FIELD EXPEDIENT TEST EQUIPMENT (CONT)
flashlight bulb, flashlight battery,
and three pieces
of wire. When the free
ends of the wires are
touched to a circuit
(or a short)
bulb will glow.
If a two-cell
is used with
only one battery,
the bulb will glow
with one-half its
Making an RF Transmitter Output Tester.
This device is used to determine if the radio is sending a signal to the antenna.
a. An RF transmitter output tester can be made from a neon light bulb and a piece
of CG-1773 RF cable. Solder the bulb to the cable as shown in the illustration.
Connect the cable to the ANT connection on the f rent of the radio. When the radio is
keyed, the bulb will glow if RF power is present at the antenna connection (this does
b. Another way to check for transmitter output is to hold a common (wood) lead
pencil tip l/4-inch to l/8-inch from the ANT connection. If RF power is present, a
yellowish-white arc will jump from the connector to the pencil tip when the radio is