Post by thread:[EE]: BNC on RG-59

Hi everyone, A quick question: I have to put some crimp-on Amphenol male BNC connectors on RG-59 coax. I bought the crimp tool which they specified for the task, but I'm still not sure of the exact procedure. I've done solder-on PL-259's before, but not crimp-on BNCs. The connector comes in 4 pieces: a main body, a small metal tube just slightly larger than the coax, a tiny gold-plated center pin, and a little (teflon?) piece which is pretty much a little button with a hole in the center and a rim around it. This last piece is the one the puzzles me, where does it go? THanks, Sean -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Sean Breheny wrote: >A quick question: I have to put some crimp-on Amphenol male BNC >connectors on RG-59 coax. I bought the crimp tool which they specified >for the task, but I'm still not sure of the exact procedure. I've done >solder-on PL-259's before, but not crimp-on BNCs. ..... > Ahh, it does my heart good to see that phd [???] students don't know how to crimp a wire :). [guess they're doing something right in our educational systems]. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Hi Dan, Actually, I'm not a PhD student, I'm an undergrad (senior). And, yes, I have used crimp tools for other types of connectors before. So, are you just going to make remarks or ar you going to tell me how to do it? :-) Sean On Thu, 22 Feb 2001, Dan Michaels wrote: {Quote hidden}> Sean Breheny wrote: > > >A quick question: I have to put some crimp-on Amphenol male BNC > >connectors on RG-59 coax. I bought the crimp tool which they specified > >for the task, but I'm still not sure of the exact procedure. I've done > >solder-on PL-259's before, but not crimp-on BNCs. > ..... > > > > > Ahh, it does my heart good to see that phd [???] students don't > know how to crimp a wire :). [guess they're doing something right > in our educational systems]. > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Sean wrote: >Hi Dan, > >Actually, I'm not a PhD student, I'm an undergrad (senior). And, yes, I >have used crimp tools for other types of connectors before. > >So, are you just going to make remarks or ar you going to tell me how to >do it? :-) > Hey, "I" don't know - they never taught me that stuff in school :):). -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Sean, Most of the BNC crimp connectors I have used contained only three pieces. The "Teflon" piece you speak of is most likely an additional insulator between the center conductor and the body of the connector. So to use, after you strip the wire, slide the hollow silver cylinder on the cable, slide the "Teflon" part onto the conductor wire, crimp the small brass point onto the conductor wire, slide the connector body onto/into the cable. Finally, slide the cylinder tight against the connector body, and crimp the living daylights out of it. VIOLA!!! JJW At 10:50 AM 2/22/01 -0800, you wrote: {Quote hidden}>Sean wrote: > >Hi Dan, > > > >Actually, I'm not a PhD student, I'm an undergrad (senior). And, yes, I > >have used crimp tools for other types of connectors before. > > > >So, are you just going to make remarks or ar you going to tell me how to > >do it? :-) > > > >Hey, "I" don't know - they never taught me that stuff in school :):). > >-- >http://www.piclist.com hint: The list server can filter out subtopics >(like ads or off topics) for you. See http://www.piclist.com/#topics > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Sean, This isn't EXACTLY what you asked about, but it should be close enough to give you some help. http://www.milestek.com/products1.htm Choose "Technical Info" at the very top of the page. From "Instructions/Product Support", select "BNC Plug Installation" from the list. There are several other tool categories that you may also find useful to investigate, such as the pin crimper that is used to crimp on the tiny end pin. Your tool may not be identical, but the general instructions should still apply. Fr. Tom McGahee {Original Message removed}

Been there, and frankly it sucks when you don't get instructions. Trouble is I use 50 ohm and RG58 so not exactly the same. The 50 ohm type always have an insulator that surrounds the pin and extends to the front. In clamp type connectors it's usually loose but in crimp ones it's captive. By elimination the only place I can see it going is between the trimmed end of the coax and the pin but even that I'm not convinced of. Since you imply it's a small quantity if you have a choice I would advise using the clamp type that comes with a longish sealing gasket, cylindrical about 5mm or 1/5 inch long. Don't know the make. There's another type with a different clamp and a very thin gasket but we won't use them. I guess it's a foregone conclusion you're stuck with crimp type? Can you get anything out of the supplier? Oliver {Original Message removed}

Sean, All the ones I have used come with *instructions* that tell the strip lengths of the jacket, braid, dielectric, and center conductor and the little exploded drawing of how to put it together. The strip lengths really matter to get it to work right and not short out. But in general: 1)You strip the jacket and braid the same length, leaving center conductor and insulator longer. 2)Then the strip the insulator, leaving it longer than the jacket, but leaving bare center conductor. You thread the insulator disc onto the center conductor, then crimp the pin on. 3)Drop the "tube" (ferrule) over the cable. 4)Press the dressed cable into the body, the neck of the connector jams in between the dielectric and the braid 5) crimp the furrule over the jacket in the area covering the neck of the connector, so it can't pull out. But: Connector designs and dims. vary a lot. So: Do you have the docs? If not, can you tell the manufacturer / model # for a www search? Regards, Barry. ------------ Barry King NRG Systems "Measuring the Wind's Energy" http://www.nrgsystems.com Check out the accumulated (PIC) wisdom of the ages at: PIC/PICList FAQ: http://www.piclist.com/faq -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

I have always assumed that the teflon piece was a heat insulator when soldering. When you solder the center pin on RG-59 with foam dielactric the heat from the pin melts the dielectric and you wind up with a 1/8" gap between the back of the pin and the start of the dielectric. Sean Breheny wrote: {Quote hidden}> Hi everyone, > > A quick question: I have to put some crimp-on Amphenol male BNC > connectors on RG-59 coax. I bought the crimp tool which they specified > for the task, but I'm still not sure of the exact procedure. I've done > solder-on PL-259's before, but not crimp-on BNCs. > > The connector comes in 4 pieces: a main body, a small metal tube just > slightly larger than the coax, a tiny gold-plated center pin, and a > little (teflon?) piece which is pretty much a little button with a hole > in the center and a rim around it. This last piece is the one the puzzles > me, where does it go? > > THanks, > > Sean > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.