Hi Burt: I just purchased four Shera boards from A&A Engineering and four Motorola Oncore UT+ receivers from TAPER.
I would be interested in any parts from you that would be available for purchase. I do not have a PIC programmer. I don't know where to find the firmware for the PIC 16 F XXX chip. I believe that it is different from the PIC16 C XXX firmware, but I could be wrong. I want to build four units. Two each for myself and two for my cousin Dan WA6DAN. One would be operational and the second would be a spare for each of us. What DAC are you using on the Shera board? Thanks, Ron -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of ewkeh...@aol.com Sent: Friday, August 24, 2012 1:21 PM To: time-nuts@febo.com Subject: Re: [time-nuts] HP-5065a bought and finally working! Edgardo If you need a Shera board and parts I still have some extras. Contact me off list. Bert In a message dated 8/24/2012 4:05:08 P.M. Eastern Daylight Time, xe1...@amsat.org writes: Dear Bert, Thank you for your always expert advise. I am receiving an HP 105B next week and for sure I will be doing some disciplining with the Thunderbolt. I just started to gather operational information on the 5065a to start a record. I also have been reading about those methods and also going deeper with your information. Cheers! Edgardo Molina Dirección IPTEL www.iptel.net.mx T : 55 55 55202444 M : 04455 20501854 Piensa en Bits SA de CV Información anexa: CONFIDENCIALIDAD DE INFORMACION Este mensaje tiene carácter confidencial. Si usted no es el destinarario de este mensaje, le suplicamos se lo notifique al remitente mediante un correo electrónico y que borre el presente mensaje y sus anexos de su computadora sin retener una copia de los mismos. Queda estrictamente prohibido copiar este mensaje o hacer usode el para cualquier propósito o divulgar su en forma parcial o total su contenido. Gracias. NON-DISCLOSURE OF INFORMATION This email is strictly confidential and may also be privileged. If you are not the intended recipient please immediately advise the sender by replying to this e-mail and then deleting the message and its attachments from your computer without keeping a copy. It is strictly forbidden to copy it or use it for any purpose or disclose its contents to any third party. Thank you. On Aug 22, 2012, at 4:18 PM, ewkeh...@aol.com wrote: > You can discipline a HP 5065A easily using a Shera with the Tbolt 1 PPS > and a LTC 1655 DAC in stead of an AD 1861. > Bert Kehren. > > > In a message dated 8/22/2012 8:23:06 A.M. Eastern Daylight Time, > jlt...@att.net writes: > > Edgardo, > > Congrats on getting the 5065A up and operational. Make sure the A11 Board > (Temperature Controller) is all OK. Failure there can destroy the A12 RVFR > Assembly. There is a lot of 'expertise' on the list for this unit. > > What is the serial number of your unit and what is the part number of the > manual you have? > > I have a couple of manuals and I may also have the 'change sheets' that > updates the manual to your serial number. It may take me a while to chase > that down but if I have the 'change sheets', I can scan them and send them > to you. > > I have not heard of anyone 'disciplining' the 5065A by GPS, other than by > hand from week to week. However, the 105B has a built in connection on the > back that is great for that purpose (negative slope, as I recall) and I > have > done that using a Brooks Shera controller board and the 1 PPS from my > TBolt. > It works quite well. > > Joe > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Edgardo Molina > Sent: Wednesday, August 22, 2012 12:22 AM > To: time-nuts@febo.com > Subject: [time-nuts] HP-5065a bought and finally working! > > > Dear Group, > > I wish you well. > > Do you recall a message and thread about a month ago with my concerns about > buying a used / unknown condition HP-5065a rubidium frequency standard? I > bit the bullet and bought it. Almost mint condition (cosmetically speaking) > and with several operational issues. > > Well, It took me several weeks to put it back to work. Several capacitors > on > several boards along with a couple of transistors and an IC were replaced. > After that any being bored by the yellow light, it finally came off to > allow > a beautiful green lock condition light. I went through the necessary steps > to tune it and calibrate it. Now, as I have been told recently. "You have > been bitten by the Time Nuts bug." I am not complaining at all. > > Now the technical issues if you kindly allow: > > a. Does anybody have an HP-5065a manual for the latest versions? Mine > (which > I downloaded from the Internet) is intended for earlier versions. It seems > I > have one of the last produced units. I would kindly appreciate any help on > this and I am willing to pay for time and expenses to anybody who could > help. During the repair process I found several differences in the earlier > versions design and had to figure out hoy mine works. > > b. Is it possible to build a GPSDRb? I would like to know if it is > reasonable to pursue the goal to discipline the 5065a with a TB which I > also > got recently. > > c. I am waiting for the delivery of a recent purchase. An HP-59309a Digital > Clock to go with the HP 5065a. How I wish I could find the optional LED > integrated optional clock and 1PPS output. Is my purchase a good match for > the 5065a? Any other suggestions to drive a clock? > > d. I am waiting also for de delivery of an HP-105b mint condition quartz > frequency standard. Would a second 59309a make sense to use it with this > quartz standard? Or just saving it for a Cesium? Anybody willing to sell a > spare, dust gathering, clean unit to me? > > e. Any suggestions for software of lab equipment to measure my experiments > like AD, jitter, phase comparisons, etc? > > > While I wait I am doing some experiments with a FE Rb standard to > discipline > an Adret synthesiser to output 32.768 KHz to directly drive a Nixie clock > kit I just finished building. > > Your comments are surely welcome. Thank you! > > Kind regards, > > > Edgardo Molina > XE1XUS > Mexico > > > _______________________________________________ > 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. > > _______________________________________________ > 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. _______________________________________________ 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.