Re: [time-nuts] OT: 5372A
What's this?? Has gold been discovered on the west coast again? Shall I cash in all my timenuts acquisitions for a pan and a donkey? :-) for the sarcasm impaired . . . Bill Hawkins -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Dave Mallery Sent: Sunday, November 21, 2010 7:09 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] OT: 5372A planning to move to gold beach... 73 dave ___ 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.
Re: [time-nuts] OT: 5372A
planning to move to gold beach... 73 dave On Sat, Nov 20, 2010 at 8:41 PM, Eric Garner wrote: > Out of curiosity, how many other time-nuts are here in Oregon ( besides me, > and apparantly pete) > > > > Sent from my Banana Jr. mobile device > > > On Nov 19, 2010, at 3:15 PM, Magnus Danielson > wrote: > > On 19/11/10 18:13, Pete Lancashire wrote: >> >>> Thanks everyone. The question came up in what I am being charged for >>> shipping >>> From Texas to Oregon, $140 UPS Ground. Not complaining since I got the >>> thing >>> for $53. Hopefully will be FIP. >>> >>> -pete >>> >>> PS Thanks also on the battery issue. Next to get a real service manual. >>> >> >> I've done most of the things I need with what's on the net. >> >> Replacement of the battery was trivial. Finding out that it was the root >> cause was a bit less than obvious. The input sensitivity calibration always >> goes flat-line, being a huge factor of annoying you, as you would need to >> trim it up on each power-up. It's done with menues and no service-mode >> required. Replacing the battery is a matter of finding a 3,6V Lithium >> battery and do some soldering. Then after power-up do the input calibration >> and you are all set for the next 20 years or so. It is worth the effort and >> not hard at all. >> >> Cheers, >> Magnus >> >> ___ >> 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. > -- Dave Mallery, K5EN (ubuntu linux 10.10) HC31 Box 99E; Williamsburg, NM 87942 no gates... no windows! free at last! linux counter #64628 (since 1997) "People aren't as dumb as Microsoft needs them to be." --PJ, May 2007 ___ 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.
Re: [time-nuts] Changing frequency of an HP 10811 oscillator
Demian, the big question is, what are your requirements? Long term stability, phase noise, ADEV,...? You'll probably spend a multiple of what a finished product costs to get the 10811A with a cstom made x-tal on specs. Not to speak of the phase noise test equipment needed, that will break your bank if you have to rent it for a couple of weeks... The easiest way to get 20 MHz out of a 10811A is to double the output frequency. The next option would be to phase lock a 20 MHz VCXO to the 10811A. Obviously, you can also divide a 80 MHz, 100 MHz etc. oscillator down to 20 MHz. So, the question is, what do you really need? Adrian Demian Martin schrieb: Having seen the note on alternate crystals for the HP10811 oscillator I was wondering if its realistically possible to re-crystal one to frequencies in the 20 MHz range? Some other components may need to be changed of course but is this worthwhile exploring? Who would be a good vendor for a few custom SC crystals that would work in an HP10811? I have been quoted prices in the $500+ range for finished products and want to explore a more cost effective option before I spend a lot of money. Demian Martin Product Design Services San Leandro, CA 94577 209 613 6990 ___ 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.
Re: [time-nuts] Changing frequency of an HP 10811 oscillator
Hi The crystal package used in the 10811 is a bit unusual. The crystal is a tight fit in the heater block, so you would need a "same/same" package. A loose fit would impact the thermal performance. Bottom line - you need to find somebody who does: 1) That package 2) SC's at your (likely odd) frequency 3) Small orders My *guess* is that the crystal isn't going to be cheap. Bob On Nov 21, 2010, at 1:32 PM, Demian Martin wrote: > Having seen the note on alternate crystals for the HP10811 oscillator I was > wondering if its realistically possible to re-crystal one to frequencies in > the 20 MHz range? Some other components may need to be changed of course but > is this worthwhile exploring? Who would be a good vendor for a few custom SC > crystals that would work in an HP10811? I have been quoted prices in the > $500+ range for finished products and want to explore a more cost effective > option before I spend a lot of money. > > > > Demian Martin > > Product Design Services > > San Leandro, CA 94577 > > 209 613 6990 > > > > ___ > 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.
Re: [time-nuts] Christmas Comes Early #1
Hello The Net: The GPIB controller is spoken for. Stan, W1LE On 11/21/2010 11:20 AM, Stan, W1LE wrote: Hello The Net: Excess to my needs is a National Instruments model: GPIB 232CT 64K, P/N: 180450-01 Rev B1 Looks to be a RS-232 to IEEE 488 controller (GPIB adapter) in a standalone box. I do not have the wall wart power supply, but it uses +9VDC @ 700 mA max. I do not have any drivers or any documentation, which should be on the NI website. Connectors are for a female 25 pin D shell for the RS-232 and a female GPIB connector. Does it work ? I do not know. Free to the first respondent who wants to pay the postage. Should fit in one of those priority mail boxes with unlimited weight. I grew up and got a Prologix USB to GPIB adapter and I have never looked back. Stan, W1LE Cape Cod FN41sr z ___ 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] Changing frequency of an HP 10811 oscillator
Having seen the note on alternate crystals for the HP10811 oscillator I was wondering if its realistically possible to re-crystal one to frequencies in the 20 MHz range? Some other components may need to be changed of course but is this worthwhile exploring? Who would be a good vendor for a few custom SC crystals that would work in an HP10811? I have been quoted prices in the $500+ range for finished products and want to explore a more cost effective option before I spend a lot of money. Demian Martin Product Design Services San Leandro, CA 94577 209 613 6990 ___ 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.
Re: [time-nuts] Christmas Comes Early #1
Hi These gizmos can be very useful when the counter is on one end of the room and the computer is 30+ feet away. They are a bit speed limited in that case, but for a reading a second - no problem. Bob On Nov 21, 2010, at 11:20 AM, Stan, W1LE wrote: > Hello The Net: > > Excess to my needs is a National Instruments model: GPIB 232CT 64K, P/N: > 180450-01 Rev B1 > > Looks to be a RS-232 to IEEE 488 controller (GPIB adapter) in a standalone > box. > > I do not have the wall wart power supply, but it uses +9VDC @ 700 mA max. > I do not have any drivers or any documentation, which should be on the NI > website. > > Connectors are for a female 25 pin D shell for the RS-232 and a female GPIB > connector. > > Does it work ? I do not know. > > Free to the first respondent who wants to pay the postage. > Should fit in one of those priority mail boxes with unlimited weight. > > I grew up and got a Prologix USB to GPIB adapter and I have never looked back. > > Stan, W1LE Cape Cod FN41sr > > > > > z > > ___ > 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] Christmas Comes Early #1
Hello The Net: Excess to my needs is a National Instruments model: GPIB 232CT 64K, P/N: 180450-01 Rev B1 Looks to be a RS-232 to IEEE 488 controller (GPIB adapter) in a standalone box. I do not have the wall wart power supply, but it uses +9VDC @ 700 mA max. I do not have any drivers or any documentation, which should be on the NI website. Connectors are for a female 25 pin D shell for the RS-232 and a female GPIB connector. Does it work ? I do not know. Free to the first respondent who wants to pay the postage. Should fit in one of those priority mail boxes with unlimited weight. I grew up and got a Prologix USB to GPIB adapter and I have never looked back. Stan, W1LE Cape Cod FN41sr z ___ 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.
