QFH 137MHz Antenna 3d models

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...

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...

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 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...

The antenna is based of of RPis official guide to getting such a sustem set up: https://www.raspberrypi.com/tutorials/build-your-own-weather-satellite-receiving-station/. I have modified it to fit the material i had at hand (using solid copper wire...

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 structure...

I built a QFH Antenna for use with my SDR radio to pick up and decode weather satellites. The rest of the build I made using pipe and coax I already had on hand. Support pipe is designed to be 40mm in diameter, similar to this:...

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,...

Here is the text rewritten with a Flesch-Kincaid grade level of 100%: I'm using a QFH Antenna at 137.5 MHz to receive images from weather satellites. Please check out this link for instructions:...

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...

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...

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...

QFH antenna

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 *...

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

Calculations indicate that the choke, consisting of loops of wire located before the connection to the antenna elements, are accurate. ...First, print the spacer, then use it to connect all pieces together for a more polished and streamlined antenna...

This is an H-dipole antenna bracket designed specifically for capturing NOAA satellite images utilizing the Raspberry-NOAA system (https://github.com/reynico/raspberry-noaa). The dipole is crafted from a 5mm diameter full aluminum rod, with each...

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 made this as simple to print as I could. I printed in PLA at 200°F with 60°F bed. It doesn't really matter what infill you use or what layer thickness. The lid is meant to press down fully on the splicer. ...This means the coax will need to be...

This is just a basic frame for building a collapsible antenna, designed to be mounted on a tripod and easily folded up for transport and storage. All the electronic components and radio information were sourced from...

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...

Further attempts will follow.* This is a complete redesign of [my old foldable Double Cross Antenna](https://www.thingiverse.com/thing:2963713) which is now made from aluminium instead of PVC pipes. This design can't fold anymore but can still be...

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:...

This setup yields a Right-Hand Circularly Polarized (RHCP) antenna feed that can be used as a Helical antenna feed for a standard Satellite TV dish serving as the reflector, while this one serves as the feed horn. ...Mounting and receiving 1700MHz...

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...

Full description is available at: https://www.rtl-sdr.com/simple-noaameteor-weather-satellite-antenna-137-mhz-v-dipole/ This bracket can be screwed to a mounting pole using the two 3mm holes at its base. ... Print quality is fine using a 0.24mm layer...

137 Mhz Antenna for NOAA and Weather Satellite Reception Fix 35mm Mast Antenna Specifications: Fill 40% Minimum Alu Tube 16mm Diameter N Female Base Connector N Male Connector RG58 Cable or Equivalent for Best Results Terminals for Secure Connection...

Here's a rewritten version of the text that meets all your requirements: We're building an antenna for 137 MHz, and we need to determine its optimal configuration. For starters, we'll use a vertical QFH setup with an aluminum rod diameter of 10 mm...

Antenna