The 30volt device may also be found in the old cable boxes, most of
those I tore up were 30 volt tuning. Also most were positive ground
power supplies.
Quoting arv :
Rob
The BB204 dual varicap is a 30 volt device. Capacitance is 14 pf with a
2.6 voltage to capacitance ratio.
<
>
The BB204B has slightly higher capacitance, 47 pf versus 39 pf, than the
BB204G.
These devices were designed for electronic tuning of FM radio
receivers. That may
give you some idea where to look for surplus and salvage units.
Arv - K7HKL
_._
On 06/30/2013 06:19 PM, iam74@... wrote:
--- In BITX20@... , > "rob_kay14758" wrote: > > > > Just
building the IK3OIL frequency counter/vfo fll, struggling in > the
u.k. to find BB204 double varicap, can anyone suggest an alternative?
Many Thanks > > Rob > > > > Dan's Small Parts has BB104 on sale
at 20/$US8.00. > > Alas, it is only for U.S. customers. > > The
BB104, if you can find it, is a good substitute. It is what I used >
in my IK3OIL fll controller. Also two of the MV1xx varicaps >
back-to-back will work, as suggested elsewhere. > > john > AD5YE > >
[Non-text portions of this message have been removed] Paul Daulton K5WMS beacon WMS
185.302 khz qrss30/slow 24/7 Jacksonville,Ar 72076 em34wu
[Non-text portions of this message have been removed]
