antenna – What will it take to build a DIY 2km (city conditions) RF transmitter (433Mhz)? – Electrical Engineering Stack Exchange Engineering and technology notes Jovan Stosic May 31, 2017 Source: antenna – What will it take to build a DIY 2km (city conditions) RF transmitter (433Mhz)? – Electrical Engineering Stack Exchange antenna – What will it take to build a DIY 2km (city conditions) RF transmitter (433Mhz)? – Electrical Engineering Stack Exchange was last modified: July 13th, 2017 by Jovan Stosic