Ramsey Electronics LPY915 manual Cut a slot into the PVC boom, Building a Reflector Grid

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parallel with the seam, the antenna will not function properly.

The boom length that positions the Logi at the focal point of the reflector is also critical factor. This will require a bit of trial and error to get things just right. Use a piece of PVC pipe (1/2” to 7/8” will work well) with a slot cut in the end just big enough to wedge the entire Logi in place. The narrow front edge of the circuit board should be positioned between 1.5” to 3” from the seam formed by the two reflector plates. PVC couplers can be mounted in the vertex of the reflector to allow you to slide the boom in and out while testing. Once the optimal position of the Logi is set, tighten the coupler and your ready to go!

BUILDING A REFLECTOR GRID

Building a reflector grid antenna as a home-brew project is a little harder then the corner reflector. It would be very difficult to achieve the proper parabolic shape for the reflector by banging on an old BBQ grill! The best way to insure your antenna will function the way you want is to use a pre-fabricated dish. There are a few different dishes that are easy to get and very affordable. We

10.0" -12.0"

90° Corner Reflector

 

12.0"

Insert the Logi

 

narrow end first.

Cut a slot into the PVC boom.

Logi front edge placed 1.5" to 3" from vertex.

LPY2 8

Image 8
Contents ‘LOGI’ LOG Periodic Antenna Ramsey Transmitter Kits LOG Periodic Antenna Introduction Antenna DescriptionVia Bottom Top Standard HOOK-UPLogi LOW Frequency Modification Building a Corner Reflector Cut a slot into the PVC boom Building a Reflector GridLPY915 mounted on a Grid Reflector Vswr Ramsey Kit Warranty Ramsey ELECTRONICS, INC Required ToolsAdditional Suggested Items