The MOSFET drivers are limited in the max frequency they can operate at without burning. At 1 Hz it is of course not a problem but at 10MHz it most definitely would be.
Since Martin did not originally say at what frequency he wanted to operate, it was most relevant. MOSFET drivers can deliver a few nS edges while driving significant capacitance at several hundred kHz. They can be very useful for "low" frequency clock drivers. Didier KO4BB On March 7, 2015 10:10:45 AM CST, Graham / KE9H <ke9h.gra...@gmail.com> wrote: >The question is not the frequency, but the edge rate. For a 1 PPS >signal, >how fast a rise time do you need? Do you want to know the time of the >edge to 1/100 second? one microsecond? one nano-second? A few >pico-seconds? > >If you want to know the time of the edge to one nano-second, then you >need a driver that can push sine-waves at over a few GHz. Not 10 MHz. > >--- Graham / KE9H > >== > >On Sat, Mar 7, 2015 at 7:58 AM, Didier Juges <shali...@gmail.com> >wrote: > >> Martyn, if you only need 1Hz, I recommend you use a MOSFET driver >like the >> MIC4420 series or the UCC27531, powered from 10V with a 50 ohm output >> resistance. These parts have several A current capability, 18V or >more max >> VCC and are designed to drive capacitive loads (large MOSFET gate >> capacitance). It would not work at 10MHz (because of propagation >delay and >> self heating), but at lower frequencies, they work very well. >> The UCC27531 has lower propagation time and comes in an SOT-23 >package, the >> others are available in DIP-8 and SO-8. >> >> Didier KO4BB >> >> On Thu, Mar 5, 2015 at 3:59 PM, Martyn Smith <mar...@ptsyst.com> >wrote: >> >> > Hello, >> > Thanks for all the feedback. >> > I should explain. I have an existing product that uses the 74AC14. >> > I have a customer who needs 5V into 50 ohm and can’t wait for the >> > competitive product that does this, or for me to re-design my unit. >> > So I have been looking for a quick fix. >> > I got excited when I found the SN74AS1004AD which has the exact >same >> > function and pin out but delivers 48 mA per channel. >> > While one output did give me 0-3.0 V into 50 ohm, combining them, >as we >> do >> > for the 74AC, actually produced worse results. >> > Maybe the output driver is different. >> > Anyway I’ve managed to get 0-4.8V by jacking up the supply voltage >to 5.7 >> > V for the 74AC14 and making the three 47 ohm resistors 0 ohm. >> > Risetime < 4 ns. >> > Basically to ideas that TimeNuts gave me. >> > I’m just worried the IC may die after a few months. But since the >> > customer will only use it at 1 Hz and hopefully 50:50 duty, or >less, I >> hope >> > to get away with it. >> > Of course if he removes the input and the outputs are on high, then >that >> > may be a problem. >> > BTW, the reason he wants this high voltage is because he is driving >a >> very >> > long cable from the distribution amp to the actual receiver. >> > Anyway I have an IC on test for a week to make sure it lasts. >> > Regards >> > Martyn >> > >> > >> > Today's Topics: >> > >> > 1. Re: 50 ohm Driver (Bob Albert) >> > 2. Re: 50 ohm Driver (Graham / KE9H) >> > 3. Re: 50 ohm Driver (Tom Van Baak) >> > 4. Re: 50 ohm Driver (Hal Murray) >> > 5. Re: 50 ohm Driver (Dan Kemppainen) >> > 6. Re: Trimble Thunderbolt NMEA ? (Didier Juges) >> > 7. Re: 50 ohm Driver (Bob Camp) >> > 8. Re: 50 ohm Driver (Charles Steinmetz) >> > 9. Re: new tdc from Texas (Angus) >> > 10. Re: new tdc from Texas (Attila Kinali) >> > >> > >> > >---------------------------------------------------------------------- >> > >> > Message: 1 >> > Date: Wed, 4 Mar 2015 16:49:11 +0000 (UTC) >> > From: Bob Albert <bob91...@yahoo.com> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: >> > <1276775018.2671439.1425487751520.javamail.ya...@mail.yahoo.com> >> > Content-Type: text/plain; charset=UTF-8 >> > >> > 5V into 50 Ohms means 100 mA. Perhaps you need a medium power >transistor >> > amplifier or opamp. >> > Bob >> > >> > >> > On Wednesday, March 4, 2015 6:09 AM, Martyn Smith < >> mar...@ptsyst.com> >> > wrote: >> > >> > >> > Hello, >> > >> > A quick question. >> > >> > My output driver for a simple amplifier. >> > >> > I use three gates (in parallel with resistors) from a 74AC14 to >give me >> > about 0-3.2V into 50 ohm. >> > >> > I want to have a driver that gives me a full 0-5V (at least 0-4.5V) >swing >> > into 50 ohms. >> > >> > Can anyone recommend an IC that can delivery this. >> > >> > But it needs to have similar jitter performance to the 74AC14. >> > >> > I use it up to 10 MHz. >> > >> > Best Regards >> > >> > Martyn >> > >> > _______________________________________________ >> > 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. >> > >> > >> > >> > >> > ------------------------------ >> > >> > Message: 2 >> > Date: Wed, 4 Mar 2015 12:16:02 -0600 >> > From: "Graham / KE9H" <ke9h.gra...@gmail.com> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: >> > ><capyj-yxrlkw6y-poglqwjss+mehm6ifc+etyb-mcczkhjpw...@mail.gmail.com> >> > Content-Type: text/plain; charset=UTF-8 >> > >> > Building on top of John's comments, if you are using a logic gate, >look >> at >> > the >> > maximum output (pull up) current per pin, set the series resistor >so that >> > this >> > current is not exceeded into a short, then also see if there is a >maximum >> > total >> > current draw for all gates combined, or some power input pin, and >do not >> > exceed >> > that. >> > >> > You can also look at switching the termination resistor from a >simple 50 >> > Ohm >> > resistor to ground, to a "Thevenin" load, which is 100 Ohms from +V >to >> the >> > load point, >> > and another 100 Ohm resistor from the load point to ground. This >way you >> > still have a 50 Ohm termination, but only draw one half the DC >current. >> > In the event of no input, the receiver voltage will go to half >scale. >> Make >> > sure your system will not misbehave when this happens. >> > >> > Alternate driver is to use a video line driver with sufficient >bandwidth. >> > >> > --- Graham / KE9H >> > >> > == >> > >> > On Wed, Mar 4, 2015 at 7:54 AM, John Ackermann N8UR <j...@febo.com> >> wrote: >> > >> > > One comment on the parallel AC gate approach. It may not be >directly >> > > applicable to Martyn's issue, but there is a common confusion >about the >> > > value of the summing resistors. >> > > >> > > Per Tom Clark, who came up with the idea, they are *not* intended >to >> > > provide a near-end line termination to 50 ohms, but are simply >there to >> > > protect the paralleled devices if the gates have slightly >different >> > delays >> > > (in which case one gate could end up sinking the other two). >> > > >> > > So, the commonly used 47 ohm value isn't magic. You can use a >lower >> > > value, and thus get more voltage at the far end. I haven't >> experimented >> > to >> > > see how far you can take that idea before destroying gates. >> > > >> > > John >> > > ---- >> > > >> > > On 3/4/2015 5:26 AM, Martyn Smith wrote: >> > > >> > >> Hello, >> > >> >> > >> A quick question. >> > >> >> > >> My output driver for a simple amplifier. >> > >> >> > >> I use three gates (in parallel with resistors) from a 74AC14 to >give >> me >> > >> about 0-3.2V into 50 ohm. >> > >> >> > >> I want to have a driver that gives me a full 0-5V (at least >0-4.5V) >> > swing >> > >> into 50 ohms. >> > >> >> > >> Can anyone recommend an IC that can delivery this. >> > >> >> > >> But it needs to have similar jitter performance to the 74AC14. >> > >> >> > >> I use it up to 10 MHz. >> > >> >> > >> Best Regards >> > >> >> > >> Martyn >> > >> >> > >> _______________________________________________ >> > >> 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. >> > > >> > >> > >> > ------------------------------ >> > >> > Message: 3 >> > Date: Wed, 4 Mar 2015 10:20:45 -0800 >> > From: "Tom Van Baak" <t...@leapsecond.com> >> > To: "Discussion of precise time and frequency measurement" >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: <231A4CB7D0CB45CAAF6A3015A4900374@pc52> >> > Content-Type: text/plain; charset="utf-8" >> > >> > Martyn -- the 74AC spec allows Vcc to go up to 6.0 VDC (absolute >max is >> > 7.0 VDC) so that might help you meet your 4.5 VDC goal, especially >if >> this >> > is for play and not a product. Pick the resistors and use more than >3 >> gates >> > if necessary. Note the peak current spec is 50 mA per gate. Not >sure what >> > the combined gate current limit is; there is a package thermal >limit. You >> > also have to decide if you want some level of short-circuit >protection or >> > if you can always assume 50R termination. >> > >> > John -- have you tried long duration output shorts on the TADD-2? I >> > figured that was also a reason for each gate having its own >resistor. >> > >> > /tvb >> > >> > >> > >> > ------------------------------ >> > >> > Message: 4 >> > Date: Wed, 04 Mar 2015 12:03:16 -0800 >> > From: Hal Murray <hmur...@megapathdsl.net> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Cc: hmur...@megapathdsl.net >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: >> > <20150304200316.6afbc406...@ip-64-139-1-69.sjc.megapath.net> >> > Content-Type: text/plain; charset=us-ascii >> > >> > >> > j...@febo.com said: >> > > Per Tom Clark, who came up with the idea, they are *not* intended >to >> > > provide a near-end line termination to 50 ohms, but are simply >there to >> > > protect the paralleled devices if the gates have slightly >different >> > delays >> > > (in which case one gate could end up sinking the other two). >> > >> > Is that a real problem? How far off can the prop delay be for 2 >gates on >> > the >> > same chip? >> > >> > I seem to remember reading something saying it was OK to just wire >them >> up >> > in >> > parallel. It could have been an app note, or it could have been a >rumor >> on >> > usenet. >> > >> > -- >> > These are my opinions. I hate spam. >> > >> > >> > >> > >> > >> > ------------------------------ >> > >> > Message: 5 >> > Date: Wed, 04 Mar 2015 15:57:56 -0500 >> > From: Dan Kemppainen <d...@irtelemetrics.com> >> > To: time-nuts@febo.com >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: <54f771d4.4010...@irtelemetrics.com> >> > Content-Type: text/plain; charset=utf-8; format=flowed >> > >> > Hi, >> > >> > Correct me if I'm wrong but being that AC series gates are MOS >devices, >> > isn't there inherent current limiting in the MOS junction itself? I >> > would think that for the few nanoseconds of skew across gates the >tens >> > of ohms of junction resistance would make 'shoot through' >negligible in >> > terms of heating and gate damage. >> > >> > Of course, a TTL device would be a completely different story and I >> > would fully expect summing or balancing resistor would be needed >there. >> > >> > Does anyone have further input regarding paralleling MOS logic >devices? >> > >> > Dan >> > >> > >> > >> > > One comment on the parallel AC gate approach. It may not be >directly >> > > applicable to Martyn's issue, but there is a common confusion >about the >> > > value of the summing resistors. >> > > >> > > Per Tom Clark, who came up with the idea, they are*not* intended >to >> > > provide a near-end line termination to 50 ohms, but are simply >there to >> > > protect the paralleled devices if the gates have slightly >different >> > > delays (in which case one gate could end up sinking the other >two). >> > > >> > > So, the commonly used 47 ohm value isn't magic. You can use a >lower >> > > value, and thus get more voltage at the far end. I haven't >> experimented >> > > to see how far you can take that idea before destroying gates. >> > > >> > > John >> > >> > >> > ------------------------------ >> > >> > Message: 6 >> > Date: Wed, 04 Mar 2015 17:44:09 -0600 >> > From: Didier Juges <shali...@gmail.com> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] Trimble Thunderbolt NMEA ? >> > Message-ID: <ef4edc38-c96b-402f-ab2f-9ac273ab3...@gmail.com> >> > Content-Type: text/plain; charset=UTF-8 >> > >> > The code is in C and Silabs has small dev kits (Toolsticks) that >cost $10 >> > to which you need to add $18 for the programming dongle. A little >more >> > expensive than an Arduino, or less, depending on where you buy >it... >> > >> > To that you need to add a MAX232 (or two serial-TTL adapters at $4 >each >> or >> > so on ebay) and you are in business. >> > >> > Total cost about the same as a dedicated GPS receiver with antenna >and >> > NMEA output. Choose your poison :) >> > >> > Didier KO4BB >> > >> > >> > On March 3, 2015 10:23:56 PM CST, Chris Albertson < >> > albertson.ch...@gmail.com> wrote: >> > >Is the code in C? If so I bet it would run on some development >board. >> > >No >> > >need to make custom PCBs. >> > > >> > >On Tue, Mar 3, 2015 at 5:00 AM, Didier Juges <shali...@gmail.com> >> > >wrote: >> > > >> > >> Tim, >> > >> >> > >> It shouldn't be too hard to modify the code for my Thunderbolt >> > >monitor to >> > >> make it into a TSIP->NMEA converter. The last version of the kit >has >> > >a uC >> > >> with two serial ports. I m out of the kits at the moment but I >have a >> > >few >> > >> spare boards left over. >> > >> >> > > >> > >-- >> > > >> > >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. >> > >> > -- >> > Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I >do >> > other things. >> > >> > ------------------------------ >> > >> > Message: 7 >> > Date: Wed, 4 Mar 2015 18:47:13 -0500 >> > From: Bob Camp <kb...@n1k.org> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: <efc260cc-caf3-4021-8ef9-27540ae57...@n1k.org> >> > Content-Type: text/plain; charset=utf-8 >> > >> > Hi >> > >> > If you want to drive out of a 50 ohm source into your 50 ohm load >*and* >> > get 5V into the load … that’s a fancy amp. 10V power and some >careful >> > work to get it going. >> > >> > If you just want to get roughly 5V into a 50 ohm load, then it’s a >matter >> > of how >> > many gates you decide to parallel. If you go with “32 ma” drivers, >you >> > should >> > be able to get it done with 8 of them in parallel. Drive them all >off of >> a >> > single >> > dedicated fast gate that’s on the same supply. Probably best to >stuff >> > a 20 or 30 ohm resistor in series with each of the outputs. If it’s >*got* >> > to >> > be a full 5V, don’t use the resistors. >> > >> > Bob >> > >> > > On Mar 4, 2015, at 5:26 AM, Martyn Smith <mar...@ptsyst.com> >wrote: >> > > >> > > Hello, >> > > >> > > A quick question. >> > > >> > > My output driver for a simple amplifier. >> > > >> > > I use three gates (in parallel with resistors) from a 74AC14 to >give me >> > about 0-3.2V into 50 ohm. >> > > >> > > I want to have a driver that gives me a full 0-5V (at least >0-4.5V) >> > swing into 50 ohms. >> > > >> > > Can anyone recommend an IC that can delivery this. >> > > >> > > But it needs to have similar jitter performance to the 74AC14. >> > > >> > > I use it up to 10 MHz. >> > > >> > > Best Regards >> > > >> > > Martyn >> > > >> > > _______________________________________________ >> > > 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. >> > >> > >> > >> > ------------------------------ >> > >> > Message: 8 >> > Date: Wed, 04 Mar 2015 19:44:29 -0500 >> > From: Charles Steinmetz <csteinm...@yandex.com> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] 50 ohm Driver >> > Message-ID: <20150305034434.iyvem...@smtp12.mail.yandex.net> >> > Content-Type: text/plain; charset="us-ascii"; format=flowed >> > >> > >> > >Is [one gate sourcing or sinking current into paralleled gates >that >> > >don't switch at >> > >exactly the same time] a real problem? How far off can the prop >> > >delay be for 2 >> > >gates on the same chip? >> > > >> > >I seem to remember reading something saying it was OK to just wire >them >> > up in >> > >parallel. It could have been an app note, or it could have been a >rumor >> > on >> > >usenet. >> > >> > Most manufacturers sanction direct paralleling of gates on the same >> > chip (and forbid any paralleling, ballasted or otherwise, of >outputs >> > from different chips). However, there are other considerations >> > (short-circuit protection, maximum output current rating per gate, >> > maximum supply and/or ground current rating per package, maximum >> > power dissipation, etc.). Good design practice is to put series >> > resistors on each gate output that will prevent any of these >ratings >> > from being exceeded into a short circuit to ground or to Vcc. For >> > HC, AC, NC7NZ, and NC7SZ, the per-gate output current rating is +/- >> > 24 (or 25) mA, which suggests that each gate should have a 200 ohm >> > series resistor -- but you need to check all of the other ratings >> > mentioned above for the chip you use, to make sure they won't be >> violated. >> > >> > Unfortunately, if the load is 50 ohms to ground, pulling it to even >> > 4.5v from a 5v logic supply requires a source resistance of only >5.6 >> > ohms, or 36 parallel gates each with 200 ohms in series (this >assumes >> > that the gates can pull all the way to 5v while delivering rated >> > current, which they can't -- so the reality is even worse). You >can >> > make things a little better by terminating the output into 50 ohms >to >> > 1/2 Vcc (i.e, the center of a voltage divider with 100 ohms to Vcc >> > and 100 ohms to ground), but (i) it only gets a little better, and >> > (ii) now it won't pull all the way to ground. >> > >> > All that said, why do you want to generate a high-current square >> > wave, anyway? If you're distributing a frequency standard, it is >> > much better to distribute a sine wave (you don't have to worry >about >> > the harmonics being skewed, and there is exponentially less of a >> > problem with it radiating and getting into every radio and other >> > sensitive electronic device in your house and the other houses on >the >> > block). >> > >> > Best regards, >> > >> > Charles >> > >> > >> > >> > >> > >> > ------------------------------ >> > >> > Message: 9 >> > Date: Thu, 05 Mar 2015 01:27:23 +0000 >> > From: Angus <not.ag...@btinternet.com> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] new tdc from Texas >> > Message-ID: <uu9ffapgkl5t7qnv73m9v7j2ba5mttl...@4ax.com> >> > Content-Type: text/plain; charset=us-ascii >> > >> > Hi, >> > >> > I've not seen any mention of anything other than the TDC1000. >> > >> > I was a bit surprised that they went down the less-integrated route >> > and separated the TDC, but it turns out that for a lot of the sort >of >> > things they designed it for, a uC provides good enough timing >itself, >> > and no extra TDC is needed at all. >> > >> > I see that Acam have released a bit more info on their new GP30, >> > although no data sheet yet. It quotes typical LSB of 11ps, and rms >> > noise of 1.2 LSB, which is quite an improvement on the GP22. >> > It would just be good if they offered a simple online way of >getting >> > low volumes of them - I suspect that the specialist distributors >would >> > be just as happy as the customers would be! >> > >> > Angus. >> > >> > >> > On Tue, 03 Mar 2015 15:43:25 -0800, you wrote: >> > >> > >Hi Angus: >> > > >> > >Do you know if they have an IR pulse front end which would be more >> > interesting than the ultrasonic front end? >> > > >> > >Mail_Attachment -- >> > >Have Fun, >> > > >> > >Brooke Clarke >> > >http://www.PRC68.com >> > >http://www.end2partygovernment.com/2012Issues.html >> > >http://www.prc68.com/I/DietNutrition.html >> > >Angus wrote: >> > >> In case anyone is interested, the full data sheet is on the TI >site >> > >> now, although I didn't see any actual IC's yet other than the >ones in >> > >> the eval boards. >> > >> >> > >> Angus. >> > >> >> > >> >> > >> On Tue, 17 Feb 2015 21:24:08 -0200, you wrote: >> > >> >> > >>> Initial datasheet: >> > >>> >> > >>> http://www.ti.com/lit/ds/symlink/tdc7200.pdf >> > >>> >> > >>> EVM: >> > >>> >> > >>> http://www.ti.com/tool/tdc1000-tdc7200evm >> > >>> >> > >>> Seems good... what do you think? >> > >>> >> > >>> Daniel >> > >>> _______________________________________________ >> > >>> 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. >> > >> > >> > ------------------------------ >> > >> > Message: 10 >> > Date: Thu, 5 Mar 2015 08:56:23 +0100 >> > From: Attila Kinali <att...@kinali.ch> >> > To: Discussion of precise time and frequency measurement >> > <time-nuts@febo.com> >> > Subject: Re: [time-nuts] new tdc from Texas >> > Message-ID: <20150305085623.cb5218ab541d5ffaf13dc...@kinali.ch> >> > Content-Type: text/plain; charset=US-ASCII >> > >> > On Thu, 05 Mar 2015 01:27:23 +0000 >> > Angus <not.ag...@btinternet.com> wrote: >> > >> > > I've not seen any mention of anything other than the TDC1000. >> > > >> > > I was a bit surprised that they went down the less-integrated >route >> > > and separated the TDC, but it turns out that for a lot of the >sort of >> > > things they designed it for, a uC provides good enough timing >itself, >> > > and no extra TDC is needed at all. >> > >> > I think the main application TI intended it for is for ultrasonic >> > flow meeters (like [1]). There you have quite small and bounded >> > start-stop delays. With this they can get into the growing >electronics >> > for low energy building market. >> > >> > In contrast to that, the Acam devices seem to be general purpose >TDCs >> > >> > >> > Attila Kinali >> > >> > >> > [1] http://www.shk-profi.de/imgs/52579203_0d4dd378d4.jpg >> > -- >> > < _av500_> phd is easy >> > < _av500_> getting dsl is hard >> > >> > >> > ------------------------------ >> > >> > Subject: Digest Footer >> > >> > _______________________________________________ >> > time-nuts mailing list >> > time-nuts@febo.com >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > >> > ------------------------------ >> > >> > End of time-nuts Digest, Vol 128, Issue 5 >> > ***************************************** >> > _______________________________________________ >> > 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. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. _______________________________________________ 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.