qrpguys efhw 3d models

You can find more information about this project at http://ws0ta.blogspot.com/2017/04/so-you-want-to-build-efhw-with-qrp-traps.html. ... This protective case safeguards the toroid and is designed not to alter the Q of the coil, a feature that still...

This is a lightweight Pole crafted from PVC tubes, designed for use in electric installations that allows you to suspend EFHW antennas during hamradio HF portable operations, making it an ideal choice for easy SOTA activations. In this example, the...

Thimble used for fishing or amateur radio for EFHW or dipole antennas using bare wire. The models in both files are the same size but one has rounded edges. Forms the loop in your leader and prevents wear at the terminal points Protect cable...

I was building an autotransformer balun for my EFHW antenna, and I needed to twist the primary coil tightly with the secondary. The wire I chose had a diameter of 1.6 mm (14 AWG), which is relatively stiff and hard to twist evenly. To make the task...

Interested users can find extensive information about end fed half wave antennas (EFHW) on Facebook. The enclosure's lid and base are intentionally separated to accommodate larger print bed limitations. ...An additional feature has been added: a deep...

One of his winder design ( https://www.thingiverse.com/thing:5385215 ) integrates a clip for a Male BNC connector.Seeing that, I designed an antenna winder that has a clip for a Female BNC connector.You can buy the kit and see the build instructions...

The configuration I built (see photo of completed build) is a 1:49 unun to match the impedance of an EFHW antenna with 50 ohm coax. However, it's designed with OpenSCAD so is fully parametric and if you use OpenSCAD it can be configured to house...

Hardware Required: 1 Batenna, 1 PL-259, 1 Toroid and 16 ga magnet wire (wound: 9:1 Random Wire, 49:1 or 64:1 for EFHW), 22 ga Wire with 1.7mm or less outside diameter, small wire ties, paracord, Bungee Cord 5mm. Optional: Male to Female RF Coax...

The QRP balun can be built as either a 20 watt 49:1 or EFHW or a 30 watt 9:1 random wire antenna. The same parts can be used, minus the capacitor for a 9:1 random wire antenna. All windings are radial, with no crossover across the toroid because of...

On the photos, you can see a 12v 5a power supply and mic to the LHS of the 'case' and now, but not in the photos, on the RHS, I have a home-brew EFHW multi-band antenna, SOTA Beams ATU and miscellaneous portable QRP operating items. Everything I need...