AOR LA800 Instruction Manual Download | Manualshive

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SUPER LOOP ANTENNA

L

A800

Instruction manual

AOR Ltd.

Authority On Radio Communications

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Summary of Contents for LA800

Page 1: ...SUPER LOOP ANTENNA LA800 Instruction manual AOR Ltd Authority On Radio Communications ...

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Page 3: ...ontents 1 Introduction 1 2 Included in this package 2 3 Hardware setup 3 4 Operating instructions 6 5 Directivity of a loop antenna 7 6 Characteristics of a shielded loop antenna 8 7 Options 9 8 Specifications 10 ...

Page 4: ...solution to keep the antenna away from noise sources by setting it up in quiet areas While the control tuning box stays at hand s reach the WATERPROOF loop element can be permanently setup outdoors 10kHz to 500MHz 6 position band switch to peak only on the wanted signal Built in low noise amplifier for exceptional 20dB gain Loop element diameter of 80cm for maximum reception performance Remote tun...

Page 5: ...ement 1 Two U bolts for mast mount 1 Control box 1 Control cable LAN type 10m 1 BNC F BNC F RG 58U coaxial cable 10m 1 AC power supply 1 Printed instruction manual 1 for Japanese market only 1 Product sticker for the loop element box 1 1 4 3 2 5 6 7 8 9 2 ...

Page 6: ...ll as others seek professional assistance Installation of this antenna near power lines is dangerous Do not work on the system or connect or disconnect cables during periods of lightning activity Do not work on a wet or windy day Do not locate the antenna near overhead power lines or other electric light or power circuits or where it can come into contact with such circuits When installing the ant...

Page 7: ...t are usually sold at home centers The loop element s electronic circuitry is housed in an ABS plastic box water and dust proof to IP65 standard The control and coaxial cables enter the plastic box through two rubber gaskets as shown below Connect these to their respective sockets ANT OUT and REMOTE Coaxial cable Control cable 4 ...

Page 8: ... receiver side connect the control cable to the control box and the coaxial cable directly to your receiver s antenna socket Finally connect the AC power supply to the control box ＬＡ To connect LA800 to an antique receiver with 600Ω antenna terminal use the optional MC 600 Impedance Matching Transformer LA800 Loop outdoors Indoors Receiver s antenna input socket AC power supply Control box 5 ...

Page 9: ... location of the tuning For your reference when the dot is on top as on the above illustration the tuning PEAK is approximately in the middle of the selected band For example for band switch position 1 150kHz to 800kHz it would be roughly peaked on 475kHz Tuning is most critical above 3MHz For best performance of LA800 and optimal reception conditions make sure the selected band is appropriate for...

Page 10: ... the loop can be used for interference reduction On the other hand received signal strength is greatest in the directions indicated by the arrows Horizontal radiation pattern of LA800 NULL NULL NULL Angle from which magnitude of the radiation pattern decreases to zero In other words these are the sides from which the antenna receives the least Maximum reception performance is achieved when these s...

Page 11: ...ic and magnetic fields in the immediate vicinity of an antenna Those fields decrease rapidly in strength with distance and the induction field is usually ignored However wires and other metal objects near the loop can take energy from a passing wave and produce induction fields that can induce spurious voltages in the loop A shield over a loop antenna will not appreciably decrease the amount of ma...

Page 12: ...op effect between antenna and receiver Supported frequency range 40kHz to 30MHz MC 600 Impedance matching transformer Passive impedance matching transformer interface which allows your LA800 to be connected to any antique receiver with a 600Ω antenna terminal Supported frequency range 10kHz to 30MHz MC 600 has the same isolation feature than the GT 1 accessory 9 ...

Page 13: ...ndent figures with supplied AC adapter Impedance 50 Ohm Sizes mm projections included Loop element 800 W x970 H x84 D Control box 120 W x38 H x101 D Weight Loop element Approx 1 4kg Excluding mount U bolts Control box Approx 240g Supported mount mast 30 60mm Supplied accessories AC power supply Control cable LAN type 10m BNC F BNC F RG 58U coaxial cable 10m Two U bolts for mast mount Printed user ...

Page 14: ...Memo ...

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Page 16: ... AOR Ltd 2 6 4 Misuji Taito ku 111 0055 Tokyo Japan www aorja com Authority On Radio Communications Sept 25 2013 ...

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