arhi
Member
I got some simple AM transmit/receive modules (RT5, RR30) on 433.92MHz and I'm playing with them.... I'm currently using a piece of wire as antenna on both modules (433.92MHz gives 17.27cm whip antenna - 1/4wl)... and it works ok, but I'm testing with "few cm distance" so it would be strange not to work... what I would like to know is this "whip antenna" that is 1/4WL .. does it have to be "streight" wire or I can roll the wire on a stick or something (to get spring like shape to shorten the antenna size keeping the wire length same ..)?