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Re: [TenTec] Omni VII first impressions....odd things i.e. SWRvalues

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Omni VII first impressions....odd things i.e. SWRvalues
From: "N4NT" <mike_n4nt@embarqmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 22 Dec 2007 18:59:26 -0500
List-post: <mailto:tentec@contesting.com>
I wouldn't think the Bird could show a bad cable between itself and the rig. In fact, what you report is just what I'd expect if that cable is bad.

Mike N4NT

----- Original Message ----- From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, December 22, 2007 5:53 PM
Subject: Re: [TenTec] Omni VII first impressions....odd things i.e. SWRvalues


Mike:


OK you convinced me.  Yes, give Paul at Tentec a call maybe on Monday.
Don't know if they are working Christmas Eve however.  May have to wait
after Christmas.

One thing you didn't cover.  What's the output power as indicated on the
Bird?  I ask, wondering if the SWR value seen by the internal bridge is
causing any power foldback. If it is not, then enjoy the operation and feel
comfortable that it is only an indication issue, thus not affecting
operation.

73
Merry Christmas

Bob, K4TAX
----- Original Message ----- From: "Mike Bryce" <prosolar@sssnet.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Friday, December 21, 2007 9:21 PM
Subject: Re: [TenTec] Omni VII first impressions....odd things i.e.
SWRvalues


bob and all..

Here's the set up once again

Radio running from a 14.0 volt supply
one coax cable from the Omni VII to a bird wattmeter with correct slug.
a second coax cable to a 50 Ohm dummy load

Dummy load is within specifications

Press "tune"

Omni VII goes into low transmit

SWR meter shows 9:9 to 1

Bird wattmeter shows NO reflected power (ok, the meter's needle moves
upward the width of the needle)


Press "tune"

Omni VII goes into low transmit

SWR meter shows 4.5 to 1

Bird wattmeter shows NO reflected power

Press "Tune"

Omni VII shows 2:1 to 1

Bird wattmeter shows NO reflected power

Press "Tune"
Omni VII shows 9.9 to 1

Bird wattmeter shows NO reflected power

Press "tune"

Omni VII shows 1.1 to 1

Bird wattmeter shows NO reflected power


same problem with either antenna port
NO internal antenna tuner installed

Same problem on all bands

I could keep going but I hope you see what I am talking about

The problem is NOT a coax connector or bad cable, the bird would have
shown that.

I'll have to give TT a call after the holidays..


Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/



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