You might be interested to know this was discussed in a paper by Jim Andrews (founder of Picosecond Pulse Laboratories): http://www.nist.gov/calibrations/upload/im-25-4.pdf >From the age of the paper, I'd say this generator is probably more than 40 years young. On Mon, Jan 13, 2014 at 2:22 PM, Bill Reed <breed@otelco.net> wrote: > Hi, > > Since there is no interest in my pulse generator maybe one of you knows > someone at NBS who can provide a schematic of the generator. > It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel > and is ~ 10 x 16 x 17. > > Thanks, > Bill Reed > > -----Original Message----- From: Bill Reed > Sent: Tuesday, January 07, 2014 7:53 PM > > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > Hi, > > Since you guys are interested in fast pule generators, I have one you may > be > interested in. > I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell it > to anyone for $ 50.00 plus shipping. > I prefer to sell to someone who will restore and use it rather than parting > it. It has more than $ 50.00 parts in it. > There are a 30 turn 6.5 inch diameter hard line, wide band hybrid coupler, > diode assembly and several adapters and attenuators. > I believe the hard line discharges into a step diode. The power supply > includes 200 V plus other voltages. > If I remember correctly ( I have no high speed scope now ) the pulse is 2 > nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp. > I checked with a 200 MHz digital scope and can see a pulse that verifies my > scopes bandwidth. The rate generator works but has problems. > See facebook (reedbn@otelco.net) for pictures under Impulse. > > Bill Reed 256 586-3446 > > -----Original Message----- From: ct1dmk > Sent: Sunday, December 29, 2013 7:36 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > Thank you all for your comments on this subject. > Happy new year. > > Luis Cupido. > ct1dmk. > _______________________________________________ > 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. >

Thanks Mark I must have serial number 2 of that series of IPG's. The one in the article is SN-3-75-1 and mine is SN-3-75-2. It was probably fabricated in March 75. I plan on visiting Redstone library to look up references 8 and 9. Bill -----Original Message----- From: Mark Kahrs Sent: Tuesday, January 14, 2014 12:02 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] fast edge, rise time. You might be interested to know this was discussed in a paper by Jim Andrews (founder of Picosecond Pulse Laboratories): http://www.nist.gov/calibrations/upload/im-25-4.pdf >From the age of the paper, I'd say this generator is probably more than 40 years young. On Mon, Jan 13, 2014 at 2:22 PM, Bill Reed <breed@otelco.net> wrote: > Hi, > > Since there is no interest in my pulse generator maybe one of you knows > someone at NBS who can provide a schematic of the generator. > It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel > and is ~ 10 x 16 x 17. > > Thanks, > Bill Reed > > -----Original Message----- From: Bill Reed > Sent: Tuesday, January 07, 2014 7:53 PM > > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > Hi, > > Since you guys are interested in fast pule generators, I have one you may > be > interested in. > I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell it > to anyone for $ 50.00 plus shipping. > I prefer to sell to someone who will restore and use it rather than > parting > it. It has more than $ 50.00 parts in it. > There are a 30 turn 6.5 inch diameter hard line, wide band hybrid coupler, > diode assembly and several adapters and attenuators. > I believe the hard line discharges into a step diode. The power supply > includes 200 V plus other voltages. > If I remember correctly ( I have no high speed scope now ) the pulse is 2 > nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp. > I checked with a 200 MHz digital scope and can see a pulse that verifies > my > scopes bandwidth. The rate generator works but has problems. > See facebook (reedbn@otelco.net) for pictures under Impulse. > > Bill Reed 256 586-3446 > > -----Original Message----- From: ct1dmk > Sent: Sunday, December 29, 2013 7:36 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > Thank you all for your comments on this subject. > Happy new year. > > Luis Cupido. > ct1dmk. > _______________________________________________ > 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.

Bill Interesting and curious what does it weigh? I would guess since its NIST a lot. Regards Paul WB8TSL On Wed, Jan 15, 2014 at 1:15 PM, Bill Reed <breed@otelco.net> wrote: > Thanks Mark > > I must have serial number 2 of that series of IPG's. The one in the > article is SN-3-75-1 and mine is SN-3-75-2. > It was probably fabricated in March 75. > I plan on visiting Redstone library to look up references 8 and 9. > > Bill > > -----Original Message----- From: Mark Kahrs > Sent: Tuesday, January 14, 2014 12:02 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > You might be interested to know this was discussed in a paper by Jim > Andrews (founder of Picosecond Pulse Laboratories): > > http://www.nist.gov/calibrations/upload/im-25-4.pdf > > From the age of the paper, I'd say this generator is probably more than 40 > years young. > > > > On Mon, Jan 13, 2014 at 2:22 PM, Bill Reed <breed@otelco.net> wrote: > > Hi, >> >> Since there is no interest in my pulse generator maybe one of you knows >> someone at NBS who can provide a schematic of the generator. >> It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel >> and is ~ 10 x 16 x 17. >> >> Thanks, >> Bill Reed >> >> -----Original Message----- From: Bill Reed >> Sent: Tuesday, January 07, 2014 7:53 PM >> >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] fast edge, rise time. >> >> Hi, >> >> Since you guys are interested in fast pule generators, I have one you may >> be >> interested in. >> I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell it >> to anyone for $ 50.00 plus shipping. >> I prefer to sell to someone who will restore and use it rather than >> parting >> it. It has more than $ 50.00 parts in it. >> There are a 30 turn 6.5 inch diameter hard line, wide band hybrid coupler, >> diode assembly and several adapters and attenuators. >> I believe the hard line discharges into a step diode. The power supply >> includes 200 V plus other voltages. >> If I remember correctly ( I have no high speed scope now ) the pulse is 2 >> nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp. >> I checked with a 200 MHz digital scope and can see a pulse that verifies >> my >> scopes bandwidth. The rate generator works but has problems. >> See facebook (reedbn@otelco.net) for pictures under Impulse. >> >> Bill Reed 256 586-3446 >> >> -----Original Message----- From: ct1dmk >> Sent: Sunday, December 29, 2013 7:36 PM >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] fast edge, rise time. >> >> Thank you all for your comments on this subject. >> Happy new year. >> >> Luis Cupido. >> ct1dmk. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

Paul It weighs 30 lbs. Pictures are on face book or I can email with an address. Bill -----Original Message----- From: paul swed Sent: Wednesday, January 15, 2014 12:20 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] fast edge, rise time. Bill Interesting and curious what does it weigh? I would guess since its NIST a lot. Regards Paul WB8TSL On Wed, Jan 15, 2014 at 1:15 PM, Bill Reed <breed@otelco.net> wrote: > Thanks Mark > > I must have serial number 2 of that series of IPG's. The one in the > article is SN-3-75-1 and mine is SN-3-75-2. > It was probably fabricated in March 75. > I plan on visiting Redstone library to look up references 8 and 9. > > Bill > > -----Original Message----- From: Mark Kahrs > Sent: Tuesday, January 14, 2014 12:02 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] fast edge, rise time. > > You might be interested to know this was discussed in a paper by Jim > Andrews (founder of Picosecond Pulse Laboratories): > > http://www.nist.gov/calibrations/upload/im-25-4.pdf > > From the age of the paper, I'd say this generator is probably more than 40 > years young. > > > > On Mon, Jan 13, 2014 at 2:22 PM, Bill Reed <breed@otelco.net> wrote: > > Hi, >> >> Since there is no interest in my pulse generator maybe one of you knows >> someone at NBS who can provide a schematic of the generator. >> It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel >> and is ~ 10 x 16 x 17. >> >> Thanks, >> Bill Reed >> >> -----Original Message----- From: Bill Reed >> Sent: Tuesday, January 07, 2014 7:53 PM >> >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] fast edge, rise time. >> >> Hi, >> >> Since you guys are interested in fast pule generators, I have one you may >> be >> interested in. >> I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell >> it >> to anyone for $ 50.00 plus shipping. >> I prefer to sell to someone who will restore and use it rather than >> parting >> it. It has more than $ 50.00 parts in it. >> There are a 30 turn 6.5 inch diameter hard line, wide band hybrid >> coupler, >> diode assembly and several adapters and attenuators. >> I believe the hard line discharges into a step diode. The power supply >> includes 200 V plus other voltages. >> If I remember correctly ( I have no high speed scope now ) the pulse is 2 >> nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp. >> I checked with a 200 MHz digital scope and can see a pulse that verifies >> my >> scopes bandwidth. The rate generator works but has problems. >> See facebook (reedbn@otelco.net) for pictures under Impulse. >> >> Bill Reed 256 586-3446 >> >> -----Original Message----- From: ct1dmk >> Sent: Sunday, December 29, 2013 7:36 PM >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] fast edge, rise time. >> >> Thank you all for your comments on this subject. >> Happy new year. >> >> Luis Cupido. >> ct1dmk. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.