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Re: 2.4GHz QRM



That's very sad. It used to be that the licensed
service got the protection, and the "Part 15" item was
shut down.
To borrow from Bob Dylan, "Money doesn't talk...It
swears".
73, Jim  KQ6EA

--- Trevor <m5aka@yahoo.co.uk> wrote:

> --- "Edward R. Cole" <al7eb@acsalaska.net> wrote:
> > RFID is an emerging technology that will become
> widespread and probably
> > cause weak-signal operation problems where it is
> shared with ham radio.
> > 433-435 MHz is FM simplex on my frequency chart
> and the ham sat spectrum
> > 435-438 MHz.  Maybe the question is how spectrum
> hungry the part-15 folks
> > are?
> 
> The top end of 433 MHz is unlicenced use in ITU
> Region 1, just like 2.4 GHz
> etc. 433/4 MHz is used for a wide variety of devices
> including remote
> Automobile locking - yes every Automobile owner in
> the EU uses it, as well as
> short range telememetry, voice, doorbells, Wireless
> TV Remote Control
> extenders, RFID etc.
> 
> The Automobile door locking use has caused
> considerable problems. In the UK the
> Regulator OFCOM has shut down several Licensed
> Amateur 430 MHz repeaters
> because the the front ends of the Automobile
> receivers blocked in streets
> around the repeaters so cars couldn't be started.
> Bear in mind in much of the
> world unlicensed consumer devices are given
> protection and licensed Amateur
> operations have to shut down.
> 
> I understand that Amateurs in the Netherlands lost
> 2.4-2.450 GHz because the
> Government wished to protect unlicensed WiFi and
> Video Sender devices.
> 
> 73 Trevor M5AKA
>  
> 
> 
> 
> 
> 	
> 	
> 		
>
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