SunSDR2 QRP 5 watt SDR transceiver will impress you! This small HF and 6 meter transceiver uses direct sampling technology to for top range performance. SunSDR2 QRP is the perfect way to get started with SDR, Software Defined Radio!
SunSDR2 QRP is currently not available. We recommend its high performance sibling, the SunSDR2 PRO, with dual RX, 144 MHz and a 20 watts TX.Â
The SunSDR2 QRP is a modern HF transceiver with 5W output power and a wide range of capabilities. Thanks to the powerful ExpertSDR2 software and the advantages of the direct sampling SunSDR2 QRP provides high performance at a reasonable price. It can be used either locally via LAN or remotely using ExpertRemote.
Remote Control
The SunSDR2 QRP can be controlled via Internet using Expert Remote,  a client-server system that allows you to place the transceiver and server in a remote quiet location with good antennas and operate from any place where internet is available. Just connect your SunSDR2 QRP to the Pileup RPI server, provide the server with an 4G or DSL internet connection and you are ready to remotely access your SunSDR2 QRP from anywhere.
SunSDR2 QRP Main Features
Immense functionality for a reasonable price
Designing each our device, we try to reach the best balance between the price and functionality
Full support of the ExpertSDR2 software
Continuously growing and improving ExpertSDR2 software is 100% compatible with the SunSDR2 QRP and will continue to support it for many years to come, for free!
External control connector
Connect up to 8 external devices to 8 powerful keys with open collectors, such as PAs, external filters, rotate antenna devices etc.
Remote control operation
Using it, you connect PTT and CW-key to the E-Coder panel. Microphone and E-Coder are connected to the remotely set up PC
TCI interface
Use it for seamless connection with third-party software like SDC (with its own Skimmer), LogHX, SWISSLOG and RUMlog, more are coming
No need for an external soundcard
The SunSDR2 QRP does not require an external sound card and audio cables, just plug your headphones in the transceiver and listen to the air
16-bit ADC at 122.88 MHz
The SunSDR2 QRP has the best ADC in its price range which provides 122 dB BDR
Sample rates: 48-384 kHz At the same time, you can use a 60 MHz wide bandscope + 2 software RXs, each has a SubRX
Special mode for 768 kHz or 960 kHz sample rate, only for 1 RX + bandscope at the same time
Supports 4M band only for RX in the 2nd Nyquist zone
PC Requirements
CPU Intel Core i3 or higher
2 GB RAM (4 GB recommended)
Video card with 256 Mbyte RAM and OpenGL 1.5 support
Local network connector 100 Mbps or 1 Gbps
OS Windows XP/7/8/10 x32 or x64, OS Linux Ubuntu x64
In the Box
SunSDR2 QRP transceiver
LAN-cable (1.8m)
Power supply cable
RF Cable Mini UHF — HF (PL259) 1Ft (0.3m 1 pc.)
Block Diagram
SunSDR2 QRP Specifications
RF ADC, bit @ MHz
16 @ 122.88
ADC type
LTC2165
RX Frequency range, MHz
0.1…55; 70…70.5
Undersampling, MHz
0.1…500
Independent software receivers
2 + 2 SubRX
Sample rate, kHz @ bit
48; 96; 192; 384 @ 24
768; 960 @ 16 (only RX1)
Bandscope, MHz
61
RX HF filters, MHz
LPF: 58 + 8 x BPF
RX VHF filters, MHz
HPF: 68 + BPF for 4M
BDR on HF, dB
122
Sensitivity, uV
0.1
DR IMD3, not less dB
100
RMDR, dB
107
ATT/Preamp, dB
-20; -10; 0; +10
RF DAC, bit @ MHz
14 @ 122.88
TX Frequency range, M
All amateur bands 160-6
Output power on HF, W
5 (up to 8)
Output power on 6M, W
5
TX IMD3, dB
30
Local oscillator TCXO, MHz +/- ppm
16 +/- 2.5
External 10 MHz oscillator input
+
Built-in audio codec, bit
24
RF input/output
1 (Mini-UHF)
PC interface
LAN 100 Mbit
DC voltage range in RX/TX, V
8…15 / 10…15
Current consumption RX/TX, A
0.3 / 3
Power consumption RX/TX, W
3.6 / 36
Operating temperature, °C/°F
0…+50/ +32…+122
Dimensions L x W x H, cm/inches
18.5 x 10.6 x 4.5/ 6.5 x 3.94 x 1.38
Weight, kg/lbs
0.8/ 1.8
Specifications are subject to change without notice or obligation and specifications are only guaranteed within the amateur radio bands.
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (im running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman, SM0JZT
Tilman SM0JZT –
Rated 5 out of 5
Tilman, SM0JZT –
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (I’m running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman, SM0JZT
Tilman, SM0JZT –
Rated 5 out of 5
Tilman, SM0JZT –
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (I’m running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman SM0JZT –
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (im running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman, SM0JZT
Tilman SM0JZT –
Tilman, SM0JZT –
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (I’m running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman, SM0JZT
Tilman, SM0JZT –
Tilman, SM0JZT –
Great little radio. Have had it on trips to EA8 to run digimodes QRP from hotel.
Ideal setup together with a PA (I’m running e Expert SPE 1.3K) giving a wopping 1kW output.
Great PA-control.
Tilman, SM0JZT
Tilman, SM0JZT –