DR4020 Dual band Digital QRP radio

(3 customer reviews)


A simple QRP digital transceiver.          — Fully assembled and tested– (Now with Kit available as well — Control board assembled/Mainboard needs soldering)

Perfect for outdoor digital radio contacts,such as FT8,FT4,JT65 etc.

Band: 20m and 40m.

Download MANUAL here

Download Kit Assembly Instructions here

Frequency range:

7.0 – 7.2 Mhz ;  14.00 – 14.35 Mhz

Output power: 4 watts @12V

Modulation: DIGI on USB mode

SKU: N/A Category:


Three Options Available:

1,  Basic setup:  DR4020 with 2 straight 3.5mm stereo cables (For Desktop PC and some notebooks with independent Mic/Earphone)

2,  Basic + CITA adapter: DR4020 with 2 straight 3.5mm stereo cables plus a CITA adapter (For Desktop PC and some notebooks with one combined audio jack)

3,  Basic + RPI sound card: DR4020 with 2 straight 3.5mm stereo cables plus a USB sound card (For Desktop PC and Raspberry Pi)

4,  Kit + Basic setup: DR4020 Kit (Soldering skill required)


———– Note: DR-4020 is a pure Single Side Band radio,unless other DSB radio may harm the spectrum. DR-4020 may even use a SSB transceiver by adding an electret microphone 🙂 ——-


Schematics for reference.

How to modify DR4020 as a 20m SSB QRP radio.


See more photos and talk to other owners by joining the group:



Additional information

Weight 0.32 kg
Dimensions 8.8 × 3.8 × 12.4 cm
Adapter Selection

Basic + CITA adapter(ship via FedEx), Basic + CITA adapter(ship via Post), Basic + RPI sound card(ship via FedEx), Basic + RPI sound card(ship via Post), Basic setup(ship via FedEx), Basic setup(ship via Post), Kit + Basic setup(ship via FedEx), Kit + Basic setup(ship via Post)

3 reviews for DR4020 Dual band Digital QRP radio

  1. Stephan, DF6PA (verified owner)

    Really nice rig. Easy setup. Works great with a Raspberry. Very good built quality. Feels solid.
    Tried it with FT8, JS8 and WSPR.

    Too bad there is no 30m edition 🙂

  2. Dwight KO6FE (verified owner)

    Tiny, solid build, works well.

    I found the CITA adapter to have an unreliable connection. I recommend getting the sound card instead.

  3. Steve, K2JY

    Great radio and very good customer service. Have been using the radio on 40 meters for WSPR 24/7 now for 2 weeks, receiving and transmitting and no problems. Output on 40 meters is around 4 watts as measured with my Bird watt meter. And the great thing is that even after 2 minutes of transmitting on WSPR the radio hardly gets hot. Was so impressed that order another one. You get everything you need to go digital.

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