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post #11 of 204 Old 09-10-2009
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Quote:
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You could sell them on eBay.
After you get one that works, can you post pictures of the differences to help others avoid that problem?

Regards
In my attempts to get something that worked I got some adapters and the adapter that I got had the correct and incorrect ends on it. The online pictures are not good enough that you can tell the difference so I doubt that it will be much help. But maybe someone can put a name to the wrong one so that you can ask.

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post #12 of 204 Old 10-10-2010
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Bullet M2HP installation

Having recently installed a Bullet M2HP on my sailboat I have written a configuration guide to take you from as shipped to happily hooked up to a WiFi access point stage.

Richard

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post #13 of 204 Old 10-10-2010
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Unfortunately being a new member forum rules require I make two plain posts before I can add any upload content so please bear with me.

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post #14 of 204 Old 10-10-2010
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Bullet installation configuration

OK here it is. This guide addresses issues I've not seen covered in any other.



I bought my equipment from these guys including POE box & 12db omni antenna which is supplied with bracket & fits straight on to Bullet. Total cost with 15 metres of screened Cat 5e cable $139.

Configuration instructions, which although written for M2HP will get you up & running with 2HP as well.



I have my Bullet hooked up to a surplus 802.11n router. My laptop, TV & smartphone all share the connectivity.



Richard

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post #15 of 204 Old 10-12-2010 Thread Starter
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One thing I noticed which bears adding here.... The Bullet2HP has to be turned on AFTER your laptop comes on. So if you have just powered-up your laptop, you have to cycle your Bullet2HP off (I usually wait a few second with it off) and then on again.

We currently have ours hoistable on a halyard. The final installation at the top of the mast will take place after I get the CAT5 cable run inside the mast. That's a 2-person job and we've been too busy having fun this past summer.

Regards,
Brad

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post #16 of 204 Old 10-12-2010
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Hmm I think that might be an issue with your machine. My Bullet is left on permanently at the moment. As soon as my laptop boots up or its brought out of sleep mode, it connects. This is true with direct LAN connection or with my present setup, Bullet->802.11n WLAN router->laptop 802.11n WLAN adaptor (2x2 130Mbps).

I'm running Windows 7 x64 so that may explain why I don't have the same issue.

BTW I found that best settings for my WLAN router were with DHCP off as that task is performed by Bullet. I simply plug Bullet LAN cable into one of the four LAN sockets on router (doesn't have WAN port) & it provides transparent connection.

Would be interested to hear if you receive substantially better signal strengths with antenna at top of mast compared to say 6 feet above deck.

Regards

Richard

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post #17 of 204 Old 10-12-2010
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I used to own and operate a Wireless Internet company in the mid-west. I have used many of Ubiquti's commercial products with great suceess, but never the consumer line such as the Bullet.

I can tell you that things like increasing your antenna height, and higher gain antennas will all make large differences in the ability to reliably pick up a signal from a long distance.

As for the comment about avoiding high gain antennas on the water, that most definitly does NOT apply to wifi antennas. the higher the gain the better they will perform in nearly all situations.

As for the Antennas, Pacific Wireless makes very good low priced 2.4 Ghz outdoor omni antennas. They can be purchased from streakwave.com, and their sales staff is quite knowledgable (their main office is practically across the street from Ubiquiti, you won't find anyone with better knowledge).

to be clear, I do not have any affilliation with either company, but I do know people at each of them as a result of doing business with them for years.

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post #18 of 204 Old 10-12-2010
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Yes I agree with all your points (I too have served my time in microwave coms) although you didn't mention vertical beam width.

Rightly or wrongly I ignored popular advice on using an omni of no more than 6dB gain to avoid this issue. I have a 12dB gain one which claims an 8 vertical beam width, but so far no problems. If my boat is rolling so much at anchor that I start to loose Internet connectivity, that would be the last thing on my mind.

It's probably not practical to put a 12db gain omni at the top of the mast given its 4 foot length, so I was wondering what Brad was using.

I would be particularly interested to know how a 12dB omni performed on average at say 12 feet above the water compared to a 6dB one 60 feet up, given that most AP's are around 15-20 feet above ground in the Caribbean.

Richard

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post #19 of 204 Old 10-12-2010 Thread Starter
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Quote:
Originally Posted by richardhula View Post
Yes I agree with all your points (I too have served my time in microwave coms) although you didn't mention vertical beam width.

Rightly or wrongly I ignored popular advice on using an omni of no more than 6dB gain to avoid this issue. I have a 12dB gain one which claims an 8 vertical beam width, but so far no problems. If my boat is rolling so much at anchor that I start to loose Internet connectivity, that would be the last thing on my mind.

It's probably not practical to put a 12db gain omni at the top of the mast given its 4 foot length, so I was wondering what Brad was using.

I would be particularly interested to know how a 12dB omni performed on average at say 12 feet above the water compared to a 6dB one 60 feet up, given that most AP's are around 15-20 feet above ground in the Caribbean.
Yes, it's 4 feet long. The mast had a "mystery antenna" mounted atop it that I took down. Everything is a match threading-wise.

I did some tests and saved screenshots. Mainly using a 9 db versus a 12 db gain antenna. i still have to post about it. Been a bit too busy to get my head around it. It's coming though. Let's just say that I hit the marina 1/2 mile away at 2.4+Mbps.

Regards,
Brad

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post #20 of 204 Old 10-12-2010
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Vertical beamwidth is a consideration, but I beleive the water will actually partially negate that as there may be significant multi-pathing from being reflected off the surface of the water. There is a trade off, but I think the gain from a higher gain antenna (yes, pun intended) outweighs the downside of the smaller beamwidth in the size antennas that people will be mounting on their boats.

@Bene505, As for getting connection from 1/2 a mile away... that's nothing. with clear line of sight, the 400mw transmitter (I pulled that spec from memory from some old sales material I saw when it was first coming out so it may be off), and a 12dBi antenna, you should be able to connect from 6 or 7 miles away. With properly aimed directional antennas and lower power transmitters than the bullet you have, I've completed links of nearly 30 miles

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