Homemade VHF/UHF Antennas - Cascade Amateur Radio Society

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Basic antenna types Dipole antenna, consists of 2 radiating elements apposed from each other, feed point is at the center of the 2 elements Ground plane antenna, consists of one radiating element and a ground plane, feed point is at the connection of the ground plane and the radiating element Yagi antenna, directional dipole, dB, how long do you want to make it? 1/4 Wave length radiators 2.2 dBi, 0 dBd 1/2 Wave length radiators 3.8 dBi, 1.6 dBd 5/8 Wave length radiators 5.2 dBi, 3.0 dBd This reference material uses 2.2 dB as dipole gain
Collinear <strong>Antennas</strong> A collinear antenna is 2 or 3 radiating elements stacked on top of each other separated by a phasing coil to increase gain 5/8 Wave over 1/4 wave 5.4dBi, 3.2dBd 5/8 Wave over 1/2 wave 5.6dBi, 3.4dBd 5/8 Wave over 5/8 Wave over 1/4 wave 7.2dBi, 5.0dBd 5/8 Wave over 5/8 Wave over 1/2 wave 7.6dBi, 5.4dBd
Page 2 and 3: What criteria am I looking for in a
Page 4 and 5: Gain What gain is How it is expre
Page 6 and 7: Gain Antenna gain can be specified
Page 8 and 9: Why do I care? Gain is a major fac
Page 12 and 13: J Pole
Page 14 and 15: Horizontal Dipole
Page 16 and 17: Vertical with Ground Plane
Page 18 and 19: Stacked Vertical
Page 20 and 21: Yagi
Page 22 and 23: SWR VSWR Voltage standing wave rat
Page 24 and 25: Test Equipment SWR Meter SWR Test
Page 26 and 27: SWR Tester This is similar to an S
Page 28: Field Strength Meter A field stren

Homemade VHF/UHF Antennas - Cascade Amateur Radio Society

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