qfh 3d models

QFH antenna

With access to a reliable dimensions calculator, detailed information about the QFH antenna can be found on jcoppens.com/ant/qfh/calc.en.php. Instructions follow for building this efficient antenna: Begin by constructing the central support...

This design is based on available files here: https://www.thingiverse.com/thing:1343716/files You can calculate dimensions using this site: http://jcoppens.com/ant/qfh/calc.en.php For more fabrication information, visit:...

... diameter, standard shielded and satellite cable. You can use the calculator here to calculate the rest of the sizes: http://jcoppens.com/ant/qfh/calc.en.php I've included both STL files and Fusion 360 source files so you can modify them as needed.

NA8E Instructions I utilized this QFH Calculator: http://www.jcoppens.com/ant/qfh/calc.en.php This antenna was constructed using 1" PVC as a base and 3/4" PVC for horizontal spacers. I fastened the PVC parts with M3 screws, and employed RG8/U...

Here is the rewritten text: I have STL files for my design of a QFH antenna tailored specifically for NOAA APT, which were simulated and tested with a vector analyzer to match APT frequencies. ... You can access the full guide on how to build it,...

Helical antenna for meteorological satellites NOAA 137,5MHz SRW=1.7inClose and SRW=2.4inOpen100MHz SRW=1.01inClose190MHz SRW=2.9inCloseOriginal -> https://www.thingiverse.com/thing:765794http://www.jcoppens.com/ant/qfh/calc.en.phpGcode para PLA 205Cº...

Please check out this link for instructions: http://www.planetary.org/blogs/jason-davis/2015/20150921-how-to-download-weather.html For the dimensions, see this link: http://www.g4ilo.com/qfh.html I'm using a 32mm drain pipe for the pole and 20mm...

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 long...

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 long arms...

So I made this QFH antenna and needed a weatherproofing cap and supports to hold the wire, I thought I could share for those who might find them useful. The Antenna was built with 40 mm pipe and 4mm aluminium fencing wire. There are 40mm, 50mm and...

John Coppens' online QFH antenna calculator: http://www.jcoppens.com/ant/qfh/calc.en.php Additions Made in April 2015: A photograph taken today demonstrates successful antenna reception with the antenna, featuring the SDR RTL2832U dongle as its only...

These are 3D printed parts for a 2 meter quadrifilar helix (QFH) antenna as described by G4ILO at http://www.g4ilo.com/qfh.html. My variant doesn't use uPVC plumbing pipe, but electrical installation tubes 16mm (5/8") and 19mm (3/4") diameter, the...

Support elements for building QFH antenna for 137 MHz. The parts are designed to fit onto 40mm diameter PVC pipe. Both STL and Solidworks files are provided. This project is a work-in-progress. ... # PVC Pipe Dimensions * outer diameter: 40.2 mm ...

For starters, we'll use a vertical QFH setup with an aluminum rod diameter of 10 mm and a length of 500 mm. This will provide us with a solid foundation for our antenna system. To support the rod, we'll use another aluminum tube with a diameter of...

This design is remixed from "QFH 137MHz Antenna by SynarK". The top part of the cut-out was altered in dimensions and a base with an opening for SMA connector was designed. ... 50 Ohm coaxial cable (RG174) was used as feed, resulting in antenna returns...

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 its the...

I added cylindrical "connectors" that simplify using epoxy with all parts, making the assembly process both easier and more visually appealing. To improve connectivity, I replaced the original SMA ended wire with a different one, connecting it...

Quadrifilar Helix Antenna used to receive satellite imagery from the NOAA satellite constellation. Typically used with a raspberry Pi and the Raspi-NOAA software to automatically capture satellite passes...

The user specifies a mast with an antenna that measures 25 millimeters in diameter and 50 millimeters in length.

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 419mhz...

This object was made in Tinkercad. ...Edit it online https://www.tinkercad.com/things/0EXk0KxP3WW

This is another crucial antenna for the GOES satellites, as these are geo-synchronous, allowing them to be accessed from any time, and they operate on two primary broadcast frequencies: 402 MHz, and 1690 MHz. The older NOAA 15, 18, and 19 satellites...

Upscaled to new heights by amplifying the original to 141.176% of its former frequency, transforming it from 2.4GHz to 1.7GHz. One setup is slightly smaller than the other, boasting a larger diameter but shorter height. Both antennas are roughly one...

... the L2C and L5 GPS bands, but still gets great coverage on L1. Assembly instructions and background on the antenna design can be found at the links below. http://jcoppens.com/ant/qfh/calc.en.php https://www.pinterest.com/pin/525373112773545290/

... can be used with this pipe cover. If you're interested in making your own QHF antenna, I suggest that you take a look at this website: http://tinhatranch.com/how-to-build-a-qfh-quadrifilar-helix-antenna-to-download-images-from-weather-satellites/

I designed this cap for a QHF (Quadrifilar Helix Antenna) antenna project to run the coax from the inside of a 1 1/4 schedule 40 PVC pipe.I assume that any standard panel connector can be used with this pipe cover.If you're interested in making your...

Dimensions are calculated using John Coppens' webpage http://jcoppens.com/ant/qfh/calc.en.php . The STL file has been reduced in Meshlab. Remember that this is experimental. At the very least, you'll need advanced radio amateur skills to obtain any...

To attach this part to your arm and effector, simply disassemble the head once and connect the QFH and effector using M4 screws. Make sure to add a nut like the photo for secure installation. ... Parts List: * Print Parts: 1 piece * M3 Screws (12mm):...

These precision guides were engineered to craft a Quadrifilar Helix Antenna (QFH) using an infinite balun design tuned to 137.5 MHz for the NOAA 19 Satellite as described below: Original Build Guide:...