[time-nuts] Anyone have a spare TAPR TNS-BUF for sale?

Does anyone have a spare TAPR TNS-BUF amplifier which they would be willing to sell? Many thanks. Jim Robbins ___ 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

[time-nuts] Datum 1000B

Does anyone have any nuts and bolts (disassembly?) experience they can share regarding fixing a Datum 1000B pn 05818-115 (4x10MHz) which has a manual frequency pot and which will not adjust to 10,000,000.000 MHz? It will actually go as low as “10,000,000.2890”, but no lower. (The unit does

[time-nuts] How to love your DC Barrel connectors

I forgot to mention in my last post that Switchcraft offers barrel connectors with a screw collar which will mate with their female jacks and holds the connector fast to the chassis. No pulling out. Of course, you would need to change the plug on the power supply to that one and replace the

[time-nuts] How to love your Power Poles.

I’ve used Power Poles for some years. I have a proper crimper intended for PP. Color coding is very useful. I think the complaints about them are due to two things: (1) improper crimping of the contacts and (2) heavy gauge wire. The PP15/30/45 use the same plastic housing while changing

[time-nuts] Datum 1130 10 MHz oscillator

Anyone have specs or manual for a Datum 1130 10 MHz oscillator? Many thanks. Jim Robbins ___ 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] E1938 info regarding LEDs, push button switch and EFC voltage notation

1. I have just acquired an E1938 and powered it up. It seems to work. I see that it has 4 blinking board LEDs (green, red, yellow, yellow) and a pushbutton switch at the end of the board opposite to the DB25 connector. Can anyone point me to either the schematic for the board or what these

[time-nuts] How get FEI-Zyfer 380 GPSDO to talk with computer?

Has anyone gotten an FEI-Zyfer 380 to talk to a control program? Can't seem to get it to talk to GPSCon or TAC32. Supposedly, it wants a program called "GPSMon" but I do not find the program with Google. Jim Robbins N1JR ___ time-nuts mailing

Re: [time-nuts] SiLabs5351C

Hello Peter, I found a note on Time-Nuts from you back on November 18, 2014 referencing the use of "SiLabs5351C" to get 10 MHz from a 15 MHz oscillator. Your Dropbox links don't work anymore. Would you have any further information you could share about your use of it? Many thanks. Jim

[time-nuts] TNS-BUF Amplifier

Many thanks for your helpful TN work to John A. , Dr. Bruce and John M. Ordered 3 pieces. 73, Jim Robbins N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and

Re: [time-nuts] Anybody want a Thunderbolt power supply?

Is there a problem running more than one Thunderbolt off of the same linear supply (assuming the supply can support the current demands) or does each Thunderbolt require its’ own separate linear supply? Jim Robbins ___ time-nuts mailing list --

[time-nuts] Does doubling a frequency alter the original ADEV of the frequency?

Would doubling the frequency of a 5 MHz oscillator to 10 MHz affect (or degrade) the natural ADEV of the 5 MHz oscillator? If so, how does it affect the original ADEV? Is there a preferred frequency doubler circuit which would do the least harm to the ADEV of the oscillator? The signal can

Re: [time-nuts] Pages on 5650-option-58

Hello Bill, I was reading an old note by you on Time-Nuts (April 7, 2013) where you refer to a .zip file of materials on the 5650 rubidium oscillators. There was a link to the zip folder (http://pages.suddenlink.net/stevewingate/cryptic1/for alec on 5650-option-58.zip

Re: [time-nuts] Best Rubidium Frequency Standard

Any one have any experience with the Symmetricom Militarized 8130A Rubidium? An update to a M100? Thanks. Jim Robbins N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] FE 405/5680/5650 caution !!!!

Bert, For those of us who are not familiar with your work, but who have purchased one of Skip's FE 405s, could you summarize what work you and your group have done on the "FE 405/5680/5650"? You say "Cash Olsen will be responsible for the sale of assembled and tested units."What assembled

[time-nuts] PDF Manual of Symmetricom 8130A Rubidium

Does anyone have a PDF of the Symmetricom 8130A Rubidium they can share or know where one is available? Many thanks. Jim Robbins, N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

[time-nuts] PRS10 1 PPS Out having random phase jumps

Jumps can occur over as little as 500 seconds. There is no pattern which I can perceive. When I look at the TL phase ("P") view, I see strong downward going "pulses" in the phase view. I have tried opening up the enclosure I mounted the PRS10 in to cool it. I can measure the temperature of

[time-nuts] PRS10 1 PPS Out having random phase jumps

Has anyone using the 1 PPS output from a PRS10 rubidium found significant random phase jumps? I'm getting these random phase jumps while using the PRS10 as a TI base for ADEV. I can use the 10 MHz output of the PRS10 to feed a T2mini without any similar jumps. Wondering if it might be heat

[time-nuts] RS232 Cable for SR620 use with TimeLab

Thanks to another TN member (Matthias Jelen) the necessary RS232 cable pin connections to connect the SR620 to TimeLab have been determined: DB9 (PC) - DB25 (SR-620) 1 - 8; 2 - 3; 3 - 2; 4 - 20; 5 - 7; 6 - 6; 7 - 4; 8 - 5 Further, it turns out that there is/was a commercially

[time-nuts] Schematic for SRS SR445

Anyone by chance have a copy of the schematic for a Stanford Research SR445 Pre-amplifier? The on-line Manual PDF is, of course, missing the schematic. Many thanks. Jim Robbins N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe,

[time-nuts] Any other useful purpose for Austron 2100F or SRS FS700 receivers in US

Does anyone know of any other genuinely useful purpose to which the Austron 2100F, SRS FS700, etc receivers can be put in the US since the demise of Loran? Inquiring minds would like to know. Jim Robbins, N1JR ___ time-nuts mailing list --

Re: [time-nuts] HP 58503A Com 4 conflict

Thanks Bob, Didier and Rex for the consult on the Com 4 Conflict and the teaching. Update: First, sorry for not posting adequate information in my question to start with. The result of some emails was a clarification that it was not the 58503A which was causing the issue with the Com ports,

[time-nuts] HP 58503A Com 4 conflict

My new old HP58503A wants to connect to my PC on Com 1-4. Other PC devices are already using those 4 Com ports. Is there any way to connect it to a Com port other than one of those 1 to 4? I currently use an Edgeport USB-to-Serial Converter which works very well to communicate with the PC

[time-nuts] Z3805A: How to correct a 1024 week date error?

Brief update: This receiver (whatever it is) refuses to forget 1995 despite un-powering, etc. I will learn to live with it, I think. It was sold to me as a Z3801A updated to 58503A. However: 1. The main board is labeled Z3805A (Not Z3801A) as are some of the chips. 2. It has only one 10

[time-nuts] Z3805A: How correct a 1024 week date error?

I've acquired a Z3805A converted to a 58503A which, notwithstanding tracking, seems to believe that it is 17 March 1995. I believe this is the famous 1024 week issue. Does anyone know how to spring the unit from it's historical bonds and get it to read the current date. I have tried commands

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

Many thanks for all the replies. Nigel, thank you for the link. I did have this pdf, but was not reading it correctly. It has been suggested that perhaps the counter main board was set up (modified) for a 12GHz channel 3. That would have required some mods to the actual main board, but I am

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

Thanks for everyone's help here. I have done some further sleuthing. I have a second 53132A which has a 3.0GHz Channel 3. So, I switched the new channel 3 board into the old 53132A and it reads properly. Then, I switched the old 3.0GHz Channel 3 board into the new 53132A and it also read

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

I think I may need to clarify my prior posting. Both old and new Channel 3 boards work fine (and read correctly) in my older 53132A counter. Both old and new Channel 3 boards fail to work properly in (and read 4x actual) the newer 53132A counter. So I think the problem is in the newer main

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

I hope this is not too OT. I have acquired a 3.0GHz original Channel 3 board for my Agilent 53132A counter. When installed, it reads four times (4x) the actual frequency. I'm wondering if anyone has any experience with such an installation and can point me to some setup item or zero ohm

[time-nuts] 3.0 GHz Channel 3 Installation in Agilent 53132A Counter

Thanks everyone for the thoughts. Nigel, I am not seeing the references to pin 9 connected to +12 and 10 to ground on the documentation I have. Perhaps you could send along your component level service manual. Address is jsrobb...@earthlink.net. Many thanks. Jim N1JR

[time-nuts] Setting up an HP53132A/TimeLab for Time Interval measurement

I am having some difficulty setting up my HP53132A to make 1 PPS Time Interval readings. I am outputting them to TimeLab via the counter's talk-only output. TimeLab reads the counter fine and I am able to make plots of 10MHz frequency comparisons. But I need a little help in properly setting up

[time-nuts] Dave Partridge Version 2 Full Board available

I have a spare new unused, fully populated, Version 2 Frequency Divider board by Dave Partridge for sale. Price is $80 plus $5.85 shipping (my cost was $98). Offering it here before placing on Ebay. Jim Robbins, N1JR ___ time-nuts mailing list --

[time-nuts] Relationship between fixes and time duration?

What is the relationship between the T'Bolt survey fixes number (e.g. 2000) and number of hours duration of the survey? Is it one fix per second or something? What number of fixes should be input to accomplish a 24 hour or a 48 hour survey? Second question: how is the survey duration set on

[time-nuts] Meaning of GPSCon Graph terms

I'm using GPSCon software on my Fury but I'm not clear as to the meaning of some of the terms which populate the Graph display? 1. At the top EFC graph (red), what do ad=0m and sd=0m mean? Is ad Allan Deviation? How do these numbers relate to the usual frequency scales we see of so many

[time-nuts] MTI 260 Stability Plot

Has anyone run a stability plot (0-100 or 1000 seconds) on the MTI 260 which they can share? I'd love to see how well it really does. Thanks. Jim Robbins N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

[time-nuts] Nifty MINI TIC for DMTD

Enthusiastically read about the above. Put me on the list also, please. A kit would be worth a premium price. Jim Robbins, N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

[time-nuts] VK4GHZ Thunderbolt Monitor and Commander

Just wanted to mention a terrific Thunderbolt Monitor design by VK4GHZ Adam Maurer (http://www.vklogger.com/forum). It monitors the Thunderbolt output on 4 screens (4x20 display) so no computer hookup is necessary to follow the GPS. A companion Commander makes use of a PICAXE to cause

[time-nuts] Any spare switches for Racal-Dana 1992?

I'm wondering if anyone has any spare Racal-Dana 1992 switch mechanisms they would sell? The switches can be replaced from the front of the panel (as reported here) and what I really need is the small black rubber piece (circular pill shaped) with the little nipple which sits within the 4

[time-nuts] Racal Dana 9466 5 MHz Oscillator

Anyone know which equipment used the Racal Dana 9466 5 MHz oscillator? Thanks. Jim Robbins, N1JR ___ 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

[time-nuts] T'bolt antenna lead-in running near HF RF transmitting coax

Can I run the coax feed-in from a Symmetricom 58532A GPS antenna (feeding my T'Bolt) adjacent to coax which is carrying HF RF of 500 watts? I have a 1.5 hole through an outside wall in my house through which my HF ham antenna coax passes (LMR400 coax). Can I safely run the GPS antenna

Re: [time-nuts] Fwd: CS reservoir depletion

Hi Said, Your email to the Time-Nuts List for Jan 16 referred to a plot of the Fury vs two typical plots available on a prominent Time-Nuts members' website... and talked about a red plot for the 5071A and a black plot for the Fury GPSDO (which I own). I can't seem to find the plot. Can you

[time-nuts] Z3805A

Does anyone have any links to any materials on the Z3805A receiver, especially as to the RS422 pinouts? I'm having trouble getting the receiver to talk with a Sealevel RS232 to USB converter (which works fine with the Z3801A). Thanks much. Jim Robbins, N1JR

[time-nuts] SR620: Cal Error 07 in Self Calibrate routine

My SR620 fails to complete its Self Calibration Routine by showing Cal Error 07. It won't proceed beyond that point, although at times it will jump to Cal 13-16 programs. Cal Error 07 is listed as flagging hardware problems in the Start TAC (Time to Amplitude Converters) which are the cirsuits

[time-nuts] No message Digests since Friday, 5/23/08

Hi all, Just checking in to make sure the email digests are still working. I haven't received any since last Friday with Vol 46, Issue 62. Thanks. Jim Robbins N1JR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to