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)
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.
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 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
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.
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.
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.
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
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.
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
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
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.
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.
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
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.
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
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.
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.
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
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.
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
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
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.
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.
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
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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 is a free utility for programming digital radios via USB programming cable. DMRConfig support several DMR transceivers by TYT, Baofeng, Anytone, BTECH, Zastone, Radtel.
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.
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.
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
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 ,
CQ WW DX CW: November 23-24 Starts 00:00:00 UTC Saturday Ends 23:59:59 UTC Sunday
The CQ WW is the largest Amateur Radio competition in the world. Over 35,000 participants take to the airwaves on the last weekend of October with the goal of making as many contacts with as many different DXCC entities and CQ Zones as possible.
GOAL: For amateurs around the world to contact as many other amateurs in as many CQ zones and countries as possible.
BANDS: Six bands only: 1.8, 3.5, 7, 14, 21 and 28 MHz. Observance of established band plans is strongly encouraged.
EXCHANGE: RST report plus CQ Zone number of the station location (e.g., 599 05).
Read all rules in several languages on official CQ World Wide DX Contest Page
TR4W (TR for Windows) is a free and open source log book program for operating in ham radio contests. Based on source code of the TR LOG MS-DOS program, kindly provided by Larry Tyree, N6TR, supports 155 contests and SO2R
LM is a program to edit contest logs afterwards, a so-called contest post processor. With help of LM you can convert row data to many different file formats. Allow a quick input interface, and contest score for several contest. Can import & export a batch of logs and to create result lists.
N1MM Logger+ is one of the most popular contest logging programs for Windows and it is the evolution of the N1MM classic. N1MM Logger plus is fully free to download and to use software featuring automatic CW generation, rotator and radio control, suport for So2R, cluster support, winkeyer interface, import export cabrillo and adif formats and many more features. Download N1MM from the official web site with latest callsign files and updated.
SkookumLogger is a free contest logging program for Mac OS X 10.7 or later, supporting CW and SSB events on the six HF contest bands plus 6m, 4m, 2m, and 70cm
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
Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with reduced sensitivity).
Details on projects by WA3TFS published in QST magazine over the past few years. Includes an online shop with several ham radio kits, circuit boards, simple SDR transceivers
The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.
An interesting page about Quad antennas. Modelling QUAD antennas, comparing quad antennas to yagi antennas. Information on QUAD Antenna tuning and home brewing with help on calculating dimensions and tuning.
Daki Funkversand is a German based web shop for Amateur- & CB-Radio equipment. Our shop includes products such as radios, antennas, equipment, PMR, LPD & Freenet.
Cubical Quad Antenna On-line Calculator helps on defining the size of each element and spreader. Simply give the resonating frequency and it will calculate size of each element.
ICChip, as an electronics-guide website, provides you with the industry professional electronic components data sheets, parameters, packaging and brand manufacturer information, as well as product-risk assessment and control, other environmental conflict mineral procurement and reporting solutions. Hope these semiconductors and electronic components data in each document can solve your problems and meet your requirements.
The DXZone is the largest human created and maintained library of web sites dedicated to Amateur Radio, currently lists 20.000+ links organized into 600+ categories and subcategories. Ham Radio operators review new sites every day since 1998, for potential inclusion in the Directory, and to evaluate the best place to list them