Whatever happened to 4G interference?
 

In article , Andy
Burns
wrote:
Jim Lesurf wrote:

It's ages since I looked at this, but my (unreliable) recollection is
that EE do have an allocation in the bands just above ch60.

My scrappy little .txt file has this, had to break the lines into two

|791-796|796-801|801--------811|811--------821|
|H3G====|EE=====|VODAFONE======|O2============|


|821--------832|832-837|837-842|842--------852|852--------862|
|DUPLEX GAP====|H3G====|EE-----|VODAFONE======|O2============|

OK. I asked because of...

On 06 Nov in uk.tech.digital-tv, Woody wrote:

A little bit of digging tends to suggest that the only 4G available in
the town - and it is weak at that - is EE which is on 1800MHz AFAIK,
so who is kidding who?

The frequencies you list are more like the ones we might expect to cause
problems than 1800 MHz.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
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Whatever happened to 4G interference?
 

Jim Lesurf wrote:

Andy Burns wrote:


|791-796|796-801|801--------811|811--------821|
|H3G====|EE=====|VODAFONE======|O2============|

|821--------832|832-837|837-842|842--------852|852--------862|
|DUPLEX GAP====|H3G====|EE-----|VODAFONE======|O2============|

Woody wrote:

A little bit of digging tends to suggest that the only 4G available in
the town - and it is weak at that - is EE which is on 1800MHz AFAIK,

The frequencies you list are more like the ones we might expect to cause
problems than 1800 MHz.

EE converted some of their 1800MHz spectrum from 2G to 4G and started
selling phones that could only use 4G at that frequency, seems they have
or will soon start using their 800MHz spectrum

http://telecoms.com/440971

Whatever happened to 4G interference?
 

"Andy Burns" wrote in message
...
Jim Lesurf wrote:

Andy Burns wrote:


|791-796|796-801|801--------811|811--------821|
|H3G====|EE=====|VODAFONE======|O2============|


|821--------832|832-837|837-842|842--------852|852--------862|
|DUPLEX
GAP====|H3G====|EE-----|VODAFONE======|O2============|

Woody wrote:

A little bit of digging tends to suggest that the only 4G
available in
the town - and it is weak at that - is EE which is on 1800MHz
AFAIK,

The frequencies you list are more like the ones we might expect to
cause
problems than 1800 MHz.

EE converted some of their 1800MHz spectrum from 2G to 4G and
started selling phones that could only use 4G at that frequency,
seems they have or will soon start using their 800MHz spectrum

http://telecoms.com/440971



Well that's a load of blx for a start. Penetration increases with
frequency, which was why the police went to 450MHz (and Airwave was on
390MHz) for hand portables, rather than using existing VHF
frequencies.

800MHz will go further and to a degree probably have a lower noise
floor if CHI from TV can be ignored. 1800MHz doesn't go anything like
so far but it works in-building much better due to more reflections.


--
Woody

harrogate3 at ntlworld dot com

Whatever happened to 4G interference?
 

In article , Woody
wrote:

Well that's a load of blx for a start. Penetration increases with
frequency, which was why the police went to 450MHz (and Airwave was on
390MHz) for hand portables, rather than using existing VHF frequencies.

Not sure what you mean by 'penetration' here but in general I expect
attenuation by solids, water, etc, to increase with frequency. And being
able to diffract around the shape of the Earth, etc, also degrades as
frequency increases.

800MHz will go further and to a degree probably have a lower noise
floor if CHI from TV can be ignored. 1800MHz doesn't go anything like
so far but it works in-building much better due to more reflections.

....or perhaps because of reduced interference from elsewhere because it is
being attenuated by the walls?

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html