Thanks. That's a good answer. I don't think anything like this was cost effective in the early 2000's. A quick google turned up this: http://search.digikey.com

Thanks. That's a good answer. I don't think anything like this was cost effective in the early 2000's. A quick google turned up this: http://search.digikey.com/us/en/products/MRF24J40MA-I%2FRM/MRF24J40MA-I%2FRM-ND/1867972 http://search.digikey.com/us/en/products/MRF24J40MA-I%2FRM/M... A module from Microchip that looks relatively easy for someone who already monkeys with micros to add low speed wireless to a project for about $8/unit. Very Nice. I am inspired.