Movies for TV - Early Television Foundation

FILM TRANSMISSION EQUIPMENT 97
in schools. In cases where a longer throw than that obtainable
with an incandescent lamp is required, a small arclamp can be
attached in its place and any length of throw within reason ob-
tained. The illustration shows two 1600-foot reels in position.
With this amount of film, a program of forty-four-minutes' dura-
tion can be obtained with sound film without changing reels.
There are larger reels which hold sufficient film for a one-hour
show and which are generally used on television.
Another type of portable 16 mm projector, the RCA Model
400, is shown in Figure 4-2. This is designed
for similar uses and
is similar in film routing to the TPI6A television projector. It also
is supplied in two carrying cases. It will be noticed that the lamp-
house is also similar to that of the television projector.
Finally, the head
section of the RCA
Brenkert projector is
shown in Figure 4-3.
This, of course, is a
35 mm model. The
light gate is described
later in the section on
television projectors.
Sound is reproduced
in the sound
head in the section
below the oil level
gauge
on the lower
right of the picture
Fig. 4-2. RCA Model 400
16 mm projector.
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