[Yaesu] Rehabilitating An FT-901DM

Tue, 6 May 2003 19:15:45 -0400

Greg-

Service manual instructions:

Tune the receiver to 14.2 MHz in the USB mode and set the WIDTH control to
the 12 o'clock position.  Set the RF GAIN control fully clock-wise.

Change the MODE switch from USB to LSB.  The receiver background noise at
the speaker should not change pitch.  If there is any difference, adjust
VR2301 located adjacent to the mode switch below the chassis until the noise
is of the same pitch when switching between USB and LSB.

Hope this helps.

Steve W4IMF

----- Original Message ----- 
From: "Greg Queen" <[email protected]>
To: <[email protected]>
Sent: Monday, May 05, 2003 12:44 PM
Subject: [Yaesu] Rehabilitating An FT-901DM

>
> The second issue I have is with the "width" control.  As I understand it,
> this control moves one of the IF frequencies around causing the IF
bandwidth
> to narrow.  The manual indicates that with the width control in the center
> (detent) position you would have normal bandwidth.  Rotating the control
> either left or right would narrow the bandwidth on either the high or low
> frequency side.  At present, I have to run with the control fully
clockwise
> to effect reasonable reception.  Is this normal?  If not, does anyone have
> any ideas of what may be causing the abnormal behavior?
>
> Thanks in advance for your efforts.
>
> Greg Queen
> [email protected]
>
>
> Moderator: Ray Brown, KB�STN
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