[ICOM] 6 Meters

[Jim Frederick]

Jim Frederick W4LF
Your problem is pretty common in the ICOM 746 Pro II although ICOM does not
like to admit it.  It is caused by a feedback path through the open (when
transmitting) contact of the antenna relay which causes the transmitter to
go into oscillation.  You can confirm this by progressively switching in the
6, 12 or 18 dB antenna attenuator until the problem goes away. The antenna
attenuator increases the loss in the feedback path and cures the problem.
If you ship it to ICOM they will change some diodes and get it going, but in
my case it work only a few days.  I suggest the modification at www.mods.dk
that will entirely eliminate the problem.  I did mine and it works fine. If
you cannot find it let me know and I will locate the URL.



www.hobbytech.com
jimfred at tampabay.rr.com 
 
-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of icom-request at mailman.qth.net
Sent: Monday, May 15, 2006 4:09 AM
To: icom at mailman.qth.net
Subject: Icom Digest, Vol 3, Issue 201

Send Icom mailing list submissions to
	icom at mailman.qth.net

To subscribe or unsubscribe via the World Wide Web, visit
	http://mailman.qth.net/mailman/listinfo/icom
or, via email, send a message with subject or body 'help' to
	icom-request at mailman.qth.net

You can reach the person managing the list at
	icom-owner at mailman.qth.net

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Icom digest..."


Today's Topics:

   1. wanted:icom R-9000 [L] FOR R&S EK 895 RX (G0uut at aol.com)
   2. 6 meters (LLOYD CURRY)


----------------------------------------------------------------------

Message: 1
Date: Sun, 14 May 2006 07:35:42 EDT
From: G0uut at aol.com
Subject: [ICOM] wanted:icom R-9000 [L] FOR R&S EK 895 RX
To: icom at mailman.qth.net
Message-ID: <453.3e679e.3198700e at aol.com>
Content-Type: text/plain; charset="US-ASCII"

Hello 
i am looking for a mint clean R-9000 [L] EU VERSION ONLY please 
have to be from Germany or UK box manual etc .
one owner in a good condition.
i  have a nice ROHDE &SCHWARZ EK 895 in mint condition box manual  etc .for 
exchange. please e-mail me direct not on the reflector .
many thanks 
 
all  the best for now 
vy 73 
Elan  
G0uut


------------------------------

Message: 2
Date: Sun, 14 May 2006 22:33:53 -0400
From: "LLOYD CURRY" <na4d at kih.net>
Subject: [ICOM] 6 meters
To: icom at mailman.qth.net
Message-ID: <410-22006511523353390 at kih.net>
Content-Type: text/plain; charset=US-ASCII

 I have a Pro II and 6 meters acts oddly. It shows an swr of 2:1 but it is
flat on my 746 on the same antenna and feed line. Also, when I key the mic,
it transmits in ssb with no input to the mike, as if it were on fm or am.
Any ideas?


LLOYD C. CURRY
Amateur Radio NA4D
na4d at kih.net
"Everybody in this place is crazy except me and you, and I'm not too sure
about you".  Dracula, 1932.






------------------------------

_______________________________________________
Icom mailing list
Icom at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/icom


End of Icom Digest, Vol 3, Issue 201
************************************