https://goo.gl/photos/tygN5ZFeFLUhc4zX6 Near Portland Oregon Don't want much, make offer. Anyone interested ? Can bring to Seaside Swap meet -pete

On Mon, 22 May 2017 05:59:59 -0700, you wrote: >https://goo.gl/photos/tygN5ZFeFLUhc4zX6 > >Near Portland Oregon Neat stuff...did anybody but GR use those hermaphrodite connectors? I have an adapter for them that came with a wide-band amplifier; "delay line" type, with a whole row of, I think, 6AK5s in it. -- Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic Zone 5/4 in upstate New York, 1420' elevation. NY WO G --- This email has been checked for viruses by AVG. http://www.avg.com

Hi Gary, I have seen them on old HP, Tektronix, and a few other brands. GR was the most famous for them tbough that I've seen. Mark KC0OHJ On May 26, 2017 9:52 PM, "Gary Woods" <garygarlic@earthlink.net> wrote: On Mon, 22 May 2017 05:59:59 -0700, you wrote: >https://goo.gl/photos/tygN5ZFeFLUhc4zX6 > >Near Portland Oregon Neat stuff...did anybody but GR use those hermaphrodite connectors? I have an adapter for them that came with a wide-band amplifier; "delay line" type, with a whole row of, I think, 6AK5s in it. -- Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic Zone 5/4 in upstate New York, 1420' elevation. NY WO G --- This email has been checked for viruses by AVG. http://www.avg.com _______________________________________________ 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.

Yes, the GR-874 was used on a number of Tektronix products introduced in the 1960's and 1970's. https://en.wikipedia.org/wiki/GR_connector http://w140.com/tekwiki/wiki/GR-874_connector Both the GR-874 and APC-7 connectors are sexless, and any connector can mate with any other. -- Bill Byrom N5BB ----- Original message ----- From: Gary Woods <garygarlic@earthlink.net> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Two pieces of old General Radio Freq. Nuts Date: Fri, 26 May 2017 23:21:11 -0400 ... Neat stuff...did anybody but GR use those hermaphrodite connectors?  I have an adapter for them that came with a wide-band amplifier; "delay line" type, with a whole row of, I think, 6AK5s in it. _______________________________________________ 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.

HP used GR connectors in the 1415A Time Domain Reflectometer plug-in for the 140-family of oscilloscopes. I believe this is the only use of the GR connector in HP's "common" test instruments. Jeremy On Fri, May 26, 2017 at 10:13 PM Bill Byrom <time@radio.sent.com> wrote: > Yes, the GR-874 was used on a number of Tektronix products introduced in > the 1960's and 1970's. > > https://en.wikipedia.org/wiki/GR_connector > http://w140.com/tekwiki/wiki/GR-874_connector > > Both the GR-874 and APC-7 connectors are sexless, and any connector can > mate with any other. > -- > Bill Byrom N5BB > > ----- Original message ----- > From: Gary Woods <garygarlic@earthlink.net> > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Subject: Re: [time-nuts] Two pieces of old General Radio Freq. Nuts > Date: Fri, 26 May 2017 23:21:11 -0400 > ... > Neat stuff...did anybody but GR use those hermaphrodite connectors? I > have > an adapter for them that came with a wide-band amplifier; "delay line" > type, with a whole row of, I think, 6AK5s in it. > > _______________________________________________ > 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 Gmail Mobile

Hi > On May 26, 2017, at 11:21 PM, Gary Woods <garygarlic@earthlink.net> wrote: > > On Mon, 22 May 2017 05:59:59 -0700, you wrote: > >> https://goo.gl/photos/tygN5ZFeFLUhc4zX6 >> >> Near Portland Oregon > > Neat stuff...did anybody but GR use those hermaphrodite connectors? At one time, GR was pretty much the only source for a wide range of RF and microwave test gear. Anything that was going to work with that gear may have come with the GR connectors. That includes stuff like attenuators, cables, and other bits of “lab clutter”. When you checked the box for the GR connectors, the price went up quite a bit. That made the gizmos with the connectors on them a bit more rare than they otherwise would be. Bob > I have > an adapter for them that came with a wide-band amplifier; "delay line" > type, with a whole row of, I think, 6AK5s in it. > > > -- > Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic > Zone 5/4 in upstate New York, 1420' elevation. NY WO G > > --- > This email has been checked for viruses by AVG. > http://www.avg.com > > _______________________________________________ > 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.

Yep, GR once made the best. The GR connector had at least three things going; as noted hermaphroditic. No need for several sexes. Second, they are seamless 50 ohms, very very small reflections at the connection. Third, banana plugs (also a GR idea, I think) fit in the center "post" of the connector without wrecking anything. GR also made an hermaphroditic connector good to several GHz before passing into legend. . . Don On 2017-05-27 05:01, Bob kb8tq wrote: > Hi > >> On May 26, 2017, at 11:21 PM, Gary Woods <garygarlic@earthlink.net> >> wrote: >> >> On Mon, 22 May 2017 05:59:59 -0700, you wrote: >> >>> https://goo.gl/photos/tygN5ZFeFLUhc4zX6 >>> >>> Near Portland Oregon >> >> Neat stuff...did anybody but GR use those hermaphrodite connectors? > > At one time, GR was pretty much the only source for a wide range of RF > and microwave test gear. Anything that was going to work with that gear > may have come with the GR connectors. That includes stuff like > attenuators, > cables, and other bits of “lab clutter”. When you checked the box for > the > GR connectors, the price went up quite a bit. That made the gizmos with > the connectors on them a bit more rare than they otherwise would be. > > Bob > > >> I have >> an adapter for them that came with a wide-band amplifier; "delay line" >> type, with a whole row of, I think, 6AK5s in it. >> >> >> -- >> Gary Woods AKA K2AHC- PGP key on request, or at >> home.earthlink.net/~garygarlic >> Zone 5/4 in upstate New York, 1420' elevation. NY WO G >> >> --- >> This email has been checked for viruses by AVG. >> http://www.avg.com >> >> _______________________________________________ >> 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. -- Dr. Don Latham PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304

The GenRad 874 connector was good to 4.5 Ghz and took a Banana plug in the center conductor without changing electrical characteristics!!! http://www.ietlabs.com/pdf/GR_Experimenters/1948/GenRad_Experimenter_Oct_1948.pdf Not bad for a connector designed in 1948! It was largely supplanted by the APC-7 connector from Bunker-Ramo which was also a hermaphrodite design but had a 18 Ghz frequency limit Lots of Tek calibrators used this connector due to its good impedance matching without requiring obsessive connector maintenance as the APC-7 does (cleaning, gauging and finger replacement) Content by Scott Typos by Siri > On May 28, 2017, at 12:21 AM, djl <djl@montana.com> wrote: > > Yep, GR once made the best. The GR connector had at least three things going; as noted hermaphroditic. No need for several sexes. Second, they are seamless 50 ohms, very very small reflections at the connection. Third, banana plugs (also a GR idea, I think) fit in the center "post" of the connector without wrecking anything. GR also made an hermaphroditic connector good to several GHz before passing into legend. . . > Don > > >> On 2017-05-27 05:01, Bob kb8tq wrote: >> Hi >>> On May 26, 2017, at 11:21 PM, Gary Woods <garygarlic@earthlink.net> wrote: >>>> On Mon, 22 May 2017 05:59:59 -0700, you wrote: >>>> https://goo.gl/photos/tygN5ZFeFLUhc4zX6 >>>> Near Portland Oregon >>> Neat stuff...did anybody but GR use those hermaphrodite connectors? >> At one time, GR was pretty much the only source for a wide range of RF >> and microwave test gear. Anything that was going to work with that gear >> may have come with the GR connectors. That includes stuff like attenuators, >> cables, and other bits of “lab clutter”. When you checked the box for the >> GR connectors, the price went up quite a bit. That made the gizmos with >> the connectors on them a bit more rare than they otherwise would be. >> Bob >>> I have >>> an adapter for them that came with a wide-band amplifier; "delay line" >>> type, with a whole row of, I think, 6AK5s in it. >>> -- >>> Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic >>> Zone 5/4 in upstate New York, 1420' elevation. NY WO G >>> --- >>> This email has been checked for viruses by AVG. >>> http://www.avg.com >>> _______________________________________________ >>> 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. > > -- > Dr. Don Latham > PO Box 404, Frenchtown, MT, 59834 > VOX: 406-626-4304 > > _______________________________________________ > 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.