If you get into amateur radio there are two devices you’ll probably not get past.

  1. For listening an RTL-SDR USB stick
  2. For sending a Baofeng

The most famous Baofeng is the UV-5R, but I got myself an UV-9R Plus. Why?

Well, that was the one available at that time.

Antenna

The connector on the device is SMA male. So the antenna needs to be SMA Female.

Be careful if you use a long, high set antenna in a crowded place (city) the input could be too big and overcharge components.

Contacts

Since the device is marketed as waterproof you don’t have any jacks, but contacts on the side, covered by an easy to unscrew screw.

Contacts on transciever:

1 2 3 4 5 6 7
 A B C D E F
  • 4 GND
  • 5 TX
  • D RX

(Source)

Accessories

  1. Headphones
  2. Data cable

The headphones consist of one earplug with a microphone and a button. On the other end you have a 6 pin contact (connecting to contacts 1, 3, 4, A, B, C).

The data cable consists of two cables:

  • USB to double jack (3,5mm stereo and 2,5mm stereo)
  • double plug (fitting to the above) to 6 pin contact (connecting to contacts 1, 3, 4, A, B, C)

Double jack connectors:

  • 2,5mm: Headphones
  • 3,5mm: Microphone
3,5mm jack:
=|=|>
| | |___MIC-Rx Data PTT
| |_____MIC+
|_______+V

2,5mm jack:
=|=|>
| | |___SPK+
| |_____TX Data
|_______SPK-PTT GND Data

Source: Double jack diagram