A 5 elements V-Yagi @ 19AT021
For: CB channels 11 meter band
Antenna Type: 5 elements V-Yagi
Bend Radiator (k6STI)
Designed by: HPSD version 1.01 feb 2014
Boom length: 5,9 Meter
Gain: 9,71 dBI (@27,100 MHz, Peak gain: 9,9dBI @27,7MHz)
FB <26 dB
FR <25 dB
Impedance: 50 ohms, direct fed
SWR below 1:1.1 > 950 Khz.
SWR below 2:1 > 2200 Khz
Above “freespace” azimuth plot at 27,1 MHz.
The freespace azimuth plots at different frequencies
Above the freespace elevation plots at 27,1 MHz
Above the “freespace” elevation plots at different frequencies.
Above the elevation plot at 10 meters heigth (average ground conditions).
Above the elevation plot at 18 meters heigth (average ground conditions)
All elements are made out of “maco” tubing.
All sizes here provided in Meters unless otherwise specified.
The center of each element (1,4,7,10,13) is made from 15,875mm tubing and is 1,8288 Meter long.
The “tips” of each element is made from 12,7mm (1/2 inch) tubing consistent with Maco.
Do not change dimensions and be precise !
ELEMENT DISTANCES and LENGHTS
Element lengths: Distances:
Reflector: 5,570 M 0,0 M
Radiator: 5,250 M 0,46/0,85 M
Director 1: 5,130 M 1,75 M
Director 2: 5,090 M 3,40 M
Director 3: 4,820 M 5,90 M
The antenna is 50 Ohms direct fed, no machting losses
A RF-Choke and
NOT FOR COMMERCIAL USE !