Re: [time-nuts] Anybody want a Thunderbolt power supply?
Jim, I use a HP 6236B triple power supply to drive 2 each T'Bolts. Works fine after the T'Bolts warm up, with limitations on a cold start up. But once they warm up all is OK. Using a common outside puck antenna and a HP RF distribution block I can run 3 T'Bolts and get essentially the same results. #1 T'Bolt is on a HP 6235A DC PS and #2 and #3 are on the 6236B. #1 has been on for years. I am planning to box up and use a Mean Well SMPS common power supply that will handle the load current of 3 T'Bolts starting cold. Adding a few digital panel meters to measure individual load currents and voltages. Stan, W1LE Cape Cod On 9/1/2016 9:44 AM, James Robbins wrote: 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@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] More eLORAN Info
More eLORAN info: de Stan, W1LE Forwarded Message Subject:FW: eLORAN Date: Thu, 07 Jan 2016 11:19:51 -0500 From: Charles Schue (Taviga) <charles.sc...@taviga.com> To: stanw...@verizon.net CC: 'Charles Curry' <charles.cu...@taviga.com>, Stephen Bartlett <stephen.bartl...@ursanav.com>, 'Dana Goward' <dgow...@rntfnd.org> Hi Stan, You are welcome to distribute this and other Taviga, UrsaNav, or Chronos Press Releases as you see fit. You and your colleagues might also take a look at the Resilient Navigation and Timing Foundation's website at: www.rntfnd.org. I've added their President, Dana Goward, to this email FYI. Since you received this press release, I expect you have already been talking with Steve Bartlett - our VP of Operations at our office in N. Billerica, MA. If not, he can inform you of any timing trials that we may be running. He can be reached at the included email, or at 781.538.5299 x108. We are always interested in feedback from the HAM community, both nationally and internationally, so that we can better understand how our signals are being received and used. Of course, if you find the signals useful, then we would appreciate any support you or your colleagues/organizations might provide to eLoran initiatives via your elected officials. Please do not hesitate to reach out to us if we can answer any questions. Best, Chuck. Very Best Regards, Charles Schue, FRIN Co-Founder & Director M: +1.703.623.5212 -Original Message- From: Stan W1LE [mailto:stanw...@verizon.net] Sent: Thursday, January 7, 2016 11:00 To: charles.sc...@taviga.com Subject: eLORAN Hello Charles, Do you mind if I distribute this press release to my local and international ham radio friends with an interest in timing and LF reception ? Do you mind if I distribute future press releases ? I missed being able to achieve Cs frequency accuracy in the LORAN C system with Nantucket ~ 40 miles away. I do my receiving with a Stanford Research Systems FS700 LORAN C Frequency Standard. I will await your approval to redistribute on the Internet. Stan, W1LECape Cod FN41sr ___ 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] LORAN Activity in the US
Hello The Nets: currently my receiver is locked and I am tracking the LORAN emitter in the US. Rx is a SRS FS700, Austron LF Multifilter #2084, a pair of orthogonal delta loops, and a ARR preamplifier at the antenna. A deep cycle battery is at the antenna for DC power. Stan, W1LECape Cod FN41sr ___ 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] eLORAN test 6 Aug. Both Dana In. and wildwood nj
I am locked at 8970 GRI, have been for a few hours No luck with 9960 GRI from this location. Using a SRS FS700 Stan, W1LECape CodFN41sr On 8/6/2015 4:10 PM, paul swed wrote: not on that I can see On Thu, Aug 6, 2015 at 12:46 PM, D W watsondani...@gmail.com wrote: Picking up a strong signal here in North Carolina. My 2100F has been locked to Wildwood all morning. I'm using a 5' wire whip and a home brew preamp. Not hearing Dana yet. Dan On Aug 4, 2015, at 2:34 PM, paul swed paulsw...@gmail.com wrote: The Wildwood, NJ Transmitter will be on air from 0900 (EDT) 06 August until 1800 (EDT) 07 August. Wildwood will be broadcasting as 8970 Master and Secondary. The Dana, IN transmitter will also be on air intermittently during this time period. Dana will be broadcasting as 9960 Master and possibly other rates and stations as well. So at least 2 GRIs and at different locations. That will make it pretty interesting. Regards Paul WB8TSL ___ 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.
Re: [time-nuts] 53132A Cooling fan
Hello The Net: Mike, thanks for the 53132A fan info. I also have a noisy fan. I have considered adding a proportional fan controller since more colling is needed if aditional options are added, like a more stable internal reference or a prescalar to 3 GHz or 12 GHz. Less cooling is needed if no internal options are included. Less cooling can mean a slower fan speed and lower acoustic noise. Anyone have any thoughts on exactly where to put a temperature sensor for a proportional fan controller? The W1GHZ.ORG website had a fan controller. Anyone have any thoughts on how to increase the intensity of the dim display ? Is it a power supply issue ? I use my 53132A with TimeLab to measure the performance of different oscillators. Stan, W1LECape Cod FN41sr On 11-Jan-15 8:29 AM, Mike George wrote: I replaced one last year. I used a Delta EFB4012HD from Digi-Key but it isn't in stock currently. I just looked up the specs on the fan I removed and matched it to the fans available. There were multiple suitable substitutes. On 1/11/2015 00:59, Loïc Moreau wrote: Hi, My 53132A cooling fan is becoming extremely noisy so I have to fix it or find ear plugs fast. If anybody as encountered the same problem witch I suppose is common I will be interested if there is replacement part easily available for that purpose. Regards Loïc ___ 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.
Re: [time-nuts] HP3336B S/N Question
Hello Don, I suspect: Original sticker 2127 early '80s manufacture later sticker 2514, remanufactured or modified to special customer specs, mid 80's 3040L is the custom system the device was used in. I like this synthesizer, either get the WECO adapter to a BNC(female) or just add a female BNC on the blank spot on the 75 ohm output front panel. Stan, W1LECape Cod On 10-Jul-14 2:26 AM, w...@aol.com wrote: So... My HP3336B has TWO HP S/N plates... The original plate: 2514A0 and a secondary HP sticker with: 2127A00xxx Also there is another HP sticker with: 3040L SYSTEM Anybody have any clues on this?? TNX 73 Don W4WJ ___ 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] WTB WECO Adapter
Consider the Trompeter series of adapters.Stan, W1LE On 10-Jul-14 9:02 AM, w...@aol.com wrote: Hello all... I can't find my WECO adapter for my HP3336B. It got lost in the move a while back. ;-( Am in need of a WECO to BNC adapter, WECO 439A/440A Anybody have one that they would be willing to sell? TIA... 73 Don W4WJ ___ 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] SRS FS700 questions
Hello Nigel, I would consider doing the maintenance/calibration/performance verification procedure in the manual. A procedure will show if you have equal swing on the VCXO about the center freq needed. The VCXO can be mechanically adjusted for center of the VCXO electronic control range. I recall no backlight on the LCD on mine. It has been awhile since I last turned mine on. Stan, W1LE On 03-May-14 12:57 PM, gandal...@aol.com wrote: My FS700 arrived yesterday, complete with bonus artistic effects due to the sender believing a thin coat of bubble wrap with an outer layer of cardboard cut from a box and just taped on top, no padding or air gap, would be the obvious way to ship it:-( Physically at least it seems to have survived remarkably well, no damage to the BNCs and the front panel trim, outer covers and transformer cover all looking pretty good again after a couple of hours work. Not having any rack ears attached was probably quite a bonus with it shipped like this! The only obvious internal damage, and it might have been that way before shipping anway, are three vertical inductors held to the circuit board by silicon rubber or hot melt adhesive that are loose but still seem to be electrically connected Anyway, it powered up ok and is indicating it's locked onto Anthorn in the Lessay chain, even if it does believe it's found the never built station at Loop Head in Ireland:-), but I'm not sure if it's functioning properly. It's close enough that I don't want to start pulling it apart for the sake of it without being sure, and it may just be a case of waiting for it to settle, but after showing as locked for several hours the 10MHz output, as indicated both by the internal display and an external counter, is swinging back and forth quite rapidly anywhere within approx +/- 3 parts in 10^9. There was an obvious change in the crystal oscillator frequency as the oven warmed, and another when the conditioning seemed to take over, but it's been hunting like this ever since it first indicated lock and with no obvious change, just when I do think it might be converging it opens up again. So first question is, can anyone tell me please if this is normal or close enough that I should expect it to settle eventually, or do I need to start investigating further? Second question, could somebody confirm please whether or not the LCD display is supposed to be backlit? This one isn't, but it's not immediately obvious from photos I've found online whether or not it should be, and although the contrast range on this seems to be fine it's certainly not easy to see. Last question, for now at least:-), this unit has the FS800 PCB rev C, with revision 2.0 firmware, does anyone know if any later firmware is available that includes Anthorn, or at least Rugby, as part of the Lessay chain? Regards Nigel GM8PZR ___ 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] New Acquisition: HP-53132A
Thanks for all of the assistance. I will initially use a separate power strip for similar parasitic AC loads. Firmware version is 3703. Stan, W1LE on Cape Cod 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] New Acquisition: HP-53132A
Hello The Net, I just got in the counter and the fan is always ON, even with the front panel switch OFF. I looked in the manual but could not find anyway to change this. The counter has the standard internal 10 MHz reference, but I will be using a Trimble T'bolt GPS/DO for the external reference. The fan is part of the power supply module. I can see a possible need for it if a premium ovenized reference is always ON. But I do not have the premium internal reference. Is there a way to only allow the fan to be ON, if the front panel switch is ON ? Possibly a jumper setting ? Are there any key strokes to determine the software version, other than a check sum ? I do not have the standard HP serial number, with the vintage (manufacturing date code) code first. The unit was manufactured in Korea. Stan, W1LE on Cape Cod 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.
Re: [time-nuts] VECTRON 371Y383 oscillator
Make a phone call to the NH plant. Ask a product specialist for details. May get shuffled to the PA plant. Persisit. Stan, W1LE Cape Cod On 12-Aug-13 8:53 AM, Collins, Graham wrote: Good day all, I recently purchased a VECTRON 10Mhz oscillator like the one in the this eBay listing 38133695 Very typical of some of VECTRON older offerings but I have been unable to find much if any information on this oscillator. I haven't yet emailed VECTRON but thought I might first ask the learned members of this list if anyone has or knows any details before I plug it in to see what I get. The oscillator is marked 371Y383 which a search of VECTRONS returns nothing but comparing to pictures and drawings of some older VECTRON units seems to indicate it might be or is very similar to their old CO-351 product. Cheers, Graham ve3gtc ___ 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] GPIB/HPIB Address 31, Talk Only
Hello The Net, Is address 31, for talk only, a HP/Agilent feature only, or do tothers provide talk only on the buss ? I am looking at RF frequency counters to 12 GH, for use with TimeLab. Stan, W1LE Cape Cod FN41sr ___ 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] HP and other equipment failure
PFC to me is power factor correction, not only the classical power factor to minimize (VAR) volt-amp reactive component, but also to remove the harmonic load current imposd on the electrical power system. A '90's onward technique. in th 80's and 90's without the harmonic load current reduction and having a few 100 end items of equipment, each withtheir own a switch mode power supplly, it was not uncommon to find hundreds of amps of the third harmonc on neutra, in the electrical power distribution system. Could be a serious EMC problem if you were dealing with voice grade channels. And people safety issues. Stan, W1LE Cape Cod On 15-Jun-13 5:52 PM, J. L. Trantham wrote: Sorry for the interruption but what is 'PFC'? Thanks. Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Poul-Henning Kamp Sent: Saturday, June 15, 2013 4:09 PM To: Robert Atkinson; Discussion of precise time and frequency measurement Cc: Perry Sandeen Subject: Re: [time-nuts] HP and other equipment failure In message 1371329221.83869.yahoomail...@web171902.mail.ir2.yahoo.com, Robert Atkinson writes: While I agree with everything else you say, you CAN have too much filter capacitance. At least where dc rectifier / filter (smoothing) circuits are concerned. Increasing C causes increased ripple current [...] And ripple current can be a major source of power-line frequency noise in all electronics. The main reason why switchmode power-supplies today (can) outperform linear power supplies with respect to noise, is because the legally mandated PFC correction eliminates the bridge-rectifier ripple harmonics. I would not hessitate to use a good quality switchmode to replace the linear supply in a HP5370B. I did some experiments a couple of years ago, with an audio-amplifier: I put a standard PFC corrector chip on the secondary side of the trafo. The overall result was not satisfactory, but the 50 Hz sneer we all know and hate was absent, and the Tzoing! power-on mechanical shock from the trafo was also eliminated, as was the consequent dimming of the lights ;-) The main reason not to do this, is that you need some physically gargantuan coils for a 10A+ PFC-switcher. ___ 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] FLUKE PM6680B Counter Time View software for the PC
Hello A.B., Actually TimeLab is collecting data right now and I am quite happy with it. I will be even happier when the PM6680B arrives on Tuesday and TimeLab can drive it directly without the talk only function I am currently using. The FLUKE TimeView is only an alternative, whose capabilities I hope to experience. I am currently using a HP5384A in talk only mode (HPIB address 31) with TimeLab to look at some OCXOs. A T'Bolt GPS/DO provides the 10 MHz reference. Now I better understand why there is a rubber gasket under the adjustment screw cover on the hermetically sealed cans of the OCXO. I can see the barometric pressure changes on frequency using TimeLab, at E-10 levels. Maybe the supposed drift due to the atmospheric pressure is due to the propagation of the GPS signals that can effect the 10MHz reference ?? May have to go back to a Rb reference to verify. It is also interesting to see how aging drift improves with time under power. I had been holding out for a HP 53132A counter but I am a frugal Yankee and I settled on the PM6680B for about 25% of the cost of a HP 53132A. Waiting for FedEx... Stan, W1LE Cape Cod FN41sr On 5/25/2013 8:14 AM, Azelio Boriani wrote: Why not TimeLab? On Sat, May 25, 2013 at 4:41 AM, Stan, W1LE stanw...@verizon.net wrote: Hello The Net: Can anyone point me to a source for the subject software ? Thanks Stan, W1LE Cape Cod ___ 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] FLUKE PM6680B Counter Time View software for the PC
Hello The Net: Can anyone point me to a source for the subject software ? Thanks Stan, W1LE Cape Cod ___ 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] Time Nut Pickens at the MIT Flea ?
Anyone got any Time Nut quality items at the MIT fleamarket today ? Stan, W1LE Cape Cod ___ 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] Are there any rubidiums programmahttps://mail.google.com/mail/?shva=1#inboxble to 40 MHz?
I should of been clearer, Thanks for your comments. final configuration is: OCXO as a 10 MHz reference to the 106.5 MHz PLL then the DB6NT multiplier chain for the LO. All of the stability I need for a contest weekend. Stan, W1LE On 3/26/2013 1:21 AM, Rex wrote: Please tell us if I am parsing the content of your message correctly with my inserted comments. On 3/25/2013 9:09 AM, Stan, W1LE wrote: Hello Dave, The problem I experienced with a Rb at 10 MHz stabilizing a AD6IW PLL at 106.5 MHz for a DB6NT 10 GHz G2 transverter, I assume by stabilizing you mean that the rubidium was providing the reference frequency to the PLL. was the significant microphonics after multiplication. The original xtal oscillator did not have microphonics, but would drift. My solution was to add a ISO-Temp 10 MHz OCXO as a reference to the PLL. By add I think you mean replace, as in, the rubidium is no longer used but the OCXO has replaced it as the PLL's reference. If you really meant add, that would imply that somehow the rubidium is disciplining the 10 MHz OCXO. This provided me with the frequency accuracy and stability needed for a weekend of microwave contesting, USB/CW My 10 GHz operation is portable and I rove. Stan, W1LECape Cod FN41sr On 3/25/2013 10:17 AM, David Kirkby wrote: I'm possibly looking for a 40 MHz source and I know some of the rubidiums are programmable. But can any of the affordable ones be programmed to work at 40.0 MHz? I was looking for a source to drive this 144 MHz - 10 GHz transceiver. http://www.chris-bartram.co.uk/products.html The TCXO oscillator is off the board and a separate item, but costs £40 and then one ideally wants to lock that to a more precise source. The oscillator will lock to an external 10 MHz source, but then one needs to buy both a 10 MHz rubidium as well as this 40 MHz TCXO. Hence I was wondering if there was a cheaper more compact solution, which just used a rubidium, and dispensed with a TCXO. 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. ___ 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] Are there any rubidiums programmahttps://mail.google.com/mail/?shva=1#inboxble to 40 MHz?
Hello Dave, The problem I experienced with a Rb at 10 MHz stabilizing a AD6IW PLL at 106.5 MHz for a DB6NT 10 GHz G2 transverter, was the significant microphonics after multiplication. The original xtal oscillator did not have microphonics, but would drift. My solution was to add a ISO-Temp 10 MHz OCXO as a reference to the PLL. This provided me with the frequency accuracy and stability needed for a weekend of microwave contesting, USB/CW My 10 GHz operation is portable and I rove. Stan, W1LECape Cod FN41sr On 3/25/2013 10:17 AM, David Kirkby wrote: I'm possibly looking for a 40 MHz source and I know some of the rubidiums are programmable. But can any of the affordable ones be programmed to work at 40.0 MHz? I was looking for a source to drive this 144 MHz - 10 GHz transceiver. http://www.chris-bartram.co.uk/products.html The TCXO oscillator is off the board and a separate item, but costs £40 and then one ideally wants to lock that to a more precise source. The oscillator will lock to an external 10 MHz source, but then one needs to buy both a 10 MHz rubidium as well as this 40 MHz TCXO. Hence I was wondering if there was a cheaper more compact solution, which just used a rubidium, and dispensed with a TCXO. 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. ___ 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] LORAN C still on the air 24 hours SRS 700 looking good
Hello Scott, Fire it up and set it to a GRI of 89700 and give it a listen. Stan W1LE Cape Cod On 3/20/2013 1:07 AM, Scott Harris wrote: I've got an SRS 700 and I live in CO. Any chance I can pick up the new LORAN signals? Thanks, -Scott On Mar 19, 2013, at 9:33 AM, paul swed paulsw...@gmail.com wrote: ___ 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.
Re: [time-nuts] LORAN C still on the air 24 hours SRS 700 looking good
Just got in. LORAN C had been locked since Paul mentioned the signal. So far it is comparing to my T'Bolt GPS/DO to 8E-13. Stan, W1LE Cape Cod ___ 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] Loran again
Yes, LORAN is in and I have been locked up to GRI 89700, for a few hours now. Stan, W1LE Cape Cod On 3/10/2013 6:55 PM, Rich and Marcia Putz wrote: Hi All; I hear Loran C signals back on again, I'll fire up the SRS FS-700 and check. RP ___ 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] GPIB counter logging / plotting software?
Yes, there is software out there. Others would best comment. My indirect approach is different. I take the unknown RF signal into my RX converter with a GPS/DO stabilized LO, then the IF into a RX with a stable LO, and take the audio out to a computer soundcard and use ARGO software to display the drift. ARGO can be found at: www.weaksignals.com Stan, W1LECape Cod FN41sr On 2/25/2013 10:39 AM, Dan Rae wrote: I am working on 400 - 500 MHz DDS clocks for an amateur radio project and would like to record over gpib and plot the relative frequency drifts over time of different versions of the oscillator from a cold start. I have Racal 1992 and -hp- 5345 counters available, themselves driven from gps. I have the prologix USB thingy. Does anyone know of any software that will enable me to do this, without spending lots of money? Dan ___ 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] Locked onto LORAN 8970 GRI Monday AM
at 17:45Z, after 27 hours of continuous lock: freq offset is now -2.1E-12 and has been as low as -7E-13, compared to T'Bolt 10 MHz. Master station is at 59 dB, slave is at 63 dB signal strength. Stan,W1LE Cape Cod On 2/5/2013 12:12 PM, Bill Riches wrote: Hi Paul, I thought I was receiving Wildwood which is 3 miles or so away but apparently not. I nulled out the sig with my LFL1010 loop and get a null about 30 degrees which is toward Boston but maybe it could be Seneca after figuring antenna error and Mag variation. Signal strength with the loop max is -40 db and null is -60 dbm. I did a conversion and comparison using my icom 7600 and HP3336 sig gen. Measuring with the HP 3586 did not agree with the previous method - I imagine the modulation screws up its reading. I will play around with the Perseus later and see what that reads. So - My question is - what stations are you copying? I will continue to see if Wildwood comes up again. My contact with Wildwood has left the room! 73, Bill, WA2DVU Cape May, NJU ___ 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] Locked onto LORAN 8970 GRI Monday AM
Hello Bill, I have no real idea. I can not DF at this time. Antenna is an omni. I suspect the FS700 receiver looks at GRI data and placement within the waveform and goes to a look up table in firmware to tell me the supposed location to the LORAN plan 10 years ago. Only thing that may be possible is the RX signal strengths are different for master and slave, so they may be physically separated or their TX RF is from one location at different power levels. It will be interesting what your contact at Wildwood (NJ) has to say. Stan, W1LE Cape Cod On 2/5/2013 1:06 PM, Bill Riches wrote: OK Stan, What stations are you receiving - not GRI numbers but locations! Bill Riches Cape May - ___ 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] Locked onto LORAN 8970 GRI Monday AM
Have had lock onto slave Seneca for about 20 minutes on GRI 8970. compared to GPS/DO: phase offset 3.6 degrees, freq offset 6E-11 Stan, W1LE Cape Cod On 2/4/2013 9:48 AM, paul swed wrote: Don't hear LORAN today On Sun, Feb 3, 2013 at 6:18 PM, Stan, W1LE stanw...@verizon.net wrote: Hello The Net: was able to get a lock onto this GRI but not the master station. GRI 9007 is the EIDI chain with slaves at BO, Norway, Jan Mayen, and Vaerlandet also in Norway. Lock was short lived, but I will continue to monitor tonight. equipment: 2 orthogonal delta loops, top terminated, the SRS FS700 RX, Austron multifilter (multcoupler 1X4) Stan, W1LE Cape Cod __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://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.
Re: [time-nuts] Locked onto LORAN 8970 GRI Monday AM
After 11:20 hours still tracking and locked to LORAN. Frequency offset compared to my T'Bolt GPS/DO is -2.5E12. Stan W1LE Cape Cod On 2/4/2013 8:56 PM, paul swed wrote: We can only dream. But will take what I can get for as long as I can get it. It sure in the heck kicks wwvb's capabilities. Regards Paul On Mon, Feb 4, 2013 at 6:20 PM, J. Forster j...@quikus.com wrote: Great. Now if the transmissions continue and the format doesn't change! -John ___ 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] LORAN GRI 9007 reception
Hello The Net: was able to get a lock onto this GRI but not the master station. GRI 9007 is the EIDI chain with slaves at BO, Norway, Jan Mayen, and Vaerlandet also in Norway. Lock was short lived, but I will continue to monitor tonight. equipment: 2 orthogonal delta loops, top terminated, the SRS FS700 RX, Austron multifilter (multcoupler 1X4) Stan, W1LE Cape Cod ___ 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] Loran again
Still locked onto the Dana/Seneca Loran stations at 8:38 am local. Comparison to GPS/DO is about the same. No new slaves detected. Stan, W1LECape Cod On 2/1/2013 12:30 AM, Stan, W1LE wrote: Fired up the SRS FS700 and auto found the GRI 89700 microsecond stations in Dana Il (master) and Seneca NY, (slave) both with equal signal strength of 63 db. Other slaves were not to be found. Noise margin of 32 dB and Rx gain of 72dB. So the Rx is all locked up. Tomorrow I will have more data comparing the 10 MHz from the T'Bolt. Right now they are comparing to within 10EE10. Stan, W1LE Cape Cod On 1/31/2013 10:44 PM, Stan, W1LE wrote: What GRI should we be listening for ? Stan, W1LECape Cod FN41sr On 1/31/2013 9:56 PM, paul swed wrote: Rich indeed its on the air. Warming up the FS700 to see if it will lock. Have a pattern ram thats getting flakey and takes about 30 minutes to warm up along with the oven. ___ 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.
Re: [time-nuts] Loran again
What GRI should we be listening for ? Stan, W1LECape Cod FN41sr On 1/31/2013 9:56 PM, paul swed wrote: Rich indeed its on the air. Warming up the FS700 to see if it will lock. Have a pattern ram thats getting flakey and takes about 30 minutes to warm up along with the oven. ___ 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] Loran again
Fired up the SRS FS700 and auto found the GRI 89700 microsecond stations in Dana Il (master) and Seneca NY, (slave) both with equal signal strength of 63 db. Other slaves were not to be found. Noise margin of 32 dB and Rx gain of 72dB. So the Rx is all locked up. Tomorrow I will have more data comparing the 10 MHz from the T'Bolt. Right now they are comparing to within 10EE10. Stan, W1LE Cape Cod On 1/31/2013 10:44 PM, Stan, W1LE wrote: What GRI should we be listening for ? Stan, W1LECape Cod FN41sr On 1/31/2013 9:56 PM, paul swed wrote: Rich indeed its on the air. Warming up the FS700 to see if it will lock. Have a pattern ram thats getting flakey and takes about 30 minutes to warm up along with the oven. ___ 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] Needed: The Real Serial USB Fix
Hello The Net: Yes, I have had the mouse problem, but the more serious issue is when I run multiple (3) instances of Lady Heather (latest version at KE5FX) and after awhile none of the times agree and the problem only gets worse with time. I have tried the multiple USB to RS232 adapters into motherboard USB ports and I have tried a multi USB port PCI card. Any solutions with this problem ? Stan, W1LECape CodFN41sr ___ 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, looking for a good science forum
I like the idea of a amateur microscopy nuts reflector. After a warm day, my bees took their cleansing flights and I collected some of their poop to look for parasites. Did not find anything moving at 500x , like tracheal mites or their parts, but I did find a lot of undigested pollen. I have not found a reflector for my microscopy interests. Stan, W1LE On 1/26/2013 5:45 PM, David Kirkby wrote: On 26 January 2013 18:31, DARRELL ROBINSON darr...@shaw.ca wrote: I did a Google search and came across sciencenuts.org, but content was limited If you have no success, maybe science-nuts could be created. There would be at least two of us joining. Make that three. 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, looking for a good science forum
Thanks for the pointer. I am checking it out now. Stan On 1/26/2013 8:59 PM, J. Forster wrote: The Yahoo Microscope Group already exists with over 3700 members world wide, which forms a huge knowlege base, from biology to microelectronics. http://tech.groups.yahoo.com/group/Microscope/ Why re-invent the wheel? -John ___ 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] Lady Heather V3.10, ALARM: 4000
Hello The Net: Any idea what this alarm is ? It appreared, I got out of the application, I restarted, and no more alarm notification. Stan, W1LE ___ 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] GPS antenna in attic?
Or add vent pipe penetrations ~ 1.5 OD PVC pipe and put the GPS antenna on top of the pipe. Allows for vertical position variations. and the soft rubber gland allows for changes later. Had a new roof put on last year and I added 2 each of these plumbing vent type roof penetrations. Also added 6 each passive roof vents to keep the heat down, which could also be used for GPS antenna mounting and cable penetration. Neither roof vents nor the GPS antennas (~ at ridge line) are visible from the street. Stan, W1LE On 11/26/2012 9:22 AM, Scott McGrath wrote: Or install a frosted dome type skylight as a radome lights the attic and allows for better reception Sent from my iPhone On Nov 25, 2012, at 10:15 PM, J. Forster j...@quikus.com wrote: There are ways to do it w/o drilling holes. Most all houses have vent stacks for the plumbing, typically 3 or 4 inch cast iron or thick plastic. You can clamp a couple of feet of pipe onto one of those and run the wire to under an eve or through a gable end, adding a drip loop of course. But, if it were my house and I just wanted to discipline my local standard, I'd try the attic first. Among other things, you can get to the antenna w/o climbing on the roof! New England is not sunny CA. -John On Sun, Nov 25, 2012 at 8:50 AM, Peter Gottlieb n...@verizon.net wrote: I'm beginning to set up in my new house and planning where all my various antennas are going to go. Being a wood frame building, I was wondering if it was sufficient to simply mount my Thunderbolt GPS antenna high in the attic. It will work but it will be far from optimal. All you need to do is get a big drill bit and drill through the roof and put up an iron galvanized pipe. Put a pipe flange on the end and bolt the GPS antenna to that. You will need some metal flashing and roofing tar and then you will have a first class setup. You run the coax down the pipe. The timing antennas are pointed on top so snow falls off Chris Albertson Redondo Beach, California ___ 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] New wrist Watch
Hello The Net: I need to consider getting a new wrist watch, but I need a second hand and a digital display is unacceptable. What would you consider in the 150$ price range ? Would be nice to have state of the art accuracy with a lifetime battery and high reliability. Thanks, Stan, W1LE Cape CodFN41sr ___ 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] Modern motherboard with RS232 port
Hello The Net, For your consideration: The INTEL model DN2800mt ITX mother board uses a ATOM CPU and draws about 11 watts of AC power when configured as: (I have not measured DC power yet.) 30 GB OCZ Nocti mSATA solid state drive, WIN7 pro, 64 bit, USB keyboard and mouse APEX MI-0008 case. Also has: parallel port available on mother board, you extend to a connector RS232 serial port available on mother board, you extend to a connector a single DC power supply from 11 to 19 V DC. 1 each PCIe expansion port, I will use with a premium 4 channel sound card SATA ports available for HDD/SDD, USB ports are available, Motherboard sound, and Gigalan. I have not played with NTP, (yet), but it sounds like a decent time nut technical challenge. My application is for a remote site with only 13V DC power available from PV/batteries. Then use fiber ethernet to get off site. The INTEL website would have further details. Stan, W1LECape 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.
Re: [time-nuts] GPS and Rubidium frequency standards and noise question (newbie).
Hello Chris, You are on the right track. I have had the Trimble Thunderbolts (3 each) for about 5 years now. Just to be sure everything compares favorably I use Lady Heather PC software to monitor their performance (de KE5FX website) Stay tuned to this reflector, lotsa interesting discussions. For me, it all started when I needed better than 1 Hz accuracy to monitor the 137 KHz band for local experimental activity. the 10 MHz from the GPS/DO was the external reference to the HP-3336B synthesizer as a RF test signal to calibrate my RX (IC-706MK2 and a IC-703+) and PC soundcard. Spectrum Lab PC software has a provision to calibrate the PC soundcard, for greater accuracy, but you have to have a very accurate signal source. Then there are the FMT-Nuts, frequency measuring contest nuts, who are getting better than 1 milliHz frequency measurement accuracies on intercontinental (US) HF communications !! I was also doing LORAN-C receiving and could achieve Cesium accuracy, at least 2 orders of magnitude greater accuracy than a GPS/DO. But US/Canadian based LORAN went off the air, but it is still available in Europe. I do not know where you are located, so maybe LORAN has potential for you. AUSTRON made a variety of LORAN-C receivers, 2100F, 2100(R), 2000, etc Stanford Research Systems (SRS) also made the FS-700 Because they are useless in the US, pricing on Ebay has dropped. Stan, W1LECape Cod FN41sr On 6/3/2012 2:19 PM, Chris Wilson wrote: 03/06/2012 19:09 Thanks for the great replies! My immediate need is to check some used test equipment I have bought, a Racal dana 9908 counter and a Marconi 2019A signal generator. They don't agree with one another! I was going to get a Thunderbolt unit and PS, but my friend mentioning noise got me worried. I may have a play with some SDR gear and I know they can be locked to a standard i you have one. Longer term my aim is to have a play with microwaves, which is what this friend is into, and maybe he has a particular issue with noise with sort of multiplication he is using? The fact that a GPS reference can be always on and locked to a reference that someone else maintains, if I understand things correctly, if simplistically, appeals. I am happy to be guided though, and I suppose I could always get a different type later if the specific need arose, although I am not made of money ;) Thanks! ___ 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] FS700 antenna
The classical approach: Look at the spectrum and notch or filter out what is not wanted. The FS-700 does have a set of filters and a front panel LORAN output (w/gain) to monitor with a spectrum analyzer for filter settings. I like the AUSTRON model 2048 LF Multifilter, just like a 1X4 RF multicoupler with a series of 8 notch filters for ~70 thru 130 KHz, with a peak indicator and a spherics indicator light. Notch filters can be switch selected on the front or some are on the real panel. For intermittent signals like noises, the peak indicator lamp gets my attention. Stan, W1LE On 5/5/2012 7:23 AM, Poul-Henning Kamp wrote: In messageE95F2CE5F1BA47B0A959AE061D4B9677@athlon, Ulrich Bangert writes: The effect stopped to appear from the very moment when the antenna was put out of the house in a distance of abt 20 m. While the effect is still not completely understood there are at least 2 possible reasons: It is far more likely that you have a switch-mode power-supply in your house which wanders over the 80-120 kHz frequency band in a very noisy way. ___ 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] LORAN-C
Hello The Net: LORAN signals are still being received at a 89700 microsecond GRI. I concur with others that there is only one station transmitting the master(M) and the slave(X) signals. My SRS FS-700 Rx shows equal received signal strength for both signals. Reports indicate the transmitter is at the old Coast Guard LORAN engineering site at Wildwood NJ. Since I turned the equipment on last Sunday night, I have had continuous lock on the FS-700, Austron 2100, and a 2100F. Compared to the GPS/DO 10 MHz from the T'Bolt, I am getting accuracies to the mid -13s, as indicated on the FS-700 phase meter. Next step is to lock up the signal on an oscope, triggered by an accurate 11.148272 KHz signal ( reciprocal of 89700microsec). That way I should be able to see the pulses and the E-LORAN experimentation. My set up at home uses a 40' high delta loop antenna, 2 orthogonal loops terminated on the top with a 600 ohm resistor, a ARR preamplifier with battery at the antenna , a RG6 coax run to the shack, Astron 2084 multicoupler, then the receivers. 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.
Re: [time-nuts] LORAN-C
Hello PHK, I will use a HP-3336C with the station 10 MHz (GPS/DO) reference. Typo: trigger should really be 11.148272 Hz instead of KHz ! Stan, W1LE On 5/1/2012 11:27 AM, Poul-Henning Kamp wrote: In message1158.12.6.201.135.1335885236.squir...@popaccts.quikus.com, J. For ster writes: Next step is to lock up the signal on an oscope, triggered by an accurate 11.148272 KHz signal ( reciprocal of 89700microsec). A HP5359A is great trigger-source for that. ___ 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] LORAN-C
Hello PHK, Thanks for the tips. I have not done this yet, so I am creeping along. I also have a 33120A with the the option 001 for using an external reference. Sounds like the arbitrary signal capability is the way to go, If I can not find an appropriate 2100/2100F output. Thanks Stan, W1LE Cape Cod On 5/1/2012 12:02 PM, Poul-Henning Kamp wrote: In message4fa006e8.5040...@verizon.net, Stan, W1LE writes: I will use a HP-3336C with the station 10 MHz (GPS/DO) reference. Typo: trigger should really be 11.148272 Hz instead of KHz ! You need a really amazing stable and noise-free trigger to lock onto a 5.5Hz (see below) sine at the required level of stability (~2usec). I used my HP33120A once, but its square output is made with a comparator on the sine wave, and has pretty bad jitter. Switching to saw-tooth solved that, defining my own arbitrary square-wave was even better, not sure why. You want 1/(2*.089700) = 5.574136 Hz, otherwise every other loran-c pulse will cancel out due to the A/B coding polarity. If you don't have a counter-based signal generator, consider stealing a GRI or FRI-rate signal from one of your loran-C receivers, I belive the AUSTRON 2000/2100 offers it on a BNC at the backside. ___ 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] Loran C back on
Rich, Thanks for the heads up. I will turn stuff back on. Stan, W1LE Cape Cod FN41sr On 4/29/2012 8:26 PM, Rich and Marcia Putz wrote: Hi all; Receiving Wildwood NJ GRI 8970 here in northern Indiana again today. FYI Rich ___ 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] LORAN-C at MIT
The young fellow in the white truck quoted me a price for the FS700 as 100$. My main interest was the ovenized 10 MHz source inside. I did not see the simulator. That would of tweaked my interest... I strolled on, looking for the food vendor Stan, W1LECape Cod On 4/15/2012 3:52 PM, J. Forster wrote: Some did. Possibly not all. I know a local time nut who bought one. There was some other, older, Austron stuff (2 pieces) that had not sold by about noon. Before you ask, I do not know the seller. - FWIW, I asked about the price early on. He didn't know and was playing on eBay with his iPoo to get a price. I told him LORAN was defunct and he didn't seem to believe me, so I voted with my feet and shopped elsewhere. At that time he had 3 2100Fs in a 4 or 5 foot rack in a box truck, plus some loose stuff. -John === Silly thought, but do you know if the 2100F units sold or not. I'm interested at that price as Loran still good in UK (plus I used to sell these when I worked for Austron, and would be nice to actually own one). Rob Kimberley -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of J. Forster Sent: 15 April 2012 19:41 To: time-nuts@febo.com Subject: [time-nuts] LORAN-C at MIT At the MIT Flea today, I saw 4x Austron 2100Fs for about $25 each. There was also a LORAN-C simulator and a Stanford LORAN-C unit for $200. Seems the stuff is hitting the skids. -John ___ 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.
Re: [time-nuts] pc loran c program
A google search shows: http://www.coaa.co.uk/ndbfinder.htm I will try it later this evening when I get back home... Stan, W1LE Cape Cod On 3/28/2012 8:53 AM, paul swed wrote: Never heard of one. Generally its a hardware decode On Wed, Mar 28, 2012 at 7:17 AM, Bill Richesbill.ric...@verizon.netwrote: Are there any pc programs that can decode Loran C id's? 73, Bill, WA2DVU Cape May, NJH ___ 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] pc loran c program
Thanks for the pointer. The DF6NM Grabber shows the active GRIs: http://www.alice-dsl.net/df6nm/LoranView/LoranGrabber.htm Interesting he calls 89700 as Wildwood vice Dana or Seneca. Stan, W1LE On 3/28/2012 11:45 AM, ALAN MELIA wrote: Peter Martinez G3PLX wrote some software which I think used GPS 1pps sync to receive Canadian eastern stations in the UK and monitor variations in time of arrival.I dont know that it produces IDs I belive that was derived from the GRIs.I think )Peter named the technique clicklock and several others added embellishments. I used one of these for measuring Loran-C sidebands as heard way up on 136kHz (an amateur radio band in Europe and the rest of the World) Peter lost interest in this and moved on, but copies may still be floating around o the web. Markus Vester DF6NM runs a site that observes and records Loran transmissions worldwide. I dont have the URL in this PC but a google of his name and call + loran should yield something. I believe Markus's program is feely available for amateur use. Alan G3NYK --- On Wed, 28/3/12, Stan, W1LEstanw...@verizon.net wrote: From: Stan, W1LEstanw...@verizon.net Subject: Re: [time-nuts] pc loran c program To: Discussion of precise time and frequency measurementtime-nuts@febo.com Date: Wednesday, 28 March, 2012, 15:45 A google search shows: http://www.coaa.co.uk/ndbfinder.htm I will try it later this evening when I get back home... Stan, W1LE Cape Cod On 3/28/2012 8:53 AM, paul swed wrote: Never heard of one. Generally its a hardware decode On Wed, Mar 28, 2012 at 7:17 AM, Bill Richesbill.ric...@verizon.netwrote: Are there any pc programs that can decode Loran C id's? 73, Bill, WA2DVU Cape May, NJH ___ 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.
Re: [time-nuts] Loran Signals
Rich, Thanks for the update. I suspect the GRI rates are part of a receiver's firmware look up table, which led me astray. Stan, W1LE Cape Cod On 3/28/2012 9:52 PM, Rich and Marcia Putz wrote: Hi all; I exchanged an email with a gentleman from UrsaNav and he indicated that transmissions were eminating(sic) from Wilwood NJ and that they were dual rated to look like Dana and Seneca. This explains why the signals level are much lower than they were here in Indiana then when Dana was on the air. And as the article stated he also mentioned different modulation schemes that may not be able to be locked to by conventional receivers,ie. FS-700s 2100Fs. UrsaNav does offer their SDR receivers that will recover the appropriate timing information, we shall see where this leads. Regards; Rich ___ 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] LORAN C on at 0845 EST
Was receiving 89700 microsecond GRI last night, but RF has dropped out now. Tried to copy the NJ station possibly on 99300 or 99600 GRIs, but no copy/lock here. Will continue to search. Stan, W1LECape Cod FN41sr On 3/27/2012 8:50 AM, paul swed wrote: ___ 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] LORAN C on at 0845 EST
89700 GRI is locked up nicely on the FS700. The Austrons are still searching for 99300 and 99600, the old Wildwood, NJ GRIs, no lock yet. Plan it to hook up a scope and monitor the wave form for the reported eLORAN info. Will continue to monitor. Stan, W1LE Cape Cod On 3/27/2012 9:18 AM, paul swed wrote: Also note that at times the freq accuracy goes out of whack. This may be due to some modulation behavior and the SRS reaction to it. Very clearly they shut the system down. Its not a guaranteed 24 X 7 at all. Weekends are off. On Tue, Mar 27, 2012 at 9:06 AM, Stan, W1LEstanw...@verizon.net wrote: Was receiving 89700 microsecond GRI last night, but RF has dropped out now. Tried to copy the NJ station possibly on 99300 or 99600 GRIs, but no copy/lock here. Will continue to search. Stan, W1LECape Cod FN41sr On 3/27/2012 8:50 AM, paul swed wrote: __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://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-nutshttps://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.
Re: [time-nuts] LORAN C 89700 dropped carriers at 1615 EST after a solid 3 days
Interesting. My FS700 also automatically reacquired. But the Austron 2100 and 2100F had to be manually reset to acquire again, after the short outage. How did you determine there was a short lived other station in the chain ? Other than manually going to the screen that shows the additional activity ? I was not able to hear/lock onto 99600 nor 99300 GRIs, (possibly Wildwood, NJ). Are there any others I should listen for ? Stan, W1LE Cape Cod On 3/22/2012 4:55 PM, paul swed wrote: More interestingly the FS700 reacquired automatically! Never seen that before. On Thu, Mar 22, 2012 at 4:53 PM, paul swedpaulsw...@gmail.com wrote: Interesting just fired up a general coverage rcvr and LORAN C can be heard but not that strong. It does appear to be 89700 still as the austron is settling in quickly On Thu, Mar 22, 2012 at 4:49 PM, paul swedpaulsw...@gmail.com wrote: Best run yet, 3 solid days of operation and I was able to log various local references as compared to a HP3801 and Tbolt. Only 2 stations generally on the air. 89700 Master and X, but an unidentified one came up for a short bit in the 4th position Regards Paul WB8TSL ___ 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] Wednesday AM Update: LORAN-C Reception on Cape Cod
Don, you are absolutely correct, Dana is in Indiana and not Illinois. Austron offered a model 2084 LF Multicoupler, with 1 antenna input and 4 outputs. Could be AC or DC powered, with peak and spherics indicator lamps, and 8 each tunable notch filters from 70 thru 130 KHz that can be individually switched inline or out. I should be able to take the FS700 Loran-C (RF) front panel output, feed the multicoupler, then feed a Austron 2100F and the 2100 to monitor other GRIs. Just have to find my notes on how to set up the older RXs. I had lock onto 89700 microsecond GRI overnight and using the internal FS700 phase meter I got as low as 3E-13 for delta frequency between the Loran-C and the T'Bolt GPS/DO. I am locked onto the Seneca, NY station. Stan, W1LECape Cod FN41sr If I am not mistaken Dana is not in Illinois it is in Indiana. Still receiving at 2200 hrs local. Don _ ___ 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] LORAN-C Reception on Cape Cod
Hello The Net: (especially the LORAN-C listeners) Right now my SRS FS700 Loran-C receiver is locked onto a signal. GRI 89700 microseconds station: AUTO (M) location: DANA, IL USA Receiver locked Tracking Loran-C signal Receiver gain: 77dB Noise margin: 39 dB Loran Freq offset: -1.1E-10 Phase: -17.9 deg Stations found: (ident: Amp in dB) M59* X56 Time since lock: 0:21:40 ( had lock overnight, but with an error so I did a new search) Length last unlock: 0:10:42 Signal status: a r b n o I am using the standard SRS active whip antenna about 7' above ground in the back yard. Receiver firmware is 1.19 As time permits I will compare the Loran-C to the T'Bolt GPS/DO, with the Tracor 527E. It is nice to have Loran-C signal to play with. The Nantucket Loran-C station was a bout 40 miles away. Almost a Cs reference in my shack. Stan, W1LE Cape CodFN41sr XXXx ___ 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] LORAN-C Reception on Cape Cod
The Wildwood, NJ tech center could be part of the 9930 or the 9960 chains. It was only sporadically on. As testing dictated, not a normal operation site. I have not listened to these GRIs. I hope to configure to use the single antenna with multiple Loran-C receives. Have to ponder that action Difficulty is that one receiver has to be dedicated to a single GRI. 89700 (microsecond GRI) is till coming in with Dana, IL as master and Seneca, NY as the X slave. Stan, W1LECape Cod On 3/20/2012 4:09 PM, Bill Riches wrote: Seems that Cape May NJ is on also - is that part of the chain? 73, Bill WA2DVU ___ 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] military frequency standard pin out??
Good Morning Paul, Sounds like a very old military unit. Probably 60's vintage. before the 13 digit NSNs. national stock number (NSN) is probably 6625-078-4718. I do not recall what the 2N could mean. a modern NSN would look like 6625-00-078-4718 or 6625-01-078-4718 Stan, W1LE on Cape Cod On 3/7/2012 10:45 AM, Paul A. Cianciolo wrote: Hello Folks, I found in my collection a frequency standard that I acquired mil surplus at one time. The model number of 2N6625-078-4718 internet search yields nothing on this number. The unit is a common looking one , approx. 4 x 3 x 4 with an aluminum cover that comes off. The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector. It appears 3 pins for power 1 is ground that easy to see but the others are 2) a red white and black that leads to the circuit board 3) and a brown white and black also leads to the circuit board. I would like to fire this up, but not burn it up. Any ideas? Thank you Paul A. Cianciolo W1VLF http://www.rescueelectronics.com/ Our business computer network is powered exclusively by solar and wind power. Converting Photons to Electrons for over 20 years ___ 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] Morion MV89 output level?
Would it be better to apply heat the metal shell or to apply heat the bottom part with the I/O pins ? I would start using a propane gas torch. Heating quickly till I saw the solder flow. Stan, W1LECape Cod On 2/9/2012 6:04 AM, Azelio Boriani wrote: Don't be afraid and open up your MV89. I have done this with many MV201 without problems. ___ 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] US Army Frequency Standard
Possibly tuning up the mechanicals of a teletype set. Stan, W1LE On 1/24/2012 4:59 PM, John Howell wrote: Hi All, I recently obtained a curious Low Frequency Standard dating from the late 1950s. Its output can be switched to a number of frequencies from 10 to 190Hz, derived from a tuning fork. It is marked Signal Corps and US Army with a type number TS-65D/FMQ-1. Does anyone have any information about this unit, in particular what it was used for and why the strange negative going pulse output and specific frequencies. Thanks in advance, John H. ___ 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] HP5384A Freq Counter
Hello Rob and The Net: I like my HP-5384A and use it with a external 10 MHz reference from my T'Bolt. At a 10 second gate I can get 11 digits displayed, at 1 sec gate I get 10 digits displayed. The LCD is NOT back lit. Good to 225 MHz.With HPIB. It will operate off of a external 9-15 VDC, in place of the AC power. I also like the FLUKE PM6685/016.I use a external 10 MHz reference. LCD is backlit, GPIB, resolution to 12 digits displayed, with 2 MSBs truncated as overflow, with a 10 second gate. Longer chassis than the HP. The PM6685 comes in a Rb version for internal reference. The HP was 100$ and the FLUKE was 300$ Original goal was a HP-53132 or a SRS 620, but today they are tooo pricey for me. Stan, W1LE on Cape CodFN41sr On 1/18/2012 5:45 AM, Rob Kimberley wrote: I've seen one of these advertised, and wanted to know if any fellow Nuts had any experience. Thanks Rob Kimberley ___ 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] NavSymm - Ericsson GPS Timing Receiver
Hello Al, I hope you and yours have a Happy New Year. I would start with the radome removal. Were those screws or pop rivets on the edges ? Hopefully our UK members can assist with documentation. Stan, W1LE Cape Cod On 12/30/2011 6:54 AM, Alberto di Bene wrote: I received as a gift from a friend what looks like a timing GPS antenna integrated with the receiver, with optical links for Rx and Tx (?). This the label on the box : http://dl.dropbox.com/u/15089947/NavSymm2.jpg And these are the upper and lower sides of the unit : http://dl.dropbox.com/u/15089947/NavSymm3.jpg http://dl.dropbox.com/u/15089947/NavSymm1.jpg Does anybody perhaps have a bit more information on this GPS receiver, and possibly suggest a practical use ? For example, would it be feasible to open the unit and recover maybe the 1pps signal, and some sort of data strings ? TIA 73 Alberto I2PHD ___ 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] Thunderbolt?
Looks to be a reasonable solution. Not spectacular, cost wise . just reasonable. Plug and play with multivoltage PS, active antenna, and T'Bolt. All you will need is Lady Heather to whip things into shape. Stan, W1LE Cape Cod On 12/28/2011 7:50 PM, Peter Gottlieb wrote: I am interested in increasing my lab accuracy from the Rb units by using a Thunderbolt. I see kits advertised on feebay, such as http://www.ebay.com/itm/270515147719 and I was wondering if this was a good choice. I would certainly have to get a compatible antenna anyhow, and the power supply keeps me from having to dig through my storage to find one. Is this a decent way to get set up or are there better/cheaper ways? TIA, Peter ___ 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] Thunderbolt?
Looks to be a reasonable solution. Not spectacular, cost wise . just reasonable. Plug and play with multivoltage PS, active antenna, and T'Bolt. All you will need is Lady Heather to whip things into shape. Stan, W1LE Cape Cod On 12/28/2011 7:50 PM, Peter Gottlieb wrote: I am interested in increasing my lab accuracy from the Rb units by using a Thunderbolt. I see kits advertised on feebay, such as http://www.ebay.com/itm/270515147719 and I was wondering if this was a good choice. I would certainly have to get a compatible antenna anyhow, and the power supply keeps me from having to dig through my storage to find one. Is this a decent way to get set up or are there better/cheaper ways? TIA, Peter ___ 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] PCMCIA GPIB Board and cable FS
Hello Paul, I hope you and yours have the very best of this holiday season. After I got my Prologix USB/GPIB adaper, I let go all of my other gpib adapters. I have not looked back Stan, W1LE on Cape Cod On 12/7/2011 11:52 AM, Paul A. Cianciolo wrote: Folks, I have a National Instruments PCMCIA GPIB card that I have been using with TimeLab on my ACER laptop. With the addition of the Prologix USP/GPIB I no longer need the PCMCIA. Drivers are free down load on the NI site. Let me know if there is any interest. PauLC W1VLF ___ 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] Cambrideg Thermionics Freq Measurements...
Hello The Net: The frequency measurement division broke off, but was still in Cambridge in ~2007. I got a call from them about a 19 KHz pilot tone generator that was off freq at a FM/NCE station on Cape Cod. After replacing the Optimod ($100) xtal, all was fine. I will eventually think of that organizations name, but for now the POC was Richard. Yes, his techniques were cryptic, but I doubt if his techniques exceeded the capability of any time or freq nut's capability. I would start with a search at SBE for such freq measurement organizations. Stan, W1LE Cape CodFN41sr On 10/15/2011 10:57 AM, J. Forster wrote: Cambridge Thermionic was on Concord Ave, just east of the Fresh Pond circle. The building is now a storage warehouse. They were mostly making screw-machine components by the early 60s. They had a vast array of stake-in terminals and similar stuff. Very good product, IMO. You could get damn near anything you could imagine in terminals from them, uninsulated and insulated. They also made a bunch of other electronic hardware like coil forms. Again, very good quality. The other thing they made was thermoelectric heat pumps and products using them, like small ice bath references for thermocouples. I suspect this was related to their expertise with ceramic-metal attachment. At some point (70s? 80s? 90s?) they moved someplace else and changed their name to Cambion. Best, -John Les, I do sort of remember Cambridge Thermionics. I came across their name back in the late 60's or early 70's when I first got in the frequency measurement business. I think I also remember seeing their name as a parts supplier in some WW-2 military radio manuals. Burt From: Lester Veenstrales...@veenstras.com Bert: I wonder if you happen to remember a company called Cambridge Thermionics. Located in Cambridge MA, they made ceramic slug tuned coil s but in one corner was an individual with the off air frequency measuring service. As a duty engineer up the read at WCOP in Lexington, I frequently would get calls from him to tick a dummy plug in the modulator input patch (turning the board gain down was too much residual noise), so he could measure us, and more often, to remove the carrier for a few seconds so you could measure some one co-channel. He never wanted to talk about how it did it, and absolute would not accept visitors who might learn his dark trade secrets. I had assumed that these days a GPSDO would remove the need for the monthly freq service but I guess not. I stood my last midwatch at COP and reported to the Boston Army station for induction into the USN the next morning. 73 Les Burt I. Weiner Associates Broadcast Technical Services Glendale, California U.S.A. b...@att.net www.biwa.cc K6OQK ___ 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.
Re: [time-nuts] Active LORAN antenna
Hello Ulrich, There are 13 each, double pages of schematics for the FS700. Most of my pages are marked up. When I got the manual, before I had the hardware, I read it thru and I highlighted each adjustment in the circuit to get a better understanding. Not much of a plot, but a pretty good story. If you need a specific page, I can scan each 1/2 page and you can paste together on receipt. All I have is a simple A size Cannon scanner, but I can scan to high resolution. The other alternative is to get a new manual from Stanford Research Systems for ~ 35$ Shipping may be a killer. Please advise. Stan, W1LE Cape CodFN41sr On 8/31/2011 6:53 AM, Ulrich Bangert wrote: Gentlemen, I would like to thank you all for your help in this affair. In the meantime we have both built the antenna according Stan's circuit and it seems to perform well. It seems however that the antenna needs to be put a bit away from the receiver itself because otherwise some kind of self-oscillation is observed. ___ 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] Active LORAN antenna
Hello UL, My SRS active antenna is internally potted in resin, so tracing the circuit is difficult. I was able to chip away the PVC white housing and some of the black potting material to get at the antenna input terminal. Then I repackaged it with a new CB antenna. Living on Cape Cod, quite near to the former Nantucket Loran station, I can only rarely receive some of the European stations. The schematic in the manual shows a switch or a jumper for the gain reduction. So, the schematic is probably an old version, and all bets are off as to what the production models, we have, consist of. I did buy the manual form SRS and the active antenna schematic shows a 2N5951, not the 2N5991 you mention. My schematic is a rev B, Document Number FS700-14 This document in not dated. The frequency selective L-C filter network is different, see attachment. If the attachment does not get thru, please send your direct e-mail address. Stan, W1LE Cape CodFN41sr On 8/26/2011 6:00 AM, Ulrich Bangert wrote: Gentlemen, my friend Frank and I both miss the matching actice antenna for our Standford Research FS700 Loran frequency standards. We also do not have a schematic of it. Nevertheless we have tried to re-engineer the circut from the part's list and the circuit description in the FS700 manual. Our result is shown in the accompanying schematic.pdf. The generator in the left in conjunction with the 10 k resistor represents the expected high footpoint impedance of the very short (3 m) antenna. The VDD in the right in conjunction with the 100 ohms resistor represents what it believed to be inside the FS700. Not shown here is a 100 k resistor that may be included between the filter output and the 7 k resistor to form a 30 dB divider together with it. Also not shown is a 390 micro henry inductance which's impact is not to be found in the circuit descripion. Also not shown is a small neon bulb for overvoltage protection. The ac analysis shows that the overall filter function is well around 100 kHz. But it seems as if the fet (a 2N5991 in the original) would not have enough gain to counteract the overall damping included in the front end let alone to deliver some additional gain for the receiver's front end. We both feed the receiver currently with dipoles for 80 m ham radio and a resistor that makes the receiver think the active antenna is connected. The receiver has a possible total of 130 dB gain and my receiver says it uses 94 dB gain while Franks receiver says it uses 102 dB gain. The noise margin is also a bit better on my location. However, if one looks at the manual f.e. at page 17 one could get the impression as if a receiver gain of 75 dB may be considered much more normal as our values. Instead of improving the reception everything gets even worse if the active antenna is connected. I should also note that my qth is only 200 km away from SYLT (our German Loran station) while Frank is even 70 km nearer to it. Questions: 1) Anyone an idea what we are possibly doing wrong? 2) Anyone an idea for the 390 micro henry inductor? 3) Anyone own the original schematic? TIA for your help Ulrich Bangert www.ulrich-bangert.de Ortholzer Weg 1 27243 Gross Ippener ___ 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. attachment: FS700 Active Antenna0050.jpg___ 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] TEK P6430 temp probes are available
Hello The net: For use with your Tektronix thermometer/temperature monitor: 5 each TEK 010-6430-00, P6430 Temp Probe, Status: unknown, found in my garage when cleaning out. Looks like a scope probe with a LEMO connector on one end. For postage to you, otherwise Free, first come first served. For use when you are monitoring the temp of your xtal oven. Stan, W1LE Cape Cod ___ 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] TEK P6430 temp probes are available
Thanks for the interest. 5 each are spoken for. Stan On 6/1/2011 8:48 PM, Stan, W1LE wrote: Hello The net: For use with your Tektronix thermometer/temperature monitor: 5 each TEK 010-6430-00, P6430 Temp Probe, Status: unknown, found in my garage when cleaning out. Looks like a scope probe with a LEMO connector on one end. For postage to you, otherwise Free, first come first served. For use when you are monitoring the temp of your xtal oven. Stan, W1LE Cape Cod ___ 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] Another mystery Wenzel OCXO
Dan, I have been watching these for awhile, for a potential propagation beacon on 6M. My project has not reached critical mass yet. Some speculation: The +12VDC DC power connection and GND are the input power for the oscillator and the oven. One coaxial connector is the output at RF, 50 MHz. One coaxial connector is the input VCO tuning voltage ~ 5 VDC, (either +/- 5VDC or 0 to + 5 VDC). The other coaxial connector may be for a oven monitor output signal, either a analog signal for oven temp or oven ON/OFF status. But I have no idea which female SMA does what. If you find out the details, please advise us all. Stan, W1LE Cape CodFN14sr On 5/28/2011 2:18 PM, Dan Rae wrote: I found today at the swap meet some nice looking Wenzel OCXOs. Pictures can be found at item 180511097522 on eBay, although his description is incorrect, they certainly are not Voltage controlled, and do they have any means of adjusting the frequency. They have a strong similarity in appearance to the Wenzel ULN series, but have no trimmer and do have the three +7 dBm SMA outputs. I have never had any luck in getting data on any of their 500 series units but hoped that someone might know something? Dan ___ 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] smallest rubidium
I also top post... Consider the Symmetricom model X72 Rb. I can fit 2 each in my shirt pocket. Some variants are programmable and spec'd for 12 VDC operation. I did have problems with one unit that had microphonics when used with a DEMI/N5AC microwave LO synthesizer in a DEMI 10 GHz transverter. For a 20 MHz reference used in a HF transceiver I would consider a ISO Temp TC/VCXO at 10 MHz and double it with suitable filtering. Provide a pot to easily net it as well as a additional 10/20 MHz output to feed the counter. The ISOTemps have been going for 30-50$, so it is a cost effective solution and it may be stable enough for any HF operation. If used with a transverter, you will still have to fight that LO drift. Unless it is synchronized with the 10/20 MHz reference. Stan, W1LECape CodFN41sr On 5/23/2011 11:36 AM, Mike Feher wrote: For what it is worth, I agree 100%. I have also been top posting for over 30 years. A lot of times when I open a thread, and, do not see anything but previous posts, I delete the whole thing. Why should I go all the way to the bottom to see what someone may have said, or, to even see if there is something there. Unfortunately, I probably miss out on some good info this way, but, I do not have the patience to sort through it all. If I have been following the threads then I know what has been said anyway. If I have not, the latest top reply might peak my interest. Another thing that really annoys me is when people comment inside of a previous post, about every paragraph/sentence or so. Most of the time it is difficult to tell what was the previous post and when the new response begins. Just put it all on top. Regards - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Rob Kimberley Sent: Monday, May 23, 2011 9:30 AM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] smallest rubidium I couldn't resist commenting about how top posting annoys you. Interestingly, I have always top posted ever since my first email way, way back. Everyone else I dealt with in business did it that way. It wasn't until I got involved with groups like this, that it apparently became a problem. It always seemed logical to me to have the answers to a question at the top i.e. the most recent comment in the chain. No doubt I'll get a lot of replies both top and bottom about this... :-) RK ___ 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] What are these towers?
1. Towers are painted so they may be over 200' tall. 2. Two different tower height variations, 2 each shorter and 9 each taller.. 3. Interesting symmetry between the shorter and taller towers. 3. In a congested residential area. Probably too noisy for a Rx site. 4. Gated entry on asphalt driveway. I can not see if the fence has tiered barbed wire on the top. 5. Some kind of phased array of verticals, maybe MW (AM band) thru HF 6. Maybe commercial, unattended TX remote site, no vehicles in sight in the antenna filed. 7. Interesting shadow, must have been taken ~ local noon time. 8. Maybe a gov radio site. Stan, W1LE On 5/20/2011 5:54 PM, Jason Rabel wrote: 29° 59' 34N, 95° 28' 24W ___ 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] USB and Mouse conflict persists
Hello Joop, Thanks for the pointer. I am slowly achieving the confidence to tackle my XP Pro registry. Stan, W1LE On 5/12/2011 4:12 AM, Joop wrote: quote: [On the tab Port Settings click Advanced and in that window uncheck the box next to Serial Enumerator] This is a feature of the FTDI driver. Not something generic. What worked for me was to disable (postpone actually) the Windows PnP device enumerator for a serial device. It works for hardware serial ports as well as the USBtoRS232 converters. This can be done with a registry patch which adds the Skipenumerations registry entry. Setting this to a big value skips the possible detection of any device (such as a serial mouse) on a COM port. Search the net for details. E.g. here : http://support.microsoft.com/default.aspx?scid=kb;en-us;283063 Lots of the USBtoRS232 converters do not contain EEPROM to store a unique serial number. Without it Windows cannot be sure you unplugged the same device as you re-plugged in another USB port. Its behaviour is to assign it a new COM port number. Re-plugging the converter in the original USB port should bring back the same COM port number. You will need to patch the registry again if a new COM port number is assigned. If you want to avoid this, look for USBtoRS232 converters that have the option to program a USB serial number (like the FTDI FT232R based ones) Joop - pe1cqp ___ 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] USB and Mouse conflict persists
Hello The Net: Since my motherboard died, I want to transfer the T'Bolt to another computer. I am running XP Pro with a USB laser mouse and a USB to serial adapter to the T'Bolt. The USB to serial adapter drivers are on hand and they loaded nicely, with the computer setting the USB port to COM10. System worked fine with Lady Heather on the original computer. I tried using the mod to theboot.ini file.I added: NoSerialMice:COM10 on the very first line. To date I still have a conflict with the mouse I can move the COM port assignment for the adapter, but I can not find what COM port the mouse is using. The mouse does use IRQ 12. USBView software does show which USB ports are used, but not the mouse COM port assignment. How do I fix (permanently assign) the Com port used for the mouse, so there is no conflict ? Thanks for the help, Stan, W1LE Cape CodFN41sr Zz ___ 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] USB and Mouse conflict persists
Hello David, The symptoms include: eratic mouse cursor that stabilizes (corrects) after I disconnect the USB port to the T'Bolt. Stan, W1LE On 5/11/2011 9:02 AM, David J Taylor wrote: Hello The Net: Since my motherboard died, I want to transfer the T'Bolt to another computer. I am running XP Pro with a USB laser mouse and a USB to serial adapter to the T'Bolt. The USB to serial adapter drivers are on hand and they loaded nicely, with the computer setting the USB port to COM10. System worked fine with Lady Heather on the original computer. I tried using the mod to theboot.ini file.I added: NoSerialMice:COM10 on the very first line. To date I still have a conflict with the mouse I can move the COM port assignment for the adapter, but I can not find what COM port the mouse is using. The mouse does use IRQ 12. USBView software does show which USB ports are used, but not the mouse COM port assignment. How do I fix (permanently assign) the Com port used for the mouse, so there is no conflict ? Thanks for the help, Stan, W1LE Cape CodFN41sr Stan, A USB mouse does not use any COM ports. What are the exact symptoms you are seeing? 73, David - GM8ARV ___ 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] USB and Mouse conflict persists
Hello James, Is there some way to permanently assign an IRQ and to provide me some visibility on which IRQs are assigned and where ? Stan, W1LE On 5/11/2011 9:03 AM, James Fournier wrote: A USB device doesn't use a COM port. More likely it's an IRQ conflict between the devices. Try removing the COM port adapter, reboot, and then plug it back in to a different USB port. This should cause the computer do dynamically assign a non-conflicting IRQ address. Regards, James ___ 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] USB and Mouse conflict persists
Hello Chris, Thanks for the pointers. They were an interesting read. My cheapie USB to serial adapters use a Prolific chip. Stan, W1LE On 5/11/2011 9:59 AM, Christian Vogel wrote: Hi Stan, I am running XP Pro with a USB laser mouse and a USB to serial adapter to the T'Bolt. The USB to serial adapter drivers are on hand and they loaded nicely, with the computer setting the USB port to COM10. if your adapter uses one of the popular FT232 chips from FTDI, then your mouse will be rediscovered from time to time, thanks for the Serial Enumerator feature present in the driver (see http://www.ftdichip.com/Documents/AppNotes/AN_107_AdvancedDriverOptions_AN_73.pdf ). To disable this incredibly frustrating function, open the windows device manager and remove the serial mouse. Then open the properties of the serial COM port. On the tab Port Settings click Advanced and in that window uncheck the box next to Serial Enumerator. http://lh5.ggpht.com/_zKkNaqX3vkM/S-mRNIaXuoI/Aw8/W6mWXYShUC8/s1600-h/serial-properties%5B2%5D.png You'll have to repeat this whenever your USB-to-serial adapter is re-discovered, for example when you've moved it to a different USB port on your machine. Greetings, Chris ___ 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] USB and Mouse conflict persists
Hello Mike, Thanks for the help. Stan, W1LE On 5/11/2011 10:21 AM, Michael Perrett wrote: Stan; I had the same problem. The correct fix (i.e. permanent) is to buy a RS232C plug-in board for your PC. This allows the port choice to remain fixed. With the USB to serial adapter the port can change every time you reboot the computer. I purchased a board with 8 db9 connector 'dongles', this allowed me to have unique port IDs for all the RS232C devices that I have afixed to the computer. Michael ___ 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] USB and Mouse conflict persists
Hello Ed, Thanks for the definitive Microsoft reference. I was wondering why NoSerialMice seemed to have no effect. Stan, W1LE On 5/11/2011 11:01 AM, Ed Palmer wrote: Hi Stan, According to Microsoft (who should know), NoSerialMice has never worked with XP. It's for NT. For XP use /fastdetect:COM10 or just /fastdetect to handle all com ports. See: http://support.microsoft.com/kb/833721 Ed Stan, W1LE wrote: Hello The Net: Since my motherboard died, I want to transfer the T'Bolt to another computer. I am running XP Pro with a USB laser mouse and a USB to serial adapter to the T'Bolt. The USB to serial adapter drivers are on hand and they loaded nicely, with the computer setting the USB port to COM10. System worked fine with Lady Heather on the original computer. I tried using the mod to theboot.ini file.I added: NoSerialMice:COM10 on the very first line. To date I still have a conflict with the mouse I can move the COM port assignment for the adapter, but I can not find what COM port the mouse is using. The mouse does use IRQ 12. USBView software does show which USB ports are used, but not the mouse COM port assignment. How do I fix (permanently assign) the Com port used for the mouse, so there is no conflict ? Thanks for the help, Stan, W1LE Cape CodFN41sr Zz ___ 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] Resolved: USB and Mouse conflict persists
Hello The Net: Thanks for all of the timely pointers. The problem with XP Pro has been resolved. My serial to USB adapter uses the Prolific chip. As indicated under device manager. After plugging in the T'bolt to the adapter and into a computer USB port, Device manager, under mice and other pointing devices showed an active Microsoft serial ballpoint As suggested I left clicked and DISABLED it vs. deinstalling it. Control over the mouse cursor returned to normal operation. Adding a external USB hub by itself, had no adverse effects. Adding a T'Bolt and adapter to the external hub had no adverse effects adding a second T'Bolt did have a problem. but the ballpoint device was then DISABLED. Adding a third T'Bolt to the external hub had no adverse effects. Adding a cheapie Bluetooth USB adapter had no adverse effects. Adding and pairing a Bluetooth mouse and keyboard had no adverse effects. Under device manager, USB ports, advanced, I changed the COM port assignment to COM10, 11, and 12. Lady Heather beta started up fine with their command line COM port assignments. The motherboard is an Intel D945GCLF2D with installed dual core Atom processor. (~80$) MicroATX. Total power draw is ~40 watts. Could be lowered a few watts even more, with a solid state hardrive. I only have 1 each PCI expansion slot and that is occupied by the M-Audio 4 channel 196 K sampled soundcard. Not the fastest CPU, but fast enough. and I have a DC power supply for it, to run off of +12VDC. I will go back into the boot.ini and delete the NoSerialMice entries. I will explore the /fastdetect:COMx command as well as the impact of not allowing plug and play accessories from the BIOS. That was last weekends project. Next project is to get the Agilent IO/drivers and their ARB waveform software working under serial control with a 33120A, option 001, that will use the T'Bolts 10 MHz as a reference. Thanks for all of the timely assistance. The pointers I got were a giant step ahead of what google found. Stan, W1LECape CodFN41sr 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.
Re: [time-nuts] BNC Question
Sorri, I must have been thinking type N connectors. Stan, W1LE On 4/9/2011 8:18 PM, brucekar...@aol.com wrote: Interestingly, 50 and 75-ohm BNC connectors have the same pin/shell dimensions and properly couple together. For more information go to _http://www.cliftonlaboratories.com/august_2007.htm_ (http://www.cliftonlaboratories.com/august_2007.htm) and scroll down to the 02 August 2007 entry. There is a link to the Amphenol site for specifics about the connectors. I am planning to use an Extron video distribution amplifier for standard frequency distribution. The 75-ohm connectors will be OK. These amplifiers feed multiple 75-ohm outputs from a zero-impedance source by inserting a 75-ohm resistor in each leg. Some folks using these for standard frequency distribution change the resistors to 50-ohms. Bruce, KG6OJI ___ 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] OysterQuartz Saga: Final Report
Hello The Net: My OysterQuartz has been resurrected and I am happy with the results. I appreciate everyone's response. I researched local watch repair facilities and found one in town. After finding the right person to talk to, who knew that the OysterQuartz really took a battery, I had him send it off to the expert in Boston for a battery replacement. Thanks for the pointers to the professional tooling to remove the back. After 2 weeks the watch came back, working quite well. The fee was 50$, mostly due to the effort to disassemble and reassemble the case. I had never considered it a bling, but I will agree, a bling it is. It was my personal entry into Time Nuttiness, decades ago. Watch manufacturer spec was +/- 30 seconds in a year. My original use was as a transfer standard from a AN/GSQ-53 (?) LF timing system that used a UK broadcast. A decent site for the history can be found at: http://oysterquartz.net/ The shop manual was interesting, identifying the battery part number as well as where the adjustments are. Interesting that the OysterQuartz is obsolete and has been out of production for 10+ years. The rumors of a new design OysterQuartz with a 10 year battery life were quite interesting. Thanks for all of the pointers and comments, Stan, W1LE Cape CodFN41sr 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] Tool Needed to Access my Timer Battery
Hello The Net: When I retired almost 2 decades ago, I put my wristwatch in a drawer and left it there. I was hoping to never have to use it again. Wishful thinking. Now I need it, but it does not work, battery is depleted. I need to open it up and replace the battery. Any idea how I get my Oysterquartz open. It does have a back cover, but is it a right handed or a left handed thread, and where can I find the best tool, without marring it ? Also, any idea what the battery part number is ? I should consider replacing the o-ring seal under the cover, any idea where to get one ? After I replace the battery, I hope to calibrate it, comparing it to my Trimble GPS/DO. Any help is appreciated. I had considered getting support from R-USA in NY, but previous support was horribly bad. 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.
Re: [time-nuts] Thunderbolt Supply
Hello The Net: Consider the HP-6235A triple power supply for a single T'Bolt. Consider a HP-6236B triple power supply. 0-6V to 2.5A 0 to +/-20V at 0.5A Can drive 2 each T'Bolts, but not optimally at a cold start. After the high cold start current draw, the +12V draw goes down nicely and then this PS can nicely support 2 each T'Bolts. Other have reported these as being quiet power suppklies. Ebay can be your friend. do a search for either model. Stan, W1LE Cape CodFN41sr ZZZz ___ 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] Hammond Boxes Available -
Hello Mike, Any boxes left ? I am looking for 2 each sent by mail to zip 02644. Thanks Stan, W1LE On 12/21/2010 1:51 PM, Mike Feher wrote: I have a quantity of NOS Hammond boxes available. These are model number 1598HBK. Mouser is the cheapest source for these that I found on a quick search. These are considerably larger than the hard drive enclosures previously discussed, and, these are also plastic with aluminum front and back plates. They still make excellent small project boxes. Here is the Mouser link, you can find others with better photos: http://www.mouser.com/ProductDetail/Hammond/1598HBK/?qs=3vio67wFuYpsW%252byy vIs3Bw%3D%3D My pricing is: 1 unit - $8.00 2 units - $15.00 4 units - $27.00 10 units - $60.00 Shipping will be extra, but only actual shipping cost, by your preferred method. Each box weighs 1 lb and 6 oz. Thanks Merry Christmas to all - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell ___ 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] Simple 5 to10MHz frequency doubler
Hello Luciano, Thanks for the info. The swept performance plots say it all. Could you suggest a part number/source for the T2, T3, T4 10.7 MHz IF transformers ? I hope you and yours are having then very best of this holiday season. Thanks Stan, W1LE Cape Cod On 12/27/2010 9:37 AM, Paramithiotti, Luciano Paolo S wrote: Here you can find a 10MHz LC filer with vna measurements. http://www.timeok.it/files/5to10doubler.pdf I hope to help someone. Luciano IZ5JHJ Luciano P. S. Paramithiotti ___ 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] LORAN C is good again tonight 90070
When you hook up the SRS FS700 to the antenna you can monitor the front panel LORAN output with a spectrum analyzer and determine what has to be notched out either in a separate multicoupler with high and low tunable notches like the Austron 2084 or the notch filters ( greater tuning range) built into the FS700. My internet search a few days ago shows Loop Head in Ireland was never built/commissioned. old mail: Good Morning Claude, I am assembling a K9AY terminated loop antenna, pointing to N. Europe. (~30 degrees) Will use a ARR preamplifier at the antenna. I hope to start listening later this month. Some stations to listen for: Lessay, France master on GRI 6731, Soustons France, slave X BO , master on 7001, Jan Mayen, slave X, Berlevag slave Y Sylt, on 7499, Lessay, slave X, Vaerlandet, slave Y Eidi (Ejde) on 9007 master, Jan Mayen slave W,BO slave X, Vaerlandet slave Y From my location on Cape Cod FN41sr, looks like the closest active chain is Eidi with GRI of 9007 Eidi, IP62lh DX of 2900.1 miles Jan Mayen, IQ50pv, 2900.2 miles Lessay, IN99fd at 3274.1 miles Soustons, IN93hr at 3412.4 miles, (6731 GRI) I have not calculated BO, and Berlevag details (7001 GRI) nor for the Sylt chain. A google search on Loran C stations will show a listing of the few active stations with the station details like RF power output and Lat/Long. I have converted Lat/Long to 6 digit grid locator for my ease in LOB and DX calculations with BD2004 software. Sky wave propagation should be possible for the North Atlantic, European, Western Russia, Saudi, and Mediterranean chains. Low likelihood of any ground wave and its better accuracies. I miss my Nantucket Loran-C station and its Cs accuracies. A modern Stanford Research Systems model FS700 Loran C receiver is on hand as the receiver. Stan, W1LE Cape Cod FN41sr On 12/22/2010 9:57 AM, paul swed wrote: Thats odd it says loop head Ireland not exactly the middle of the ocean. At least thats the closest station I can find. But that said I can get a frequency measurement but also at my very limit from what I can tell. I do want to look at the autron 2000 and SRS FS700. The 2000 lets you see things more easily and the SRS may have a better front end. Hard to say. I really have a local noise source thats causing trouble and not sure how I will find it. Regards ___ 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] LORAN C is good again tonight 90070
Hello Paul, go to: http://f6fvy.free.fr/qthLocator/ and play Stan, W1LE On 12/22/2010 10:00 AM, paul swed wrote: Hard to say if Faroe or Loop head is closer. Kindo of look about the same. It would be nice if google maps had a way to plot distance. ___ 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] Frequency counter recommendation
Hello Dave, Others will have better suggestions for the time interval measurement equipment. My suggestion is to consider the Prologix GPIB to USB adapter for ~150$ brand new stock. I wasted some time with a NI controller and an older HP adapter before I got the Prologix. I never looked back. Stan, W1LECape Cod On 12/15/2010 2:55 PM, Dave M wrote: I'd also like recommendation for a good low-cost GPIB controller that allows me to write software to control some of my instruments. ___ 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] Motorola VC-TCXO
I looked at them awhile and passed. For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external pot for fine tuning. So a search on Ebay. Stan, W1LE Cape Cod FN41sr On 12/13/2010 1:29 PM, Chris Albertson wrote: Has anyone seen or used these 10Mhz oscillators. $20 shipped seems a reasonable price. It's an un-used Motorola part. Maybe there is something better? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=280567398921ssPageName=STRK:MEWAX:IT I want to use them in a portable (battery powered) freq reference along with a chain of divide by 10 chips. I think at first I'll set it with a screw driver but I'd like to build an automatic feature using a microcontroller that syncs the portable reference to a lab oscillator that is running off GPS. My idea is that you connect it for a few minutes or over night. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Motorola VC-TCXO
My portable battery is 12V at ~15 amp hours. it is good for the weekend of a ham radio contest from Friday's calibration/tweaking thru Sunday night. The OCXO stays powered up all weekend on its dedicated battery. I do not have hot/cold current draw in front of me, but as I recall is 100-200 milliamperes. Stan, W1LE On 12/13/2010 2:18 PM, Chris Albertson wrote: On Mon, Dec 13, 2010 at 10:56 AM, Stan, W1LEstanw...@verizon.net wrote: For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external How much current do the ovenized OCXOs use.? Can they run on a small battery? ___ 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] Loran DX and Austron 2100
Good Morning Claude, I am assembling a K9AY terminated loop antenna, pointing to N. Europe. (~30 degrees) Will use a ARR preamplifier at the antenna. I hope to start listening later this month. Some stations to listen for: Lessay, France master on GRI 6731, Soustons France, slave X BO , master on 7001, Jan Mayen, slave X, Berlevag slave Y Sylt, on 7499, Lessay, slave X, Vaerlandet, slave Y Eidi (Ejde) on 9007 master, Jan Mayen slave W,BO slave X, Vaerlandet slave Y From my location on Cape Cod FN41sr, looks like the closest active chain is Eidi with GRI of 9007 Eidi, IP62lh DX of 2900.1 miles Jan Mayen, IQ50pv, 2900.2 miles Lessay, IN99fd at 3274.1 miles Soustons, IN93hr at 3412.4 miles, (6731 GRI) I have not calculated BO, and Berlevag details (7001 GRI) nor for the Sylt chain. A google search on Loran C stations will show a listing of the few active stations with the station details like RF power output and Lat/Long. I have converted Lat/Long to 6 digit grid locator for my ease in LOB and DX calculations with BD2004 software. Sky wave propagation should be possible for the North Atlantic, European, Western Russia, Saudi, and Mediterranean chains. Low likelihood of any ground wave and its better accuracies. I miss my Nantucket Loran-C station and its Cs accuracies. A modern Stanford Research Systems model FS700 Loran C receiver is on hand as the receiver. Stan, W1LE Cape Cod FN41sr On 12/12/2010 8:17 AM, Claude Houde wrote: Hello everybody. Does anyone on the northern east coast has been sucessfull in receiving European Loran C chains ? I'm located around Montreal, Québec. If so, what type of antennas you used ? Thanks ! Claude Houde VA2 HDD ___ 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] MBD /B
Hello The Net: I estimate /B MBD to be in DM79lt, in Westminster, CO. Just NW of Denver. Since I am in FN41sr, my LOB to is: 277.5 degrees ref true North at a distance of 2,907.5 Km or 1806.4 miles. I got the LOB and DX info from the BD2004 software at the www.w1ghz.org site. It would be a long shot for me to hear it from Cape Cod FN41sr Stan,W1LE ___ 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] MBD /B
Sorry for the confusion, Not a non directional beacon (NDB) , but rather a part 15 beacon on 137 KHz. some recent posts include : On 12/8/2010 3:55 PM, C. Turner wrote: I tried detecting MBD/QRSS30 from Utah - but nothing heard/seen. Beacon MBD is on now, at 187.517 khz, QRSS30 mode. 0400 - 0700 UTC ( 9pm MST to 12 am MST ) 73 Mark AB0CW Thanks Stan, W1LECape Cod ___ 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] MBD /B
I figured out what I did wrong. I cross posted from the lowfer reflector. Please disregard. I will be more careful in the future. Stan, W1LE Cape Cod ___ 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] Time Code generator
Would Virtual Audio Cable (VAC) software provide the routing neccessary for your application ? Stan, W1LE On 12/6/2010 8:12 AM, Collins, Graham wrote: Thanks all for their comments on this topic. Over the weekend I spent much time messing about with the NTP stuff and the NMEAGps application. NMEAGps does just as described and does make a nice IRIG-B signal through a PC's sound card. Unfortunately you cannot specifiy which of several soundcard interfaces you want it to use, it will use the one as set as the default which for my use does not work so well. ___ 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] Time Code generator
Hello The Net: Another possible application is for a pocket digital recorder to generate a serial time code, record it, and also allow 2 channels channels (stereo) of simultaneous audio recording. One pocket digital recorder I am looking at is the Olympus model WS-500 (~ 70$ at New Egg) It may not have Time-Nut (10 to the minus 12) accuracy but it would serve my purpose when recording/logging satellite QSO's in a portable operation with a hand held full duplex, dual band walkie talkie and a hand held/pointed dual band yagi antenna. Audio receive from the satellite downlink would be fed into one audio channel and uplink audio would go to the other audio channel. I could also live with only one audio channel for the downlink. On playback the recorder indicates actual time of the recording being played back. After the satellite pass, transcribe the recoded info, or archive it in a digital file. The digital recorder is pocket size allowing hands free operation. One hand to operate the transceiver and the other hand pointing the antenna. I have not bought one yet, but I suspect the archived audio file would allow time stamping to be played back in the common PC media player applications. Is the serial time code IRIG-A/B/C ? maybe not, but I can live with the existing time code format.. Stan, W1LE Cape Cod FN41sr On 12/3/2010 7:28 AM, Collins, Graham wrote: On another list to which I subscribe, the question was asked about the suitability of recording WWV 2.5mhz audio as one track when recording off the air signals of interest as a time reference. The person who asked the question didn't really state his intentions but they seem very similar to my immediate needs. That is, simply a time reference - that is the time, the start of the minute, and periodic references (i.e. seconds) between the announcements. It seems that recording the audio of something like WWV or CHU is ideal. However, another approach would be recording a more proper time code signal as you might have available from a precision clock. Of course, a decoder would also be required. A quick Google search turned up lots of leads which I have yet to sort through. In the interim I thought I would pose the question to the learned members of this group for their suggestions. Keep in mind KISS and that a very high degree of accuracy is not required. Is there an opensource/freeware PC app that will generate an appropriate time code signal that can be recorded on one track of an audio recorder (either PC based i.e. Audacity or standalone) that will also decode via soundcard or other input? Cheers, Graham ve3gtc ___ 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] FS700 schematic
It is not just one page. What are you specifically looking for ? Most sheets are B size ( double A size). I got the complete manual from SRS for ~35$ Stan, W1LE On 11/22/2010 10:00 AM, Ulrich Bangert wrote: Gentlemen, I know this one has been asked a few years before but I give it another try: Has anyone of you a Stanford Research FS700 schematic available that he can share with me? Best regards Ulrich Bangert www.ulrich-bangert.de Ortholzer Weg 1 27243 Gross Ippener ___ 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.
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.
Re: [time-nuts] Why .30 cal holes can't be seen at 800 yds...
On 11/3/2010 5:40 PM, Bill Hawkins wrote: Actually, some old dynamite that is leaking an oily liquid is a sure-fire way to get a flash. Just don't drop it. And be sure to wear gloves to prevent direct skin absorption of the nitro (usually not mentioned on the MSDS.) Other wise you may loose some time. Stan, W1LE ___ 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] Yikes, WECO is hard to find
Easier to cope with a female BNC, change it out. Trompeter has adapters from the male WECO to BNC. Long term solutions is to change it out to a BNC (female). Did I mention it is easier to change it out Stan, W1LE Cape Cod On 11/3/2010 6:27 PM, William H. Fite wrote: Anyone know a source for WECO 439A/440A connectors and adapters? Optimist that I am, I thought they would be easy to find. Coping with an HP 3336B. Thanks for any help you can offer. Bill ___ 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] A little quick advice, please
Hello Bill, If you already have a PC with a motherboard soundcard or a accessory soundcard (PCI), then with appropriate software you can look at signals in the time or frequency domains. a google search on scope software may find some shareware. Spectrum Lab, Spectran, etc. are also free and on a windows PC will show the frequency spectrum to the frequency limits of the soundcard. Just depends what you really want to do and the complexity of your testing. If you have to spend the money, get one of each and play... HI Stan, W1LE On 10/31/2010 9:35 AM, William H. Fite wrote: 'morning, folks, I was just on a verge of purchasing a Tek TDS1012 scope when a friend suggested that I could save a chunk of change by buying a BitScope. Although I've been aware of PC scopes, I never really looked into them. The specs look pretty good (the fact that I was looking at an entry-level Tek will give you some idea of my needs). Anyone have any experience with BitScope or other of the low-end PC scopes? Thanks, Bill ___ 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.
