[aprssig] APRS-B?

Thomas Krahn thomas at tkrahn.com
Mon Jun 24 09:55:52 CDT 2013


Maybe he first thing is to standardize a "APRS-B" frequency in the 70cm 
band and a deviation that is compatible with the amateur radio 
regulations in most countries. I have send you a proposal several month 
ago for 432.900 MHz and I'd be interested what you and others think 
about that.


On 06/24/2013 07:54 AM, Robert Bruninga wrote:
> I'm impressed with the 500 mw transceivers on 433 MHz costing $20 or 
> so and operating at 9600 baud.
> Why don't we call this APRS-B (plan B).  And start paralleling our 
> network with these devices.
> Then instead of only 5% of hams having APRS capability, we could get 
> more people in the clubs to own a device and also to put one up at 
> home so we have a backup data channel as well?
> Maybe lots of you are doing this alrady and I am the last one to the 
> party.  But whatever we do, lets standardize on something so we are 
> all headed in the same direction.
> These are wideband devices, so they are not compatible with any 
> existing APRS or other ham FM radios.  That is why it is a fresh 
> start.  What is the sync and key up time?
> Sure the range of 500mw is small, but at only 10% of the cost of a 
> digi we can put them at more and closer places and even solar power them.
> Bob, WB4APR
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