Counting matching models…
So for those that have been following me for while on youtube and TinyGS, here is another treat, I have been working on multiple versions of a modified QFH antenna to get the smallest size and while keeping decent performance. This file…
A QFH antenna has an omnidirectional pattern with enough gain to operate either on the uplink or the downlink for communicating through the various amateur radio satellites that use the 2m and 70cm bands. These 3D printed parts can be…
This is a 3D printed spiral support structure for the wires of a 435 MHz QFH antenna. The antenna provides a dome-shaped hemispherical pattern that is suitable for operation (transmit or receive) on various amateur radio orbiting…
General After reading an interesting artikel about Quadrifilar Helical Antennas I got inspired and wanted to print one The creation of this antenna described in detail at QFA Antenna . Models and simulations are available on GitHub:…
Mounting pipe 32mm, hole diameter 8mm.
419mhz Center Freq. Hope the bandwidth is good. This was model 100% to a the calculations of online calculations to the 0.5mm. Going to be intresting to see calculation vs result. I suspect the plastic will have effect but since center is…
An easier to print qfh antenna that can be adjusted for variance in pipe sizes. this should fit 1/2 pcv pipe/conduit as well as any pipe within approx 21-24mm Improvements include. ~ Symmetrical parts ~ Correct size for 137.5 ~ Short and…
This antenna is a work in progress for me. Your results may vary. All dimensions from https://jcoppens.com/ant/qfh/calc.en.php This is designed for 3mm wire (14awg). I made the mistake of using THHN wire for the one in the image, which…
This is a mount for a TinyGS.com ground-station with a QFH antenna form for an ESP32 / LILYGO T3_V1.6.1 433MHz Lora module and QFH antenna form from:
For: https://www.thingiverse.com/thing:4260044 To let the helix form naturally, I let 3 BODY parts spin freely. to do this i attach these rings under and above a BODY
This is a mount for a TinyGS.com ground-station with a QFH antenna form for an ESP32 / LILYGO T3_V1.6.1 433MHz Lora module and QFH antenna form from:
