent: Saturday, May 05, 2007 11:01 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] re: Improvements for the KX1


On Saturday 05 May 2007 22:24:11 Joseph Trombino Jr wrote:

> Correct Ian....I didn't count the last two xtals since I believe these two
> xtals are used more for removing I.F. noise than for providing
> selectivity....at least this is what has been mentioned in other receiver
> articles I have read.

Joe,

  The bandwidth of the two is affected by the same filter
bandwidth controlling voltage, V XFIL2, on an MV209 diode.
I wonder how it varies with the bandwidth of the five using
1SV149 diodes.
  I see also that there is a mysterious (to me, I don't see
where it goes) IF out via C181 that is indeed after only the
first five crystals.

73
Ian, G4ICV, AB2GR, K2 #4962
--
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