Direct sampling receiver based on 122.88MHz 16bit single channel ADC converter covering HF 6m and offering the possbility to exploiting the undersamplig mode covering FM Broadcasting Band and exploring part of VHF Band (135-160)MHz.
ELAD FDM-S2 Ranges and specs:
HF: 9kHz-52MHz MDS: -132dBm @14MHz, Clipping lev -8dBm
FM: 74-108MHz sensitivity <2uV 12dB SINAD @98MHz, Clip lev -3dBm
The ADALM-PLUTO active learning module (PlutoSDR) is an easy to use tool marketed by Analog Devices Inc. that can be used to approach the Software Defined Radio (SDR) technology or to learn the basic concepts and topics of electronic engineering or again to explore advanced topics in the field of radio frequency communications, both in “instructor” and “self-learning” mode.
PlutoSDR allows students to better understand the real RF world around them and is applicable to all students, at all levels, in all areas. Learning in a practical way with PlutoSDR will guarantee a solid base particularly suitable for students who follow a scientific, technological or engineering study path.
The PlutoSDR active learning module is a tool that “amplifies” the relationship between theory and practical activity in the field of radiofrequency.
PlutoSDR provides a personal portable laboratory that, when used with a host, can increase classroom learning. A variety of software packages like MATLAB or Simulink provide an innovative graphical user interface (GUI), which allows intuitive use and minimizes the learning curve, allowing students to learn faster, work smarter and explore more!
Robin Getz looks at various RF problems (third harmonics of mixers, RF pollution, required RF filters), and how new innovated tools, and open source software can help measure and mitigate these issues.
The ADALM-PLUTO active learning module is a learning tool for everyone.
Based on the Analog Devices AD9363, it offers a reception channel and a transmission channel that can be managed in full duplex, able to generate or measure analog RF signals from 325 to 3800 MHz, up to 61.44 MSPS, with a width 20 MHz band. PlutoSDR is completely autonomous, truly pocket-sized (it fits perfectly in the shirt pocket) and is entirely powered by USB with the default firmware. With support for OS X , Windows and Linux , it enables the exploration and understanding of RF systems regardless of where the user is or when.
In practice, adding RX filters, an antenna and a pair of VHF-UHF-microwave amplifiers with PlutoSDR it is possible to build a 144-430-1200-2400 MHz quad-band, both for SSB use and for digital transmissions, using the PC as control console SDR. With the necessary adjustments it also accepts full-duplex for satellite use.
The cost is just over 100 euros, truly within the reach of every experimenter.
Features
Portable self-contained RF learning module
Cost-effective experimentation platform
Based on Analog Devices AD9363 Highly Integrated RF Agile Transceiver and Xilinx® Zynq Z-7010 FPGA
RF coverage from 325 MHz to 3.8 GHz
Up to 20 MHz of instantaneous bandwidth
Flexible rate, 12-bit ADC and DAC
One transmitter and one receiver, half or full duplex
MATLAB® Simulink® support
GNU Radio sink and source blocks
Libiio, a C, C++, C#, and Python API
USB 2.0 Interface
High quality plastic enclosure
PlutoSDR Host Interface
The PlutoSDR supports the following USB device classes:
X Mass storage (for easy firmware updates)
X Serial (for interacting with the Linux kernel/userspace on PlutoSDR)
X Networking/RNDIS (for loading and controlling custom ARM® applications)
X Libiio (bulk USB for SDR data transfer and control)
X Device firmware upgrade (for backup firmware upgrades)
Open Source
The PlutoSDR open source firmware is built from Das U-Boot, the Linux kernel, and Buildroot. As part of the class materials, the firmware is able to be run, copied, distributed, studied, changed, and improved with Vivado® HL WebPACKTM Edition (license free). Supporting USB 2.0 On-the-Go, the PlutoSDR can attach to a variety of USB peripherals (wired networking, Wi-Fi dongles, audio, etc.), which extends functionality. All documentation is open and available at wiki.analog.com/plutosdr.
SDR PLUTO
Connecting RF Theory with RF Practice
The PlutoSDR works as a portable lab that, when used with a host, can
augment classroom learning. MATLAB® and Simulink® are two of the
many software packages supported by PlutoSDR, and it provides an
intuitive graphical user interface (GUI) so students can learn faster, work
smarter, and explore more.
Made for Teachers, Students, and Self-Learners
The PlutoSDR features independent receive and transmit channels that can
be operated in full duplex. The active learning module can generate or acquire
RF analog signals from 325 MHz to 3800 MHz at up to 61.44 megasamples
per second (MSPS). Small enough to fit in a shirt pocket, the PlutoSDR
is completely self-contained and entirely USB powered with the default
firmware. Because PlutoSDR is enabled by libiio drivers, it supports OS X®,
Windows®, and Linux®, which allows students to learn and explore on a
variety of devices.
The Adalm Pluto by Analog Devices is a Portable self-contained RF learning module, based on Analog Devices AD9363--Highly Integrated RF Agile Transceiver and Xilinx® Zynq Z-7010 FPGA. Includes one transmitter and one receiver, half or full duplex and cover 325 MHz to 3.8 GHz
With dozens of available online tutorials for SDR-based projects, PlutoSDR boasts labs and teaching material covering topics such as ADS-B aircraft position, receiving NOAA and Meteor-M2 weather satellite imagery, GSM analysis, listening to TETRA signals, pager decoding, and many more!
SunSDR2 DX is a direct sampling 100 watt SDR transceiver developed for the serious DX’er and contest operator.
The SunSDR2 DX transceiver based on the well-known SunSDR2 PRO transceiver with several hardware improvements.
Like its predecessor, the SunSDR2 DX covers all HF bands plus 50 MHz and 144 MHz VHF bands with a general coverage receiver. It combines high performance and 100 watt transmit power on HF Bands in a compact size with a LAN interface for maximum flexibility.
Remote control over DSL or mobile 3G or 4G connections provide a full SDR experience using the Expert Remote System.
Hardware improvements in comparison to SunSDR2 PRO:
Improved supply system, which leads to less heating and less power consumption
HPF for VHF (100 MHz) to eliminate strong out-of-band stations coming from HF
LPF for HF (70 MHz) to eliminate strong out-of-band stations coming from VHF
New VHF LNA chip – PGA103+
Newhigh-performance built-in stereo audio codec 24 bit with 114 dB dynamic range
Sturdy DIP-type ExtCtrl connector
New connectors: external tuner control, external fan control, GND
Red Pitaya STEMlab
122.88-16 SDR Kit Basic is tailored for HF+50MHz SDR & RF
applications that requires DAQ systems with high precision. The
122.88-16 SDR features improvements based on feedback received from HAM
radio operators & research laboratories. The new device comes with
two 16-bit ADCs, 50ohm inputs & 14-bit DACs 50ohm outputs. The board
has a 3x bigger dual-core Arm Cortex A9 + Xilinx Zynq 7020 FPGA, ultra
low phase noise 122.88MHz clock and 1Gbit ethernet connectivity.
RF inputs are improved in terms of distortions, noise & crosstalk which significantly improves receive and use of antenna diversity. A bigger FPGA provides more real-time processing capabilities. The clock was changed from 125MHz to 122.88MHz so it’s more hardware compatible with HPSDR. The new device has not changed form factor, so it directly replaces the current STEMlab platform. The improved performances of the STEMlab 122.88-16 SDR make it easy to build SDR transceivers & other scientific devices to compete with high-end products.
STEMlab 122.88-16 Features
Created for HF+50MHz SDR and other RF applications
Comes with two 16-bit ACDs 50ohm inputs & 14-bit DACs 50ohm outputs
Three times bigger dual-core Arm Cortex A9 + Xilinx Zynq 7020 FPGA
Bigger FPGA provides more real-time processing capabilities
Established in 2013 produce kits and solutions to build your own SDR transceivers, Skimmer servers and wspr devices for the amateur radio market, and digital test equipment, and learning tools for the academic and research markets.
Since SSB-Electronic introduced the first compact digital receiver, the “Perseus”, a few years ago, time has not stopped. The integration of the PC or notebook into the hobby has prompted the demand for something more.
With this premise the Zeus ZS-1 was born.
After software-defined receivers have been the state of the art for several years, the ZS-1 now opens up all the possibilities of “direct sampling” known from the SDR on the transmission side. You see what you send and hear …
The new Zeus ZS-1 is a new direct sampling SDR transceiver capable of covering all classic HF bands in transmission, including the WARC bands, with an adjustable output power of 15 watts.
In reception Zeus ZS-1 covers frequencies from 300 kHz up to 30 MHz. The high quality design and high quality bandpass filters ensure that transmission signals are absolutely free of unwanted harmonics.
A broadband spectrum display and a cascading display displayed simultaneously inform the user about activity within a given band. Zeus ZS-1 is equipped with selectable AGC, automatic notch filter and continuous variable filters for CW / SSB / AM.
Zeus ZS-1 can be easily connected to the PC via a standard USB 2.0 cable.
An integrated interface allows operation via an IP address Zeus operating software written specifically for the ZS-1, offers access to a wide range of functions including a large Tx EQ, a compressor, an integrated CW keyer that includes recored messages.
In addition to the choice between key and paddle, the CW generation can be even selected via the keyboard.
Zeus ZS-1 can be used in combination with many amateur radio programs like Ham Radio Deluxe, SDR.com and others.
A dozen good reasons to buy a ZS-1:
best software defined transceiver in ARRL test
particularly pure output signal through predistortion
divisible interface (operation / spectrum), dual monitor suitable, very practical in combination with decoder software
additional window for audio signal
intuitive GUI with practical user guidance: left mouse button = function, right mouse button = configuration
1-button solution for switching all parameters between SSB operation and digital modes
storable standard texts for CW operation
easy integration of external control units
free software updates
two display modes of the S-Meter: analog or digital display
instructions and customer support in German and English
Made in Germany: The only fully digital transceiver that is completely manufactured in Germany.
SSB-electronic gmbh based in Germany produces coax cables and connectors, rf parts and components, SDR receivers and transceivers, transvertes, attenuators, coax relays, precision directional couplers.
The Chinese manufacturer Guohe Electronics, has recently introduced the Q900P portable Amateur radio transceiver for the HF, VHF & UHF bands for the Chinese market.
The price is 2680 Yuan, equivalent to 350 Euro or 380 USD
Below, an automatically english translation of the Q900 product description taken from the Guohe Electronics web site.
Q900 HF VHF UHF SDR Trasceiver
Q900P is an ultra-portable all-modes all-bands radio based on the software defined radio(SDR) technology. The frequency covers all amateur bands from 1.8MHZ-470MHz. The modem mode supports AM FM SSB CW RTTY.
Built-in Bluetooth, can be directly connected to mobile phones, computers, Bluetooth microphones.
HAM-BOX is an independently developed App for smartphone that permit remote control of the Q900 transceiver.
Q900 is an ultra-portable full-frequency full-mode SDR radio. The HAM-BOX mobile app we developed allows the mobile phone to easily control and play radio stations, it make the operation of the radio more convenient and fast, the radio adopts a full keyboard design, built-in Bluetooth module, Sound card module and communication serial module.
Full support for currently popular radio control software and logging software, We are working hard to give you more playable space.
Q900 Portable HF VHF UHF SDR
Q900 Features
Real-time spectrum.
Waterfall chart.
Doppler frequency tracking. 4, using software-defined radio technology (SDR), full-band support SSB, CW, RTTY, AM, FM.
Double frequency conversion circuit structure.
IF width and IF shift hardware and software can be modified to provide powerful IF interference suppression.
Receiver parameters Receive Architecture SDR Receive mode SSB, CW, RTTY, AM, FM Receiving frequency range 300KHZ—500MHZ * IF 20KHZ Sensitivity * SSB / CW: (BW: 2.4kHz @ 10dB S / N) 0.18uV (1.8-54MHZ), 0.25uV (144-146MHZ), 0.25uV (430-440MHZ) AM: (BW: 6kHz @ 10dB S / N) 15uV (0.3-1.8MHZ), 2uV (1.8-54MHZ), 2uV (144-146MHZ), 2uV (430-440MHZ) FM: (BW: 15kHz @ 12dB S / N) 0.5uV (28.0-29.7MHZ), 0.25uV (50-54MHZ), 0.3uV (144-500MHZ), 0.5uV (430-440MHZ) IF rejection Memory channels: 999
Image suppression Audio output power 2 watts (10% distortion rate, 8Ω load, 3KHZ) Antenna tuner parameters Tuning frequency range 1.8-54MHZ Tuning impedance range 16.7Ω--150Ω unbalanced (SWR is better than 1: 3) Tuning accuracy VSWR: 1: 1.5 or less Tuning time 2-5S (full segment 10S) Tuning method: automatic / manual Spectrum parameters Spectrum bandwidth 48K RF Spectrum FFT Structural parameters Size 170X120X45mm (excluding protrusions) Weight ＜ 1KG Working voltage parameters Voltage range 5—32V receiving range, 5-12V transmit power limit, 12-18V full power output, 18-32V transmit power limit.
Antenna interface Antenna interface TNC / BNT / M (optional)
Working environment parameters Working temperature -10 ℃ to 60 ℃ Working humidity 10% -- 90% Note *: To be calibrated, the final interpretation right belongs to the manufacturer.
For additional information about the Q900 SDR Amateur Radio Tramsceiver please visit the manufacturer’s web site.
The MSi.SDR is a wide spectrum SDR receiver by BA5SBA that is available on the market since some months now and can be purchased at 40 Euros / 50 USD from major online stores, including Aliexpress and Amazon.
The MSi.SDR can be easily used as Panadapter extracting the IF form most popular and modern amateur radio transceivers in the market.
MSI.SDR is a powerful broadband full-featured SDR receiver, covers frequencies from 10KHz to 2GHz. Just connecting a PC and an antenna, the functions of the receiver can be provided. Compatible with all SDRPlay RSP1 software. Compatible with popular SDR software platforms, you can monitor up to 10MHz of spectrum simultaneously. Enjoy all modes of operation. Small size and easy to carry. Frequency from LF long wave to HF short wave VHF UHF microwave contains all amateur radio bands.
MSi.SDR Rear
The MSI.SDR is basically a SDR Reciver clone of the most popular SDRPlay RSP1 but without AM Brodcast and FM Broadcast filters.
Main Feature:
1. Exquisite and sturdy aluminum casing 2. Frequency continuous coverage from 10kHz to 2GHz 3. 12-bit ADC chip (not the kind of RTL chip) 4. Built-in front end filter 5. Built-in TCXO (temperature-compensated crystal oscillator) 0.5ppm 6. Spectrum bandwidth of up to 10Mhz 7. Higher sensitivity and good selectivity 8. More often low background noise 9. Simple USB interface (micor jack) 10. SMA antenna connector 11. USB power supply No separate power supply 12. Compatible with all SDRPlay RSP1 software. 13. Weight :25g
Features:
MSI.SDR can receive HF short wave directly without the need of upconverter. Covers all amateur bands, aeronautical bands LF to HF, VHF, UHF It is possible to see the entire amateur band spectrum at the same time. Support mainstream SDR software, (including HDSDR, SDRConsole, SDR#, SDRuno, etc.) Available ExtIO-based plugins
MSI-SDR Dimensions
MSi-SDR Software Operations
OS Compatibility Support for multi-system platforms, including Windows, Linux, Mac, Android, Raspbian
Operation: It can receive HF short wave directly without the need of up converter. MSI.SDR covers all amateur bands, aeronautical bands LF to HF, VHF, UHF It is possible to see the entire amateur band spectrum at the same time. Support mainstream SDR software (including HDSDR, SDR Console, SDR#, SDR uno, etc.) Available ExtIO-based plugins
Xiegu G106 is a 5W portable QRP radio with SDR circuit structure using 16bit-CODEC sampling, which can provide superior performance.
The whole device is with SSB/CW/AM three modes and extra WFM (88~108MHz) reception function, allowing you to listen to local FM broadcasts while communicating. Equipped with a CW digital filter with three bandwidths, it can help you connect to more radio stations. With the external DE-19 / CE-19 digital adapter, it can be easily connected to the computer and complete FT8 communication.
As an entry-level portable SDR transceiver, G106 will be an ideal choice for you to operate CW and FT8.
Xiegu G106 Basic features
➣ High-performance SDR core circuit ➣ Compact and solid structure ➣ Transmission and reception of all amateur frequency bands within 3.8~29.7MHz ➣ WFM broadcast reception ➣ Shortwave full-range continuous reception ➣ Amateur data communication available ➣ Computer control available
Xiegu G106Specifications Receiving frequency: 0.55~30MHz 88~108MHz (WFM) Transmitting frequency: 3.5~3.9MHz 10.1~10.15MHz 18.068~18.168MHz 24.89~24.99MHz 7.0~7.2MHz 14.0~14.35MHz 21.0~21.45MHz 28.0~29.7MHz Operating mode: SSB/CW/AM, WFM (receive only) Receiving sensitivity: CW: 0.25uV @10dB S/N SSB: 0.5uV @10dB S/N AM: 10uV @10dB S/N Frequency stability: ±1.5ppm within 30min after power on @25°C: 1ppm/hour Transmitting power: ≥5W @13.8V DC Transmitting spurious suppression: ≥50dB Audio output power: 0.3W Operating voltage: 9~15V DC Standby current: 0.37A @Max Transmitting current: 2.8A @Max Dimensions: 12040135 (mm) Weight: about 720g (only host)
The Xiegu G106 5 watt QRP transceiver with a general coverage RX 0.55-30 MHz and TX in 80-10 meter amateur radio bands + RX of broadcast radio in 88-108 MHz.
Xiegu G106Price
Some european dealers are offering the Xiegu G106 ar around 375 Euros. Price are subject to change, and is referred to an average of announced prices in July 2022.
The Q900 SDR is a compact and versatile all band, all mode transceiver, designed for amateur radio use. It covers a wide range of frequencies from 160 meters to 70 centimeters, and supports multiple modes of operation such as SSB, CW, AM, FM, and digital. It has a compact design and intuitive interface.
Here we take a look at the Q900 Version 3 Ham Transceiver which covers all ham bands from 160m up to 70cm.
Q900 we introduced an ultra portable full range full mode SDR radio.
Receive frequency from 100 k to 2 GHZ, we also have developed the QRadioble phone APP that can easily control the radio.
Make the radio operation more convenient and fast, the radio adopts a full keyboard design, built-in Bluetooth module, sound card module and communication serial port module. We fully support the currently popular radio control software and logging software to give you more playable space.
What’s new in the 3rd generation：
The current Q900 is the latest product launched in late 2022 and is the third generation improved version.
Compared with the first version (HS2) and the second version (qr20), the third generation has optimized all previous problems. The current Q900 has stable performances.
Support satellite automatic Doppler tracking function (the software will be sent to you after placing an order)
Features:
1. Real-time spectrum.
2. Waterfall chart.
3. Doppler frequency tracking.
4, using software-defined radio technology (SDR), full-band support DMR(optional),SSB, CW, RTTY, AM, FM.
5. Double frequency conversion circuit structure.
6. IF width and IF shift hardware and software can be modified to provide powerful IF interference suppression.
12. USB TYPEC3.1 interface for power supply and computer connection.
13. High precision TXCO ± 0.5ppm (-10-60 ℃).
14. Ultra-wide working voltage range: 5-32VDC.
15. Power supply reverse connect protection.
16. GPS / BeiDou, electronic compass (acceleration, angle sensor) are optional. The standard kit does not include the above modules
17. GPS time service (requires optional GPS module).
18. Built-in UTC clock.
19. Voltage display.
20. Phone APP remote operation.（Support English）
Ft8cn is a FT8 software of Android system. It can connect Q900 radio station with USB cable or Bluetooth to realize FT8 connectivity. It is very simple and convenient to use without computer. When using Bluetooth, it can also effectively solve the interference of the radio station to the computer or mobile phone.
For additional information about the Q900 SDR Amateur Radio Tramsceiver please visit the manufacturer’s web site.
Direct sampling receiver based on 122.88MHz 16bit single channel ADC converter covering HF 6m and offering the possbility to exploiting the undersamplig mode covering FM Broadcasting Band and exploring part of VHF Band (135-160)MHz.
Patent pending Triple Tuning Bar for coarse and fine spectrum navigation
, Windows 
