[TowerTalk] Radial Length

[Don Josephs]

 Folks  de  K5DEJ

Is there a formula for determining the radial length, i.e. other than 468/f
MHz ???   I am trying to get a High Sierra 1800 Pro to resonate on my Motor
Home and have not been successful, as of this writing.
    
I have searched the books I have here in the shack on the subject of radial
length but have not found anything other than the radial length should be
approximately a quarter wave length.  I have cut the radials I have used to
the lengths specified by the above formula but have  not been successful in
getting the 1800 Pro to resonate. 

I would like the antenna to cover the frequencies of 4.025 MHz (MARS), and
40, 20, 17, 15, 12, 10 Meter Bands with a low SWR.  The 1800 Pro is mounted
on the back of a 28 foot Class C Motor Home.  Radials will have to be routed
to use the available space on top of the motor home.


Any assistance would be greatly appreciated.


 Peace and all good 
    Don   K5DEJ
    djosephs at beecreek.net
      "Old radio nuts never die, 
      they just fade into the noise!"
      K5DEJ