Lit Number: 11-06-21-068
Page (15)
4.3.1.3 Other Wires Used in Antenna Construction
Smaller antennas e.g. RI-ANT-G02C tend to have very strong RF fields but the field
falls away rapidly, whereas larger antennas have a less intense field close to the
antenna and the field strength falls off less rapidly. Litze wire will bring increased
performance to small loops and ferrite cored antennas but has limited advantages as
antennas get larger. Texas Instrument’s large gate antenna (RI-ANT-G04C) does not
use Litze wire but ‘oxygen free’ low resistance ‘Jumbo’ Hi-Fi speaker cable.
Figure 16. ‘Jumbo’ Oxygen Free Hi-Fi Wire
This multi-stranded wire is a good substitute for Litze wire for larger sized antennas. It
is available in a variety of forms e.g. figure-of-eight, or 4 core (as shown)
For road loops, a tough wire is required, and ‘Coil End Lead’ wire is used. This wire
can withstand a wide temperature range and the thick rubber insulation protects
Figure 17. Road Loop Wire
against damage when in a road surface. Its core is multi-stranded and tinned.
Summary of Contents for 2000 LF Series
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