Success! 20m and 40m on same element - Amazing Result!

(8:50)

Portable 1/4 wave vertical for 10m, 20m, 40m.

(3:1econd)

HAM RADIO DUAL BAND 20m/40m Vertical Antenna You Can Build.

(18:6)

UK Antennas Half wave end fed antenna, 40m, 20m,15m and 10m

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Boost your Magnetic Loop Antenna on 20M 40M 80M - Chameleon F-Loop 3.0 and others

(5:56)

HAM RADIO - Magnetic Loop Antenna 20m-40m

(17:32)

Natural Born Athlete - 10m, 20m, 40m Sprint Test

(2:3)

DX Vertical L Antenna for 20m and 40m

(30:20)

Balloon Antennas for 40M and 20M

(1:41)

North America QSO Party Contest. 80m, 40m and 20m HF Ham Radio

(41:32)

Portable Vertical Antenna for 20M and 40M

(11:29)

Simple Dual Band 20m/40m Vertical Antenna You Can Easily Build

(17:57)

How to Set Up an HF 20m 40m Mobile Radio Hamstick Antenna in 32 SECONDS!

(1:6)

Linked Dipole 20m 40m

(2:43)

Making and tuning an EFHW antenna for 40m/20m/10m [PART 1]

(2:59)

Basic 40m antenna no space

(3:46)

Trapped EFHW for 40m and 20m amateur band!

(18:52)

CQ CQ 20m, 40m and 80m from Warwickshire England

(1:37:59)

PAR EndFedz 10M/20M/40M Multiband Antenna

(4:17)

40m/20m inverted vee

(3:15)