[time-nuts] Rubidium Info
kirbybq at bellsouth.net
Fri Dec 31 20:42:49 EST 2004
Greetings and Happy New Year !
I bought an rubidium assembly off of E-bay, it was sold by a user of the
name of testege. Its a 10 Mhz Efratom FRS-C, with TTL output, and it
was enclosed in a steel box about 5x5x3 inches. It had two additional
boards attached to the rubidium, the first was a socket/plug interface
to the rubidium, and the second board has a db-25 and 3 each TNC
connectors. The user selling it, thought it was a distribution amp.
I believe its either a synthesizer or discipline circuit. The board has
an assembly number of 5576ASSY101720-002. There are two filters on the
board, one is 15 Mhz, the other is not marked other than on the PC
board. A +15 and +5 volt TO220 regulators, a 74HC4538, CD4060, ILD766,
a PIC marked 101949-001 9500522 by white sticker - the chip is a Atera
EP610C-25T, several berg jumpers, etc.
Does anybody have any info on the assembly board ? The seller has
another unit up for sell, info at
FYI, I picked mine up for $210 - he charges $25 for S&H. I removed the
rubidium from the unit and ran some basic test and it appears to be
Brian Kirby - N4FMN
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