Re: [Repeater-Builder] WACOM WP-641 Duplexer
Bob Dengler wrote: At 10/15/2004 09:19 AM, you wrote: Duplexer companies that use RG8, 58, 213, or any of that noisy crap should be "burned at the stake" :) ...including Phelps-Dodge? I don't think so. The only problem with the coaxes you mention is that the braid is not solid or silver-plated. If any water gets inside the coax in any way, the copper braid eventually oxidizes generates IMD. The noise you get is probably mixing between the TX carrier its sidebands, which you induce when you move the coax with it's millions of point-contact diodes. If the duplexer is kept in a controlled environment (not outside), the cables shoudn't degrade. I had a piece of RG-8/X used as a pigtail to a portable repeater antenna that looked perfectly good on the outside, but generated noise such as you describe. Cutting it open revealed the water infiltration. In fact, it only generated noise when flexed in the area where water got in. Further down the coax where the braid still appeared shiny there was no noise when flexed. I replaced the pigtail with RG-142 that solved the problem. The fact that RG-142 is double-shielded is incidental; it's the silver plated shield that prevents IMD generation. And may I add, the BETTER isolation from other "artifacts" coming in through the shield!! Nothing less than high quality coax for those of us that don't have perfect sites that are climate controlled and noise free. James Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
I recently wondered the same thing about a Phelps Dodge six cavity duplexer here. I found that all six cables including the two to the tee connector were the same length: 8-3/4 inches tip to tip on PL-259 connectors. (http://repeater.w4zt.com/duplexer/) The problem here was noise, lots of it, and anytime one of those cables was moved even slightly the noise became much worse. These original cables were made from PDC's own house branded RG-8 cable and supplied pre-tuned on 146.625 MHz. I decided to replace the cables and assumed the same thing that Eric pointed out below, whatever length works, and the base assumption minimum length to fit worked for me. I replaced the house branded RG-8 with jumpers I made from Andrews FSJ1-50A 1/4 Superflex Heliax. I realized the VF was greater but shorter cables wouldn't reach so I made them the same as original. Details of my superflex to PL-259 connector project are here: http://repeater.w4zt.com/duplexer/superflex/. After completing the superflex mod I also welded up a bracket to hard mount the tee connector. I reassembled the harness and checked the duplexer. It was back to spec and NO NOISE! Move them, bang them, shove them, no effect. Problem solved! In this case, the difference in cable length made no measurable difference in performance but the move to the 100% shielding of the superflex heliax made a huge difference. If you're making cables, I would highly suggest you consider making them from the superflex heliax so you can completely eliminate the leakage and noise problems from your duplexer. 73, Tony W4ZT At 12:33 AM 10/13/2004, you wrote: Neal, The best answer to your question is probably: Whatever works! Both Bill Lieske of EMR and Len Pringle of Telewave have given me pretty much the same answer about jumper lengths for duplexers they manufacture. In most duplexers, the cavities are individually tuned for the desired insertion loss by adjusting the coupling loops or probes, and each cavity is tuned for the desired pass loss and notch depth. This is an iterative process, and eventually the technician has two or three high pass cavities that are identical, and two or three low pass cavities that are identical. At this point the technician selects a test jumper from a rack of pre-made jumpers that are arranged in 1/2 inch (usually) increments. From long experience, he picks one that he knows is close to being the right length. If each cavity had 0.6 dB insertion loss, he looks for a jumper that results in about 1.2 dB loss for the pair. If the loss is more than 1.3 dB, he'll try a shorter or a longer jumper until he finds one that gives the minimum combined loss. If this is a six-cavity duplexer, he'll add the third cavity and repeat the process, looking for about 2.0 dB total loss. If the customer wanted a deeper notch, each cavity's loops might have been set for a different coupling, which means that the optimum jumper cable lengths might not be the same. So, the jumper lengths are not always pre-calculated. Some duplexer manufacturers have just two or three cable harnesses that they use for all duplexers in a particular band, and these are compromises. Sad to say, many commercial installers have no interest in optimizing their installations, because that effort is time-consuming and is therefore costly. Hey, if it works, that's good enough! A purist does not embrace this one-size-fits-all approach! Regarding jumper cables, they should always be double-shielded; RG-214, RG-142, or RG-400 are good choices. Do not use RG-58, RG-8, or RG-213 because those are single-shield cables. 73, Eric Lemmon WB6FLY Neal Newman wrote: BTW the cans are WP-641's Neal Newman wrote: Hey Guys.. I am having a problem with my Wacom Cans... I am just curious what should the length be for the 4 jumpers.. the 2 between the cans and the 2 that meet at the output Tee. the repeater is on 145.230 and what type cable should be used ( I think it's RG-213?) I noticed that one cable is teflon... and 2 seem longer than the other 2.. I tookmMeasurements the jumpers between the cans measure 8.5 and 8.75 the 2 jumpers between the cans and the output tee measure 11.77 and 13.5 (teflon) I know this is not correct... Serves me right for loaning out the cans to friends club for a few years. For some reason I always thought all 4 cables should be about 13 but I may be wrong... Does anyone know the correct length? BTW I measured tip to tip of the pl-259's Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] WACOM WP-641 Duplexer
At 10/15/2004 09:19 AM, you wrote: Duplexer companies that use RG8, 58, 213, or any of that noisy crap should be burned at the stake :) ...including Phelps-Dodge? I don't think so. The only problem with the coaxes you mention is that the braid is not solid or silver-plated. If any water gets inside the coax in any way, the copper braid eventually oxidizes generates IMD. The noise you get is probably mixing between the TX carrier its sidebands, which you induce when you move the coax with it's millions of point-contact diodes. If the duplexer is kept in a controlled environment (not outside), the cables shoudn't degrade. I had a piece of RG-8/X used as a pigtail to a portable repeater antenna that looked perfectly good on the outside, but generated noise such as you describe. Cutting it open revealed the water infiltration. In fact, it only generated noise when flexed in the area where water got in. Further down the coax where the braid still appeared shiny there was no noise when flexed. I replaced the pigtail with RG-142 that solved the problem. The fact that RG-142 is double-shielded is incidental; it's the silver plated shield that prevents IMD generation. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] WACOM WP-641 Duplexer - how embarassing
got a large portion of humble pie to eat! Anybody got any catsup? RG-400 is indeed double shielded. BUT, that brown transparent coax I have looks like RG-400 and has an mil std number stamped on it, but is single shielded. The tag attached to the coil says RG-400. It's in the trash can now! How bloody embarassing. I took apart the short jumpers on my 450 Duplexer and, yep, double shielded. Not to old to learn Roger Hansen, W6TOZ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Neal, The best answer to your question is probably: Whatever works! Both Bill Lieske of EMR and Len Pringle of Telewave have given me pretty much the same answer about jumper lengths for duplexers they manufacture. In most duplexers, the cavities are individually tuned for the desired insertion loss by adjusting the coupling loops or probes, and each cavity is tuned for the desired pass loss and notch depth. This is an iterative process, and eventually the technician has two or three high pass cavities that are identical, and two or three low pass cavities that are identical. At this point the technician selects a test jumper from a rack of pre-made jumpers that are arranged in 1/2 inch (usually) increments. From long experience, he picks one that he knows is close to being the right length. If each cavity had 0.6 dB insertion loss, he looks for a jumper that results in about 1.2 dB loss for the pair. If the loss is more than 1.3 dB, he'll try a shorter or a longer jumper until he finds one that gives the minimum combined loss. If this is a six-cavity duplexer, he'll add the third cavity and repeat the process, looking for about 2.0 dB total loss. If the customer wanted a deeper notch, each cavity's loops might have been set for a different coupling, which means that the optimum jumper cable lengths might not be the same. So, the jumper lengths are not always pre-calculated. Some duplexer manufacturers have just two or three cable harnesses that they use for all duplexers in a particular band, and these are compromises. Sad to say, many commercial installers have no interest in optimizing their installations, because that effort is time-consuming and is therefore costly. Hey, if it works, that's good enough! A purist does not embrace this one-size-fits-all approach! Regarding jumper cables, they should always be double-shielded; RG-214, RG-142, or RG-400 are good choices. Do not use RG-58, RG-8, or RG-213 because those are single-shield cables. 73, Eric Lemmon WB6FLY Neal Newman wrote: BTW the cans are WP-641's Neal Newman wrote: Hey Guys.. I am having a problem with my Wacom Cans... I am just curious what should the length be for the 4 jumpers.. the 2 between the cans and the 2 that meet at the output Tee. the repeater is on 145.230 and what type cable should be used ( I think it's RG-213?) I noticed that one cable is teflon... and 2 seem longer than the other 2.. I tookmMeasurements the jumpers between the cans measure 8.5 and 8.75 the 2 jumpers between the cans and the output tee measure 11.77 and 13.5 (teflon) I know this is not correct... Serves me right for loaning out the cans to friends club for a few years. For some reason I always thought all 4 cables should be about 13 but I may be wrong... Does anyone know the correct length? BTW I measured tip to tip of the pl-259's Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Interesting! emphasize double shielding and recommending RG214. RG-223 is double shielded, it isn't recommended. Why. RG-142 and RG-400 are single shielded and are considered qualified. Hm (:) Roger, W6TOZ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 This is why I am confused about the type cable.. BTW the WP-641 is a 4 cavity 8" Can Duplexer... Neal Eric Lemmon wrote: regarding jumper cables, they should always be double-shielded; RG-214, RG-142, or RG-400 are good choices. Do not use RG-58, RG-8, or RG-213 because those are single-shield cables. 73, Eric Lemmon WB6FLY Neal Newman wrote: BTW the cans are WP-641's Neal Newman wrote: Hey Guys.. I am having a problem with my Wacom Cans... I am just curious what should the length be for the 4 jumpers.. the 2 between the cans and the 2 that meet at the output Tee. the repeater is on 145.230 and what type cable should be used ( I think it's RG-213?) I noticed that one cable is teflon... and 2 seem longer than the other 2.. I tookmMeasurements the jumpers between the cans measure 8.5" and 8.75" the 2 jumpers between the cans and the output tee measure 11.77" and 13.5 "(teflon) I know this is not correct... Serves me right for loaning out the cans to friends club for a few years. For some reason I always thought all 4 cables should be about 13" but I may be wrong... Does anyone know the correct length? BTW I measured tip to tip of the pl-259's Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Some well known manufacturers did use RG-213 and RG-8 for duplexer interconnecting cables. Some people upgraded the cables to double shielded coax, but you have to take velocity factor into consideration when making the new cables. 73, Joe, k1ike --- Neal Newman [EMAIL PROTECTED] wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Any RG142 or RG400 I have worked with clearly has two shields in it. James [EMAIL PROTECTED] wrote: Interesting! emphasize double shielding and recommending RG214. RG-223 is double shielded, it isn't recommended. Why. RG-142 and RG-400 are single shielded and are considered qualified. Hm (:) Roger, W6TOZ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
On my factory original set of 641's, the cables are RG 214. James Joe wrote: Some well known manufacturers did use RG-213 and RG-8 for duplexer interconnecting cables. Some people upgraded the cables to double shielded coax, but you have to take velocity factor into consideration when making the new cables. 73, Joe, k1ike --- Neal Newman [EMAIL PROTECTED] wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Neal Newman wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 This is why I am confused about the type cable.. Wacom referred to 'their' RG-213, as "Modified RG-213", which was actually RG-214, and was truly double shielded. Kevin Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Thanks Kevin I thought it was RG-214 However it is stamped RG-213 Now Everyone has skipped a rock on the lake and avoided the answer to the question. all 4 cables are different lengths.. I would have thought they would Be close to the same length.. James says He has a set of WP641's but also did not answer the question.. what are the Lengths Of those cables??? I thought they should have been around 13" each... ANYONE have a WP641 wher they can Measure the cables lengths tip to tip AAARRHHHh. LOL Neal Kevin Custer wrote: Neal Newman wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 This is why I am confused about the type cable.. Wacom referred to 'their' RG-213, as "Modified RG-213", which was actually RG-214, and was truly double shielded. Kevin Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
I have placed a call to find that out, mine are no wheres near me. If I get the information back, I will post it here. 13" sounds correct. My duplexer has PL connectors on it. Here is what you could do now. Your cables should be electrically 1/4 wave length (or ODD multiples of). I would suggest that you take some RG 214 and do a little math. 1/4 wave at your operating frequency multiplied by the velocity factor of the cable to come up with the actual length. Cut your cable to this length and put connectors on it STRICTLY following directions and NOT cutting excess to do the connector. (I have no clue what that is on 214) (low and high can cut the same since cables will work to about 10% error). NOTE - Depending on where your cans were before, you may have to mess with the reject stubs on the side. QUESTION ANSWERED. again, if I get the information back I will post it. James Neal Newman wrote: Thanks Kevin I thought it was RG-214 However it is stamped RG-213 Now Everyone has skipped a rock on the lake and avoided the answer to the question. all 4 cables are different lengths.. I would have thought they would Be close to the same length.. James says He has a set of WP641's but also did not answer the question.. what are the Lengths Of those cables??? I thought they should have been around 13" each... ANYONE have a WP641 wher they can Measure the cables lengths tip to tip AAARRHHHh. LOL Neal Kevin Custer wrote: Neal Newman wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 This is why I am confused about the type cable.. Wacom referred to 'their' RG-213, as "Modified RG-213", which was actually RG-214, and was truly double shielded. Kevin Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Have one in 146.940/340, and all four pieces measure 12 1/2" exactly, tip to tip "WACOM PRODUCTS MODIFIED RG-214 DOUBLE SHHIELDED". Juan - Original Message - From: Neal Newman To: Repeater-Builder@yahoogroups.com Sent: Wednesday, October 13, 2004 6:55 AM Subject: Re: [Repeater-Builder] WACOM WP-641 Duplexer Thanks KevinI thought it was RG-214 However it is stamped RG-213Now Everyone has skipped a rock on the lake and avoided the answer to the question.all 4 cables are different lengths.. I would have thought they would Be close to the same length..James says He has a set of WP641's but also did not answer the question..what are the Lengths Of those cables???I thought they should have been around 13" each...ANYONE have a WP641 wher they can Measure the cables lengths tip to tipAAARRHHHh. LOLNeal Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Thank You JUAN.. I knew 8" was too short. thank you, thank you, thank you XE2SI wrote: Have one in 146.940/340, and all four pieces measure 12 1/2" exactly, tip to tip "WACOM PRODUCTS MODIFIED RG-214 DOUBLE SHHIELDED". Juan - Original Message - From: Neal Newman To: Repeater-Builder@yahoogroups.com Sent: Wednesday, October 13, 2004 6:55 AM Subject: Re: [Repeater-Builder] WACOM WP-641 Duplexer Thanks Kevin I thought it was RG-214 However it is stamped RG-213 Now Everyone has skipped a rock on the lake and avoided the answer to the question. all 4 cables are different lengths.. I would have thought they would Be close to the same length.. James says He has a set of WP641's but also did not answer the question.. what are the Lengths Of those cables??? I thought they should have been around 13" each... ANYONE have a WP641 wher they can Measure the cables lengths tip to tip AAARRHHHh. LOL Neal Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Neil, OK, here is the scoop on the interconnecting cables. I just measured a Wacom 641 factory manufactured for 146.445/147.445. All the cables are exactly 12.75 inches long PL connector tip to tip. Both Rx and Tx sides, and going to combiner Tee antenna connector are all the same length. They are stamped RG214/U MODIFIED on the cable. This set is almost new, has the newer small locking nut. Hope this helps. Gary K2UQ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] WACOM WP-641 Duplexer
Thank You James.. Neal James wrote: I have placed a call to find that out, mine are no wheres near me. If I get the information back, I will post it here. 13" sounds correct. My duplexer has PL connectors on it. Here is what you could do now. Your cables should be electrically 1/4 wave length (or ODD multiples of). I would suggest that you take some RG 214 and do a little math. 1/4 wave at your operating frequency multiplied by the velocity factor of the cable to come up with the actual length. Cut your cable to this length and put connectors on it STRICTLY following directions and NOT cutting excess to do the connector. (I have no clue what that is on 214) (low and high can cut the same since cables will work to about 10% error). NOTE - Depending on where your cans were before, you may have to mess with the reject stubs on the side. QUESTION ANSWERED. again, if I get the information back I will post it. James Neal Newman wrote: Thanks Kevin I thought it was RG-214 However it is stamped RG-213 Now Everyone has skipped a rock on the lake and avoided the answer to the question. all 4 cables are different lengths.. I would have thought they would Be close to the same length.. James says He has a set of WP641's but also did not answer the question.. what are the Lengths Of those cables??? I thought they should have been around 13" each... ANYONE have a WP641 wher they can Measure the cables lengths tip to tip AAARRHHHh. LOL Neal Kevin Custer wrote: Neal Newman wrote: Interesting I would have thought that also... However one of the existing cables is stamped WACOM and its RG-213 This is why I am confused about the type cable.. Wacom referred to 'their' RG-213, as "Modified RG-213", which was actually RG-214, and was truly double shielded. Kevin Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] WACOM WP-641 Duplexer
At 10/12/2004 10:47 PM, you wrote: Interesting! emphasize double shielding and recommending RG214. RG-223 is double shielded, it isn't recommended. Why. RG-142 and RG-400 are single shielded and are considered qualified. Hm (:) RG-142 RG-400 are double-shielded. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder]Wacom WP-641 Duplexer
I forgot to mention My measurments were Tip to Tip of the Pl-259 Connectors Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder]Wacom WP-641 Duplexer
Hey Guys.. I am having a problem with My Wacom Cans... I am just Courious what should the Length be for the 4 jumpers.. the 2 between the cans and the 2 that meet at the output Tee. the repeater is on 145.230 and what type cable should Be used ( I think its RG-213) I noticed that One cable is teflon... and 2 seem longer than the other 2.. I took Measurements the jumpers between the cans measure 8.5 and 8.75 the 2 jumpers between the cans and the output Tee Measure 11.77 and 13.5 (teflon) I know this is not correct... Serves me right for loaning out the cans to friends club for a few years. For some reason I always thought all 4 cables should be about 13 but I may be wrong... Does anyone know the Correct length Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/