Radio Navigation Equipment - Signalspaning.se

~~siii
Filter Equipment AN/ARA-9 is a radio range
filter equipment consisting of a low impedance filter which
has.a 1020-cycle band pass section and 1020-cycle band
reject section; and a switch for selecting either of the above
filter sections or a filter-out position.
The primary purpose of this equipment is to permit
the user (normally pilot or co-pilot) to isolate either
the voice or the range signal during periods of reception
of simultaneous transmissions of these signals. The equipment
provides by means of a switch, facilities for voice
reception only, range reception only, or normal use (no
filter in circuit). The switch, separate from the filter unit,
is used to provide the selection of the desired facility.
AN/ARA-9 is used in low impedance installations in which
the output circuits of all of the radio equipments are connected
for low impedance operation.
The switch is designed in such a way that it can
be used either mounted on the lid of the Filter F-21/ARA-9
or mounted as a separate unit.
The filter is now being delivered as part of Interphone
Equipment AN/AIC-3.
Filter Equipment AN/ARA-9 is designed for use
with low impedance interphone and radio equipments in U. S.
Army Aircraft.
There is' no special test equipment required for
Switchbox SA-58/ARA-9
'FILTER EQUIPMENT AN/ARA-9
Component Nomenclature
Filter F-21/ARA-9
Switchbox SA=58/ARA-9
AN/ARA-9
Interior view of Filter F-21/ARA-9
the maintenanoe of the AN/ARA-9.
There were no Army Supply Program. requirements
as 1 February 1945.
POWER INPUT 4-6 V.
TYPE OF SIGNAL.. AUDIO
BAND PASS SECTION I1020 CYCLE
SE0CTION 1020 CYCLE
Filter F-21/ARA-9
TOTAL WEIGHT
Size
2" x 3" x 4"
3" x 2" x 2"
2 LBS.
Weight
2 Lbs.