Ken,
Gary, W7TEA, kindly sent me a photo of the underside of his early Omni VI+
which has the screening in place. There are no holes in my "inner panel" which
would allow screens to be attached, so this must have been a mod on later Omni
VIs / Omni VI+s.
I have put temporary screens in place but they made no difference!
One final symptom on the "birdies" which totally mystifies me: If I adjust the
PBT control until I hear a birdie, then press the NAR button, the pitch of the
birdie changes by a few hundred Hz; pressing the NAR button again returns it to
its original pitch. I can't see anything on the schematics that would suggest
that the NAR button affects any of the oscillators!
I think I'm just going to have to live with it.
73,
Steve
----- Original Message -----
From: Ken Brown
To: Discussion of Ten-Tec Equipment
Sent: Monday, November 27, 2006 2:01 AM
Subject: [TenTec] Shields in Omni VI
Hi Steve,
The photos in the manual for my Omni VI do not show any of the shielding
in place. I was wondering if I was confused and that the cover plates I
remembered are in my Paragon and not in the Omni VI. When I read the
manual for the Omni VI in the section describing how to install the
optional filters, it clearly states that you need to "Remove the panel
covering the PBT board" or "Remove the panel covering the 9 MHz filter
board." So, even without opening up my Omni VI, I think I can say with a
fair degree of certainty, "Yes there should be cover plates over the 9
MHz and 6.3 MHz optional filter access holes." I will be interested to
hear whether adding shielding plates over those holes makes the birdie
go away.
Ken N6KB
Steve Hunt wrote:
Ken,
I only just spotted your question about shield covers over the optional
filter slots.
There aren't any - just holes! Should there be? I don't recall seeing
any obvious fixing holes for covers or I might have been suspicious.
73,
Steve G3TXQ
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|