dave wrote:> > The easiest way to spot good headend cable was to try to bend it. It > drapes, like mic cable; not stiff.The easiest way was to look at the imprint: 'Belden headend cable'. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.
Unsolderable wire?
Started by ●January 19, 2014
Reply by ●January 20, 20142014-01-20
Reply by ●January 20, 20142014-01-20
Kennedy wrote:> > On 20/01/2014 7:38 PM, Phil Allison wrote: > > "Tim Williams - Wanker & TROLL" > > > > > > Was I the only one to see this predictable response coming & get a > giggle out of it?Phil always advertises that he's a troll. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.
Reply by ●January 20, 20142014-01-20
Kennedy wrote:> > On 20/01/2014 7:45 PM, Phil Allison wrote: > > > > "Kennedy = Kunt" > > > > > > FOAD - you stinking autistic MORON > > > > Settle down Phil, one day you're going to blow a gasket! :)Why put it off? Who would mourn? -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.
Reply by ●January 20, 20142014-01-20
On 01/20/2014 12:49 PM, Jeff Liebermann wrote:> On Mon, 20 Jan 2014 11:10:46 -0500, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> On 01/20/2014 08:46 AM, dave wrote: >>> Use Snap-N-Seal type F-connectors. They are moisture proof and >>> positively crimp correctly. > >> I don't have TV at home, and there's no way I'd use F connectors for >> anything but entertainment. >> Cheers >> Phil Hobbs > > Ok, I'll bite. What's wrong with F-connectors? There are zillions > installed on indoor and outdoor CATV installations with no failures or > issues. Certainly there are connectors with better specifications, > but for the intended purpose and cost ($0.30/ea), F-connectors are > more than adequate. The only real problem I've found is the wide > variety of cables claiming to be RG-6/u. Making a connector that will > fit all these RG-6/u mutations is tricky, but T&B has done a decent > job with their "red" SNS1P6U Snap-N-Seal connectors: > <http://www.ebay.com/itm/221344116756> > > So, what's wrong with F-connectors and what would you recommend the > CATV industry use instead? >If the CATV industry likes them, well, I'm happy they're happy. Instrument use is quite a different regime. F connectors use the centre conductor of the coax as the contact, and are very susceptible to damage with repeated mating cycles. The ones I've seen are also fairly far from constant-impedance. BNCs and SMAs for me. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Reply by ●January 20, 20142014-01-20
"DecadentLinuxUserNumeroUno" <DLU1@DecadentLinuxUser.org> wrote in message news:ap5qd95f2cprv181vtan18uieifd9g55ob@4ax.com...>>> "Tim Williams - Wanker & TROLL" >>> >> >>Was I the only one to see this predictable response coming & get a >>giggle out of it? > > T. W. == W & T > > > Naaaaahhh!!! > > He has smarts.Smarts? I'll have you know I've been called worse! Tim (only an asshole on the internet) -- Seven Transistor Labs Electrical Engineering Consultation Website: http://seventransistorlabs.com
Reply by ●January 20, 20142014-01-20
On Mon, 20 Jan 2014 16:13:00 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>On 01/20/2014 12:49 PM, Jeff Liebermann wrote: >> On Mon, 20 Jan 2014 11:10:46 -0500, Phil Hobbs >> <pcdhSpamMeSenseless@electrooptical.net> wrote: >> >>> On 01/20/2014 08:46 AM, dave wrote: >>>> Use Snap-N-Seal type F-connectors. They are moisture proof and >>>> positively crimp correctly. >> >>> I don't have TV at home, and there's no way I'd use F connectors for >>> anything but entertainment. >>> Cheers >>> Phil Hobbs >> >> Ok, I'll bite. What's wrong with F-connectors? There are zillions >> installed on indoor and outdoor CATV installations with no failures or >> issues. Certainly there are connectors with better specifications, >> but for the intended purpose and cost ($0.30/ea), F-connectors are >> more than adequate. The only real problem I've found is the wide >> variety of cables claiming to be RG-6/u. Making a connector that will >> fit all these RG-6/u mutations is tricky, but T&B has done a decent >> job with their "red" SNS1P6U Snap-N-Seal connectors: >> <http://www.ebay.com/itm/221344116756> >> >> So, what's wrong with F-connectors and what would you recommend the >> CATV industry use instead?>If the CATV industry likes them, well, I'm happy they're happy.The CATV industry is never happy. If it were happy, innovation would cease and the status quo would become permanent.>Instrument use is quite a different regime. F connectors use the centre >conductor of the coax as the contact, and are very susceptible to damage >with repeated mating cycles. The ones I've seen are also fairly far >from constant-impedance.I believe that I mumbled something about "for the intended purpose". I don't think anyone uses F-connectors for precision test equipment. They're not really good enough. Looking at the pile, most of my CATV specific test equipment uses BNC connectors. However, that's not because the F-connector is in some way electrically inferior. It's because the F-connector receptacles were not designed to survive repeated insertion/removal cycles. The few that have built in F-connectors allow for easy replacement, such as my Wavetek SAM-1000 which uses a panel mounted F barrel adapter. The F-connector is certainly not constant impedance. On a TDR, the bump is rather obvious. Yet, some cable and connector combinations are rated and tested to 4.5GHz: <http://www.tselectronic.com/shop/product/1694A-Belden-4.5GHz-RG6-U-Precision-Video-Cable-for-Analog-and-Digital-Applications/1026> The recommended connectors are T&B SNS1P6 or FSNS6U compression F-connectors. I partly agree with you about center conductor problems. I assume that you're referring to the copper plated steel center conductor, found in most cheap RG-6/u cables, which is not intended for repeated insertion/extraction cycles. Still, the rating is 500 insertion/extraction cycles minimum. The copper will eventually scrape off. However, solid copper center conductor RG-6/u (such as Belden 1694A) works quite nicely, without any damage. I couldn't find a spec for insertion/extraction cycles for 1694A.>BNCs and SMAs for me.Crimp or compression plugs, in quantities of 100 on eBay: F-connector $0.30/ea SMA male $0.70/ea BNC male $1.00/ea For test equipment, the price difference is not enough to justify using the cheapest. For CATV, which consumes connectors by the millions, every penny counts. Thanks.>Cheers >Phil Hobbs-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
Reply by ●January 20, 20142014-01-20
On Mon, 20 Jan 2014 15:42:19 -0500, "Michael A. Terrell" <mike.terrell@earthlink.net> wrote:> The easiest way was to look at the imprint: 'Belden headend cable'.Which end is the head? (Sorry, I couldn't resist). -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
Reply by ●January 20, 20142014-01-20
On 1/20/2014 6:41 PM, Jeff Liebermann wrote:> On Mon, 20 Jan 2014 16:13:00 -0500, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> On 01/20/2014 12:49 PM, Jeff Liebermann wrote: >>> On Mon, 20 Jan 2014 11:10:46 -0500, Phil Hobbs >>> <pcdhSpamMeSenseless@electrooptical.net> wrote: >>> >>>> On 01/20/2014 08:46 AM, dave wrote: >>>>> Use Snap-N-Seal type F-connectors. They are moisture proof and >>>>> positively crimp correctly. >>> >>>> I don't have TV at home, and there's no way I'd use F connectors for >>>> anything but entertainment. >>>> Cheers >>>> Phil Hobbs >>> >>> Ok, I'll bite. What's wrong with F-connectors? There are zillions >>> installed on indoor and outdoor CATV installations with no failures or >>> issues. Certainly there are connectors with better specifications, >>> but for the intended purpose and cost ($0.30/ea), F-connectors are >>> more than adequate. The only real problem I've found is the wide >>> variety of cables claiming to be RG-6/u. Making a connector that will >>> fit all these RG-6/u mutations is tricky, but T&B has done a decent >>> job with their "red" SNS1P6U Snap-N-Seal connectors: >>> <http://www.ebay.com/itm/221344116756> >>> >>> So, what's wrong with F-connectors and what would you recommend the >>> CATV industry use instead? > >> If the CATV industry likes them, well, I'm happy they're happy. > > The CATV industry is never happy. If it were happy, innovation would > cease and the status quo would become permanent. > >> Instrument use is quite a different regime. F connectors use the centre >> conductor of the coax as the contact, and are very susceptible to damage >> with repeated mating cycles. The ones I've seen are also fairly far >>from constant-impedance. > > I believe that I mumbled something about "for the intended purpose". I > don't think anyone uses F-connectors for precision test equipment. > They're not really good enough. Looking at the pile, most of my CATV > specific test equipment uses BNC connectors. However, that's not > because the F-connector is in some way electrically inferior. It's > because the F-connector receptacles were not designed to survive > repeated insertion/removal cycles. The few that have built in > F-connectors allow for easy replacement, such as my Wavetek SAM-1000 > which uses a panel mounted F barrel adapter. > > The F-connector is certainly not constant impedance. On a TDR, the > bump is rather obvious. Yet, some cable and connector combinations > are rated and tested to 4.5GHz: > <http://www.tselectronic.com/shop/product/1694A-Belden-4.5GHz-RG6-U-Precision-Video-Cable-for-Analog-and-Digital-Applications/1026> > The recommended connectors are T&B SNS1P6 or FSNS6U compression > F-connectors. > > I partly agree with you about center conductor problems. I assume > that you're referring to the copper plated steel center conductor, > found in most cheap RG-6/u cables, which is not intended for repeated > insertion/extraction cycles. Still, the rating is 500 > insertion/extraction cycles minimum. The copper will eventually > scrape off. However, solid copper center conductor RG-6/u (such as > Belden 1694A) works quite nicely, without any damage. I couldn't find > a spec for insertion/extraction cycles for 1694A. > >> BNCs and SMAs for me. > > Crimp or compression plugs, in quantities of 100 on eBay: > F-connector $0.30/ea > SMA male $0.70/ea > BNC male $1.00/ea > For test equipment, the price difference is not enough to justify > using the cheapest. For CATV, which consumes connectors by the > millions, every penny counts. > > Thanks. > >> Cheers >> Phil Hobbs >Sure, horses for courses. I'm not telling them how to run their lives, because I couldn't care less about their lives. ;) (Well, as individuals, sure, but as for the industry, if CATV went away completely tomorrow, it would suit me fine--provided only that they took their tarts and talking heads with them.) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Reply by ●January 20, 20142014-01-20
On Mon, 20 Jan 2014 18:55:56 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>Sure, horses for courses. I'm not telling them how to run their lives, >because I couldn't care less about their lives. ;) (Well, as >individuals, sure, but as for the industry, if CATV went away completely >tomorrow, it would suit me fine--provided only that they took their >tarts and talking heads with them.) >Cheers >Phil HobbsI assure you that the selection of RF connector will have no effect on CATV content quality. I like the tarts, but can do without the talking heads. For what little it's worth, I didn't own a TV for about 15 years. Except for being somewhat culturally deprived, I didn't miss TV in the slightest. However, I then picked up a contract to review some technical videos and needed a TV and VCR to play them. I soon found myself watching broadcast TV, buying DVD's, putting together a media center, subscribing to DirecTV, Netflix, etc. Today, I find that I can't sleep without the TV running. I'm now watching a 1931 Boris Karloff movie as I type. I'm addicted. Hint: Don't judge connectors by the content they carry. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
Reply by ●January 20, 20142014-01-20
On 1/20/2014 8:41 PM, Jeff Liebermann wrote:> On Mon, 20 Jan 2014 18:55:56 -0500, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> Sure, horses for courses. I'm not telling them how to run their lives, >> because I couldn't care less about their lives. ;) (Well, as >> individuals, sure, but as for the industry, if CATV went away completely >> tomorrow, it would suit me fine--provided only that they took their >> tarts and talking heads with them.) >> Cheers >> Phil Hobbs > > I assure you that the selection of RF connector will have no effect on > CATV content quality. I like the tarts, but can do without the > talking heads.Nah, sufficiently crappy connectors could improve the content a lot. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
