> Joe, did you measured the output power ? If only 100m range I've > quess is a lot below 0dBm ... pdf says 3dBm at 10mA 3V, but runs OK at 5V (datasheet is not accurate re Vcc limit) > Did you have lately some questions asked in EDA board ? No. Where is EDA board ? > I have two talky-walky from radioshak (below $20) running at > 433MHz and 20 channels with a short antenna, able to connect > at 8Km LOS They actually achive 8km ? Much more than my customers would need normally but there are some cases and other aplications when 1km or more would be needed. If I could make a long-range Tx as optional that would be good. For now just improving the range with a better antenna might just do, even if it got to only 500m -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist