|FlySky radio, note antenna on top|
|stock TX module|
|TX removed, note cut wire in upper right|
I started by pulling the TX out and cutting the coax wire. Then I opened the radio case and removed the antenna. I also opened up the TX case and desoldered the two tiny leads of the coax wire and removed the cut piece of wire.
|one screw holds antenna|
|coax wire inside TX|
The next step was to figure out how to securely mount the antenna on the TX case. I searched my shop and found a fiberglass tube from an old umbrella that fit the inside diameter (9/16") of the antenna base perfectly (and my wife wonders why I keep all of this "junk"). I cut a piece 1 5/16" long, shoved it inside the antenna base and used the stock screw on the antenna to hold it together.
|antenna and tube|
Next I drilled two holes through the TX cover and into the fiberglass tube for mounting screws. One more hole was drilled in the TX cover to feed the wire through.
|cover and antenna drilled|
To make the installation even more secure, I globbed some PC7 (man's best friend) around the antenna mount and onto the TX cover. I let it set for 24 hours.
The next step was to solder the coax wire back the TX circuit board. For those that are not familiar with coax wire; there is a single lead through the center of the wire surrounded by a plastic tube. Around the plastic tube is a woven metal sleeve of wire as a shield. That is then covered with typical wire coating. As you can probably tell from the pictures, the wire is tiny. Stripping and separating the two wires was difficult, even for my favorite stripper! I ended up cutting the plastic tube off the center wire with an X-Acto and a jewelers loupe. Both leads then needed to be soldered to two tiny pads on the circuit board that were about 2 mm apart. Actually, the stripping was a lot harder than the soldering. I added a little hot glue to the wire to relieve any tension on the solder joints.
|coax wire soldered back on|
|ready to assemble|
|finished and installed|