A ground plane for a cb radio antenna is the metal surface needed below the antenna.
Cb antenna attic ground plane radials.
That consists of a single vertical 108 radiator section and 3 or 4 108 radials drooped at a 45 degree angle to provide the proper 50 ohm feedpoint impedance.
In mobile applications the vehicle body acts as the ground plane reflective unit.
The metal surface enables the signal generated when transmitting to reflect off the surface and travel into the atmosphere.
The most common ground plane antenna to build is a simple 1 4 wave.
Vertical antenna with ground plane radials.
The metal surface enables the signal generated when transmitting to reflect off the surface and travel into the atmosphere.
In mobile applications the vehicle body frame acts as the ground plane reflective unit.
4 3 out of 5 stars 14.
Thus my questions in the comment above.
Begingroup cb ground plane antennas come in various designs e g.
This calculator can be used to design a quarter wave ground plane antenna with radials.
Any ground plane should have 1 4 wave 108 radials for the most effective ground plane.
Tall when you finally install it which is high enough to capture more reliable signals.
Ahh the good old quarter wave ground plane.
The cb base station antenna stands about 10ft.
It is also possible to shorten them with marginal impact on the performance especially if they are loaded to keep their electrical length.
Endgroup mike waters jul 9 17 at 1 04.
There are usually four radials three being a minimum but you could use up to six.
Sirio doesn t cut corners when it comes to the quality of their products.
It also features 3 radials with plastic arms bracket reinforcement that further improve the transmission range.
A common misconception is elevated radials as counterpoise perform the role of ground plane in an antenna system including dominating the far field effects from real ground over which the antenna resides.
The radiating element is a quarter wave λ 4 and the radials are 12 longer.
A ground plane for a cb radio antenna is the metal surface required below the antenna.
Possibly the radials have been removed or the antenna has been otherwise modified.
It is not always necessary to have a minimum of four radials often even two will suffice.
Cb wilson firestik francis astatic cb radio antenna ground plane 3 8 x 24 black tip mirror trucker.
