According to the manual (publication TH62B4 issue 4.10.91) options 04T, 04A, 04B are all 10MHz. No mention of 04c. I vaguely remember hearing that Racal were so satisfied with their 5MHz standards than rather than produce a 10MHz version they simply attached a frequency doubler. I have a 9421 with doubler board attached.
John H. On 30 Jan 2012, at 17:24, cfo wrote: > On Fri, 20 Jan 2012 09:18:32 -0800, Larry McDavid wrote: > > >> One does occasionally find Racal 9462 ocxo offered on eBay. Also, one >> sometimes finds non-operational Racal instruments offered at low price >> but which to have Option 04E installed. I convinced one seller to remove >> the Option 04E module (the Racal 9462) and sell just that with much >> lower shipping cost. >> >> There is also what is evidently an older Racal frequency standard module >> similar in appearance to the 9462 but which has screws attaching the end >> plate rather than the soldered-can 9462; one of those is seen from time >> to time on eBay from the UK but I have avoided that. >> > > I have been looking for a Racal 9462 ocxo , for my Racal-Dana 1991 > counter. I will prob. use my Tbolt anyway , and save the money. > > But i'm confused ... Is it a 5 Mhz or a 10 Mhz unit. > > I have found pictures of one claiming it's 5Mhz > http://www.jbtech.de/parts/racal_dana/9462.html > > But i have also received a picture from jaap , with a racal 9492 , where > it clearly says its a 10Mhz unit. > > Can anyone clarify ? > > I think there was an "option" that enabled the use of "other ocxo values" > is that why a 5Mhz can be used , in some 1991's ? > > If i ever decide to get a OCXO , i would like to get the "right one". > > Regards > CFO > > > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.