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MOUNTING

The 

 is designed to accept a 2” O.D. mast. A 

 heavy duty mast designed for this purpose

is recommended. If mounted on a guyed tower, break up the guys every 3’ by using egg insulators in the
guy lines for the top 20’ of the guy cables. Also, the guys should be located at least 12’ below the level of
the boom. Although it may be desirable to mount the antenna on a mast so that the elements clear the top
of the tower, this should not be attempted unless you are certain that your installation is sturdy enough for
this type of installation. Experimentation has shown little, if any, effect on the operation of the antenna by
mounting it 2’ above the top of the tower, or by mounting a rotator so that it lies between the vertical elements.
The first consideration should always be the mechanical stability of the antenna.

BOOM TO MAST TILT FEATURE

The 

 x 3 

 hex bolt, 

 lockwasher, (3) 

 flat washer cut and 

 hex nut are provided

to give a tilt feature to the boom, if desired.

A hole will have to be drilled through your mast to accommodate the 

 bolt.

Place the parts as shown below.

NUT

 TO MAST PLATE

5

I

Summary of Contents for M108HV

Page 1: ...ONLY DIFFERENCE BETWEEN THE HV BEAMS AND THE INSTRUCTIONS INCLUDED IS THAT THE HV BEAM HAS BOTH SETS OF ELEMENTS ON THE SAME BOOM UUPLEASE ADD THE FOLLOWING INSTRUCTIONS TO THOSE SUPPLIED Mount the f...

Page 2: ...AG 4 EG2 6 EGG INSULATORS ____ W58P 32 5 8 EXTRUDED ALUMINUM CLAMPS ____ S21 42 10 24 MACHINE SCREWS ____ N11 42 10 24 SQUARE NUTS ____ N12 8 10 LOCK WASHERS ____ S28 1 3 HEX BOLT ____ N15 1 HEX NUT _...

Page 3: ...rough 4 show the correct assembly instructions It is highly recommended that rope be put in the elements to prolong their life All hardware should be tightened securely and then coated with silicon ru...

Page 4: ...and eight of the j 16 lockwashers N02 and hex nuts NOl Avoid over tightening the U bolts as doing so may crush and weaken the boom Now reverse a 3 U bolt so that it points away from the boom to mast...

Page 5: ...inus 1 Pull the sag out of the boom by tightening the outside nuts on the guy support then lock the inside nuts against the guy support IO 24 x l 2 MACHINE S C R E W IO 24 SQUARE ELEMENT W58 CLAMP FIG...

Page 6: ...are certain that your installation is sturdy enough for this type of installation Experimentation has shown little if any effect on the operation of the antenna by mounting it 2 above the top of the t...

Page 7: ...16 0 17 6 16 7 16 0 17 6 16 7 15 I I 17 5 16 7 IS I I 17 5 16 6 15 I I 17 5 16 6 15 I O 17 4 16 5 IS I O I T 4 16 5 15 I O IT 4 16 5 IS 9 IT 3 16 4 15 9 IT 3 16 4 15 9 IT 3 16 4 IS 8 I 7 2 16 3 15 8 I...

Page 8: ...g point The gamma match has 2 adjustments First is the capacitor adjust and second is the slider adjust Connect a SWR bridge coax between your transmitter and the antenna and check the SWR If adjustme...

Page 9: ...a c t y o u r l o c a l i n s t a l l e r i f c o n s u l t a t i o n o r a s s i s t a n c e i s r e q u i r e d A l l t o w e r a n d a n t e n n a i n s t a l l a t i o n s s h o u l d b e t h o r...

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