Long Range WiFi Hardware?
Discussion
Google for Pringles cans - you can make your own omni antenna from one.
But - technically, to stay within the law there is a limit to the strength of the signal you can transmit (can't remember exactly) which is the power multiplied by the gain of the antenna.
To remain legal, if you can get a device with a seperate Tx and Rx antenna connection you can use a low gain antenna for the Tx and high gain for Rx...
But - technically, to stay within the law there is a limit to the strength of the signal you can transmit (can't remember exactly) which is the power multiplied by the gain of the antenna.
To remain legal, if you can get a device with a seperate Tx and Rx antenna connection you can use a low gain antenna for the Tx and high gain for Rx...
the legal limit in the UK is 20dBm EIRP - effective isotropic radiated power.
formula is radio output (dBm) - cable loss (dBm) + antenna gain (dBi) = your EIRP
so you have an AP that puts out 15dBm at 54Mbps - 10m low loss cable approx 3dBm + 9dBi omni = 21dBm EIRP
...very easy to be 'illegal' over here...however I never heard of anyone getting nicked for it...just dont go blasting 40dBm of wi-fi near an airport or military base etc
formula is radio output (dBm) - cable loss (dBm) + antenna gain (dBi) = your EIRP
so you have an AP that puts out 15dBm at 54Mbps - 10m low loss cable approx 3dBm + 9dBi omni = 21dBm EIRP
...very easy to be 'illegal' over here...however I never heard of anyone getting nicked for it...just dont go blasting 40dBm of wi-fi near an airport or military base etc
Nah, you can easily lose 1dB in connector losses at this frequency. As for having a high gain receive antenna, and low gain transmit antenna... Is there any cheapish commercial gear with separate RX/TX?
Just so people know what's what:
Isotropic - Imagine the antenna is sat in the middle of a sphere, a theoretically perfect isotropic antenna is emitting a radio signal with equal power no matter which point on that sphere you look from.
Now that's not really useful for WiFi, as it's putting a lot of it's power directly into the ground and into the air (although if you had a GPS antenna on an aircraft, that property is more desirable!). So, we redirect the energy that would normally go upwards or downwards and concentrate it closer to the horizontal. Which gives us:
Omnidirectional: This has a radiating pattern more like a really squashed ball. The more squashed it is, the more is concentrates the power closer to the horizon. It is said to have "gain" (every 3dB gain is a doubling of the power, so 9dB is 8 times the apparent signal) but really it is just moving the signal to where it is more use. Obviously, if you are way above or below the antenna, the signal is going to be weaker. If you walk around the antenna in a circle, with some sort of measuring device however, the strength would remain constant. So, to avoid broadcasting the signal to the entire neighbourhood, it is often useful to use a:
Directional Antenna: (e.g. the Pringles tube) Which directs all the energy into a narrower beam. The narrower the beam the higher the signal level! Just like placing a reflector behind a lamp, and a lens in front of it, you can see it much farther away and it looks much brighter.
Note: It doesn't matter whether an antenna is transmitting or receiving, it's radiating (or I suppose "receiving" gain) is the same.
With my professional hat on, I would say, yes, pay attention to your effective radiated power. With my practical hat on, I would say, use a couple of highly directional antennas. As you have line of sight there should be no major hassles. Although 20dBm is approximately 1/1000th the output of a 100 Watt lightbulb (which you can probably just about see with some binoculars at that range) a highly directional antenna has the advantage that it can only 'see' in that narrow cone, it is pretty deaf to all else around it (ok, I mixed that metaphor, its 4am, I'm allowed).
Keep your cable runs short to reduce losses and I would expect you to get some decent bandwidth in that system.
By the way, the background heat of the universe (2 to 3 Kelvin) generates a considerable amount of Radio Frequency radiation (as the early radar pioneers discovered). So if you pointed a perfect receiver at an empty patch of sky, you would still receive noise.
Mike
Just so people know what's what:
Isotropic - Imagine the antenna is sat in the middle of a sphere, a theoretically perfect isotropic antenna is emitting a radio signal with equal power no matter which point on that sphere you look from.
Now that's not really useful for WiFi, as it's putting a lot of it's power directly into the ground and into the air (although if you had a GPS antenna on an aircraft, that property is more desirable!). So, we redirect the energy that would normally go upwards or downwards and concentrate it closer to the horizontal. Which gives us:
Omnidirectional: This has a radiating pattern more like a really squashed ball. The more squashed it is, the more is concentrates the power closer to the horizon. It is said to have "gain" (every 3dB gain is a doubling of the power, so 9dB is 8 times the apparent signal) but really it is just moving the signal to where it is more use. Obviously, if you are way above or below the antenna, the signal is going to be weaker. If you walk around the antenna in a circle, with some sort of measuring device however, the strength would remain constant. So, to avoid broadcasting the signal to the entire neighbourhood, it is often useful to use a:
Directional Antenna: (e.g. the Pringles tube) Which directs all the energy into a narrower beam. The narrower the beam the higher the signal level! Just like placing a reflector behind a lamp, and a lens in front of it, you can see it much farther away and it looks much brighter.
Note: It doesn't matter whether an antenna is transmitting or receiving, it's radiating (or I suppose "receiving" gain) is the same.
With my professional hat on, I would say, yes, pay attention to your effective radiated power. With my practical hat on, I would say, use a couple of highly directional antennas. As you have line of sight there should be no major hassles. Although 20dBm is approximately 1/1000th the output of a 100 Watt lightbulb (which you can probably just about see with some binoculars at that range) a highly directional antenna has the advantage that it can only 'see' in that narrow cone, it is pretty deaf to all else around it (ok, I mixed that metaphor, its 4am, I'm allowed).
Keep your cable runs short to reduce losses and I would expect you to get some decent bandwidth in that system.
By the way, the background heat of the universe (2 to 3 Kelvin) generates a considerable amount of Radio Frequency radiation (as the early radar pioneers discovered). So if you pointed a perfect receiver at an empty patch of sky, you would still receive noise.
Mike
BrianThePirate said:
technically with retail 2.4Ghz kit you can get out to 24 miles.
You serious?
Yup.
I belive the record for non boosted WiFi is (IIRC) somewhere around 50 miles.
Unless a couple of 11 year olds with an old Sky dish and 2 rolls of tinfoil have beaten it again.
chrisjl said:
Can you elaborate on that? I was assuming a WAG-54 was just a WAP-54 with a build in ADSL modem - is that not the case then?
No, it's a different piece of kit altogether, the only similarity being the case style. The original suffered terribly from the WiFi falling over every 5 minutes if you pushed them a bit, I know, I had one. No amount of new firmware sorted it. In the end, Linksys replaced it for me with a brand new unit. The one they sent me was a newer version that had just been released (wasn't yet available in the UK - don't know if it is now as this was only about 3 months ago).
The difference is, the new one has stickers on the front saying it's ADSL2 compatible and such. I went to PCWorld yesterday in Solihull/Shirley and they were still flogging the old one.
Not sure if Linksys fixed the bug in the second one, but there were loads of complaints about the first.
I replaced my unit with a 3Com, and sold the brand new one on eBay (link to completed auction here : http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=44997&item=5746616383)
All other Linksys stuff I have used has been great, no complaints at all, but what I would say is that even with the 802.11g standard, there are still interoperability issues between manufacturers. My Linksys 54G USB adapter doesn't like working with the 3Com ADSL/Router/WiFi thingy very much. Switched to the supplied 3Com USB WiFi and problem gone.
HTH,
Roop
THanks for all the info guys, good topic.
I'm over in the Republic of Ireland so the UK laws are deifferent, however I think the 20dB limit is standard across Europe - I have the regulation docs here now so need to double check).
Anyway a few more questions....
I'm thinking about deploying wireless into the local village and then connect in a Sat link to give broadband access to the locals. We aren't due to get ADSL round here till 2006, and even then I've been assured by the local telecom engineers that the last mile copper is in such a poor state that they won't be able to deliver it very far out from the exchange anyway.
Leaving all the regs and licensing issues aside for the minute. I have a few other questions.
So consdier no line of site between 1 & 3 - imagine a dog leg round a hill at site 2
Site1-------------Site2-----------------Site3
1 to 2 is about 1 mile, 2 to 3 is about 1.5 miles.
Am I right in thinking that if you want to hop round this corner then you lose 50% of the bandwidth over the hop at site two?
And then to provide a hot spot at each site would we need an additional access point - ie one doing the 'backbone' and then one serving the hotspot?
And finally, can anyone give me any background on running a meshed network, something like....
Site1--Site2--Site3
|........|........./.|
|........|......../..|
|........|......./...|
|..Hill..|....../....|
|........|...../.....|
|.....Site 4./......|
|.../.....|..........|
|../......|..........|
|./.......|...Hill...|
|/........|..........|
Site5--Site6--Site7
Can you run OSPF over Wireless?
Are there any APs that will repeat a backbone and also act as an access point supports local client access?
cheers
Ex
(Edited to tidy up the diagram)
>> Edited by TheExcession on Tuesday 5th April 10:16
I'm over in the Republic of Ireland so the UK laws are deifferent, however I think the 20dB limit is standard across Europe - I have the regulation docs here now so need to double check).
Anyway a few more questions....
I'm thinking about deploying wireless into the local village and then connect in a Sat link to give broadband access to the locals. We aren't due to get ADSL round here till 2006, and even then I've been assured by the local telecom engineers that the last mile copper is in such a poor state that they won't be able to deliver it very far out from the exchange anyway.
Leaving all the regs and licensing issues aside for the minute. I have a few other questions.
So consdier no line of site between 1 & 3 - imagine a dog leg round a hill at site 2
Site1-------------Site2-----------------Site3
1 to 2 is about 1 mile, 2 to 3 is about 1.5 miles.
Am I right in thinking that if you want to hop round this corner then you lose 50% of the bandwidth over the hop at site two?
And then to provide a hot spot at each site would we need an additional access point - ie one doing the 'backbone' and then one serving the hotspot?
And finally, can anyone give me any background on running a meshed network, something like....
Site1--Site2--Site3
|........|........./.|
|........|......../..|
|........|......./...|
|..Hill..|....../....|
|........|...../.....|
|.....Site 4./......|
|.../.....|..........|
|../......|..........|
|./.......|...Hill...|
|/........|..........|
Site5--Site6--Site7
Can you run OSPF over Wireless?
Are there any APs that will repeat a backbone and also act as an access point supports local client access?
cheers
Ex
(Edited to tidy up the diagram)
>> Edited by TheExcession on Tuesday 5th April 10:16
I looked into this quite seriously when I was living up in Scotland.
Take a look at the Meshbox AP - it's designed to extend the coverage of the network by meshing and sorts out the routing so that data can hop over the network to the backhaul link.
Satellite is okay for backhaul but has latency problems. Not too bad a problem if most of the people using it are just web browsing as a decent transparent proxy can help with that. I also found that it was "interesting" trying to get one of the satellite providers to allow reselling of the bandwidth. From memory I found a Dutch company that would but can't remember the name off the top of my head.
It might well be worthwhile looking into the cost of leased line as if you're splitting the cost it might not be too horrendous. The other thing some communities have done (non-commercially) is made use of a Library's or School's leased line outside of opening hours as at least in the UK they're all supposed to have Internet access now. Not sure if this is the same over your way.
As for losing bandwidth when you have a repeater - this is true if you use just the one transmitter. You'd have to have a pretty high network usage for this to become a practical problem though. Again there are ways around this - especially if you go for a PC based architecture for your APs as you can have more than one wireless card in each and have them running on different channels. In a really heavily used system you could potentially have one with an omni antenna for local access as an AP but another 1 or more cards on different channels (chose carefully so they don't overlap) for the inter AP communication or use semi-directional antenna. I believe Solwise do 120* antenna so you could have three giving you all round visibility...
There are lots of possibilities.
Take a look at the Meshbox AP - it's designed to extend the coverage of the network by meshing and sorts out the routing so that data can hop over the network to the backhaul link.
Satellite is okay for backhaul but has latency problems. Not too bad a problem if most of the people using it are just web browsing as a decent transparent proxy can help with that. I also found that it was "interesting" trying to get one of the satellite providers to allow reselling of the bandwidth. From memory I found a Dutch company that would but can't remember the name off the top of my head.
It might well be worthwhile looking into the cost of leased line as if you're splitting the cost it might not be too horrendous. The other thing some communities have done (non-commercially) is made use of a Library's or School's leased line outside of opening hours as at least in the UK they're all supposed to have Internet access now. Not sure if this is the same over your way.
As for losing bandwidth when you have a repeater - this is true if you use just the one transmitter. You'd have to have a pretty high network usage for this to become a practical problem though. Again there are ways around this - especially if you go for a PC based architecture for your APs as you can have more than one wireless card in each and have them running on different channels. In a really heavily used system you could potentially have one with an omni antenna for local access as an AP but another 1 or more cards on different channels (chose carefully so they don't overlap) for the inter AP communication or use semi-directional antenna. I believe Solwise do 120* antenna so you could have three giving you all round visibility...
There are lots of possibilities.
LexSport said:
I looked into this quite seriously when I was living up in Scotland.
Take a look at the Meshbox AP - it's designed to extend the coverage of the network by meshing and sorts out the routing so that data can hop over the network to the backhaul link.
Thanks, looks good!
LexSport said:
Satellite is okay for backhaul but has latency problems. Not too bad a problem if most of the people using it are just web browsing as a decent transparent proxy can help with that.
Yup, I'm familliar with all those issues, good proxy/cacheing servers as well as local DNS etc all help. I'm on a satellite link here now.
LexSport said:
I also found that it was "interesting" trying to get one of the satellite providers to allow reselling of the bandwidth. From memory I found a Dutch company that would but can't remember the name off the top of my head.
Could be Aramiska, my current provider, they are selling comunity based solutions. There's always the sly option of tunnelling all the traffic through the satellite link to another server, that way the sat company can't see what you're doing, you didn't hear this from me
LexSport said:
It might well be worthwhile looking into the cost of leased line as if you're splitting the cost it might not be too horrendous. The other thing some communities have done (non-commercially) is made use of a Library's or School's leased line outside of opening hours as at least in the UK they're all supposed to have Internet access now. Not sure if this is the same over your way.
As for losing bandwidth when you have a repeater - this is true if you use just the one transmitter. You'd have to have a pretty high network usage for this to become a practical problem though. Again there are ways around this - especially if you go for a PC based architecture for your APs as you can have more than one wireless card in each and have them running on different channels. In a really heavily used system you could potentially have one with an omni antenna for local access as an AP but another 1 or more cards on different channels (choose carefully so they don't overlap) for the inter AP communication or use semi-directional antenna. I believe Solwise do 120* antenna so you could have three giving you all round visibility...
Regarding using two APs on different channels, one for the back-bone and then one for the local hotspot, do you know if it is possible to run both APs through the same antenna? I've seen antenna splitters but wasn't certain if this is their purpose.
That would cut the cost a bit. I like the idea of us running all the client access on one channel and the backbone links on another.
LexSport said:
There are lots of possibilities.
Aint that the truth!
best
Ex
TheExcession said:
Regarding using two APs on different channels, one for the back-bone and then one for the local hotspot, do you know if it is possible to run both APs through the same antenna? I've seen antenna splitters but wasn't certain if this is their purpose.
That would cut the cost a bit. I like the idea of us running all the client access on one channel and the backbone links on another.
Not sure. What I had in mind was something like that MeshBox with two WiFi cards in it (it runs a Linux based system that then uses the WiFi cards to allow it to pretend to be an AP). That way I'd think you'd want to run an antenna from each so you could chose the best antenna for the job - highly omni, lowish gain for the local connections and a high gain directional for the backbone...
And yes, it was Aramiska.
TheExcession said:
www.solwise.co.uk|www.solwise.co.uk
Cheers Roop, great site, prices look very reaonable too. Will definately be giving these guys a call.
best
Ex
Having just spent the last four days pouring over maps, driving round looking at lines of sight and phoning Solwise 2 or 3 times a day I finally placed the first order for some equipment.
I have to say that the people at Solwise are without a doubt some of the best people I have ever had the pleasure of dealing with. I cannot recommend them highly enough in terms of helpfulness and technical knowledge.
Better still once they realised I was working on a community project they offered me all the equipment at trade prices!
Awesome! -
here's to spending the next few weeks lobbing up antennas and access points! best
Ex
Just thought I'd let you guy's know that we've started deploying a wirelss network around the place.
So far we have three base stations running Linksys WRT54GS access points, these are linked together using 15dB omni ariels. And we have two people getting broadband internet access through this system.
Later this week we'll deploy another 3 access points by which time we'll have the local village covered.
More interestingly, we took a drive out with the laptop into an adjacent village about 4 to 5 km away and were utterly astounded to be able to pick up and use the signal there.
There's something a bit freaky about sitting in the middle of no where and being able to browse the net
Hopefully I'll get a bit more information put together for anyone who's interested soon. I'll spec out the kit I'm deploying and show some maps and photo's.
All good stuff and a few excited people and happy customers already.
best
Ex
So far we have three base stations running Linksys WRT54GS access points, these are linked together using 15dB omni ariels. And we have two people getting broadband internet access through this system.
Later this week we'll deploy another 3 access points by which time we'll have the local village covered.
More interestingly, we took a drive out with the laptop into an adjacent village about 4 to 5 km away and were utterly astounded to be able to pick up and use the signal there.
There's something a bit freaky about sitting in the middle of no where and being able to browse the net
Hopefully I'll get a bit more information put together for anyone who's interested soon. I'll spec out the kit I'm deploying and show some maps and photo's.
All good stuff and a few excited people and happy customers already.
best
Ex
Well done! Very interesting project. Looks like you're making a lot of progress. Please keep posting updates.
p.s. the bit you mention about it being "a bit freaky" to be out in the middle of nowhere and get a web connection ... you're dead right, but isn't it odd that we think it's freaky? It is, after all, the big bleeding benefit of using wireless in the first place. I've heard of quite a few people who've said "can't get wired broadband so I'll have to do something wireless" and kind of walk backwards into all the benefits of a wireless solution that extends over a reasonably large area (defined as the distance between my house and the pub's beer garden).
About 6 months ago I started using wireless broadband round the house with the laptop and therefore when I was out and about with the laptop, I started noticing wireless networks at local railway stations, some bars and coffee shops. A few of them were free, but most required some expensive and fiddly pay-as-you-go bollox with a specific telco. If I bought several of these packages I would at best have got very patchy coverage round the neighbourhood, office and journey to work. It was frustrating because it gave a hint of just how good genuine wide area availability would be. Ah well.
As it is, there is a free connection with reasonable bandwith available at Corney and Barrows, so in exchange for a couple of gins I can sit there and sort out e-mail and what have you. Prefereable to giving Deutsche Telecom a couple of quid while I sit in Cannon St station.
>> Edited by ATG on Tuesday 3rd May 10:44
p.s. the bit you mention about it being "a bit freaky" to be out in the middle of nowhere and get a web connection ... you're dead right, but isn't it odd that we think it's freaky? It is, after all, the big bleeding benefit of using wireless in the first place. I've heard of quite a few people who've said "can't get wired broadband so I'll have to do something wireless" and kind of walk backwards into all the benefits of a wireless solution that extends over a reasonably large area (defined as the distance between my house and the pub's beer garden).
About 6 months ago I started using wireless broadband round the house with the laptop and therefore when I was out and about with the laptop, I started noticing wireless networks at local railway stations, some bars and coffee shops. A few of them were free, but most required some expensive and fiddly pay-as-you-go bollox with a specific telco. If I bought several of these packages I would at best have got very patchy coverage round the neighbourhood, office and journey to work. It was frustrating because it gave a hint of just how good genuine wide area availability would be. Ah well.
As it is, there is a free connection with reasonable bandwith available at Corney and Barrows, so in exchange for a couple of gins I can sit there and sort out e-mail and what have you. Prefereable to giving Deutsche Telecom a couple of quid while I sit in Cannon St station.
>> Edited by ATG on Tuesday 3rd May 10:44
We have wireless broadband in the village, in fact it covers the whole of the peninsular. Came about due to BT not enabling the exchange and some persistance from a neighbour to win the East of England Development Agency (EEDA) ‘Connecting Communities’ competition.
Details are on the redmoon site here;
www.redmoon.uk.com/display.php?item=categories&cid=12
works really well and over some amazing distances.
Mark
Details are on the redmoon site here;
www.redmoon.uk.com/display.php?item=categories&cid=12
works really well and over some amazing distances.
Mark
4 miles shouldn't be too much of a problem, providing you've got line of sight.
If you want to fiddle around with some old/cheaper kit have a look at This site.
One of the links from it,This one is very interesting.
Also, to get as much gain as possible, consider using power over ethernet left clicky to keep your coaxial cable as short as possible.
Here is one of the suppliers I've used, Here is another, and another
Have fun.
Phil
If you want to fiddle around with some old/cheaper kit have a look at This site.
One of the links from it,This one is very interesting.
Also, to get as much gain as possible, consider using power over ethernet left clicky to keep your coaxial cable as short as possible.
Here is one of the suppliers I've used, Here is another, and another
Have fun.
Phil
philthy said:
4 miles shouldn't be too much of a problem, providing you've got line of sight.
If you want to fiddle around with some old/cheaper kit have a look at This site.
One of the links from it,This one is very interesting.
Also, to get as much gain as possible, consider using power over ethernet left clicky to keep your coaxial cable as short as possible.
Here is one of the suppliers I've used, Here is another, and another
Have fun.
Phil
Hi Phil, thanks for the links, I'd seen bits of them before.
You might want to consider www.solwise.co.uk if you are buying up more kit, they're a good bit cheaper than in the links above.
We're using LinkSys WRT54GS AP with SVEASOFT Alchemy firmware. We might consider moving onto the newer Talisman firmware which fully sypports meshing depending on two things;
1. We'll let other users sort out the bugs first
2. We'll see how our network architecture expands, at the moment it's a long backbone but if we pickup a few people on the other side of the valley then we'll definately look int oa mesh.
Thanks to all of you for the +ve feedback and encouragement!
best
Ex
Here you go, just took a few snaps...
These are the boxes I'm housing the WRT54GS access points into. There's enough room to stick the PSU into the box too. The three gland nuts on the bottom are
1 - Antenna cable
2 - Mains Power to the PSU
3 - Optional Ethernet cable for hardwiring a client
These are faily quick to assemble, it only takes about an hour to put the whole lot together. Including preparing and crimping the connectors onto the antenna cable, doing the mains power and drilling for the mounts onto the antenna column.
Here you see a view of one of the APs with a 15 dB omni antenna. (It's bolted to the shed at about 11pm on the satellite dish in case you can't see it)
Close up of the antenna and WRT in its box. The mount is bolted to the wall using rawl plug expanding bolts and seems pretty secure. I was a little worried about carrying the weight of the aluminum pole and antenna on one mount. If it looks like it's coming loose we can drop the pole a bit and put in another wall mount.
The cable up to the antenna is low loss and only a couple of metres long. The APs are adjustable for power with the alchemy firmware. We're pretty sure that with such high gain antennas and such short cables we'll actually need to turn the power down.
This pic is taken from directly under the installation above looking back towards the house. Mounted on the wall to the right of the sat dish you can see a white rectangular 16dB flat panel. This is linking all the satellite hardware to the shed installation (At some stage I'll cable the shed and gain an extra Access Point).
In the distance above and very slightly left of the sat dish you can make out a yellow house, behind that you can see a ridge line covered in trees (not the horizon). This is the village where we tested the link from. We had an 18dB flat panel on about 2metres of cable dangled out of the car window.
So all good stuff.
best
Ex
These are the boxes I'm housing the WRT54GS access points into. There's enough room to stick the PSU into the box too. The three gland nuts on the bottom are
1 - Antenna cable
2 - Mains Power to the PSU
3 - Optional Ethernet cable for hardwiring a client
These are faily quick to assemble, it only takes about an hour to put the whole lot together. Including preparing and crimping the connectors onto the antenna cable, doing the mains power and drilling for the mounts onto the antenna column.
Here you see a view of one of the APs with a 15 dB omni antenna. (It's bolted to the shed at about 11pm on the satellite dish in case you can't see it)
Close up of the antenna and WRT in its box. The mount is bolted to the wall using rawl plug expanding bolts and seems pretty secure. I was a little worried about carrying the weight of the aluminum pole and antenna on one mount. If it looks like it's coming loose we can drop the pole a bit and put in another wall mount.
The cable up to the antenna is low loss and only a couple of metres long. The APs are adjustable for power with the alchemy firmware. We're pretty sure that with such high gain antennas and such short cables we'll actually need to turn the power down.
This pic is taken from directly under the installation above looking back towards the house. Mounted on the wall to the right of the sat dish you can see a white rectangular 16dB flat panel. This is linking all the satellite hardware to the shed installation (At some stage I'll cable the shed and gain an extra Access Point).
In the distance above and very slightly left of the sat dish you can make out a yellow house, behind that you can see a ridge line covered in trees (not the horizon). This is the village where we tested the link from. We had an 18dB flat panel on about 2metres of cable dangled out of the car window.
So all good stuff.
best
Ex
Excellent stuff...! Nice to see pics of the installation too. Looks like a really nice setup. Look forward to the next instalment Gassing Station | Computers, Gadgets & Stuff | Top of Page | What's New | My Stuff