Short Range Devices (SRDs) in 433-434 are bad news.
The United Kingdom opened up 433/434 to SRDs in the 1990's. Automobile remote
control key fobs used it - very short range, very low power stuff but the
killer was the receivers.
The Key Fob receivers had wide-open front-ends and collapsed
At 07:07 AM 3/9/2011, Trevor . wrote:
Short Range Devices (SRDs) in 433-434 are bad news.
Tell me about it! :/
The United Kingdom opened up 433/434 to SRDs in the 1990's.
Automobile remote control key fobs used it - very short range, very
low power stuff but the killer was the receivers.
Trevor wrote:
The UK regulator Ofcom made it mandatory that applications for UK
70cm (430-440MHz) repeater licenses had to prove that they wouldn't
cause interference to these unlicensed devices, eg wouldn't block
wide-open RF front-ends!
Unlicensed devices imposing restrictions to licensed
--- On Tue, 8/3/11, Miguel A. Vallejo, EA4EOZ ea4...@yahoo.es wrote:
Unlicensed devices imposing restrictions to licensed users?
I hope you
are joking, otherwise you have a serious problem with Ofcom
No I'm not joking, when devices are sold in large numbers Governments will
protect them even
My apologies for forwarding this but I need some
help with the answers. You could write directly
to Johnny or post to the reflector as is appropriate.
Date: Tue, 8 Mar 2011 08:37:19 +0800 (HKT)
From: Johnny Siu vr2...@yahoo.com.hk
Subject: Allocation of 433 434 MHz Band for Short
Range
I think with a little research we will find that these frequencies are
already in use by automobile tire pressure monitors on existing vehicles
and maybe even garage door openers...
Almost Part 95 type stuff if no...
Roger
WA1KAT
On 3/7/2011 8:33 PM, Edward R. Cole wrote:
Hong Kong is now
