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This is a simple form for building a directional antenna for the 915 MHz band. It's based on the DK7ZB "Quadlong Hentenna" ( https://www.qsl.net/dk7zb/Quadlong/Hentenna.htm ), but scaled for 915 MHz and turned sideways for vertical…
This is a cover that friction fits over the original round, black steam knob. As it is just a cover for the existing knob, it avoids all the issues around reverse-engineering the existing shaft and metal clip. This does mean however that…
The t-shaped ears around the base let you attach the perch assembly to the feeder using a rubber band or thin wire. I printed this using Polymaker PETG on a Prusa I3 MK2. No supports or rafts are required. I've included the OpenSCAD…
The front wall of the liner is lower than the other sides to allow insertion and removal of the drip tray; make sure you insert the liner with the lower wall facing outward. The liner is a snug fit in the drip tray slot; gentle downward…
Plans for the antenna can be found here: https://www.hamuniverse.com/wonderbar.html I used #14 insulated common household wiring for the coil and #16 hook-up wire for the "bowtie" part and the 2-turn coupling loop. The bowtie shape I made…
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