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2M Tape Measure Uda-Yagi (updated) — image 1

2M Tape Measure Uda-Yagi (updated)

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Tape Measure 2M Beam Parts for Fox Hunting or 2M HT Transciever. Can use for transmit with bypassed (or no) attenuator.

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Updated at source:

Model information

Category
Electronics
License
Creative Commons — Attribution — Noncommercial — Share Alike

Updated part geometry for better fit with 1/2" Sch 40 PVC (28-Jan-2026)

I give Uda first billing since he never gets the credit he deserved because his name isn't as cool sounding as Yagi.

This project is for parts to make a 2M beam Uda-Yagi with a single piece of 1/2" PVC plumbing pipe (about 38.5" long). No other PVC fittings required. Hardware is just a handful of small sheet metal screws (m3 or #6).

The driven element is designed for a split element with a gamma match (approx 8" of copper wire with crimp ring terminals).

This design includes director, driven-element, and reflector mounts that allow the tape to be folded over and stored. I coat the ends of the tape measure sections (after filing/sanding) with Plasti-Dip.

The mounts are designed for use with Bearcat (Uniden) scanners to hold them firmly in place. I use scanners for fox hunting with Scouts as part of the Radio Merit Badge becuase I can't turn Scouts loose with transcievers (not licensed). I liked the snap-on version best.

I printed all parts out of PETG, 25% infill. All parts designed using AutoCAD (files included).

Supports are minimally required for some elements (like the scanner mount and beam mounts). I used painted tree type.

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