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RE: [Yaesu] FT920 TX Power problem?

To: Charley Schwartz <charley@net1plus.com>
Subject: RE: [Yaesu] FT920 TX Power problem?
From: Leland Vandervort <g0szp@g0szp.net>
Date: Fri, 11 Jun 2004 14:42:32 +0100
List-post: <mailto:yaesu@contesting.com>

Hi Charley,

I've already checked this (as mentioned in the previous mail "despite the menu settings"). They're both set to 100 Watts, but the power output only between 5 and 10 watts. (including into a dummy load). If I move the antenna over to the IC706 it works fine at full power. Spoke to Yaesu, and the chap in their tech support seemed almost as dumbfounded as I am. He said it seems as if the final drive is gone, but it lacks the other additional "side effects" (reflected power, inability to match, etc.) so he too was perplexed :( The only other thing he mentioned is that it's possible that the rig is picking up input voltage in the ALC circuit causing it to drop its power output. Thus far, nothing unusual found though...


At 13:23 11/06/2004, you wrote:

Hi Leland:

Menu item U-49  (A-MR-PO) Sets the max power output for Antenna-A (100/50/10

Menu item U-50  (B-MR-PO) Sets the max power output for Antenna-A (100/50/10

If this was set to 10 the max power you would get with the carrier level
control max would be 10 watts.

73 de Charley W1TE

>===== Original Message From Leland Vandervort <g0szp@g0szp.net> =====
>Hi All,
>I have a peculiar problem with my FT920 in that on all bands, despite the
>menu settings, the max power output is only between 5 and 10 watts (10 on
>10M, 5 or so on the others).  Is this a known issue, and is there a
>resolution to it?
>Antenna matched very well, and of course the RF PWR control is all the way
>Any ideas?
>g0szp / aa2qx
>Yaesu mailing list

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