Re: [WISPA] Need Lightning Arrestor Advice
I'll second the PolyPhaser. Their RF products rock. No lost radios ever. I've had one fail in 10 years The factory was amazed and wanted it back for analysis. They gave me a free one to replace it. Marco On Thu, Sep 17, 2009 at 11:13 AM, Mike m...@aweiowa.com wrote: I'm not sure which Ethernet surge protection I'd recommend, but PolyPhaser does it best, in my opinion, for RF. At 10:51 PM 9/16/2009, you wrote: Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- Marco C. Coelho Argon Technologies Inc. POB 875 Greenville, TX 75403-0875 903-455-5036 WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Need Lightning Arrestor Advice
I've had one of three die on a tower a while back. Few months and still waiting on my RMA number/replacement/acknowledgement of existence. On 9/19/09, Marco Coelho coelh...@gmail.com wrote: I'll second the PolyPhaser. Their RF products rock. No lost radios ever. I've had one fail in 10 years The factory was amazed and wanted it back for analysis. They gave me a free one to replace it. Marco On Thu, Sep 17, 2009 at 11:13 AM, Mike m...@aweiowa.com wrote: I'm not sure which Ethernet surge protection I'd recommend, but PolyPhaser does it best, in my opinion, for RF. At 10:51 PM 9/16/2009, you wrote: Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- Marco C. Coelho Argon Technologies Inc. POB 875 Greenville, TX 75403-0875 903-455-5036 WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 When you have eliminated the impossible, that which remains, however improbable, must be the truth. --- Sir Arthur Conan Doyle WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Need Lightning Arrestor Advice
As the cost is minimal I would attach the arrestor to a ground rod at or near the unit then another ground rod at the structure just before cable entry, if you think the strikes are going to be on a more constant rate. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of James McBryan Sent: Wednesday, September 16, 2009 11:52 PM To: wireless@wispa.org Subject: [WISPA] Need Lightning Arrestor Advice Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Need Lightning Arrestor Advice
For us, we also do an arrestor before the radio, a gas discharge unit. We also use an arrestor before the POE injector and anyplace else a cable enters a structure or piece of equipment. We use shielded and flooded Cat5 cable with a static drain wire attached to shielded cat5 connectors and also grounded. (The static can give you problems just as much as lighting) For ground, we try to stay away from just wire and use copper strap where we can. 1.5 to 2. In a pinch I've cut copper pipe in half to give me the strap needed. (Never make any sharp angles with the grounds, lightning likes to go in a straight line) On our MT boxes, I put a thin copper sheet on the inside and outside where the gas discharge is inserted and attach a copper ground terminal to it on the outside and use that to ground to the structure we are on. For good measure, I use a lighting rated surge protector wherever we get commercial power. 20 bucks here from Ace Hardware. Says they will pay for up to $50,000 in damages caused by lightning. (I always thought, the surge has 6 outlets to plug things in - - What 6 things could I possibly have that would total $50,000 and if I did, why would I trust a $20 adapter from Ace Hardware???) What we do is probably overkill in our area but we haven't lost a unit yet. I obviously modify everything, it's a curse. The experts in all this are the cellular and broadcast tower people. Look around on the methods they use. Polyphaser is a good place to look for ideas, http://www.polyphaser.com/ I can't afford much of what they sell but it's good to see what's out there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of James McBryan Sent: Wednesday, September 16, 2009 11:52 PM To: wireless@wispa.org Subject: [WISPA] Need Lightning Arrestor Advice Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Need Lightning Arrestor Advice
Gas discharge type surge protector between antenna and radio. Ethernet surge protector close to radio. Shielded CAT5 cable ground terminated inside structure. Surge protector and/or UPS on power supply inside structure. Scot -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of James McBryan Sent: Wednesday, September 16, 2009 9:52 PM To: wireless@wispa.org Subject: [WISPA] Need Lightning Arrestor Advice Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Need Lightning Arrestor Advice
I'm not sure which Ethernet surge protection I'd recommend, but PolyPhaser does it best, in my opinion, for RF. At 10:51 PM 9/16/2009, you wrote: Hello all, I am part of a group installing a wireless network in rural Honduras for a growing educational system with a chapter of Engineers Without Borders (http://ewb-usa.org). We are creating a 7 node wireless network spanning a 3 mile radius. Since Honduras is very prone to rain storms and lightning strikes, we need to protect our equipment from the lightning. We plan on doing the following: 1) Place an arrestor between the radio and the antenna 2) Place an arrestor in the POE injector Some of the following criteria we are thinking: Amount of lightning strikes: One or Many Insertion Loss: Small as possbile Frequency : 2.4-5.8 GHZ When searching the internet, I see many many types of lightning arrestors given my criteria. Does anyone have any recommendations through their experience with lightning arrestors? What do you use? Thanks! James WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
