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<DIV><BR> </DIV>
<DIV> </DIV>
<DIV>Hi Perry</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Could you give a little more information:</DIV>
<DIV> </DIV>
<DIV>Do these pops occur when you're in vox, QSK and are you using the
built-in keyer, external keyer or hand key??</DIV>
<DIV> </DIV>
<DIV>It may not seem to be critical, but here's an example from <A
href="http://www.va3cr.net">www.va3cr.net</A> that shows how critical it is
to properly assess the problem...</DIV>
<DIV> </DIV>
<DIV><B><FONT size=4>Clicks and Thumps in Headphones on Mark V (W3ULS)</FONT>
</B></DIV>
<DIV><STRONG><FONT color=#ff0000></FONT></STRONG> </DIV>
<DIV><STRONG><FONT color=#ff0000>Problem:</FONT></STRONG> Since taking
possession of a Mark V last year, I have been very disappointed in the
clicks and thumps I was hearing while transmitting CW. No amount of tweaking
of menu settings as discussed in previous postings seemed to help.</DIV>
<DIV> </DIV>
<DIV><STRONG><FONT color=#009900>Solution:</FONT></STRONG> On Saturday I
pulled the Mark V for first echelon maintenance and in vacuuming the rig in
some good light I noticed that the tiny blue slide switch recessed in the
back panel that controls the linear amplifier relay was "on." The manual
states that the switch comes disabled "to avoid the clicking sound when the
transceiver is used alone. . ." Oh, my. Apparently the previous owner (I
bought the Mark V from a ham in Florida) had used a non-QSK linear. It had
never occurred to me to check the relay switch since I run the Mark V
barefoot. So on Saturday, I switched it off.</DIV>
<DIV> </DIV>
<DIV>Lo and behold, once back on the air, I discovered the clicks and thumps
in my headphones were gone. Using Hi-Fi phones does give me a vestigial
"thump," but with a set of phones with less bass response there now is
nothing but a pure CW tone to hear. What a difference!</DIV>
<DIV> </DIV>
<DIV>With regard to the "MONITOR" button, the manual says the monitor
circuit is always on when sending CW, so I guess the only advantage of
pressing the button is to be able to adjust the sidetone volume via the
monitor's volume control. I don't use it.</DIV>
<DIV> </DIV>
<DIV>Bottom line: anyone hearing objectionable clicks and thumps in his/her
headphones with a Mark V needs to make sure the linear amp relay is switched
off. Don't do as I did and assume it's off.</DIV>
<DIV>73,<BR>John, W3ULS</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>HOPE THAT MAY HELP IN PINNING DOWN THE PROBLEM!!!</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Best regards,</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Dean - 8P6SH</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR>-----Original Message-----<BR>From: PERRY BAKER
<thkpqb@yahoo.com><BR>To: INRAD FILTER <list@inrad.net><BR>Date:
Mon, 16 Jan 2006 12:37:37 -0800 (PST)<BR>Subject: [INRAD] POP in rx on cw<BR>
<BR>> Hello <BR>> <BR>> I have an FT1000mp field <BR>> I
have the inrad 703c filter in narl spot along<BR>> with the stock
500 filter in the 8.2 if <BR>> <BR>> when transmitting cw
and goes back to rx I<BR>> get a pot in the receiver.<BR>>
If I take the 703c filter out and put in any<BR>> other filters (
I have a 714c and the stock <BR>> collins 500 I dont get this
to happen <BR>> <BR>> and If I put the 703c
in the subreceiver <BR>> it seems ok also<BR>> <BR>>
of if I Put it in the 250 hz slot it seems ok<BR>> <BR>
> <BR>> <BR>> Only when its in the Nar1 slot do I get a
pop <BR>> or thump when the rx comes back on <BR>> <BR>> anyone
have any Ideas ?<BR>> <BR>> Perry WA8THK<BR>> <BR>> <BR>> <BR>
> Perry WA8THK <BR>> Gaines Michigan<BR>> <BR>>
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