[Elecraft] EXTREME signals

[Indy]

It is so difficult to use language in such a way as to be absolutely =
clear to everyone.  let me try agn.

Wayne's back-to-back diode mod across the IF has absolutely no negative =
impact upon the radio.  The diodes do not conduct until an extremely =
strong signal is present.  When such is present, the diodes bleed off =
the excess signal to ground.

the result:  Under normal receiving, one will not know the mod has been =
done.  In the extraordinary case that a nearby station, for example, QRP =
to the field, four guys have their QRP radios set up near each other, if =
you tune across one, that signal will sound no different than any other =
S-9 signal.  However, when you tune off of that nearby signal, the AGC =
will be pumping with the keying of that extremely strong nearby signal.

In my test, I was keying a 100 watt station a few INCHES away from the =
K2.  I could tune across that signal with impunity, but if I was ten khz =
away, the K2 would pump with the keying of that 100 watt adjacent =
station making copy of a weak signal impossible, though I could copy a =
strong signal that would impact the AGC anyway.

However, if the MP were at five watts, a few khz away there was no =
longer any pumping ;-)

If you take your radio to field day and accidently tune across one of =
the other stations there, you would be glad to have the mod installed =
;-)

73,

Fred

--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---