[time-nuts] Distribution amp - Use a video amp unit ?
dgminala at mediacombb.net
Sun Mar 25 20:02:42 UTC 2012
> I need a distribution amp for my Tbolt , with 6..8+ outputs
> The TAPR-1 is NA , and the successor status is ???.
> I need it for distributing 10Mhz ref-clock to Counters
> (HP,Racal,Phillips), a Rigol Sig-gen & maybe Oscilloscopes etc.
> It's for "better than ocxo/hobby use" , and not Tnut (ps accuracy).
> I have seen suggestions for using a video distributiution unit.
> But in my part of the world (EU) , there isn't a lot on "eby".
> I have seen some RGB amps , and was wondering if i could use those ?
> Could i use a 1:6 RGB unit for : Tbolt on R , FEI-5680A on G - and
> ?? on
> B ?
> I'm not experienced (yet) in the analog domain.
> If i go (simple diy) Would this one work (also wo. the trafo's) ?
> I do have some trafo's on an old 10Mhz 8-chan Hub , that i might be
> to salvage if needed.
> Thanx for any input/hints
> CFo - T-Nut beginner Denmark.
I have a couple Extron ADA-3-80 RGB video distribution amps that I use for
10 MHz distribution, and they work well for me. I send my 10MHz standard to
a number of bench instruments, which seem to be quite happy with it. They
are 75 ohm units (for video); you can use them as-is or change the source
resistors inside the unit to 50 ohms if you wish. Gain is switchable
between 1:1 and 1:0.7. The gain is somewhat adjustable.internally. Noise
is pretty low.
They come up on ebay fairly frequently, and at reasonable prices. Didier
(KO4BB) has a page describing his experience with the Extron unit at
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