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Thanks to its directionality, it is also ideal for minimizing the effects of unwanted interfering local terrestrial 

signal and noise.   

The loop element features a 5 positions band switch and a High-Q poly-variable capacitor to tune and peak 

the wanted frequency, while achieving maximum rejection of unwanted out of band signals ? valuable 

additional selectivity for your receiver f s fr on-end stages. 

 

Using the LA380 active loop aerial 

 

1)

 Connect the power supply to the rear 

panel DC input socket, the LA380 requires 

12V DC at 50mA (9-15V DC). A 9V 

regulator is built into the LA380 control unit. 

To minimize noise, keep the power supply 

as far away from the LA380 as practical. To 

minimize electrical interference from the 

power supply, for the receiving range 

between 10kHz and 1.6MHz, you may wish 

to consider use of a (non supplied) low 

noise regulated power supply.   

 

2)

 Connect the supplied BNC-BNC coaxial 

lead between the LA380 and your receiver f s  aeri al i nput. If  your r ecei ver i s fitt ed  w

it h  a  connect or  ot her t han

BNC, an appropriate adaptor must be used.   

3)

 Insert the receiving loop element into the top panel BNC socket of the LA380 cabinet.   

4)

 Push the red front panel power switch, the green LED will illuminate to confirm that power is connected to 

the control unit. 

5)

 Switch on the receiver and tune to the desired frequency. Select the correct frequency range with the 

band switch on the loop element. There are 5 positions to choose from: 

 

 

 

 

 

 


60 kHz to 3 MHz 

40 MHz to 500 MHz. 

Others 

Shortwave bands 33 to 7 Meters. 

9-40 MHz 

Shortwave bands 100 to 30 Meters. 

3-10 MHz 

Specifically for US, UK & Japan time signal. 

60 kHz 

Specifically for Japan time signal 

40 kHz 

Comments 

Frequency 

Summary of Contents for LA380

Page 1: ...HI Q active loop aerial LA380 Instruction Manual AOR LTD Authority On Radio communications R ...

Page 2: ...A350 covering only 200kHz 30MHz Full frequency coverage 10kHz 500MHz with one single receiving element LA350 needed 4 switchable elements Directionality reception pattern properties YLHZ IURP WRS RI WKH ORRS A rotating loop antenna is very directional The loop will allow signals on opposite sides to be received while off the sides of the loop the signal will decrease or be nulled out For example t...

Page 3: ...ing range between 10kHz and 1 6MHz you may wish to consider use of a non supplied low noise regulated power supply 2 Connect the supplied BNC BNC coaxial lead between the LA380 and your receiver f s ae ri a l i npu t If you r r ece i ve ri sfitt ed w it h a connec t o r o t he r t han BNC an appropriate adaptor must be used 3 Insert the receiving loop element into the top panel BNC socket of the L...

Page 4: ...ose to a window in order to achieve the best possible reception In case your listening station is too far way from a window you have the possibility to use a non supplied BNC BNC coaxial patch lead between the control box and the loop The lead shouldn t be longer than 5m Specifications subject to change without notice or obligation LA380 Control box with loop AC power supply BNC BNC Coaxial patch ...

Page 5: ...r indoor use only do not use it outdoors We are not responsible for any damages to the antenna or your radio equipment due to improper use E OE AOR LTD 2005 Version of June 15 2005 Copyright c 2005 All rights reserved AOR LTD 2 6 4 Misuji Taito Ku Tokyo 111 0055 Japan http www aorja com ...

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