Remember those experienced AM/FM man-portable Radios with the feeler that you extended by pull it out? Or the communication system Antennas on elderly cars that would pop- out, extend and cringe once you turned on the radio? This feed isn't an Antenna, but it extends and retracts by hand in similar fashion. All ROHN telescoping masts are pre-galvanized and come accumulated with hardware.
Although they are marketed to be stronger than processed fiberglass poles, because they conduct, they are NOT suited to be exploited for commercial enterprise vertical antennas, unless you slope the vertical telegraph diagonally away from the pole. I have play 30 period of time experience mistreatment fiberglass poles in the field and for ageless installations at home. I individual shattered my share of [cheap] fiberglass poles.
Helically wound 40m vertical | DX Commander - Amateur Radio - Ham Radio
Chris (G0EYO) kind modelled my 40 meter vertical with load roll ( p=44) and mentioned that he felt the take off move may be higher than I would like it.. He suggested experimenting with a helically wound vertical.