Lucian
ULTIMATE Member
Free delivery, did it arrive flying?It was a just back from the pub late night bid on eBay. I forgot all about it until I got an email five days later saying I’d won. £30 if I remember correctly. Nobody else bid on it.
Free delivery, did it arrive flying?It was a just back from the pub late night bid on eBay. I forgot all about it until I got an email five days later saying I’d won. £30 if I remember correctly. Nobody else bid on it.
Will you need a prime focus dish for this?I measured the elevation angle using some trig and the known heights either end (from the Solwise map tool). The height difference between the centre of the dish at our end and the centreline of the array up the mast is 97m, which gives an elevation angle of only 2.29°. I'm using the 5° spacer that came with the dish at the moment, as there are trees on top of the hill between us and the mast and I think angling it upwards a bit might help.
The beam width of the dish antenna is pretty broad though, even up at B7. Guessing, from the gain figures, I'd say the 3dB beam width of the dish is going to be around 60° or so down in B20, narrowing to maybe 35° in B3. Might get as narrow as around 25° in B7. Still a pretty wide beam though, which does make alignment a bit less critical. Looking at the design the antenna pattern is going to be close to symmetrical in both the vertical and horizontal planes.
Be interesting to see what the performance is like with a bigger dish. Tempted to get the largest satellite TV dish I can find and see if there's a way to adapt the LHG antenna/router unit to work with an offset feed. Can't see any obvious reason for it not to work, and a typical asymmetric satellite TV dish would give a narrower beam in the horizontal place, whilst retaining a reasonably wide vertical pattern, with a useful boost in gain, especially down in B20.
This is a photograph of mine that I titled "there is no such thing as too much internet"I do love a good picture of mounting position, sort us out geezer
Will you need a prime focus dish for this?
If so, they’re quite rare over here compared to offset.
I was rather surprised just how tolerant the dish is to poor alignment!I measured the elevation angle using some trig and the known heights either end (from the Solwise map tool). The height difference between the centre of the dish at our end and the centreline of the array up the mast is 97m, which gives an elevation angle of only 2.29°. I'm using the 5° spacer that came with the dish at the moment, as there are trees on top of the hill between us and the mast and I think angling it upwards a bit might help.
The beam width of the dish antenna is pretty broad though, even up at B7. Guessing, from the gain figures, I'd say the 3dB beam width of the dish is going to be around 60° or so down in B20, narrowing to maybe 35° in B3. Might get as narrow as around 25° in B7. Still a pretty wide beam though, which does make alignment a bit less critical. Looking at the design the antenna pattern is going to be close to symmetrical in both the vertical and horizontal planes.
Be interesting to see what the performance is like with a bigger dish. Tempted to get the largest satellite TV dish I can find and see if there's a way to adapt the LHG antenna/router unit to work with an offset feed. Can't see any obvious reason for it not to work, and a typical asymmetric satellite TV dish would give a narrower beam in the horizontal place, whilst retaining a reasonably wide vertical pattern, with a useful boost in gain, especially down in B20.
I was rather surprised just how tolerant the dish is to poor alignment!
cheers, nperf on mobile set to 20secs works a treat, seems far more responsive than speedtest.netUse the nperf app and set it to run longer tests.
Alternatively start a speedtest, stop it midway and start again.
The routers need a bit of time and load to aggregate fully the bands.
new wife time?Yes, it won't be fussy, given the wide beamwidth. Nowhere near as twitchy as aligning a satellite TV dish, that has a much narrower beamwidth.
I'm seriously toying with the idea of getting the largest satellite TV dish I can find, junking the LNB and seeing if I can knock up a suitable B3 feed for it, perhaps using either the Mikrotik or Telefonica modules, with either a 2x2 or 4x4 MIMO patch antenna feed.
One advantage of B3 (and higher frequencies) is that it's not hard to make feeds at that frequency. A year or so ago I found a way to make 3D printed microwave horn antennas, using self-adhesive copper foil stuck on to pretty accurate 3D prints. Should be easy enough to make either two or four horns sized to illuminate an offset feed dish efficiently. The 10.525GHz horn antenna that I made to improve the performance of a cheap ebay Doppler radar works very well.
Our nearest (and only) mast does have a B3 EE sector antenna pointing pretty much directly at us (it's centered at 063°T, our bearing from the mast is 068°T). If I could connect to that then I'm sure the performance would be better, simply because B3 has more bandwidth per channel than B20.
Only real problem is my wife's tolerance to having yet more carbuncles bolted to the end of the house . . .
A useful article here: https://forum.mikrotik.com/viewtopic.php?t=160073&p=787201One thing I've noticed with the LHGG (in comparison to my omni and tp-link,) the tp-link will bond B3 & B1 (or B3, B3) but, the LHGG will only bond a B3, B3 ?