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Log Periodic Aerial Instructions

If you contact us about a problem you MUST include a link to THIS page with a note to confirm that you have read it and any other pages to which it refers.

Please make sure someone is there to accept delivery. We can't send this by post.

Note: this aerial comes from the manufacturer in a rather flimsy cardboard box and is easily damaged if the delivery driver tramples on it. For this reason we strongly recommend that you open the box and inspect the aerial immediately on receipt. If possible, do this before the driver leaves and refuse to accept it if damaged. Don't sign if the box looks damaged. Otherwise, sign for it "NOT INSPECTED" and contact us immediately if the aerial is unusable.

The rod elements can be straightened if slightly bent but, if one is snapped, the aerial will not perform 100%. The central plastic clip should be checked as it is an insulator and forms part of the structure. Make sure the "bag of bits" is present and complete.

Instructions for assembling log-periodic aerial

Instructions for assembling log-periodic aerial

Right-click to download PDF assembly sheet.

Suitable for vertical or horizontal polarisation.

Suitable for vertical or horizontal polarisation

silicone grease in a syringe

Your log-periodic aerial comes partly assembled.

You will need silicone grease (supplied), a length of double-screened cable (e.g. WF100) and a matching 'F' connector plug.

f connector plug

F connector coupler
self-amalgamating tape

The cable can either be the full length required to reach the masthead amplifier (if used) or it can be just a few centimetres longer than the aerial itself, in which case you'll also need an 090-3078 threaded 'F' barrel, two 'F' plugs and self-amalgamating tape to weatherproof the joint if it's outdoors.

rubber boot

We also recommend you use a "rubber boot" (supplied) to prevent the cable from chafing on the sharp edge of the square-section tube. (This can be used instead of the plastic insert which is supplied.

Cut the end of the cable at a shallow angle

Please follow these instructions to complete the assembly.

Cut the end of the cable at a shallow angle to make a sharp "chisel point".

Push the cable into the widest end of the rubber boot and pull the boot down the cable.

Feed the cable into the rear of the lower square-section tube (the one with the bracket attached) and keep pushing until it emerges from the front. Cut off the chisel-point end and strip the cable to fit an 'F' plug as shown on this page:

http://www.satcure.co.uk/tech/fconn.htm

Connect the cable to the small Printed Circuit Board

Connect the cable to the small Printed Circuit Board (PCB) and tighten using fingers only (no spanner). Push the PCB fully into the square-section tubes and coat it with silicone grease to protect it from condensation.

Fit the plastic cover over the end of the aerial and PCB.

silicone grease in a syringe

Note: we recommend that silicone grease is used on all connections, including the centre core of the cable, the 'F' plug threads and the sockets which are a tight press-fit in the square-section tubes.

Put a generous amount of silicone grease on the rubber boot and push it into the square-section tube to seal it and protect the cable from chafing on the sharp edge.

Denso tape

Secure the aerial to the mast for vertical or horizontal polarisation, using the 'U' bolt, brackets and nuts provided. Coat the threads with silicone grease to minimise future rusting. (The whole bracket can be bound with our "Denso tape" if you want to ensure that it remains in pristine condition for future dismantling).

Bring the cable in a gentle curve (no kinks) down to the mast and secure with cable ties, being careful to "nip" the cable (prevents rattling) without crushing or kinking it..

If you did not read this page before ordering and need these additional parts, we may be able to add them to your order if you contact us before despatch. Please select "Order Change or Addition", HERE.

Give the bracket two generous coats of paint

Give the bracket two generous coats of paint or wrap it with Denso tape. Even though it's galvanised, it will rust eventually, producing horrible brown stains down the wall.

Secure your ladder to the wall so it can't move. Mark the bolt positions on the wall through the bracket with a paint aerosol or crayon.

Drill the 10 mm holes. Fit the U bolts loosely to the bracket with silicone grease on the threads. Apply silicone grease to the wall bolts and fix the bracket in place. Lift the mast and drop it into the U bolts. Nip them up, align the aerial and tighten the nuts. Wrap the U bolts with Denso tape if good weather protection is desired.

loft spike

For loft- or ceiling-mounting a "loft spike" pole can be used. It may be necessary to drill a small pilot hole before attempting to screw the threaded end into the wood.

the aerial may be fixed directly to a ceiling

As an alternative, the aerial may be fixed directly to a ceiling with a couple of thin metal straps with holes in both ends. Make a wooden frame and screw that to the ceiling. Fit LED strings around the frame. Make sure the aerial works (with the lights switched on) then finish by screwing a square of plywood to the frame. Make it overlap the lights. Paint it to match the ceiling (or as desired).

The cables can run above the ceiling.

Note: fluorescent tubes will create a lot of interference so use LED lamps.

©2006-2012 SatCure

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