[aprssig] RE: [OZAPRS] Voice Alert

Dale Blanchard wa7ixk at arrl.net
Fri Jul 30 04:45:18 EST 2004


There is a lot of 123 hz use on western USA repeaters and remotes. 
135.5hz is used mostly for closed systems.
100HZ for open systems.

Robert Bruninga wrote:

>VOICE ALERT Tone?:
>
>  
>
>>>>chris.hill at crhtelnet.com.au 7/29/04 10:18:30 AM >>>
>>>>        
>>>>
>>I gather you're recommending 123Hz for countries 
>>that use a 50Hz power system?
>>
>>(123Hz is inappropriate for countries with 60Hz power).
>>    
>>
>
>oops, you are right there also!  What I was suggesting was
>to go with what the Europeans had decided. so that
>at least everyone else everywhere is on the same tone.
>Then if we in the USA ever decide to change from 100 Hz,
>then everywhere would be just one time.  Maybe the 
>Europeans chose 136 Hz?  I dont remember.
>
>Bob
>
>
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>
>  
>

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