You may not be able to use the ham bands.
I got my ticket in 1961, then there was no ONE Way transmission allowed.
You had to be talking to someone.
That was considered NOT amateur, but a commercial application?

There might be a way around, but the purpose of amateur radio was to 
spur interest in radio and use talking to other amateurs in doing so?

Mike, WA6ISP


On 5/21/2010 9:57 AM, Russell McMahon wrote:
>> I have need for a burgler alarm that needs to have a range of 22 miles
>>      
>    
>> embedded cell phone does us no good.
>>      
>    
>> The thieves know that they can cut the phone line
>>      
>    
>> but the internet goes down so often for short periods of time.
>>      
>    
>> I do have a ham license, so an HF transmitter might be an option.
>>      
> - 22 miles sounds specific. If you have a fixed location in mind then
> a fixed link is worth considering.
> Depending on terrain  you can do this with WiFi with  1 or a few hops
> and varying legality.
>
> - Ham RF link sounds easy and eminently doable.
>
> - Shortish distance WiFi links to other houses etc with internet
> connectivity and hopefully a different network etc may provide
> security from diversity.
>
> - Hidden cameras can be cheap and hard to find. Using a logging
> multichannel recorder hidden somewhere unfindable gives a record. Use
> of a short range WiFi link for this to a neighbour would be easyish.
>
> - Signs proclaiming hidden cameras and radio links may be a deterrent or a spur.
>
> - WiFi link to a location with cellphone coverage may be an easy solution.
>
> - Distances of km can be obtained with modest parabolas and semi
> serious one - 1 to 2 metre diameter can give great range.
>
> - Rottweiller, Doberman, Alsatian, Chihuahua, ...
>
> - Bren, Sten, Claymore, Semtex, ..
>
> - ED-209 **
>
> - HV, EHT, ...
>
> - Capsicum powder dispersal on alarm triggering.
>
> - CN, NH4OH*, ...
>
> - VERY VERY VERY loud alarms are sometimes intentionally used for area denial.
>
> ...
>
> * would probably work a treat for area denial.
>
>
>
>              R
> ** Probably available cheap.
> http://en.wikipedia.org/wiki/ED-209
>    

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