Re: [time-nuts] connectors
Hah, don't we all. I look at the physical connector whenever I'm doing a layout. I used to be able to see the tiny, virtually invisible numbers that most of them have molded into the plastic. I can't see them anymore. :) I've conveniently managed to forget all the layouts I screwed up with reversed numbering. On 11/8/2014 12:00 PM, time-nuts-requ...@febo.com wrote: On Fri, Nov 7, 2014 at 9:14 PM, Bob Campkb...@n1k.org wrote: Hi The reason it was listed as #1 on the list is that I made the backwards numbering mistake when I was trying to work out the resistances on the interface connector. I’ve been doing this for 40 years and I still mess it up on a regular basis. We also seem to get it wrong from time to time when we lay out connector connections on pc boards, but that’s another story altogether ….. -- Bill Ezell -- The day Microsoft makes something that doesn't suck will be the day they make vacuum cleaners. ___ 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] connectors
w...@quackers.net said: Hah, don't we all. I look at the physical connector whenever I'm doing a layout. I used to be able to see the tiny, virtually invisible numbers that most of them have molded into the plastic. I can't see them anymore. :) I've conveniently managed to forget all the layouts I screwed up with reversed numbering. I keep a magnifying glass handy. Good light helps a lot. I used to be able to see everything on the boards I designed, and even work on them with a soldering iron. Over the years, parts got smaller and pins got closer together. At the same time, my eyes got older. It was about 15-20 years ago when they crossed over. There is another problem in this area. Older eyes can't focus as close. A magnifying glass fixes that. -- These are my opinions. I hate spam. ___ 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] Connectors
Another nifty product from 3M is their cold shrink tubing. It is a rubber tube stretched over a peel-able spiral core. You insert the tube over the cable/connector and peel out the core. The rubber shrinks down over the cable and forms a tight seal. It is typically used on buried cables. I use it to repair old printer platens like in the HP9100 calculator and Tektronix TDR thermal printers that have turned into goo. ___ 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] Connectors
Hi Rick, According to 3M the self amalgamating tape (130) is not UV resistant. They recommend covering it with 33+ to keep the light off. Not sure about the ScotchKote. The self amalgamating tape forms an air and watertight seal. It has no sulpher so no silver tarnishing. The trick with the 33+ cover layer is to minimse the amount of streach. This stops it unravelling. It's just there to block the UV. In particular, cut the end of the tape, don't pull it or tear it to separate the tape. Here in the UK a common alternative for connector protection was Denso tape, a fabric mesh tape filled with a petroleum mastic. http://www.denso.net/densotape/ It was developed for protecting idustrial pipework. Very effective but messy. Going back to 3M tapes, I've used 130 and a 3M high temperature fibreglass tape to do a roadside repair to a burst car radiator top hose. Used a patch of 130 (not streached or wrapped) over the hole, double wrap of fibreglass to keep that in place. Overlap wrap of 130, more fibreglass, final layer of 130. Lasted for a week of 160 miles a day of highway driving until the new hose arrived. I was working on a custom machine for 3M in early September 2001 (my return was delayed due to the flight ban) and had access to the staff discount store, I came back with a lifetime supply of tape :-) Robert G8RPI. From: Richard (Rick) Karlquist rich...@karlquist.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, 13 April 2013, 19:56 Subject: Re: [time-nuts] Connectors OK, so we seem to have: 1) Scotch 130 rubber tape 2) Scotch 33 electrical tape 3) Scotchkote in that order. So the rubber tape waterproofs the connection and the scotch kote protects it from UV, so what does the electrical tape do? Or maybe, the electrical tape does the waterproofing and the rubber tape just keeps goo off the connector. But of course, that can be done with the well known technique of winding the connector with electrical tape adhesive side out. Do we know that the rubber tape is not UV proof? Or none of the above. Can someone in the know clarify this? Thanks, Rick ___ 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] Connectors glue lined heatshrink
Hi Dave, Not quite, they do use irradiation crosslinking to make the heatshrink tube, but the hotmelt adhesive is a completly separate layer. They do different combinations of tube and glue for different applications. Really cool are the pre-forms that look like a parallel tube but shrink down into two sises with a smooth transition. The mold the final shape and then streach it (hot) into a parallel tube. They also do multiple entry versions. Raychem are leaders in this. They also do shrink metal parts. Robert G8RPI. From: DaveH i...@blackmountainforge.com To: n...@verizon.net; 'Discussion of precise time and frequency measurement' time-nuts@febo.com Sent: Sunday, 14 April 2013, 3:08 Subject: Re: [time-nuts] Connectors Kind of a cool technology -- they bombard the outside of the tube with an electron beam that cross-links the polymer but leaves the inside untouched. The outside becomes hard but still shrinks. The inside just melts into a goo when heated. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Peter Gottlieb Sent: Saturday, April 13, 2013 15:24 To: time-nuts@febo.com Subject: Re: [time-nuts] Connectors Think of heat shrink with a layer of hot melt glue on the inside. Such stuff is used in most outdoor and especially underground utility wiring. Shrink the tubing and it melts the glue and the contracting tubing forces the glue into every crevice making a great waterproof splice. On 4/13/2013 5:07 PM, Hal Murray wrote: Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. ___ 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] Connectors
If using silicone oil or grease you do need to keep the water glass issue in mind. If exposed to chlorine or phosphorus in can convert to straight silicon leaving a glass coating. Silicon oil containing contact cleaners used in a marine environment can be an issue. phosphor-bronze alloy contacts as well. Electrical arcing will do it too. A dry connector without phosphorus containing alloys and solid contact (no arcing) is ok though. Personally I use the 3m self fusing silicone tape with 3M 88 overwrap on just about anything outside. On 4/12/13 10:21 AM, Brooke Clarke wrote: Hi: Water has a dielectric constant around 60 compared to plastic that just over 2. So if water gets into the connection there's going to be problems. It turns out that Silicon grease has a dielectric constant very close to plastic so filling an open RF connector with Silicon grease prior to mating them is a great way to water proof the joint. See Weatherproofing at http://www.prc68.com/I/OE254.shtml Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html brent evers wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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
Re: [time-nuts] Connectors
Scotchkote! Yes - Thank you for the correction! The other could lead to disaster! Nope - not ex-navy. Its pretty standard practice in the offshore world. My time was spent on research vessels down in Antarctica. Apologies for the mix-up. Brent On Fri, Apr 12, 2013 at 3:37 PM, paul swed paulsw...@gmail.com wrote: OK this is crazy I answered out of sequence not realizing my email had never been sent. Describing Navy and ScotchKote... Regards Paul WB8TSL On Fri, Apr 12, 2013 at 3:36 PM, paul swed paulsw...@gmail.com wrote: Brent You must be ex-Navy. We did the same thing with a final coat of liquid rubber. 3M scotch coat. On the ships I could open a connector that had been to sea for years and the connectors were clean as they were when installed. I still use this approach. Very solid and as I mentioned earlier in the thread I use the F connectors for lots of things. On Fri, Apr 12, 2013 at 12:01 PM, brent evers brent.ev...@gmail.com wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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
Re: [time-nuts] Connectors
OK, so we seem to have: 1) Scotch 130 rubber tape 2) Scotch 33 electrical tape 3) Scotchkote in that order. So the rubber tape waterproofs the connection and the scotch kote protects it from UV, so what does the electrical tape do? Or maybe, the electrical tape does the waterproofing and the rubber tape just keeps goo off the connector. But of course, that can be done with the well known technique of winding the connector with electrical tape adhesive side out. Do we know that the rubber tape is not UV proof? Or none of the above. Can someone in the know clarify this? Thanks, Rick ___ 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] Connectors
Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. -- These are my opinions. I hate spam. ___ 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] Connectors
Rick It is a very rare time I get to answer you. The plastic tape holds the rubber end initially, adds another layer of wx, and in reality is sacrificial to UV over the years. First the liquid rubber gives up. Then the plastic. Thats a big clue when it gets ratty. Time to change. Fact is even at that point it will hold for a very long time beyond that point. Each layer helps to hold things together. My experience was in the Navy aboard ship. But I have used the method for many years on the tower for all of the heliax and all other connections. What I would love to know is what makes the liquid rubber, liquid. It evaporates off over time (And it seems no matter how hard you try to seal the container) and that always kills off the can of scotchkote. I will bet I waste 1/2 a can that way. Regards Paul WB8TSL On Sat, Apr 13, 2013 at 2:56 PM, Richard (Rick) Karlquist rich...@karlquist.com wrote: OK, so we seem to have: 1) Scotch 130 rubber tape 2) Scotch 33 electrical tape 3) Scotchkote in that order. So the rubber tape waterproofs the connection and the scotch kote protects it from UV, so what does the electrical tape do? Or maybe, the electrical tape does the waterproofing and the rubber tape just keeps goo off the connector. But of course, that can be done with the well known technique of winding the connector with electrical tape adhesive side out. Do we know that the rubber tape is not UV proof? Or none of the above. Can someone in the know clarify this? Thanks, Rick __**_ 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.
Re: [time-nuts] Connectors
On Sat, 13 Apr 2013 14:07:05 -0700, Hal Murray hmur...@megapathdsl.net wrote: Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. They make adhesive lined or dual wall heat shrink tubing for applications requiring a better seal: http://www.3m.com/product/information/Heat-Shrink-Adhesive-Lined-Tubing.html http://www.buyheatshrink.com/heatshrinktubing/3to1adhesive.htm ___ 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] Connectors
Think of heat shrink with a layer of hot melt glue on the inside. Such stuff is used in most outdoor and especially underground utility wiring. Shrink the tubing and it melts the glue and the contracting tubing forces the glue into every crevice making a great waterproof splice. On 4/13/2013 5:07 PM, Hal Murray wrote: Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. ___ 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] Connectors
Yes its from the heat shrink. When they shrink the wrap it forms an air proof seal. Regards Paul WB8TSL On Sat, Apr 13, 2013 at 5:07 PM, Hal Murray hmur...@megapathdsl.net wrote: Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. -- These are my opinions. I hate spam. ___ 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] Connectors
Kind of a cool technology -- they bombard the outside of the tube with an electron beam that cross-links the polymer but leaves the inside untouched. The outside becomes hard but still shrinks. The inside just melts into a goo when heated. Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Peter Gottlieb Sent: Saturday, April 13, 2013 15:24 To: time-nuts@febo.com Subject: Re: [time-nuts] Connectors Think of heat shrink with a layer of hot melt glue on the inside. Such stuff is used in most outdoor and especially underground utility wiring. Shrink the tubing and it melts the glue and the contracting tubing forces the glue into every crevice making a great waterproof splice. On 4/13/2013 5:07 PM, Hal Murray wrote: Can someone in the know clarify this? I'm not in the know. Several years ago, I found a short chunk of coax that the cable TV guys had left on the ground. It included a piece of heavy wall shrink tubing. There was a layer of sticky goop between the coax and the shrink tubing. ___ 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] Connectors
On Sat, Apr 13, 2013 at 6:58 AM, brent evers brent.ev...@gmail.com wrote: Scotchkote! Yes - Thank you for the correction! The other could lead to disaster! Nope - not ex-navy. Its pretty standard practice in the offshore world. My time was spent on research vessels down in Antarctica. I used to own a sailboat. I used almost the same thing. Liquid rubber' as sold at Home Depot it comes in a can with a brush attached to the lid. It was especially good for bolted connection used on batteries. The boat had 6 large (50+ pounds each) lead acid wet cells and then each connects to a 250 amp fuze and a switch and so on. There were many bolted connecters with #00 cable. Quite a few antenna leads too with GPS, HF and VHF radios and radar. Nothing like on a large ship but still tons of wire. In all of this I never have much trouble with the connectors. Problems where with the wire itself. It would be nicked or abraded or the space between the connecter and insolation would allow water or damp air to get in and it would wick down the cable and after time corrode the coper and turn it into green goo. The design of these new kind of compression connectors, the ones that require axial force to install is that there is a rube seal that goes over the outer insolation jacket. This seal keep water out of the most critical place. The liquid rubber paint works well too. -- 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.
Re: [time-nuts] Connectors
Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable … If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] Connectors
Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable … If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] Connectors
It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] Connectors
Yes, I use those compression types, too, for example http://www.reichelt.de/F-Anschluss/IK-FKPS-49/3/index.html?;ACTION=3;LA=446;ARTICLE=87371;GROUPID=3538;artnr=IK+FKPS+49 Of course, everything has to match, the cable, the connector, the pliers. Be careful with the inner conductor. It's good up to 2 GHz, I didn't measure it above that frequency. Volker Am 11.04.2013 22:21, schrieb Gordon Batey: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] Connectors
BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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.
Re: [time-nuts] Connectors
brent evers wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. What are you referring to as scotchguard? I thought that was a discontinued waterproofing spray for fabric. You must be talking about something else. Rick ___ 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] Connectors
Hi: Water has a dielectric constant around 60 compared to plastic that just over 2. So if water gets into the connection there's going to be problems. It turns out that Silicon grease has a dielectric constant very close to plastic so filling an open RF connector with Silicon grease prior to mating them is a great way to water proof the joint. See Weatherproofing at http://www.prc68.com/I/OE254.shtml Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html brent evers wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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.
Re: [time-nuts] Connectors
On 4/12/2013 1:58 PM, Rick Karlquist wrote: What are you referring to as scotchguard? I thought that was a discontinued waterproofing spray for fabric. You must be talking about something else. He may have meant Scotchkote, as in Scotchkote Electrical Coating FD. BTW, Scotchgard is used for multiple products, and the fabric spray isn't discontinued, just reformulated. ___ 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] Connectors
Ohhh man. Yes wrong product ScotchKote. Regards Paul On Fri, Apr 12, 2013 at 2:48 PM, Mike S mi...@flatsurface.com wrote: On 4/12/2013 1:58 PM, Rick Karlquist wrote: What are you referring to as scotchguard? I thought that was a discontinued waterproofing spray for fabric. You must be talking about something else. He may have meant Scotchkote, as in Scotchkote Electrical Coating FD. BTW, Scotchgard is used for multiple products, and the fabric spray isn't discontinued, just reformulated. __**_ 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.
Re: [time-nuts] Connectors
OK this is crazy I answered out of sequence not realizing my email had never been sent. Describing Navy and ScotchKote... Regards Paul WB8TSL On Fri, Apr 12, 2013 at 3:36 PM, paul swed paulsw...@gmail.com wrote: Brent You must be ex-Navy. We did the same thing with a final coat of liquid rubber. 3M scotch coat. On the ships I could open a connector that had been to sea for years and the connectors were clean as they were when installed. I still use this approach. Very solid and as I mentioned earlier in the thread I use the F connectors for lots of things. On Fri, Apr 12, 2013 at 12:01 PM, brent evers brent.ev...@gmail.comwrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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.
Re: [time-nuts] Connectors
Actually though I spelled it wrong I did have the right product. Regards Paul WB8TSL On Fri, Apr 12, 2013 at 3:31 PM, paul swed paulsw...@gmail.com wrote: Ohhh man. Yes wrong product ScotchKote. Regards Paul On Fri, Apr 12, 2013 at 2:48 PM, Mike S mi...@flatsurface.com wrote: On 4/12/2013 1:58 PM, Rick Karlquist wrote: What are you referring to as scotchguard? I thought that was a discontinued waterproofing spray for fabric. You must be talking about something else. He may have meant Scotchkote, as in Scotchkote Electrical Coating FD. BTW, Scotchgard is used for multiple products, and the fabric spray isn't discontinued, just reformulated. __**_ 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.
Re: [time-nuts] Connectors
I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable … If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] Connectors
Brent You must be ex-Navy. We did the same thing with a final coat of liquid rubber. 3M scotch coat. On the ships I could open a connector that had been to sea for years and the connectors were clean as they were when installed. I still use this approach. Very solid and as I mentioned earlier in the thread I use the F connectors for lots of things. On Fri, Apr 12, 2013 at 12:01 PM, brent evers brent.ev...@gmail.com wrote: BTW - 3M Scotch rubber tape is regularly used in the offshore industry to make waterproof connections to 6000m/10,000psi. I use it on any/all outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors as well. I cover the rubber tape with a layer of electrical tape (Super 88), and then a layer of scotchguard over that. Scotch rubber tape comes in both a linered (23), and liner-less (130C) version. I far prefer the liner-less 130c. To make sure this is time related, my two Thunderbolt antenna connectors are also sealed this way. Brent On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley robkimber...@btinternet.com wrote: It's a very useful material, also called Self Amalgamating Tape. Been using it for years for all sorts of outside cable work. Rob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: 12 April 2013 14:00 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Connectors Sorry, not neoprene but self-sealing polyisobutyl tape, very effective for the outdoor antenna work**. I have recently opened a sealed connection, after 10 years, and the protected connector appears as new. On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani azelio.bori...@screen.itwrote: I use neoprene tape to make really water tight connections for all type of connectors. On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp li...@rtty.us wrote: Hi The fancy F connectors are indeed waterproof if: 1) You have the right cable 2) The cable and connector match up 3) The tool and the connector match up The auction sites are a great place to get samples of connectors and tools that apparently work with no known cable . If you are not careful about the trim on the dielectric / positioning , they can have issues above 1 or 2 GHz. Even a lot of care they don't really do the job above 5 GHz. Exactly where they drop out depends (of course) on your return loss expectations. Bob On Apr 11, 2013, at 4:21 PM, Gordon Batey gpba...@wildblue.net wrote: Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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.
[time-nuts] Connectors
Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA ___ 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] Connectors
Steve, Several of them smashed flat, stacked up, and jammed under a door make a low-quality door stop... Steve WB0DBS On Apr 11, 2013, at 11:10 AM, steve gunsel st...@sgteq.com wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA ___ 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] Connectors
The quality varies a LOT. The good ones are the water proof ones they use outdoors. They are made to fit RG6 quad shielded cable and must be installed with a special tool. They are 75 ohm connectors. There are also many junk f-connectors used with rg58 and rg59. On Thu, Apr 11, 2013 at 9:10 AM, steve gunsel st...@sgteq.com wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA ___ 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. -- 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.
Re: [time-nuts] Connectors
They're half decent 75 ohm connectors out to about a GHz if you do that. On Thu, Apr 11, 2013 at 10:10 AM, steve gunsel st...@sgteq.com wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA __**_ 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.
Re: [time-nuts] Connectors
useful and I use them at hf for rcving antennas and such. The quality is all over the place but have used them up to 2 Ghz on occasion. Regards Paul WB8TSL On Thu, Apr 11, 2013 at 12:39 PM, Robert Darlington rdarling...@gmail.comwrote: They're half decent 75 ohm connectors out to about a GHz if you do that. On Thu, Apr 11, 2013 at 10:10 AM, steve gunsel st...@sgteq.com wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nuts 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] Connectors
Hi Steve: Many GPS receivers are designed with Type-F RF inputs in order to make use of the low cost TV coax. But even if a GPS receiver has a 50 Ohm RF input you can still use 75 Ohm feed line, see my low cost 4-way splitter: http://www.prc68.com/I/4GPS.shtml For most hobbyist use (nano second timing) this works very well, but if you're into pico second timing then it's a whole other ball game. Have Fun, Brooke Clarke, N6GCE http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html steve gunsel wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA ___ 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] Connectors
The F connector makes up an extremely cheap connection for TV and satellite broadcast antenna cable. I use it even for my GPS antenna cable but I'd rather not recommend it when a stable and repeatable connection is needed. On Thu, Apr 11, 2013 at 6:10 PM, steve gunsel st...@sgteq.com wrote: Hi, Not too long ago there was an interesting discussion here about RF connectors. I have always wondered about the F connector - used by the boxload in TV distribution. Are they any good for anything else? Just curious. Thanks. Steve - N8MYA __**_ 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.
Re: [time-nuts] Connectors
On Thu, Apr 11, 2013 at 11:49 AM, Brooke Clarke bro...@pacific.net wrote: Hi Steve: Many GPS receivers are designed with Type-F RF inputs in order to make use of the low cost TV coax. But even if a GPS receiver has a 50 Ohm RF input you can still use 75 Ohm feed line, Yes they work but more than that. At least according to Trimble they are preferred connector type. The user manual that goes with my Trimble Thunderbolt (Version 5.0 Nov 03) says to use f-connectors and RG-59 for runs up to about 100 feet. The factory supplied kit from Trimble has 75 feet of this kind of wire. The thing to note is that while the above Trimble parts work OK for a GPS antenna it is not water proof and if left outdoors in the rain for a few years will fail. The better connectors are compression not crimp' The easy way to tell the difference is the compressor tool applies a force that is in parallel with the center conductor while a crimp tool applies the force at a 90 degree angle to the center conductor. Also while you can kind of fake it by using improvised tools to attach a crimp type connector you must have the right tool to attach a compression type. -- 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.
Re: [time-nuts] Connectors
Greetings, I have used the longitudinal compression F connectors for some time now with several GPS units and RG-6 cable. They certainly appear to be waterproof and quite sturdy. Not inexpensive but very serviceable. I found a kit with the installation tool and connectors and separate connectors at LOWES that does a nice job. I also found one for BNC that use the same principle but have not used it yet. Gordon WA4FJC ___ 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] connectors Re: FW: Re: Low-Cost 6+ GHz Prescaler board for
John Allen wrote: A few notes about the connector. First, I hate BNC connectors. But the BNC is useable to 11 GHz (No vswr spec.), and has a VSWR spec. of 1.3:1 up to 4 GHz. (See link below, about half way down the page.) http://www.amphenolrf.com/products/bnc.asp?N=0sid=4BAAA780568BE17F; The application is not a precision one except for frequency - Power transfer inaccuracy due to return loss is not a big deal here, we are not using it in a VNA or power meter etc. PS: Would anybody be interested in testing an SMA to BNC-F and BNC-M to SMA pair on a VNA? Further, some BNC adapters (to SMA) are specified. to 8 GHz. With 1.25:1 VSWR Also - here is a BNC to SMA bulkhead with 10 GHz VSWR max of 1.4:1 http://www.fairviewmicrowave.com/adaptersbncsma.htm (Bottom middle). Now if only we could find a SMA to SMA bulkhead that fit in a BNC mounting hole... John Allen K1AE I think I've seen hermetic sealed feedthrough for applications like vacuum chambers that fit in a larger than normal hole. But they're probably also really, really expensive. ___ 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] connectors Re: FW: Re: Low-Cost 6+ GHz Prescaler board for
Hi John: When HP came out with the first VNA (8410) I attended one of the demos. Part of that was testing a BNC cable over the microwave range. It worked much better than I expected. It turns out that the cores of a type-N, TNC and BNC connector are all the same and they will properly interface with each other (after some modification to allow it). The problem with panel mount BNC connectors is the back side where the impedance is not controlled. If you use a panel mount BNC-BNC connector it's impedance is quite good. Trompeter used to make a series of connectors (N, TNC, BNC) that all had the same panel side outline. I used them in a family of Wilkinson power dividers. Have Fun, Brooke Clarke http://www.PRC68.com jimlux wrote: John Allen wrote: A few notes about the connector. First, I hate BNC connectors. But the BNC is useable to 11 GHz (No vswr spec.), and has a VSWR spec. of 1.3:1 up to 4 GHz. (See link below, about half way down the page.) http://www.amphenolrf.com/products/bnc.asp?N=0sid=4BAAA780568BE17F; The application is not a precision one except for frequency - Power transfer inaccuracy due to return loss is not a big deal here, we are not using it in a VNA or power meter etc. PS: Would anybody be interested in testing an SMA to BNC-F and BNC-M to SMA pair on a VNA? Further, some BNC adapters (to SMA) are specified. to 8 GHz. With 1.25:1 VSWR Also - here is a BNC to SMA bulkhead with 10 GHz VSWR max of 1.4:1 http://www.fairviewmicrowave.com/adaptersbncsma.htm (Bottom middle). Now if only we could find a SMA to SMA bulkhead that fit in a BNC mounting hole... John Allen K1AE I think I've seen hermetic sealed feedthrough for applications like vacuum chambers that fit in a larger than normal hole. But they're probably also really, really expensive. ___ 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] connectors Re: FW: Re: Low-Cost 6+ GHz Prescaler board for
Hi Broke, I think it stays not to discussion, that a better BNC can be usable up to some GHz, but the longtime life cycle is ( through often using impedance changings/unsure contacts) _I think_ clear worser as TNC/N... Have good time! (Im over longtime time-nuts reader ) Karesz 2010/3/26 Brooke Clarke bro...@pacific.net Hi John: When HP came out with the first VNA (8410) I attended one of the demos. Part of that was testing a BNC cable over the microwave range. It worked much better than I expected. It turns out that the cores of a type-N, TNC and BNC connector are all the same and they will properly interface with each other (after some modification to allow it). The problem with panel mount BNC connectors is the back side where the impedance is not controlled. If you use a panel mount BNC-BNC connector it's impedance is quite good. Trompeter used to make a series of connectors (N, TNC, BNC) that all had the same panel side outline. I used them in a family of Wilkinson power dividers. Have Fun, Brooke Clarke http://www.PRC68.com jimlux wrote: John Allen wrote: A few notes about the connector. First, I hate BNC connectors. But the BNC is useable to 11 GHz (No vswr spec.), and has a VSWR spec. of 1.3:1 up to 4 GHz. (See link below, about half way down the page.) http://www.amphenolrf.com/products/bnc.asp?N=0sid=4BAAA780568BE17F; The application is not a precision one except for frequency - Power transfer inaccuracy due to return loss is not a big deal here, we are not using it in a VNA or power meter etc. PS: Would anybody be interested in testing an SMA to BNC-F and BNC-M to SMA pair on a VNA? Further, some BNC adapters (to SMA) are specified. to 8 GHz. With 1.25:1 VSWR Also - here is a BNC to SMA bulkhead with 10 GHz VSWR max of 1.4:1 http://www.fairviewmicrowave.com/adaptersbncsma.htm (Bottom middle). Now if only we could find a SMA to SMA bulkhead that fit in a BNC mounting hole... John Allen K1AE I think I've seen hermetic sealed feedthrough for applications like vacuum chambers that fit in a larger than normal hole. But they're probably also really, really expensive. ___ 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] Connectors for the Datum LPRO Rubidium Oscillator
I have ten-pin female connectors for the LPRO Rubidium Oscillators. The cost for two connectors, postage paid in the US is $2.50. If you use these connectors, don't use too much heat and use small wires; there are a lot of pins in a small area. I will accepts checks and PayPal ([EMAIL PROTECTED] (mailto:[EMAIL PROTECTED]) ). Stuart Landau 23452 Justice St. West Hills, CA 91304 Thanks for looking, Stuart K6YAZ **New MapQuest Local shows what's happening at your destination. Dining, Movies, Events, News more. Try it out (http://local.mapquest.com/?ncid=emlcntnew0002) ___ 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.
