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Re: [RFI] Signal on 433.875

To: jim@audiosystemsgroup.com
Subject: Re: [RFI] Signal on 433.875
From: Charles Coldwell <coldwell@gmail.com>
Date: Tue, 20 Nov 2012 09:38:09 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I have in my possession a dev kit from Linx Technologies

http://www.digikey.com/product-detail/en/EVAL-433-LT/EVAL-433-LT-ND/1654265

They claim it operates at 433.92 MHz, which is only 45 kHz away from your
RFI.  Their website shows:

Application Examples

   - Get feedback from a security system at a safe distance
   - Operate a gate remotely and confirm that it's open or closed
   - Manage equipment from far away and get alerts when there's a problem
   - Use RFID to track assets and inventory



On Thu, Nov 15, 2012 at 9:24 PM, Jim Brown <jim@audiosystemsgroup.com>wrote:

> On 11/15/2012 6:11 PM, Roger (K8RI) wrote:
>
>> Had an intermittent signal that "apparently" has a digital component show
>> up on 433.875.  There is a LOT of STUFF being built/sold now days that
>> operates in that range. When actually looking there appears to be multiple
>> sources, most weak with only one strong one.
>>
>> Any thoughts
>>
>
> What you said -- there are many consumer product being sold that uses that
> spectrum at flea power. levels for all sorts of links -- everything from
> weather stations to remote controls for systems of all sorts. My guess is
> that those systems could be pretty susceptible to interference too.  On the
> other hand, there may be ham users too, but they should be identifying.
>
> 73, Jim K9YC
>
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-- 
Charles M. Coldwell, W1CMC
Belmont, Massachusetts, New England
"Turn on, log in, tune out"
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