A quick check on line looks like it was designed for/used in TV tuners. Worst
case you might be able to find one to "re-purpose" in a TV set of that era?
73, Al
On Mon November 28 2016 5:38:57 pm Dukes HiFi wrote:
> I was able to take a macro photo of this transistor.
>
> In Photoshop I was able to read the number as BF988.
>
> I bought one on eBay, hopefully it is not an empty.
>
> Gary
>
> > On Nov 28, 2016, at 5:07 PM, Dukes HiFi <dukeshifi@comcast.net> wrote:
> >
> > The later Omni 6+ uses a 4 pin dual gate MOSFET for the feedback loop IF.
> >
> > It is a black round device as opposed to the earlier 3SK301. It does not
> > use the ferrite bead on the one gate.
> >
> > Does anyone know the number for this device or a suitable replacement?
> >
> > I can’t read the number on the one I am repairing but it begins with
> > “BT”.
> >
> > Gary
> >
> > W0DVN
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>
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