[ICOM] Icom 756 on 60 meters

[JohnD]

John,

My 756 did not operate very well when mod'd for TX on 60M. I found that the
power was down substantially on and around the 60M channels. The power out
was down from 100W to 35W-50W depending on what channel was used. In
addition to the power degradation, the ALC and 12VDC current were also
affected adversely. The ALC went to zero and the input current droped to
about 13 amps.  It am guessing that the 80M filter, which I think the 756
uses at these frequencies, does not work well in this frequency range.  I
will send you a spreadsheet of the detailed data I took from my 756 in a
separate email if you like, but in short, the power starts degrading at
about 4.4 MHz and finally takes a steep dive at 5.1 MHz. It gets down to
about 2 watts at just below 6 MHz. Then, when the radio switches from the
80M filter to the 40M filter at 6 MHz, the power comes back up to 100W.

That said, I did make a single QSO on 60M and the other station gave me
decent audio and signal reports.

John DeRuiter, WM7A
http://members.cox.net/wm7a/

-----Original Message-----
From: icom-bounces at mailman.qth.net
[mailto:icom-bounces at mailman.qth.net]On Behalf Of John Geiger
Sent: Tuesday, October 12, 2004 1:48 PM
To: icom at mailman.qth.net; icomradio at yahoogroups.com
Subject: [ICOM] Icom 756 on 60 meters


Has anyone tried using an Icom 756 on 60 meters, and
what were the results.  It seems that I remember there
was some problems with running the 746 or 746 PRO on
60 meters.  Does the 756 have the same problems.  This
is the 756AMATEUR not the PRO models.

73s John NE0P



=====
John Geiger
Associate Professor of Psychology, Cameron University

Ham Call NE0P, active 160-23cm
Radios: Icom 756(HF/6), Icom 706 (HF, 6, 2), Standard C156A (2 meters)
Antennas: 2 element Mini Quad, Cushcraft A14810S, Homebrew G5RV

3 VUCCs on 50mhz: from EN41, EN51, EM04, #1014, #1015, #1290
2 meter VUCC #615
Satellite VUCC #129
County Hunters award (500): #3301, all 6 meters



__________________________________
Do you Yahoo!?
Read only the mail you want - Yahoo! Mail SpamGuard.
http://promotions.yahoo.com/new_mail
----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/