| High quality LMR cables. Okay guys. I generally avoid using LMR extensions between an AP and the antenna. After having several fail in the past on backhauls and AP's I swore them off and moved the APs up the towers. However, I have one tower that is not climbable. Its a tilt up 62 foot. It does have a LMR on it right now and I have water infiltration in the cable. It needs to be replaced and because of the involved winching process and truck that needs to be hired to accomplish laying it down I don't want to install an AP at the top of the tower.
So can anyone recommend a company to purchase a cable from that you have had long term experience with the cable lasting?
Thanks in advance. |
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 RhaasPremium
join:2005-12-19
Bernie, MO | |
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| reply to Chessie
Anything you have made, you may want to have that company frequency sweep the cable to check it though. Most notable companies do this any way.
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»www.wirelessdatanet.net |
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| reply to Chessie
I used to have the same problem but then switched to making all my own cables with real LMR-400 and EZ400NMH-D connectors. Haven't had an issue since but we stopped doing coax for anything but split mounts a long time ago. |
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 superdogI Need A DrinkPremium,MVM
join:2001-07-13
Lebanon, PA | reply to Chessie
I also stopped using LMR400 for jumpers unless I absolutely had too. I still have a few locations that use them however. IMHO, anything from Times Microwave is good stuff. I bought 2 rolls of it awhile back and am still using that stock.
If you make your own cables and take your time and solder all of your center pins, you should have no issues. As mentioned, they should be swept but.............All of mine seem to work just fine?
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»www.wavecrazy.net
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| said by superdog:I also stopped using LMR400 for jumpers unless I absolutely had too. I still have a few locations that use them however. IMHO, anything from Times Microwave is good stuff. I bought 2 rolls of it awhile back and am still using that stock.
If you make your own cables and take your time and solder all of your center pins, you should have no issues. As mentioned, they should be swept but.............All of mine seem to work just fine?
Thank you. Thats the type of feedback I was looking for. Any failures at all on the Times Microwave stuff? It apears the cable we have in place now is actually leaching moisture through the outer casing. |
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bburley
join:2010-04-30
Cold Lake, AB | I would consider going to LMR-600. When I started this job there was a 100ft run of LMR-400 for a 900 MHz AP that was performing poorly. Replacing it with LMR-600 made a huge improvement. |
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 John GaltForward, MarchPremium
join:2004-09-30
Happy Camp
kudos:5 | reply to Chessie
said by Chessie:Any failures at all on the Times Microwave stuff? It apears the cable we have in place now is actually leaching moisture through the outer casing.
Use this:
»www.tessco.com/products/displayP···ntPage=1 |
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 TomS_Git-r-donePremium,MVM
join:2002-07-19
London, UK
kudos:4 | reply to Chessie
Any reason you wouldnt use LDF instead?
Its probably more expensive, but has a solid corrugated shield instead of braid which helps keep water away from the core.
We used LDF1-50 for our microwave P-t-P feeders, and had a little 4-50 for certain installations when the radio was located indoors. Never a problem with them, even when the birds got at them. Just patch it up and move on. |
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| +1 on LDF. We quit using LMR like 7 years ago LOL |
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| reply to Chessie
IDK if this is acurate, but worth knowing for your application. It should be pretty close I would imagine.
A considerable difference between LMR-400 and .5" LDF.
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»www.wirelessdatanet.net |
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 Jim_in_VA
join:2004-07-11
Cobbs Creek, VA
kudos:4 | reply to bburley
bet that LMR600 was a bear to run, unless it was straight-line
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... need help? »evdo-tips.com/ |
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 AMD PhreakPork eating crusaderPremium
join:2003-12-14
Cell Tower
kudos:1 | 600 is pretty easy to run compared to Hardline. We used to plumb DAS's in using 600 instead of LDF4 because it could go around corners easier. |
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Jim_in_VA
join:2004-07-11
Cobbs Creek, VA
kudos:4 | really, 600 goes around corner's easy? The radius must be slight, that is is some thick stuff
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... need help? »evdo-tips.com/ |
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John GaltForward, MarchPremium
join:2004-09-30
Happy Camp
kudos:5 | said by Jim_in_VA:really, 600 goes around corner's easy? The radius must be slight, that is is some thick stuff
The recommend bend radius for most cables is 10x the diameter of the cable. Less than that and you will get center conductor migration and impedance changes. |
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AMD PhreakPork eating crusaderPremium
join:2003-12-14
Cell Tower
kudos:1 | reply to Jim_in_VA
Easier than hardline..... Still gotta be careful and mindful of what you are doing with it. |
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Jim_in_VA
join:2004-07-11
Cobbs Creek, VA
kudos:4 | one would only use 600 for tower feeds, nothing else...correct?
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... need help? »evdo-tips.com/ |
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AMD PhreakPork eating crusaderPremium
join:2003-12-14
Cell Tower
kudos:1 | You could. I made sure it wasn't used outside though..... |
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| reply to Jim_in_VA
Most reputable companies I know of would never use any LMR on a tower, period. 600, 400, junk is junk. |
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AMD PhreakPork eating crusaderPremium
join:2003-12-14
Cell Tower
kudos:1 | Yep. I prohibited braided style cables. I only permitted hardline types. Too many potential issues could creep up over the years. |
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