71-76 GHz & 60GHZ Point to Point Microwave

[eddief1]

Hi Guys.

Can anyone tell me if 71-76 GHz is available for licensing for Point-Point microwave links ? Also is the 60GHZ ISM band allowed to be used for short range Point-Point links?

Any help would be appreciated

Regards

 

[Level7]

Why dont you look at 17ghz ? I have a very good deal for radios at about 35k each will be getting test units in the next week or two.

 

[Tim the Techxpert]

Hi There,
have you looked at the ICASA website?
There may be some information on that there.

Regards

Tim

 

[paul5186]

The pricing on those links are around R200000-R400000 per link. Honestly it would be cheaper and better in the long run to run fibre.

 

[eddief1]

The pricing on those links are around R200000-R400000 per link. Honestly it would be cheaper and better in the long run to run fibre.

I don't know where you getting your pricing from, more like 80K a link....

 

[TheWirelessGuy]

Hi Eddief1,

The potential rain fade you will have on those links will be quite serve, the lower the frequency the better the penetration but you sacrifice throughput. The best frequency at the moment to use as back-haul is 17Ghz

 

[Tacet]

Can anyone tell me if 71-76 GHz is available for licensing for Point-Point microwave links ? Also is the 60GHZ ISM band allowed to be used for short range Point-Point links?

ICASA still hasn't decided what to do about those bands, so currently the legal situation is that you pay according to the normal PtP tarrifs. With up to 1 GHz channel spacing, that would make any legally licensed link in that band extraordinarily expensive in SA. I'm hoping that they'll end up deciding on a light-licensed model - coordinate, but don't try to make money of it.

The potential rain fade you will have on those links will be quite serve, the lower the frequency the better the penetration but you sacrifice throughput. The best frequency at the moment to use as back-haul is 17Ghz

Depends utterly on what you want to do. For a short hop (i.e. 3 km) 38 / 42 GHz will be cheaper. For longer hops (i.e. 20 km) 17 GHz just won't work all that well. I'm assuming some kind of communications license here, with access to the shared PtP spectrum.

 

[eddief1]

ICASA still hasn't decided what to do about those bands, so currently the legal situation is that you pay according to the normal PtP tarrifs. With up to 1 GHz channel spacing, that would make any legally licensed link in that band extraordinarily expensive in SA. I'm hoping that they'll end up deciding on a light-licensed model - coordinate, but don't try to make money of it.



Depends utterly on what you want to do. For a short hop (i.e. 3 km) 38 / 42 GHz will be cheaper. For longer hops (i.e. 20 km) 17 GHz just won't work all that well. I'm assuming some kind of communications license here, with access to the shared PtP spectrum.

Ye thanks guys, In our situation we looking for a couple of higher capacity links, distance is under 2KM, more like 1KM hence my interest in the higher frequencies...I see WAPA is pushing for 70GHZ upwards, I truly believe there is potential on those frequencies for short links, as always ICASA is holding up the process...pity because there is some very cost effective equipment on the market running 70GHZ upwards. Bridgewave have got some 60GHZ stuff, but the price is extraordinary.

17Ghz might be the only option here, agreed, but for such short links the higher frequencies seem a better fit, 1 foot dishes and a couple of degrees beam-width, seems perfect for a metro environment where aesthetics come into play when you hanging equipment of buildings etc.

Thanks guys, keep the idea's coming ...

EDIT: for interest sake WiGig or 802.11AD is being adapted for small cell point to point links, kind of like Wifi was adapted for Wisp's, opens up some interesting avenues for cheap short range links

http://www.digitaljournal.com/pr/1617083
http://www.perasotech.com/ieee-802-11ad-wigig/

 

[paul5186]

I don't know where you getting your pricing from, more like 80K a link....

I was talking about the high capacity links 1gbs. Is this going to be for a rural or urban area?

 

[paul5186]

I was talking about the high capacity links 1gbs. Is this going to be for a rural or urban area?

Aah I see you said metro PS I was talking about the Bridgewave stuff - hence why I mentioned rather running fibre haha.

 

[Tacet]

..., distance is under 2KM, more like 1KM ...

For what you need FSO also seems to be a good fit. I haven't seen prices in quite a while, though, but the last I've heard suggested that is quite on par with E- and V-band.

 

[eddief1]

I was talking about the high capacity links 1gbs. Is this going to be for a rural or urban area?

So was I

For what you need FSO also seems to be a good fit. I haven't seen prices in quite a while, though, but the last I've heard suggested that is quite on par with E- and V-band.

Correct, FSO is similar in price to V & E band radios, we do however get a lot of heavy mist here :-(