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The Parasitic Elements “A”, “B”, and “E” are mounted onto the crossarm at their match marked 
locations, with 2 ¼” long, 1/4” Bolts, Reinforcing Clips, Lockwashers and Nuts as shown in Figure 3. 

2 in.(5.08 cm) approx. 

LOCKWASHER & NUT 

The antenna main Mounting Clamp is assembled to the crossarm at the unmarked holes (perpendicular 
to the element holes) with 2¼” long, 3/8” diameter Hex Head Bolt as shown in Figure 4. 

FIGURE 3 

FIGURE 4 

ELEMENT 

CROSSARM 

REINFORCING 
CLIP 

HEX HEAD SCREW 

1/4-20 UNC X 2 ¼ in. 

(5.72 cm) LONG 

CROSSARM 

HEX HEAD SCREW 

3/8-16 UNC X 2¼ in. 

(5.72 cm) LONG 

REINFORCING CLAMP 

MOUNTING PLATE 

3/8 in. (.95 cm) DIA. U-BOLTS 

MAST 

Содержание Y81-A

Страница 1: ... and Y 81 series Yagi have a two piece crossarm The antenna main mounting clamp is used to assemble the two halves together and for this purpose four 4 3 8 Dia Bolts are supplied Start with the director element and the dipole elements and assemble them to their marked locations on the crossarm as shown in Figure 1 Shims are supplied with Y 101 65 4 B 5 6 C FM D H and E to be assembled with the dip...

Страница 2: ...ASHER NUT The antenna main Mounting Clamp is assembled to the crossarm at the unmarked holes perpendicular to the element holes with 2 long 3 8 diameter Hex Head Bolt as shown in Figure 4 FIGURE 3 FIGURE 4 ELEMENT CROSSARM REINFORCING CLIP HEX HEAD SCREW 1 4 20 UNC X 2 in 5 72 cm LONG CROSSARM HEX HEAD SCREW 3 8 16 UNC X 2 in 5 72 cm LONG REINFORCING CLAMP MOUNTING PLATE 3 8 in 95 cm DIA U BOLTS M...

Страница 3: ...r to the ground rod 2 Keep antenna and downlead a safe distance from any power lines The antenna Braces are assembled to the crossarm at the unmarked holes perpendicular to the element holes with 1 4 x 2 Hex Head Bolts Reinforcing Clip Washer Lockwasher and Hex Nut The opposite ends of the braces are assembled to the mast mounting pipe using the channel and 3 8 U Bolt Washer Lockwasher and Hex Nut...

Страница 4: ...na support braces can be inverted or in stalled going up at an angle instead of going down at an angle CAUTION must be used to insure that the antenna radiators be oriented in spaces identical in phase condition therefore to eliminate any interfer ence between brace and antenna a 2 in spacer not supplied must be installed between antenna crossarm and brace bars as shown in Figure 7 BRACE SPACER NO...

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