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Re: KeyFob
- To: ukha_d@xxxxxxx
- Subject: Re: KeyFob
- From: "K. C. Li" <lbs@xxxxxxx>
- Date: Mon, 17 Jan 2000 04:40:08 -0500 (EST)
- Delivered-to: rich@xxxxxxx
- Delivered-to: listsaver-egroups-ukha_d@xxxxxxx
- Mailing-list: contact ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
> http://www.dolphin-telecom.co.uk/
if you want more gory details. If your
> 418MHz kit is well designed, then it should work just fine. However,
there
> have been various reports of problems (eg people unable to disarm
their car
> alarms when close to TETRA base stations etc etc, which may be a
reason to
> change to 433 if problems start to arise. It is a local effect
however, so
> 418 may be fine.
One also has to bear in mind that 433MHz is part of the radio amateur
band. I would guess that there are more radio amateurs than TETRA stations
so potentially, there are more sources of interference. Please note that I
use the word "interference" loosely. As a radio amateur myself, I
wouldn't
wish to be classified as such!
> It should certainly say MPT1340, the low power approval standard, but
I
> don't think they are required to state the frequency as well (I may be
> wrong on that though... it's nearly a year since I last actually built
> anything with a 418MHz link...)
Well, on X-10 products, only the frequency is stated and not the usual
MPT classification.
Regards,
Kwong Li
li@xxxxxxx
Laser Business Systems Ltd.
http://www.laser.com
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