Bob,
I had a very similar problem with my FT-900 but factory fixed it under
warranty so didn't bother to ask for details. In our conversation
however, they seemed to know about the problem so you might E-mail them.
The FT900 is one of the few units they will do tech-talk with you via
the email setup at their web page.
Re the noise blanker, my FT900 nb works great after changing the value
of R1258 per the Yaesu Technical Bulletin. The Technical Bulletin that
addressed the NB is TB-9521. It changed R1258 from a 10K to a 4.7K.
There are other TB's for the FT-900, but I've only the one for the AM
level. Perhaps others have different TB's on the FT900 they would be
willing to share with us.
Is there a FT900 archieve somewhere?
W7WLL
> -----Original Message-----
> From: Robert Norgard [SMTP:kl7fm@yahoo.com]
> Sent: Saturday, 20 December, 1997 13:05 PM
> To: yaesu@contesting.com
> Subject: [Yaesu] FT-900
>
> Hi all,
>
> Was wondering if anyone has heard of the problem in an FT-900 where,
> during power-up, the rig seems to hang up. The display comes on at
> half-brightness. It's like it does not complete the power-up
> sequence. Pushing the "Power" button turns it off again. Upon trying
> it again, it works fine. Does not happen very often. Have had rig
> about 18 months. Using very stiff 13.8 volt supply.
>
> Next, the noise blanker seems to work excellent for some types of
> noise (extremely short spikes). But not at all for 95 percent of the
> rest of common noise. I heard of a mod for this, but it was for
> earlier units. I checked the schematic on mine, and it shows the
> resistance change. Don't remember what R- it was as I lost that note.
> Is there any other info on this?
>
> Thanks to all, and Merry Christmas.
>
> -- Bob Norgard, KL7FM
>
>
>
>
>
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>
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