I have been using the FrSky Taranis system since 2014, I was recently running version 1.52 firmware, they are on version 2.2.3 right now! A friend bought a radio back in 2014 and never used it, his kind wife was nice enough to give him a new Futaba 10 something or other for Christmas so he gave me his unused transmitter, X8R Receiver, and case.
I decided to upgrade the new transmitter to OpenTX 2.0 and see how things go then upgrade my transmitter over the winter. My transmitter has many upgrades that I don't want to loose.
- M9 Hall Effect gimbals
- Futaba Switches
- 2 Watt Speaker
- Larger spreaker grill
- 2000MA Internal Charger
- Six Position switch on S1
Two mods had I wanted to do were the RF Buzz mod and the no click mod. These upgrades were found at the RC Groups Radio Forum. With the speaker upgraded the buzz and click become more apparent. I was reluctant to do these upgrades since it required soldering small surface mount capacitors. With this spare transmitter in hand I decided to take the plunge.
The upgrade to 2.2.3 was easy and I was sorry I waited so long to do it. I was even able to copy the models over from the previous version. Once I seen how easy it was I went ahead and upgraded my current radio.
Next I decided to attempt the No Click and RF Buzz mods.
Step one, bought a 10-600 power electronic microscope with 1080 hd display on Banggood, cost about $35 delivered, works great, truly amazing to be honest.
The No Click mod required a 0402 SMD 1uf capacitor, these things are tiny, .040" x .020". I bought 10 of these from Digikey, maybe $.20 each. It took awhile but finally on the 9th capacitor I was able to complete the modification. I got better with each failure. The mod has eliminated the clicking sound while changing the volume setting.
The RF Buzz mod requires 2 0603 SMD 100 pf capacitors, these are soldered across the speaker leads and to ground. I incorrectly ordered 0402 caps for this, way too small. I ended up using 0805 caps and this size worked just fine, much easier to work with, .080" x .050". This mod has eliminated the audio buzz at higher volume settings. The circuit shown below was posted by Barry2020 on the RC Groups Radio forum and was a great help.
I completed both mods and tested the board, everything worked as expected so this board was installed in transmitter I'm currently using, the sliders on newer radio were much smoother than mine so I went ahead and swapped those into my radio as well.