Basket
Loop Antenna of a Simple Tube Receiver of Direct Amplification
Fig. 4 shows the circuit and design of a basket loop antenna
intended for use in a simple three- tubes regenerative receiver
for LW- MW. The receiver was described in the reference [5]. For
design of the antenna a disk made of a cardboard or plywoods is
used. The disk has diameter in 120 millimeters and the thickness
in 3 millimeters. Five slots of 45 millimeters in the length of
and 2-3 millimeters in width are done on the disk at equal distance
one after the other. A special ledge for fastening the loop antenna
is made on the disk. Magnetic loop antenna contained 250 turns of
an insulated copper wire in diameter of 0,15-0,25
millimeters. Beginning of the reeling is up of the centre of the
disk.
Taps are tapped from the loop
for tuning the loop to a resonance. Taps are made from 50, 100,
150 and 200 turns. When you doing the taps, do not break off antenna wire,
wind wire
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Figure 4
Magnetic basket loop antenna of a regenerative receiver of LW- MW
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