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C463 Multiwire Broadband Dipole Antenna (2–30 MHz)

15-00463-901 Issue 1, September 2005

Page 7 of 11

Securing the antenna

To secure the antenna:

1

Carefully raise the antenna up the main mast, making sure that the terminating load 
hangs below the antenna.

1

When fully raised and the halyard is tied off, attach the coaxial cable to the mast so 
that it is clear of the antenna wires.

1

Tighten and tie off the halyards on each stub mast, allowing a sag of approximately 
200 mm in each half.

Installing a C463 antenna in a horizontal configuration

Figure 6: Horizontal configuration

Spacing and height

The minimum distance between masts is 30 m.

The minimum height of the installed antenna is 6 m. Heights of 9 to 15 m provide better 
communications; the higher the antenna, the longer the communication range.

Orientation

For effective communications, the line of the antenna wires, and therefore the masts, 
should be at right angles to the preferred direction of propagation.

mast

mast

maximum signal

guy rope

coaxial cable

guy rope

halyard

halyard

Summary of Contents for C463

Page 1: ...instructions apply to all power ratings of this antenna There is a glossary of terms at the end of these instructions The C463 antenna is suitable for erection in the inverted V or horizontal configur...

Page 2: ...cluded with a Codan mast mast gibbet or using the gibbet included with the antenna antenna gibbet This gibbet may be attached to any mast Figure 1 Inverted V configuration using the mast gibbet NOTE T...

Page 3: ...and stub masts sm are in metres For example an installation using a main mast height of 10 m and stub masts of 3 m requires a spacing of 13 m between masts Therefore the overall installation requires...

Page 4: ...end of the gibbet and another at a point close to where the gibbet is attached to the main mast 1 Position the pulleys so that a halyard can run from one pulley to the other then down the main mast 1...

Page 5: ...secure the section then carefully extend each out 1 Raise the centre of the antenna a couple of metres off the ground then temporarily tie off the halyard to the mast Attaching the antenna to the stu...

Page 6: ...the self amalgamating tape with an overlay of high quality electrical tape 3M Scotch 33 or similar to minimise aging of the self amalgamating tape 1 Provide strain relief for the coaxial cable see Fig...

Page 7: ...each stub mast allowing a sag of approximately 200 mm in each half Installing a C463 antenna in a horizontal configuration Figure 6 Horizontal configuration Spacing and height The minimum distance bet...

Page 8: ...base of the mast to the top through the pulley and back to the base again then tie the two ends together 1 Erect the mast 1 Repeat this procedure for the second mast 1 Lay the antenna midway between...

Page 9: ...round Connecting the coaxial cable To connect the coaxial cable 1 Connect the coaxial cable to the balun 1 Wrap the connector with self amalgamating PIB Rotunda 2501 or EPR 3M Scotch 23 tape 1 Cover t...

Page 10: ...he antenna is equidistant between the masts allowing a sag of approximately 400 mm in the centre Reasonable tension needs to be applied to the halyards to level the antenna between the masts and accou...

Page 11: ...re the rope may have moved on the pulley This will involve lowering the antenna All terminations should also be checked as well as the condition of the coaxial cable Glossary This term Means PEP peak...

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