Building a Quarterwave Groundplane Antenna with Telescopic Whips

I built a quarterwave groundplane antenna using 5 telescopic whips. #portablehamradio #hamradioantenna #hamradio Link to the M10 GP attachment: https://www.ebay.com/itm/185851198515 Link to my book Salty Walt’s Antenna Sketchbook: https://home.arrl.org/action/Store/Pr...