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NOTE: 

THE FOLLOWING ELEMENTS HAVE SLEEVED SECTIONS. MOST ARE IN PLACE FROM 

THE FACTORY BUT IF NOT, WIPE THE SLEEVE CAREFULLY AND LUBE LIGHTLY WITH OIL 
OR W4-40 PRIOR TO INSERTION. IF THE SLEEVE STICKS OR BINDS AT ALL, 

STOP, STOP 

STOP. 

DO NOT GO FURTHER, REMOVE CAREFULLY AND CLEAN AGAIN. IT MAY ALSO BE 

NECESSARY TO PUSH A CLEAN CLOTH THROUGH THE ELEMENT BEFORE TRYING THE 
INSERTION AGAIN. AT THE FACTORY, WE HAVE FOUND THAT WD-40 IS THE BEST AT 
LOOSENING THE BIND BETWEEN TWO SECTIONS OF ALUMINUM TUBING. 

3.  Element #4 is next. Again place an element clamp block with a 1-1/4” hole at 1/4” from the butt of 

the element. Align with element hole as before and secure using an 8-32 x 1-3/4 screw and 

locknut. Add the small clamp block and 1/4-20 x 1” flat head bolt and locknut loosely. If it is not 
already there, insert a 1-1/8 x 20” sleeve in the butt of the element and hold in place temporarily 
with a 1/4-20 x 1-3/4” bolt and locknut but don’t tighten yet. Continue adding the 1”, 3/4 and 1/2” 
sections securing with the 8-32 hardware listed on the drawing. Tighten each joint securely so no 
wiggle is felt when moving the element. Finally, remove the 1/4-20 x 1-3/4 bolts and slide each 
element half on the dual saddle center insulator assembly. Re-install the bolts and tighten.  

8-30LP9 ASSEMBLY MANUAL 

 

Summary of Contents for 8-30LP9

Page 1: ... log periodic is a rugged versatile performer designed for years of trouble free service Ma chined aluminum element to boom clamps and solid fiberglass rod center insulators are just a few of the unique structural features in this remarkable antenna The 8 30LP9 is a single antenna system that matches up with today s modern solid state equipment Maritime Government Commercial MARS and Scientific us...

Page 2: ...addles hold the 1 1 4 diameter fiberglass rod center insulators and the plates mount on the boom with 4 saddles Element 1 and 2 have 3 4 vertical support risers Element 3 does not The center insulator is 1 1 4 diameter Push on two 1 1 4 poly rings and center them at just over 6 apart Set this assembly on the 1 1 4 aluminum saddles and add the top saddles Hardware for this whole assembly is shown o...

Page 3: ...s grounded to the boom A 7 8 x 30 sleeve couples the two 3 4 element halves together with the same bolts that hold the bottom saddles Assemble loosely at this time LOG PERIODIC ELEMENT ASSEMBLY 1 REFER TO ELEMENT ASSEMBLY SHEET 2 Start with the smallest elements Elements 8 7 6 and 5 are similar There are two halves to each element Do the following for both halves Locate and install a 1 hole ELEMEN...

Page 4: ...clamp block with a 1 1 4 hole at 1 4 from the butt of the element Align with element hole as before and secure using an 8 32 x 1 3 4 screw and locknut Add the small clamp block and 1 4 20 x 1 flat head bolt and locknut loosely If it is not already there insert a 1 1 8 x 20 sleeve in the butt of the element and hold in place temporarily with a 1 4 20 x 1 3 4 bolt and locknut but don t tighten yet C...

Page 5: ...8 30LP9 DIMENSION SHEET ...

Page 6: ...8 30LP9 ELEMENT ASSEMBLY ...

Page 7: ...f Open the 5 16 turnbuckles till just one thread shows inside the body of the turnbuckle Add a thimble to each turnbuckle eye and secure the cable at each turnbuckle with two clips 6 Element 1 is last and requires the most attention SEE LINEAR LOADED ELEMENT ASSEMBLY drawing This element is almost the same as 2 except for the linear loading Prepare the element as shown except for the linear loadin...

Page 8: ...LINEAR LOADED ELEMENT ASSEMBLY ...

Page 9: ... the rear plate on your first mark ALIGN the elements horizontal perpendicular to the eyebolts and tighten bolts EVENLY and firmly Use element 1 as the element alignment reference 10 Mount element 2 and align and tighten as before Note it is usually easier to begin installing the phasing lines at this time between each new element mounted Mount the next to the longest pair as shown on the dimensio...

Page 10: ...buckles now or at the time of installation on the tower 13 Check ALL hardware for tightness Check ALL element sections especially tip sections for correct placement Make any final adjustments to linear loading tension 14 Attach feedline section to balun Route from element 8 back to boom to mast plate Secure at regular intervals with tape or nylon ties 15 When mounting this log periodic on a tower ...

Page 11: ...ent section 3 4 x 049 x 48 SOE 2 Element tip section 3 4 x 049 x 52 50 2 Element tip section 3 4 x 049 x 33 00 2 Element section 1 2 x 049 x 62 0 2 Element tip section 1 2 x 049 x 60 0 2 Element tip section 1 2 x 049 x 58 50 2 Element tip section 1 2 x 049 x 53 625 2 Element tip section 1 2 x 049 x 45 0 2 Element tip section 1 2 x 049 x 34 0 2 Element tip section 1 2 x 049 x 32 0 2 Rod phasing 3 1...

Page 12: ... 3 4 x 3 0 Delrin black 7 Linear loading arm 375 x 1 5 x 4 0 1 hole 4 LL Shorting bar halves 1 4 x 3 4 x 6 4 Insulator stabilizer bar 1 4 x 1 x 6 black ABS bar 2 Support arm for stabilizer bar 375 x 1 50 x 2 875 alum 1 1 4 hole 2 Turnbuckle plate 2 x 5 x 3 16 1 Balun mounting L bracket 2 x 4 5 x 1 8 1 Eyebolt 3 8 x 6 forged 2 Eyebolt 1 4 20 x 2 1 2 zinc 2 Turnbuckles 3 8 eye and jaw forged 2 Turnb...

Page 13: ...20 x 1 1 2 stainless 8 Bolt 1 4 20 x 1 1 4 stainless 4 Bolt 1 4 20 x 1 stainless 4 Screw 1 4 20 x 1 countersunk flathead stainless 16 Nut 1 4 20 locking stainless 68 Screw 8 32 x 2 panhead stainless 6 Screw 8 32 x 1 3 4 panhead stainless 18 Screw 8 32 x 1 1 2 panhead stainless 26 Screw 8 32 x 1 1 4 panhead stainless 40 Screw 8 32 x 1 0 panhead stainless 42 Nut 8 32 locking stainless 132 Set screw ...

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