CHARTS OF FEEDLINE LENGTHS:

This page contains tables showing usable feedling lengths (LF) for 3 different sizes (LD) of antennas.

 

It also shows lengths for generic 600 Ohm line and 450 [400] Ohm Wirmean line.

 

 

IMPORTANT:  ANTENNA MATCHBOX SPECIFICATIONS:

 

The ability of an antenna matchbox to match the antennas shown below

will depend on the matching range of your matchbox.

 

ASSUMPTION:  

THE MATCHBOX CAN MATCH IMPEDANCES

FROM 20 OHMS TO 1500 OHMS.

The data shown in the charts below was modeled by

and shown here with permission of Dan Maguire, AC6LA.

My Favorite: Overall Dipole Length 34m (111 ft.):

 

Top Chart:  Generic 600 Ohm Openwire       Bottom Chart:  Wireman 553 Ladderline

Note:  the bottom black line shows lengths that should work for all bands.

 

Field Day Antenna

(No WARC)

Note:  the bottom black line shows lengths that should work for all bands.

Generic 600 Ohm Openwire / 4 Antenna Lengths:

Note:  the bottom black line shows lengths that should work for all bands.

 

134 ft. (41m):

 

 

 

111 ft. (34m):

 

 

 

100 ft. (30.5m):

Field Day Antenna:

(No WARC)