(5) For suppression of noise encountered in mobile
source, use a PP-4766/GRC-159(V) d.c. power
operation, use the following procedures:
supply with a Collins 440E-1 to connect it to the
(a) Use resistor-type spark plugs.
(b) Install coaxial bypass capacitors at the
(4) If a mobile speaker is desired, use Loud
ignition coil, generator, and voltage regulator leads.
speaker, Permanent Magnet LS-116/U (NSN 5965-
Use bracket-mounted coaxial capacitors in the battery
and generator leads to the voltage regulator and
0.005- f (or smaller) disk ceramic or mica capacitor
from the field lead to ground. DO NOT use larger
than a 0.005- f capacitor here unless a 4-ohm resistor
is placed in series with it.
Figure 3-3. Mobile station interconnections.
Change 1 3-5