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Re: [Yaesu] Fw: [CTDXCC] Antenna Tuner Problem??

To: N5IET Bob <rtnmi@sbcglobal.net>
Subject: Re: [Yaesu] Fw: [CTDXCC] Antenna Tuner Problem??
From: Gary Smith <wa6fgi@sbcglobal.net>
Date: Mon, 26 Sep 2005 08:32:18 -0700
List-post: <mailto:yaesu@contesting.com>
What does Yaesu have to say about this?  maybe a mod kit or fix?
73
Gary...wa6fgi

N5IET Bob wrote:
Thanks John:

I am on the 920 group, but they really have not been a
whole lot of help with this issue. It seems they may not
know much, I was hoping one of you guys had experienced it
before. I can't find a pdf service manual anywhere either.

Oh well onward and upward.

 73 fer nw,
Bob N5IET

(old calls KE5CTY - WB5ZQU - WY5L)
10X# 37210, FP#-1141, SMIRK#-5177
http://www.qsl.net/ke5cty/
Code may be taking a back seat for now,
but the pioneering spirit that put the code
there in the first place is out front of it all.



-----Original Message-----
From: yaesu-bounces@contesting.com [mailto:yaesu-bounces@contesting.com] On Behalf Of John

Wagner


Sent: Monday, September 26, 2005 7:39 AM
To: 'Robert Pack (NX5M)'; Yaesu@contesting.com
Subject: Re: [Yaesu] Fw: [CTDXCC] Antenna Tuner

Problem??



I would suggest going to the Yahoo Groups and then the

920


group. There has been a lot of discussion there about

the


tuner needing to be reset and the low power issue. I'm

sorry


I don't have al link. It's on my home PC. I will post it


tomorrow if no one else does.

Good Luck

John

-----Original Message-----
From: yaesu-bounces@contesting.com [mailto:yaesu-bounces@contesting.com] On Behalf Of

Robert Pack (NX5M)


Sent: Saturday, September 24, 2005 11:27 PM
To: Yaesu@contesting.com
Subject: [Yaesu] Fw: [CTDXCC] Antenna Tuner Problem??


Perhaps someone on this reflector can help this fellow

out.



----- Original Message ----- From: "N5IET Bob" <rtnmi@sbcglobal.net>
To: "Central Texas DX and Contest Club" <ctdxcc@kkn.net>
Sent: Saturday, September 24, 2005 10:02 PM
Subject: [CTDXCC] Antenna Tuner Problem??



I just bought a new (used) FT-920 S/N 980108C and it receives beautifully but seems my SWR is better without the Auto tuner inline.

I wish there was a way to make it forget any memorized
stuff that the previous owner might have put into it for
his specific setup. I have already checked the menus as
you will see later on and have soft erased and written
over the Q MEMS AND MEMORY BANK with new data.

At times with the tuner inline it acts like it is having

a


problem tuning the antenna system to resonance. But

either


way (with or without an indicated low SWR) I have low

power


output on all bands.

For some reason it tells me HIGH SWR but will eventually
tune the frequency if I play with it enough. Then at

times


it seems to tune it and then JUMPS all the way to the
right.

I just had this same Antenna system hooked up to an

IC-728


with the AT-160 AutoTuner and it would bring it into 1:1
almost immediately and full power output with no over
heating at 100% duty cycle on PSK.

With the new FT-920 setup it takes a while for it to

bring


it into 1:1 if it even does.

But whether it does or not the power output is still

low.


MAX POWER OUTPUT I have out is 75W on 40 and 80. On 20

it


is about 50W and above 20 it deteriorates to 5W-10W. Do
not have an antenna for 6 Meters so I have not checked

it


yet.

I have checked the menu and submenu and all is as

default.


Here are the settings:
F01  1.15     CPU VERSION
F02  1.29     DSP VERSION
FO3  Fin1.26  Tuner Version
FO4  OFF      TUNER CLEAR
FO5  OFF      TUBER PLATE ADJUSTMENT
FO6  OFF      TUNER WRITE TO TUNERS MEMORY
FO7  OFF      TUNER MOVEMENT TO CENTER

S/N 980108C

Any help would be appreciated


73 fer nw, Bob N5IET

(old calls KE5CTY - WB5ZQU - WY5L)
10X# 37210, FP#-1141, SMIRK#-5177
http://www.qsl.net/ke5cty/
Code may be taking a back seat for now,
but the pioneering spirit that put the code
there in the first place is out front of it all.


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