Red Pitaya STEMlab 122.88-16 SDR Kit Basic

DXZone
-
0
Red Pitaya STEMlab 122.88-16 SDR Kit Basic

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.

RedPitaja STEM Lab 122-16 SDR Kit

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
  • Hardware compatible with HPSDR
  • Improved distortions, dynamic range, sensitivity, noise & crosstalk

STEMlab 122.88-16 Specifications

  • BASIC
    • Processor Dual Core Arm Cortex A9
    • FPGA Xilinx Zynq 7020 SoC
    • RAM 512MB (4GB)

  • CONNECTIVITY
    • Ethernet 1Gbit
    • USB USB 2.0
    • WIFI: require Wi-Fi dongle
    • Synchronization With daisy chain connectors

  • RF INPUTS
    • Channels 2
    • Sample rate 122.88MS/s
    • ADC resolution 16-bit
    • Full-scale voltage range 0.5Vpp /-2dBm
    • Absolute Max. Input voltage range DC max 50V (AC-coupled), 1Vpp for RF
    • Input protection RF transformer & AC-coupled
    • Overload protection DC voltage protection
  • RF OUTPUTS
    • Channels 2
    • Sample rate 122.88 MS/s
    • DAC resolution 14 bit
    • DAC SFDR @ 10Mhz: 86 dBc
    • DAC SFDR @ 30Mhz: 67 dBc
    • Voltage range 1Vpp / +4dBm
    • Load Impedance 50ohm
    • Output slew rate N/A
    • Short circuit protection Yes

  • EXTENSION CONNECTOR
    • Digital lOs 16
    • Analog inputs 4
    • Analog inputs voltage range 7V
    • Sample rate 100kS/s
    • Resolution 12-bit
    • Analog outputs 4
    • Analog outputs voltage range 0-1, 8V
    • Communication interfaces I2C, UART, SPI
    • Available voltages +5V, + 3,3V, -4V

STEMlab 122.88-16 SDR kit basic Price is around 550 Euros

Red Pitaya
Red Pitaya
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.

Top Amateur Radio Websites – Issue 1939

DXZone
-
0
Top Amateur Radio Websites – Issue 1939

Micro24 Cigarette Pack SSB QRP Transceiver for 20m
DK7IH
The Micro24 is a ultra compact microsize QRP SSB transceiver for the 20 meters amateur radio band. This transceiver is so small that it fits into one hand.
Moxon Antenna for 7 MHz
TA7OM
Homemade moxon antenna for the 40 meter band. This article is not very descriptive but includes some very detailed images
9 Circle RX antenna
PI4CC
The receiving antenna setup for the top band, made with a 9 elements vertical antenna array, remote controller and remote relais.
A Moxon Antenna for Satellites
vk7ben
How to make a dual-band VHF/UHF handheld Moxon Antenna to work satellites
Top Band Receive Loop Antenna
TA7OM
In this article the author shows the receiving loop antenna for 160 meters band installed at his QTH. Diagram and movie available. Article in in Turkish but can be translated in english
A Cheap Portable Mast Support
WB3GCK
A homemade simple and inexpensive portable antenna support, handy for quick trips to the field and other portable operations
NanoVNA
NanoVNA
The NanoVNA is a very compact handheld Vector Network Analyzer. The NanoVNA is tiny and portable analyzer, and it offers a high performance capabilities with an embedded lcd display.
Homebrew a High Performance SSB RTX for 14 MHz
DK7IH
This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.
NanoVNA Saver
NanoVNA
This software connects to a NanoVNA and extracts the data for display on a computer, and for saving to Touchstone files.
The Micro20 III Pocket Size SSB RTX for 20m
DK7IH
DK7IH QRP transceiver for 14 MHz. This small and compact home made transceiver with a max power output of 5W, the VFO module is based on the clock oscillator chip Si5351A by Silicon Labs ATmega168 and OLED 1306

Top Amateur Radio Websites – Issue 1938

DXZone
-
0
Top Amateur Radio Websites – Issue 1938

Homebrew 5/8 Wave HF Vertical Antennas
PA3HCM
The advantage of 5/8 wave antenna is that it has the lowest angle of radiation and has about 1dB more gain when compared to 1/4 and 1/2 verticals. So the 5/8 should be the favourite choice for DX.
Indoor QRP HF Loop Antenna
DL4YHF
A home made magnetic loop for HF Bands. This small and compact loop is designed to support small power transmissions on HF bands, from 7 MHz to 21 MHz
9A5N Solid State CW Paddles
9A5N
21st Century telegraphy paddles, software defined telegraphy paddles by 9A5N. Following global trends in the application of the latest technology, HAM 9a5n has made a significant technological breakthrough in the field of CW paddles
A Elecraft KX2 to Yaesu FT-818 Comparison
W2LJ
A comparison of Elecraft KX2 and Yaesu FT-818
TX7T Log Online
TX7T
Online log for TX7T DX pedition from Marquesas
The UHF Bicycle Antenna
PA3HCM
Homebrewing a UHF antenna to be used on a bicycle. This simple project gives you the right hints on how to build and setup and install a 70cm antenna on a bicycle.
The BikeLoop Antenna for VLF
IW2FER IW2DWN
BIKELOOP is a VLF home made antenna. This antenna is a double magnetic loop composed by two orthogonal loops. This document describe how the prototype was built, the purpose is to give some construction hints to people who wants to try this kind of antenna. Mathematical and electrical details are described as well
SWR and Amateur Radio Antenna Tuners
wa2ooo
Undestanding and measuring SWR, Standing Wave Ratio in antenna feed lines. This article also introduce basic concepts and usage guidelines of amateur radio antenna tuners
TX7T Marquesas Islands DX Pedition
TX7T
TX Marquesas 2019 Nov 6 – 2019 Nov 19, 60-10m; CW SSB FT8 QSL via LoTW official web site
PJ5 St. Eustatius DXpedition by SP6IXF and SP6EQZ
SP6IXF SP6EQZ
All HF Bands CW/SSB/DIGI CQ WW CW anb Online log St. Eustatius DXpedition

NanoVNA Compact Vector Network Analyzer for $50

DXZone
-
0
NanoVNA Compact Vector Network Analyzer for $50

The NanoVNA is a very compact and portable vector network analyzer (VNA) capable to work from 50KHz to 900MHz. The NanoVNA is a self-contained device with an embedded touch screen, powered with a rechargeable battery.

The VNA can be also remotely managed with a dedicated software, connecting the NANOVNA via the embedded USB port.


This test equipment was born as a project to provide an RF gadgets for enthusiasts, but it is also a very useful tool.

Features:
2.8 inch TFT LCD touch screen display.
Built-in lithium battery power supply, more convenient to use.
The measurement frequency range is 50KHz~300MHz (can be extended to 50KHz~900MHz, enabling advanced firmware).
Basic operation: Set frequency range, select calibration, display format and channel, save.
You can change the display format and channel selection at any time.
In normal test mode, tap the right part of the screen or press the Rotary encoder to enter the menu.
Tap the screen or turn the dial to select a menu item.
Portable and compact, easy to use and transport.

NANO VNA Specifications:
Main material: PCB
Colour: white
Display: 2.8 inch TFT (320*240)
Measurement frequency: 50KHz~300MHz (50KHz~900MHz, enable advanced firmware)
HF output: -13dbm (maximum -9dbm)
Measuring range: 70dB (50KHz~300MHz), 40dB (300M-900MHz, enable extended firmware)
Port SWR: 1.1
USB interface: USB type C Communication mde: CDC (serial)
Power: USB 5V 120mA 120mA 120mA
Battery: 1 * built-in lithium battery, 400mAh (included)
Number of scanning points: 101 (fixed)
Display Tracking: 4, Marker: 4, Save setting: 5
Printed circuit board size: 68 * 50 * 10mm / 2.7 * 2.0 * 0.4in (without plug, lever switch)

Package list:
1 * NanoVNA Host
2 * 30mm SMA plug to plug RG174 RF cable
1 * SMA socket – socket – socket – socket – socket – socket – plug
1 * USB cable (Type-C)
1 * SMA Simple calibration kit (short / open / load)

NanoVNA Resources

NanoVNA-H 900 MHz Upgrade
hugen79
NanoVNA based on edy555, use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. GitHub repository.
NanoVNA GitHub Repository
edy555
Very Tiny Palmtop Vector Network Analyzer by edy555. This is the original GitHub firmware repository implementing the standard 50KHz to 300MHz model
NanoVNA Saver
NanoVNA
This software connects to a NanoVNA and extracts the data for display on a computer, and for saving to Touchstone files.
NanoVNA
NanoVNA
The NanoVNA is a very compact handheld Vector Network Analyzer. The NanoVNA is tiny and portable analyzer, and it offers a high performance capabilities with an embedded lcd display.

Top Amateur Radio Websites – Issue 1937

DXZone
-
0
Top Amateur Radio Websites – Issue 1937

Using a Baofeng handheld to work Satellites
KM6NHH
How to program Baofeng handheld transceiver with satellite frequencies, and how to get alerts when satellites are visible by using a smartphone app. A beginners guide to work satellites with a common VHF handheld radio.
A Compact 600W Broadband HF Power Amplifier
M0HZH
A 600W 1.8 MHz to 54 MHz power linear amplifier made using rugged MRF300 transistors featuring output power between 580W and 750W depending on band, power supply: 48V, 18A typical, 20A max
Antenna Tuner Basics - In search of the perfect antenna
Chris Warren
An article that explain with simple concepts and basic theory the correct usage of antenna tuners. It covers some aspects of common questions newcomers have on what antenna tuners are for, and what antenna tuners will never do.
Setting up Raspberry Pi for Ham Radio
DL1GKK
An interesting guide to installing software on a Raspberry for amateur radio use. This documentation cover the Raspberry Pi 4 version that whose hadware is powerfull enought to fullfill all requiriements for ham radio programs.
Linux and Amateur Radio - Presentation
KD7GR
A PDF presentation about Amateur Radio and Linux by By: Dave Mamanakis. A beginners guide to Linux for radio amateurs, this presentation cover basic concepts of the open source operative system, from the basic installation to the setup of ham radio programs.
Build A Single-Sideband Transceiver From Scratch
Gregory L. Charvat
How to build a complete Single-Sideband amateur radio transceiver from scratch. Article published on hackaday dot com includes an introduction to radio architectures, ssb receivers and tramsitter
PolEx Technologies
PolEx Technologies
Makers of the The Polar Explorer transmitter, which operates on 9 HF bands from 160 through 10 meters and is capable of 500 watt peak output power on SSB, CW, AM, FM and RTTY. It is intended to be used in conjunction with a transceiver.
QRP Portable Station Winter Configuration
OH8STN
An article describing equipment needed to make portable operations evenin winter cold times. The article is completed by a nice video describing not only the radio setup but even the tent and power supply equipment
Using AM Broadcast Stations as 160m Beacons
w0btu
AM Broadcast Stations for possible use as 160 Meter Propagation Beacons. When longwave European broadcast stations can be heard, 160 meters may be open to Europe
W8S Swains DX Pedition 2020
W8S Official web site of the Swains Island March 2020. Information about the Team, plans, frequencies and info on the Swains island

Anytone AT-D578UV Plus Dual Band DMR Mobile Transceiver

DXZone
-
0
Anytone AT-D578UV Plus Dual Band DMR Mobile Transceiver

The AnyTone AT-D578UV-Plus is a two-band radio for digital DMR radio systems, compatible with MOTOTRBO Tier 1 and 2.

Traditional FM mode is also supported. Unlike many other DMR radios, the AT-D578UV has a true VFO, which makes it operationally much closer to the amateur radio style: you can vary the frequency and all other parameters as in a traditional radio instead of using only pre-programmed memories. Of course there are also memories on the AT-D578UV: 4000! Another difference compared to other DMR radios is the possibility to modify most (unfortunately not all) of the transceiver parameters, without having to connect to a computer for every slight modification you want to make. To really access and change all the settings, however, you need to rely on the CPS programming software and a PC.

In addition to the well-known functions such as FM APRS, digital roaming and the new Bluetooth option, the AT-D578UV-Plus now offers the possibility of receiving both a DMR and an analogue channel at the same time. Of course, two analogue channels can also be received simultaneously: each of the two bands has its own volume control and VFO. The transmission power can be set to four levels: the maximum power is 50 watts in VHF and 45 watts in UHF.

AT-d578uv Picture

The AT-D578UV also offers a wide range of functions: up to 4000 different channels can be stored (digital, analogue or mixed); 10000 conversation groups can be configured and the memory can hold up to 200000 digital contacts (the complete DMR user database from around the world can be stored in the device). In analogue mode, functions such as DTMF, CTCSS and DCS as well as two-tone and five-tone signal encoding are supported. Ten buttons on the radio and microphone can be assigned to individual functions, allowing the user to set their personal preferences.

The brightness of the 1.77″ colour display and the backlit keys on the unit and microphone can be adjusted in steps, ensuring ideal readability even in sunlight and glare-free operation when driving in the dark. The AT-D578UV’s roaming function is independent of the device’s location: while roaming, the system checks whether a repeater is reachable from a predefined list and automatically sets it up if necessary. Roaming channels can be divided into zones, as can conventional channels, such as geographical regions.

The AnyTone AT-D578UV is equipped with a GPS receiver and position data can be transmitted via radio (DMR-APRS and FM-APRS). The device also has a connector for an external GPS antenna. A WFM receiver for the FM radio band is also available. The antenna connection is made with a PL connector. The programming cable (USB / Micro-USB) is included in the package.

AnyTone

AT-D578UV Features

  • 1.77 inch colour LC display
  • Numbers keyboard on microphone, 10 freely configurable keys
  • TWINband 2m/70cm (V/U, V/V, U/U)
  • IF channel width selectable 12.5/25 kHz (analog) or fixed 12.5 kHz (DMR)
  • Digital: DMR (Tier I/II) and analog FM
  • WFM receiver 87.5 – 108 MHz
  • Up to five DMR IDs programmable
  • 4000 memories, 10000 Talk groups, 200000 digital contacts
  • 250 Zones (memory banks) programmable
  • Display of ID (Callsign), location and country of QSO partner
  • Two timeslots available, all colour codes available
  • Transmit power 5, 10, 25, 45 (UHF) / 50 (VHF) Watt
  • Automatic mode selection Analog/Digital
  • Tone burst 1750 Hz
  • Tone squelch: CTCSS, DCS
  • Tone signalling: DTMF, 2 tone, 5 tone
  • GPS receiver
  • New simultaneous reception analog/digital or analog/analog
  • New Many APRS parameters settable on radio, without computer
  • Recording and playback of received signal (DMR only)
  • New Roaming (selection of reachable repeater from a pre-programmed list)
  • VOX function
  • New Bluetooth interface
  • Individual volume controls per VFO

AT-D578UV Comes with:

  • Anytone AT-D578UV
  • Bluetooth module built in
  • External Bluetooth PTT key
  • Handheld microphone with number keyboard and up/down keys
  • Mobil mounting bracket and assorted hardware
  • DC cable with fuse
  • USB programming cable
  • Spare fuses
  • English manual

AT-D578 Price

Currently the AT-D578 is available for aproximately 400 USD or 430 Euros from main amateur radio dealers

Top Amateur Radio Websites – Issue 1936

DXZone
-
0
Top Amateur Radio Websites – Issue 1936

Linux and Amateur Radio - Presentation
KD7GR
A PDF presentation about Amateur Radio and Linux by By: Dave Mamanakis. A beginners guide to Linux for radio amateurs, this presentation cover basic concepts of the open source operative system, from the basic installation to the setup of ham radio programs.
Build A Single-Sideband Transceiver From Scratch
Gregory L. Charvat
How to build a complete Single-Sideband amateur radio transceiver from scratch. Article published on hackaday dot com includes an introduction to radio architectures, ssb receivers and tramsitter
Hermes-Lite Low Cost HF SDR
Hermes-Lite
The Hermes-Lite is a low-cost direct down/up conversion software defined amateur radio HF transceiver based on a broadband modem chip and the Hermes SDR project. It is entirely open source and open hardware, including the tools used for design and fabrication files. Over 300 Hermes-Lite 2.0 units have been successfully built.
PolEx Technologies
PolEx Technologies
Makers of the The Polar Explorer transmitter, which operates on 9 HF bands from 160 through 10 meters and is capable of 500 watt peak output power on SSB, CW, AM, FM and RTTY. It is intended to be used in conjunction with a transceiver.
Using AM Broadcast Stations as 160m Beacons
w0btu
AM Broadcast Stations for possible use as 160 Meter Propagation Beacons. When longwave European broadcast stations can be heard, 160 meters may be open to Europe
Optimizing Ground Radials in End-Fed Antennas
w0btu
An interesting article focused on defining the optimal lenght and number of ground radials in vertical, inverted-L, end-fed antennas. This article compares also the radial length vs number of ground radials to power loss in transmitted power.
Icom IC7300 Modifications by M0FOX
M0FOX
Icom IC 7300 noisy Fan replacements with a whisper quiet Noctua NF-A8 / PWM and installing and configuring WSJT-X with IC 7300 correctly
Wi-Fi Rotor Controller
AF6SA
A remote rotor controller, you can use to connect your laptop tablet or smartphone directly to the rotor using it as a Acces point or alternatively it can be connected to existing Wi-Fi network
Advanced Antenna Modeling Book by ON5AU
Marcel De Canck ON5AU
A new book about modeling antennas with EZNEC and in particular in conjunction with the AutoEZ application for a total of 584 pages. The book include more than 3000 accompanied downloadable EZNEC model files

Top Amateur Radio Websites – Issue 1935

DXZone
-
0
Top Amateur Radio Websites – Issue 1935

Speaker Wire Doublet Antenna
Speaker Wire Doublet Antenna
K4IZ
A portable wire antenna for the HF bands, made with a common speaker wire. In its natural form, the speaker wire acts as parallel feed line coming up to the bottom of the PVC feed point. From there, it’s split into two wires, one heading out each side of the PVC tee.
160m portable vertical antenna
160m portable vertical antenna
VK3YE
The Shoddytenna is a 160 meters band vertical antenna intended for portable use. This antenna takes just 15 minutes to erect on site, can be carried by hand and is ideal for local groundwave work.
RV marine battery as power source
RV marine battery as power source
W1MST
Turning an RV marine battery into a massive 12-volt emergency power source
Decoding Numbers Stations - QST Article
Decoding Numbers Stations – QST Article
Allison McLellan
Exploring these mysterious transmissions and how their strong following has created a niche in the community. Free article in PDF Format from QST November 2019
CW Trainer - Arduino Project
CW Trainer – Arduino Project
N4TL
Hone your Morse code skills with this entry-level project. Article includes the full schematic of the CW Trainer, describes the sketch and how to operate the morse code trainer.
Space weather impacts on Climate
Space weather impacts on Climate
NOAA
About impacts of solar weather changes, including effects of the solar cycle on weather on the Earth. The most important impact the Sun has on Earth is from the brightness or irradiance of the Sun itself.
Guide to DMR Code Plugs
Guide to DMR Code Plugs
Miklor
Basic information on code plugs. What code plugs is, how to set up a code plug, transmit talk groups and configuring zones.
Seiuchy On-line morse code trainer
Seiuchy On-line morse code trainer
hb9fxw
Seiuchy is a web based morse code trainer that can be used even offline once the page is loaded. Trainer can be configured to send call signs only or just part of a standard QSO, and a full QSO too. Answers are then compared and displayed and a score get calculated.
World Wide Radio Operators Foundation
World Wide Radio Operators Foundation
WWROF
Dedicated to improving the skills of amateur radio operators around the world, utilizing education, competition, advancement of technology and scientific research, promoting international friendship and goodwill, and preparing them to better serve society in times of communication need.
JTAlert
JTAlert
VK3AMA
JTAlert provides several audio and Visual alerts for WSJT-X & JTDX software. JTAlert generate audio and visual alerts for several alert conditions, logs automatically to several ham radio log books software like hrd dxkeeper,log4om, interoperates with web services and it supports dxlab suite.

WSJT-X version 2.1.2 released

DXZone
-
0
WSJT-X version 2.1.2 released

The WSJT Development Group recently announced the release of WSJT-X Version 2.1.2.

WSJT-X 2.1.2 is a bug fix only release that solve some issues reported on previous versions

WSJT-X 2.1.2 is a bug fix only release which fixes a major regression
in the Hamlib package bundled with WSJT-X v2.1.1.

 
		   Release: WSJT-X 2.1.1
		     November 25, 2019
		   ---------------------
		   
WSJT-X 2.1.1 is a bug fix only release addressing regressions in the
prior v2.1.0 release.

 - Document rules for the UDP message protocol.
 - Fix bug that could cause display of a blank Settings window.
 - Fix message parsing to properly handle 4-character directed CQs
 - Fix a potential crash in the interface to Omni-Rig.
 - Improve handling of unexpected rig off line status changes from
   Omni-Rig.
 - Add an option to highlight unworked 2-character grid fields rather
   than 4-character grid squares.
 - Fix bug that caused unwanted disabling of "Enable Tx" in Fox mode.
 - Log duplicate contacts in FT8 DXpedition Fox mode.
 - Regenerate the GFSK Tx waveform if Tx audio frequency is changed.
 - Fix the behavior of double-clicking on a decoded message with first
   callsign displayed as an unresolved hash code <...>.
 - Fix a problem with determining "worked before" status after a band
   change.
 - Updates to the WSJT-X 2.1 User Guide.
 - Fix a production issue with the macOS tool chain that generated
   broken executables.

 

A more detailed list of program changes since WSJT-X 2.0.1 can be found in the cumulative Release Notes: http://physics.princeton.edu/pulsar/k1jt/Release_Notes.txt

Upgrading from earlier versions of WSJT-X should be seamless. There is no need to uninstall a previous version or move any files.

Links to installation packages for Windows, Linux, and Macintosh are available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/

WSJT-X is licensed under the terms of Version 3 of the GNU General Public License (GPL). Development of this software is a cooperative project to which many amateur radio operators have contributed. If you use our code, please have the courtesy to let us know about it. If you find bugs or make improvements to the code, please report them to us in
a timely fashion.

 

DOWNLOAD WSJT-X 2.1.2

Top Amateur Radio Websites – Issue 1934

DXZone
-
0
Top Amateur Radio Websites – Issue 1934

Amateur Radio - State of the Hobby - Survery
N8RMA
Annual poll for radio amateurs – the good, the bad, the ugly! This is an annual survey conducted among the online community, and it represents the status of amateur radio. The authors ask to hams several questions, from the most used operating modes, to the typical ham radio lifestyle habits.
DL7AHW Spraycan EH Antennas
DL7AHW
Hairspray-can EH Antennas for shortwave and online programs. Small magnetic (H) antennas (Loops) have a good efficiency for the upper bands (20/15/10 meter band) and also in contrast to E-antenna a defined radiation direction.
SDR Receiver using a Tube
HackADay
The build was an experiment to see if a tube receiver could be stable enough to receive digital shortwave radio broadcasts. The tube acts as both an oscillator and mixer, so the receiver is a type of direct conversion receiver.
KX3 GoBox 2012
oe2atn
This KX3 go-box weights 1,6 kg including the components and the KX3 with its ATU and filter-option installed (no internal batteries) and a light-weight headset
dmrconfig - DMR Radio Programming Utility
KK6ABQ
DMRconfig is a free utility for programming digital radios via USB programming cable. DMRConfig support several DMR transceivers by TYT, Baofeng, Anytone, BTECH, Zastone, Radtel.
WSQCall A Weak Signal QSO mode for LF/MF
zl1bpu
Amateur Radio enthusiasts who are interested in the LF and MF bands may be familiar with WSPR and WSJT JT9. Used as a propagation probe or beacon, WSPR allows very weak signals to be detected, frequently as weak as -27dB SNR.
MorseTeacher MorseMachine On-Line
Ward Cunningham
Learn morse code with this online version of the popular morse machine. This version is currently working on Chrome browser only. This program teaches you to receive Morse code. It starts with a few letters and adds more when it sees that you are ready.
CW QSO Trainer
scphillips
This online web application allows you to train the decoding of Morse code by copying random QSO sentences that can be looped or even mixed.
UHF Radio Chat with your Raspberry Pi
MagPi
Send and receive wireless messages adding a small 433MHz radio to your Raspberry Pi, without the need of a WiFi connection and operate remote-control main sockets
FSQCall Fast Simple QSO
zl1bpu
FSQ is a Fast Simple QSO mode designed specifically for HF. It works well under NVIS and sunrise/sunset conditions on the lower bands, and also works well for short skip and grey-line on higher bands and can be used also on VHF FM.

Amateur Radio – State of the Hobby – Survery, DL7AHW Spraycan EH Antennas, SDR Receiver using a Tube, KX3 GoBox 2012, dmrconfig – DMR Radio Programming Utility, WSQCall A Weak Signal QSO mode for LF/MF, MorseTeacher MorseMachine On-Line, CW QSO Trainer, UHF Radio Chat with your Raspberry Pi, FSQCall Fast Simple QSO ,

1...303132...83Page 31 of 83