Video distribution amplifiers are a very good and inexpensive solution to
this problem. Think I paid $5US for my 24 port one (which is actually 3x
dual 1 in 4 out units). I converted one of them from 75 ohm to 50Ω and
didn't bother doing the rest as it made no discernible difference for
timing
The 9478 is an excellent unit but slightly unconventional. It does not
discipline the internal OXCO to the external standard when present. It has a
10MHz PLL VFO tat is locked to either the internal OCXO or external refernce
depeding what is available. If the external reference is present te
It seems to be a very good price.
There is a Racal Dana 9480 fully equipped with 40 outputs listed on eBay
Germany for EUR 795.
Nice to have but I don't need 40 outputs.
vy 73 Heinz DH2FA, KM5VT
Von meinem iPhone gesendet
> Am 04.11.2018 um 15:05 schrieb Dr. David Kirkby
> :
>
> On Sun, 4 Nov
On Sun, 4 Nov 2018, 11:51 David C. Partridge FWIW it is trivial to modify these video distribution amps for 50 ohm
> output - you just need to change the output resistors form 75 ohm to 50 ohm
> on the board after the op-amp.
>
> David
>
Three was a discussion about the particular video amplifier
Hi
One would *guess* that the PLL bandwidth in the 9578 is wider than what you see
in a typical
GPSDO. As long as they don’t both line up at the same point, noise and phase
peaking should
not be a big deal. Depending on how clean your GPSDO is, the 9578 might clean
things up a bit.
For
...@lists.febo.com] On Behalf Of Dr.
David Kirkby
Sent: 04 November 2018 10:44
To: time-nuts@lists.febo.com
Subject: [time-nuts] Racal Dana 9478 frequency distribution system with option
04B high stability oven (5x10^-10/day aging rate).
I want a distribution amplifier to distribute 10 MHz from
