mobilexpi
02-26-2009, 09:06 PM
Ubiquiti have plans to launch 180-280, 700 or 900MHz NanoStations or NanoLoco??
View Full Version : NanoStation 700 or 900MHz
WHT
02-27-2009, 11:08 PM
But a PS9 EXT would be great
WHT
02-28-2009, 07:24 AM
180-280???
I hope you're not talking about 180Mhz. That's just NOT possible.
Sure it is...haven't you ever mounted a sixty pound 18 foot long antenna at the very top of a 600 foot tower by holding onto the lower two feet and bolt it into place?
Seriously...dunno about other countries, but some of those frequencies are reserved exclusively for biotelemetry.
And 200 KHz bandwidth.
I hope you're not talking about 180Mhz. That's just NOT possible.
Sure it is...haven't you ever mounted a sixty pound 18 foot long antenna at the very top of a 600 foot tower by holding onto the lower two feet and bolt it into place?
Seriously...dunno about other countries, but some of those frequencies are reserved exclusively for biotelemetry.
And 200 KHz bandwidth.
mobilexpi
03-01-2009, 05:55 AM
I've found Omni antennas and Directional antennas for 220-240MHz. Will it work?
Omni antenna, 2.6meters, 6dB, Impedance 50 Ω (http://www.timesantenna.com/220-240MHz-6dBi-Fiberglass-Omni-Antenna/62.html)
Mobile (for clients): dB (http://www.timesantenna.com/220-240MHz-2dBi-Mobile-Antenna/28.html) and (http://www.timesantenna.com/220-240MHz-2dBi-Mobile-Antenna-T-Model/29.html)
Yagi, 9dB, 1Meter (http://www.timesantenna.com/220-240MHz-9dBi-Yagi-Antenna/31.html).
In my country the band 220-230MHz it's free for "amateur use"
What's your opinion?
Omni antenna, 2.6meters, 6dB, Impedance 50 Ω (http://www.timesantenna.com/220-240MHz-6dBi-Fiberglass-Omni-Antenna/62.html)
Mobile (for clients): dB (http://www.timesantenna.com/220-240MHz-2dBi-Mobile-Antenna/28.html) and (http://www.timesantenna.com/220-240MHz-2dBi-Mobile-Antenna-T-Model/29.html)
Yagi, 9dB, 1Meter (http://www.timesantenna.com/220-240MHz-9dBi-Yagi-Antenna/31.html).
In my country the band 220-230MHz it's free for "amateur use"
What's your opinion?
Kozuch
03-03-2009, 01:42 AM
I've found Omni antennas and Directional antennas for 220-240MHz. Will it work? [...] In my country the band 220-230MHz it's free for "amateur use"... What's your opinion?
I think it will be fairly usable. However, you gotta remember you have 10-20 times longer waves than with usual 2.4/5GHz equipment - this means you gotta adapt the radio usage model. With the waves being 10x longer you might be able to get 10x greater signal coverage on same throughput.
As I am no radio expert, I would be interested too in possible use cases of such a radio - will it be long distance point-to-point or rather short distance point-to-multipoint? What will be the real throughput?
What is the max output power for the amateur radion on this frequency in your country?
I think it will be fairly usable. However, you gotta remember you have 10-20 times longer waves than with usual 2.4/5GHz equipment - this means you gotta adapt the radio usage model. With the waves being 10x longer you might be able to get 10x greater signal coverage on same throughput.
As I am no radio expert, I would be interested too in possible use cases of such a radio - will it be long distance point-to-point or rather short distance point-to-multipoint? What will be the real throughput?
What is the max output power for the amateur radion on this frequency in your country?
din0
03-04-2009, 08:34 AM
180-280???
I hope you're not talking about 180Mhz. That's just NOT possible.
900 is a problem because it needs a very large antenna compared to 2.4
You could never get an acceptable gain out of a small antenna that would fit in the 2.4 form. This is what's holding up the 900Mhz version of the PS.
Yes it's very possible.
Where did you get your facts?
Correct me if I'm wrong, but the bandwidth needed at those levels would be enormous to actually achieve anything useful. There's no way to get that much clear spectrum to make that work properly or any bit enjoyably. It would be like offering wireless dialup. (Maybe not that bad, but damn close)
I didn't mean it being not possible by transmitters, just for internet/networking purposes.
Havent looked into the ubnt VHF stuff, or spec's i.e type of modulation, data carrier's single or split , But do know you can push about 72 kbit/s as low as 30Mhz @ 36 Khz bandwidth using QAM
I hope you're not talking about 180Mhz. That's just NOT possible.
900 is a problem because it needs a very large antenna compared to 2.4
You could never get an acceptable gain out of a small antenna that would fit in the 2.4 form. This is what's holding up the 900Mhz version of the PS.
Yes it's very possible.
Where did you get your facts?
Correct me if I'm wrong, but the bandwidth needed at those levels would be enormous to actually achieve anything useful. There's no way to get that much clear spectrum to make that work properly or any bit enjoyably. It would be like offering wireless dialup. (Maybe not that bad, but damn close)
I didn't mean it being not possible by transmitters, just for internet/networking purposes.
Havent looked into the ubnt VHF stuff, or spec's i.e type of modulation, data carrier's single or split , But do know you can push about 72 kbit/s as low as 30Mhz @ 36 Khz bandwidth using QAM
WHT
03-04-2009, 09:23 AM
Yup...there is no way you can get a 900 Meg antenna in a 2.4 gig form factor (dimensions).
Granted you could do some tricky artificial loading or virtual shortening (the 18" VHF quarter wave shrunk down to a 6" rubber ducky antenna trick)...but the antenna aperture would be so small, you wouldn't capture any significant signal propagation front.
Granted you could do some tricky artificial loading or virtual shortening (the 18" VHF quarter wave shrunk down to a 6" rubber ducky antenna trick)...but the antenna aperture would be so small, you wouldn't capture any significant signal propagation front.
din0
03-05-2009, 03:32 AM
Yup...there is no way you can get a 900 Meg antenna in a 2.4 gig form factor (dimensions).
Granted you could do some tricky artificial loading or virtual shortening (the 18" VHF quarter wave shrunk down to a 6" rubber ducky antenna trick)...but the antenna aperture would be so small, you wouldn't capture any significant signal propagation front.
900mhz is not VHF!
900mhz will certainly be very close in dimensions, It will come down to antenna gain factor!
Granted you could do some tricky artificial loading or virtual shortening (the 18" VHF quarter wave shrunk down to a 6" rubber ducky antenna trick)...but the antenna aperture would be so small, you wouldn't capture any significant signal propagation front.
900mhz is not VHF!
900mhz will certainly be very close in dimensions, It will come down to antenna gain factor!
WHT
03-05-2009, 05:23 AM
The VHF reference was an illustration only of antenna design concepts.
"900mhz will certainly be very close in dimensions"...What dimensions ???
Certainly not with an internal antenna.
"900mhz will certainly be very close in dimensions"...What dimensions ???
Certainly not with an internal antenna.
din0
03-05-2009, 06:40 AM
The VHF reference was an illustration only of antenna design concepts.
"900mhz will certainly be very close in dimensions"...What dimensions ???
Certainly not with an internal antenna.
Like I mentioned, pending antenna gain. You'd probably only get about 4 dbi in a nano and about 12 dbi from a power station internal panel antenna keeping the same dimensions.
Maybe an example might help?
http://i234.photobucket.com/albums/ee228/coolfuel/dualband900-2000.jpg
"900mhz will certainly be very close in dimensions"...What dimensions ???
Certainly not with an internal antenna.
Like I mentioned, pending antenna gain. You'd probably only get about 4 dbi in a nano and about 12 dbi from a power station internal panel antenna keeping the same dimensions.
Maybe an example might help?
http://i234.photobucket.com/albums/ee228/coolfuel/dualband900-2000.jpg
WHT
03-05-2009, 11:26 AM
That appears to be a tuned broadband antenna resonant at 900 MHz and 2,000 MHz. It effectively has multiple arrays when operating at 2,000 MHz which increase the gain.
Lets keep track to just see how big a 900 MHz Nanostation would be compared to a 2,400 Nanostation.
The Nanostation 2 has a 20 cm long two-bay array antenna. with a gain of 10 dBi.
A similar sized Nanostation at 900 MHz would only have a single-bay 5 dBi antenna, which isn't anything to call home about.
Edited for correction...
"single-bay 5 dBi" edited to read "single-bay 7 dBi"
Lets keep track to just see how big a 900 MHz Nanostation would be compared to a 2,400 Nanostation.
The Nanostation 2 has a 20 cm long two-bay array antenna. with a gain of 10 dBi.
A similar sized Nanostation at 900 MHz would only have a single-bay 5 dBi antenna, which isn't anything to call home about.
Edited for correction...
"single-bay 5 dBi" edited to read "single-bay 7 dBi"
jcremin
03-16-2009, 06:42 PM
For the right price, a 5dbi NS9 would be great for a handful of situations (like where 2.4 just doesn't quite penetrate but a 12dbi rootenna is way overkill.
russman
08-30-2010, 09:58 AM
I see the NanoStation M900Loco is shipping in November now. It comes standard with an integrated 7.5dBi antenna and optional external antenna port(s). Are there plans to produce a NanoStation M900 (non-loco) with an integrated 13-14dBi antenna? I'd like to see a good all UBNT EIRP basestation/CPE match-up in this product line.
I'd hope they are not stopping with the loco and the external. Does anyone know if it comes with one external connector or two, the spec sheet isn't clear on this?
I'd hope they are not stopping with the loco and the external. Does anyone know if it comes with one external connector or two, the spec sheet isn't clear on this?
jcremin
08-30-2010, 08:16 PM
I see the NanoStation M900Loco is shipping in November now. It comes standard with an integrated 7.5dBi antenna and optional external antenna port(s). Are there plans to produce a NanoStation M900 (non-loco) with an integrated 13-14dBi antenna? I'd like to see a good all UBNT EIRP basestation/CPE match-up in this product line.
I'd hope they are not stopping with the loco and the external. Does anyone know if it comes with one external connector or two, the spec sheet isn't clear on this?
Yeah, while the loco will still have its purpose, it won't be a replacement for most of my network until they have that 12-14 db version.
I'd hope they are not stopping with the loco and the external. Does anyone know if it comes with one external connector or two, the spec sheet isn't clear on this?
Yeah, while the loco will still have its purpose, it won't be a replacement for most of my network until they have that 12-14 db version.
russman
08-31-2010, 06:18 AM
Yeah, while the loco will still have its purpose, it won't be a replacement for most of my network until they have that 12-14 db version.
I hear ya. I'm not planning on jumping on the preorder bandwagon until I see more of the CPE lineup. I'm REALLY looking forward to more UBNT CPE selection in the 900 range. I have lots of potential customers with homes deep behind 60' walls of dense forest pine trees.
I hear ya. I'm not planning on jumping on the preorder bandwagon until I see more of the CPE lineup. I'm REALLY looking forward to more UBNT CPE selection in the 900 range. I have lots of potential customers with homes deep behind 60' walls of dense forest pine trees.
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