Andrew TYPE 900, TYPE 100, TYPE 120 manual Grounding, Elevation

ELEVATION CHART

" L" IS THE DIFFERENCE BETWEEN THE EARTH STATION ANTENNA SITE LONGITUDE AND THE SATELLITE LONGITUDE

							125°												°
	90				50°			120°								°	°		65		°
									115°	110°	105° 100°		90°	°	80°	75							°
			47.									95°		85
						5°															47
				45		°																	°
																					45
			42																					°
				.	5°																		.5
																							42
	80	5°	40°																		°
			37.																	40
			5°																			°
																					.5
		10°																			37
					35°														°
				32.															35
						5°															°
																				.5
	70	15°																	32
						30°
																	°
						27.											30
						5°													°
		20°																.5
						25°											27
																			°
																	25
	60	25°
DEGREES		30°
	50
		35°
IN

	CLAMP	12
	SURFACE
		13
		11
		9
		6
		5
	14
		6
		4
		8
6	9	7
7		15
10
		Junction Block (9)

FIG. 2.2 - INSTALLATION OF FEED AND FEED SUPPORT LEGS TO ANTENNA

ELEVATION		40°
	40
		45°
	30	50°
		55°
	20	60°
		65°
	10	70°
		75°
	0

IMPORTANT: Sealing RF coaxial connector:

The copper-plated center conductor in the RF coaxial cable, which connects receiver to LNB, can experience electrolysis corrosion at the LNB connector. Moisture and DC current cause this type of corrosion. To prevent corrosion, apply a moderate coat of silicon grease to the center conductor and then wrap the entire connection with COAX-SEAL®tape to seal.

(COAX-SEAL®IS A REGISTERED TRADEMARK OF UNIVERSAL ELECTRONICS, INC.)

GROUNDING

ALL INSTALLATIONS TO CONFORM TO

THE LATEST ISSUE OF THE

NATIONAL ELECTRIC CODE.

*Coaxial Cable

To Receiver

*Ground Block

NEC SECTION 810-20

*Groundwire

NEC SECTION 810-20

*Coaxial Cable

From LNB

*Items Not

Supplied

0 10 20 30 40 50 60 70 80

EARTH STATION LATITUDE IN DEGREES NORTH OR SOUTH OF EQUATOR

CHART 2

8

Ground pole, antenna mount assembly and feed cables must be grounded in accordance with current National Electric Code and local electric codes to protect from surges due to nearby lightning strikes. The illustration below illustrates a typical grounding method.

Clamps that provide a solid connection between ground wire and ground source should be used.

FIG. 2.3 - GROUNDING FEED CABLES

5