‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Thursday, September 26, 2019 12:45 AM, jim bell wrote: [1]https://techcrunch.com/2019/09/25/amazon-sidewalk-is-a-new-long-range-wireles s-network-for-your-stuff/ the 900Mhz ISM band was used for pre 802.11b comms turn of the century, now back full circle :) as a hacker, one of my favorite bands! see also, 1W 900Mhz OFDM amp [ [2]https://www.shireeninc.com/osc/900mhz-10-watts-outdoor-linear-amplif ier ] 25W 900Mhz DSSS / FHSS amp [ [3]https://www.teletronics.com/amplifiers90025w.html#specs ] best regards, References 1. https://techcrunch.com/2019/09/25/amazon-sidewalk-is-a-new-long-range-wireless-network-for-your-stuff/ 2. https://www.shireeninc.com/osc/900mhz-10-watts-outdoor-linear-amplifier 3. https://www.teletronics.com/amplifiers90025w.html#specs