305 BROADCAST AKG/7N User Manual Download | Manualshive

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305 Br

oad

cast AK

G/7

N,

M, F

User Manual

Circular Polarization

FM Antenna

This manual provides important guidelines for installing. Review this

information carefully for proper installation. Both unit specifications

and manual contents are subject to change without notice.

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Summary of Contents for AKG/7N

Page 1: ...ual Circular Polarization FM Antenna This manual provides important guidelines for installing Review this information carefully for proper installation Both unit specifications and manual contents are...

Page 2: ...WER ANTENNA ANTENNAS DB WEIGHT BAYS n rs 1 1 1 1 1 1 1 5 1 5 4 5 6 7 5 1 4 1 4 3 4 6 1 8 mt s 4 3 mt s 9 3 mt s 14 3 mt s 19 3 mt s 9 18 36 54 72 2 4 6 8 Bays Gain Gain Aperture kgs These wide band FM...

Page 3: ...10mm DISTANCE ESTIMATION BETWEEN FM ANTENNA BAYS Wave Length 300 f MHz Distance between antenna bays any antenna types d d suggested x 0 85 88MHz 300 88 3 41 mt d 3 41 x 0 85 2 9 mt 98MHz 300 98 3 06...

Page 4: ...ay attention to follow the A B C D letters After inserting the elements lock nuts lightly Insert the central link and lock it to the inner brass conductor coming out from the central insulator Lock st...

Page 5: ...er than 2 0 1 may be unsatisfactory Some technicians will refer to match as Return Loss in which case rates of 14 dB or 12 dB apply Performance at a R L of less than 9 dB may be unsatisfactory 1 What...

Page 6: ...hart This is a crude method If the antenna is of relatively new and the model number is known the factory may still have the production test data sheet which will identify its frequency by Serial Numb...

Page 7: ...ective If the second one yields the same bad result the problem is unlikely to be the antenna Perhaps the transmitter is not operating on the expected frequency Substitution of a dummy load is an opti...

Page 8: ...can drastically affect performance and is not covered by warranty 9 Are the antenna drain holes open It is a good idea to shake the antenna during the above tests to ensure there are no mechanical in...

Page 9: ...titution with an identical unit of known quality is the method of choice when a defective product is suspected The typical VSWR for a good antenna is 1 5 1 Although some site engineers may specify a m...

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