16
938A-1 antenna-vertical orientation
A
. Unwind the support throw lines and enough antenna wire from each bobbin, for
the frequency in use. Markings on the antenna wire are provided to simplify this
operation. Connect the ends to the dipole center junction terminals as shown in
figure 9. Connect snap fasteners to provide strain relief.
Figure 9. Center Junction of 938A-1 Antenna
NOTE:
In some cases, better transmission is obtained if the operating frequency is three or
five times the frequency at which the antenna is set.
B
. Make a small loop in the antenna wire at the measured point. Insert it into the
hole on the bobbin terminal and secure the wire by tightening the thumbscrew,
Refer to figure 10, Repeat for the other half of the antenna.
Figure 10. 938A-1 Antenna Securing
C
. Connect the plug on the 15.25-metre (50-foot) antenna feeder cable to the socket
Summary of Contents for COLLINS MP-20
Page 1: ......
Page 6: ...6 Figure 3 Accessories Components Sheet 1...
Page 8: ...8 Figure 3 Accessories Sheet 2...
Page 22: ...22 Figure 14 377L 2 Receiver Transmitter Control...
