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 sections 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 securely.
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.
2. Refer to the 7-10-30LP8 element# 1 assembly detail drawings and prepare each element half by adding the STABI-
LIZER INSULATOR, DUAL WING SKIP SUPPORT ARMS AND ELEMENT OVERHEAD SUPPORT CLAMP. Then
add the 3/4” AND 1/2” LINEAR LOADING ARMS. Do this by opening the element joints on each element half and
sliding on the parts to their approximate positions as shown. Then reconnect the element joints. Finalize the positions
of the parts as describe in the drawings. The white plastic rod insulators can be installed at this time in each support
arm.
3. 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.
4. 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. Tight-
en set screw. Repeat for other element half.
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2017 M2 Antenna Systems Incoporated
11/13/17
Rev.01
M2 Antenna Systems, Inc.
Model No: 7-10-30LP8 UP-KIT
