Features:
Covers VHF & UHF bands from 25MHz-1700MHz.
Supports AM, FM, CW, DAB+, ADS-B, LSB.
Aluminum enclosure with internal thermal tape.
Plusmn0.5 PPM temperature compensated TCXO.
Fully assembled and ready to use.
Small size board and light weight.
USB Powered, accessories include a USB extender cable.
SMA golden female antenna connectors. It is also more durable and has lower insertion losses.

Package included:
1 x A300U
1 x USB Extended Cable
1 x SMA Antenna
1 x Service Card

Picture

Quellen/Source:
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- Youtoube | Andreas Spiess | #242 How to Build a Cheap 433 - MQTT Gateway (RFLink, Arduino, ESP8266, Node-Red, Weather Station)
- Youtoube | Andreas Spiess | #209 How to Hack your 433 MHz Devices with a Raspberry and a RTL-SDR Dongle (Weather Station)
- Banggood.com | RTL SDR Receiver R820t2 USB RTL-SDR Dongle with 0.5ppm TCXO SMA MJZSEE A300U Tester