Re: [time-nuts] HP8568B firware eproms anyone ?

2006-10-20 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], John Miles writes: Actually, since each EPROM is now 4x bigger than necessary, couldn't you do all this with just one chip? The circuit must be decoding a couple of high-order address lines to drive the chip-select pins of the other three EPROMs, so you'd just tie

Re: [time-nuts] HP8568B firware eproms anyone ?

2006-10-20 Thread Robert Atkinson
Hi John, After much experience swapping ROM's and EPROM's in commercial equipment, I've found that you can never be sure of using a new part. The address and control timing on many designs is not all it should be, often the system is only working due to marginal (or even totally incorrect) timing.

[time-nuts] The VE2ZAZ GPSDO

2006-10-20 Thread Dave Brown
Interested in any comments on this GPSDO - http://www3.sympatico.ca/b.zauhar/GPS_Std/GPS_Std.htm#GPS_Receivers DaveB, NZ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.8/489 - Release Date: 20/10/2006

Re: [time-nuts] The VE2ZAZ GPSDO

2006-10-20 Thread Dr Bruce Griffiths
Dave Brown wrote: Interested in any comments on this GPSDO - http://www3.sympatico.ca/b.zauhar/GPS_Std/GPS_Std.htm#GPS_Receivers DaveB, NZ Why anyone would bother to create something like this escapes me. Just another example of unintelligent engineering. If one is foolish enough to

[time-nuts] Ball/Efratom FRK-L manual.

2006-10-20 Thread Colin Bradley
Would anyone in the group know where I might obtain a manual for the Efratom FRK-L Rubidium Oscillator? I checked eBay but found no listings. Thanks [EMAIL PROTECTED] ___ time-nuts mailing list time-nuts@febo.com

Re: [time-nuts] Ball/Efratom FRK-L manual.

2006-10-20 Thread David Forbes
At 9:53 PM -0700 10/20/06, Colin Bradley wrote: Would anyone in the group know where I might obtain a manual for the Efratom FRK-L Rubidium Oscillator? I checked eBay but found no listings. Thanks [EMAIL PROTECTED] Colin, Googling for said manual (leaving off the L) vives this BAMA page: