Radio Navigation Equipment - Signalspaning.se
Radio Navigation Equipment - Signalspaning.se
Radio Navigation Equipment - Signalspaning.se
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<strong>Radio</strong> Compass AN/ARN-7 is an automatic bearing-indicating<br />
radio compass operating from a 400-cycle,<br />
115-volt power supply. It provides aural reception of modulated<br />
radio signals as an ordinary 100 to 1750 kc. radio<br />
receiver and automatic loop orientation and loop azimuth<br />
indication in degrees. Itis similar to <strong>Radio</strong> Compass SCR-<br />
269-G and employs all its components with the exception<br />
of <strong>Radio</strong> Compass Unit BC-433-G and <strong>Radio</strong> Control Box<br />
BC-434-A.<br />
Frequency range of the AN/ARN-7 is divided<br />
into four bands covering 100 to 1750 kc. It is manually<br />
tuned fran either of two remote positions, with bands switched<br />
electrically from the position having control. When in -<br />
stallations are made which u<strong>se</strong> only one remote control,<br />
no switching of control is necessary andthe one radio control<br />
box u<strong>se</strong>d has control at all times.<br />
The new receiver, <strong>Radio</strong> Compass R-5/ARN-7,<br />
is a 15-tube superheterodyne capable of C.W., tone and<br />
voice reception. The addition of the 100-200 kc. band makes<br />
possible long range operation in connection with established<br />
low frequency transmitters in many parts of the world.<br />
AN/ARN-7 was designed originally as an interim<br />
compass, capable of low frequency reception, pending completion<br />
of the development of <strong>Radio</strong> Compass AN/ARN-6.<br />
Test equipment for AN/ARN-7 includes Test Set<br />
I-100-A.<br />
Army Supply Program requirements as of 19<br />
October 1944 were 25,394 for the calendar year 1945.<br />
TUBE COMPLEMENT<br />
NO. TYPE NO. TYPE<br />
4 6K7 1 6L7<br />
2 6F6 1 6J5<br />
2 6B8 1 6N7<br />
2 2051 1 6SC7<br />
1 5Z4<br />
Nay 1945<br />
Loop and Loop Housing for AN/ARN-7 installed in fu<strong>se</strong>lage<br />
above pilot and co-pilot on C-64 aircraft.<br />
POWER INPUT 115 VOLTS, 400 CYCLES<br />
FREQUENCY 100 KC TO 1750 KC<br />
TYPE OF SIGNAL CW, TONE, VOICE<br />
RANGE 100 MILES<br />
SENSITIVITY 40 MV/METER<br />
SELECTIVITY 10 TIMES RESONANT<br />
INPUT FOR 6.3 KC.<br />
ANTENNA LOOP<br />
16/B/KC. 7 Ia C<br />
KNOWING THE TRANSMIT TING Fi<br />
GIVEN GROUND STATION AND IT<br />
POSITION OF THE AIRCRAFT MA<br />
AN/ARN-7<br />
In additior to its high frequency band of 2800 to 5900 kc., <strong>Radio</strong> Compass AN/ARN-7 provides facilities for<br />
homing a .d plotting of aircraft positions similar to tho<strong>se</strong> of other Automatic <strong>Radio</strong> Compas<strong>se</strong>s.
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