To connect an Iambic or single lever paddle, a small change needs to be made to the uBITX. Since a paddle requires the tip and ring, 2 resistors need to be installed. Once they are installed the uBITX will be able to use a straight key or a paddle.
Remove the connection from the resistor and key pin. There is no need to disconnect the ground from the jack.
I took the supplied 10k and 2.2k resistors and twisted the leads from 1 side together. Solder the twisted side to the 4.7k resistor and the key pin wire. Heat shrink the connection to protect it from shorts.
Activation of the 2.2k resistor produces a dot and the 10k produces a dash. Typically dot is connected to Tip and dash to Ring.
While testing, I decided to make a matching Straight key and Single Lever Paddle. They look great with the uBITX!
Links
https://km4nmp.com/2019/10/05/installing-a-ubitx-in-a-case/
https://km4nmp.com/2019/10/06/ubitx-3-2-touch-screen/
Latest Posts
- 2:1 Balun For 2m/6m
- 1:1 Choke For 2m and 6m
- 2m Delta Loop Ver 2
- 2m Delta Loop
- Finishing The 6m Delta Loop With 2:1 Balun
KM4NMP 