M2 Antenna Systems 7-10-30LP8 UP-KIT Manual Download

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M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722

Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com

03/29/13

Rev.00

M2 Antenna Systems, Inc.

Model No: 7-10-30LP8 UP-KIT

FOR CONVERTING THE 10-30LP8 TO A 7-10-30LP8 'SKIP LOG'

OVERVIEW OF UPGRADE:

Very little has to be done to your original 10-30LP8. In fact the only element

that you even work on is the longest element. If it is possible to remove just the rear element and leave the
rest of the antenna up, that would be the easiest. Please look over the ASSEMBLY DETAILS AND TUNING
CHART before beginning and familiarize yourself with the new parts to be added. Note the basic element sec-
tions do not change in any way.

Refer to the two “add-on” assembly drawings for screw and bolt sizes when not called out in the text.

NOTE: WHEN USING THE 5/64” ALLEN WRENCH PROVIDED BE SURE THAT IT IS FULLY INSERTED
INTO THE 8-32 SET SCREWS TO BE SURE FULL TORQUE CAN BE APPLIED WITHOUT STRIPPING
THE SET SCREW.

1. Begin by installing the VERTICAL SUPPORT TUBE. Remove the two center bolts in the element clamp
plates. Feed the 1/4-20 x 3 1/2 bolts through the clamp plate holes and add the 1/4-20 locknuts. Tighten se-
curely.

NOTE: If you have our early version log periodic, the bolt pattern may not match the square tube
holes. Place the square tube in position, mark the plate where the holes should be and drill 1/4" holes
through your clamp plates. Then assemble as noted above.

3. Next you should prepare each element half by adding the STABILIZER INSULATOR AND DUAL WING
SKIP SUPPORT ARMS. Then add the 3/4” AND 1/2” LINEAR LOADING ARMS. Do this by opening the 1" to
3/4" element joint on each element half and sliding on the parts to their approximate positions as shown. Then
reconnect the element joints. The white plastic rod insulators can be installed at this time in each support arm.

4. Place the element on a level surface with the support post up. FROM THE ELEMENT BUTT SIDE, feed a

3/16” x 72” LINEAR LOADING ROD through the flat support insulator and on to the un-insulated side of
the DUAL SUPPORT ARM until 5/8” extends beyond arm. Install (4) and tighten the (2) 8-32 x 1/4" set
screws locking this rod in place. Install two SHAFT RETAINERS, one at a time, onto this rod tip and snug
up to linear loading arm.

NOTE: to start the RETAINER, hold the 3/8 x 3" PUSH TUBE in your hand with one end between your
thumb and forefinger. Now center retainer on this end, “dish” into tube, and hold in place with the same
thumb and forefinger. Grasp the linear loading rod near the end with your other hand and firmly push the
retainer onto the rod.

5. In the same way, feed another 72” LINEAR LOADING ROD through the flat support insulator and on

through the white polyethylene insulator until 5/8” extends beyond insulator. Tighten the (2) 8-32 /4” set
screws locking the rod in the arm. Install two SHAFT RETAINERS, one at a time, onto this rod tip and
snug up to insulator. Install two 8-32 x 1/4” set screws into a 1/4” x 1/2” x 1” SPLICE BLOCK and install
block on 1/2” rod tip up against the retainers. Tighten set screw. Repeat for other element half.