Let's start off with the list of it items that we'll need:
Materials:
- Computer:
- Laptop/Desktop Running Windows
- Radio Piece:
- 1X Baofeng UV5R
- Technically any radio that will do VOX
- 1X 2.5mm-to-3.5mm Audio Cable ( or adapter)
- 3ft is good
- 1X 3.5mm Audio Cable
- 3ft is good
- 1X Ground Loop Isolator
- https://www.amazon.com/Packs-Ground-Isolator-Stereo-System/dp/B0B2JSN8NR/ref=asc_df_B0B2JSN8NR/
- Mine is labeled 'Jabinco' But these will do.
- 1X USB Sound Card
- https://www.amazon.com/gp/aw/d/B00IRVQ0F8
- Software:
- http://f6dqm.free.fr/soft/simplex/en/simplex.htm
Steps:
1- Configure VOX on UV5R ( I have it on Level2)
2- Install The Simplex Software.
Familiarize yourself with it. While there are many options we'll only be using the repeater function.
3- Plug in your USB Sound card and test it.
I'm sure you have some headphones and microphones lying around.
4- Plug stuff in.
2.5mm Baofeng Plug --> 2.5 to 3.5 MM Coupler --> Microphone In on USB Sound Card
3.5mm Baofeng Plug --> Ground Loop Isolator--> Speaker Connection on USB Sound Card
Troubleshooting:
- Make sure that the audio output and input are correct
- Try out different volume settings on both your computer and the Baofeng radio
-- One thing that I decided to do was to mark the location of the volume sweet spot.
- Hit Auto On.
