PVC-encased Vertical Antennas for 2m

These PVC-encased 2m vertical antennas were built years ago.

PVC-encased TV Ribbon J-Pole & Slim Jim Antennas

One is a J-Pole, housed in a thick-walled  ¾” PVC pipe, with a SO-239 connector. The other is a Slim Jim, in a thin-walled PVC pipe, with a BNC.

Both were homebrewed, using 300 Ω TV Ribbon, with good results (SWR < 1.5:1). The ends were sealed against water ingress using 'M-Seal' (epoxy sealant in dual component lump form).  

     

TV Ribbon

Thanks are due to W0IPL - OM Pat & N4UWJ - OM Don, for construction details of the J-Pole & Slim Jim respectively.

Related post: Sleeve Dipole Antenna for 2m

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Audio Signal Injector

This decades-old audio signal injector was wired on a piece of perfboard.  All components were sourced from the junk box.

Audio Signal Injector

The enclosure was fashioned from an empty tapered spool of industrial sewing thread, a cosmetic tube cap and a film canister cap on which the push button switch was fixed.

A machine screw, filed to a point and fixed to the cosmetic tube cap, served as the prod.

Audio Signal Injector - Schematic

Over the years, this unit has helped service the audio stages of several ham rigs.

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