Electronics | Amateur radio | Nerdy Stuff
My favorite VTX antenna is the Aomway 4-leaf cloverleaf (sometimes referred to as a skew planar, but “cloverleaf” actually comes from it’s radiation pattern resembling a four leaf cloverleaf!)
They are cheap, work well, and are the most rugged out of the cheapies.
Of the four I have, return loss measurements were a respectable: 19.5dB, 19.5dB, 18.5dB, and 21.5dB.… Read more...
This modification was inspired by an article on BoltRC’s blog about replacing the Taranis’ in-built antenna with an SMA jack, which then allows connecting different, higher gain, antennas.
With the BoltRC mod, I didn’t like the idea of hot melt glue holding the SMA connector in place, and the method documented below has the SMA jack rigidly mounted through the … Read more...
In this video we take a look at performing a return loss sweep on a ‘Heliaxial24’ 2.4 GHz 6½ turn helix antenna from Circular Wireless.
Construction is first class, along with it’s first class 75 Euro price tag, but the results are rather disappointing.
You might expect a good return loss dip somewhere between 2400 – 2500 … Read more...
This video takes a look at performing a return loss sweep on a set of IBCrazy 2.4 GHz Bluebeam Ultra antenna set.
Sweeping is performed using a PC Driven Windfreak SynthNV.
… Read more...The Windfreak SynthNV is a 34.4MHz to 4.4GHz software tunable RF signal generator controlled and powered by a PC running Windows XP, Windows 7, or
Fed up with breaking VTX antennas and LiPo battery leads getting clipped by propellers whilst learning to fly a Mini Quad?
Here’s an idea, and costs almost nothing.
At this stage I’m not concerned about any potential drag, so if you are, best you press your back button now! 😉
This is all about protecting the antenna during the … Read more...
Did a rough comparison between the quad patch antenna, and the standard dipole today.
The F550 quad was flown out to just over 300m away, and hovering at 25m AGL.
SMA attenuators were inserted in series with the patch, until similar copy was received on both antennas.
It was determined that the gain of the patch was at least … Read more...
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Eltek Flatpack2 24/48V Touchscreen Controller Kit
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YK04 Remote Control Kit
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K3NG Universal Rotator Controller Kit
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K3NG Universal Remote i2c Starter Kit
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