Full sound card management (CM108) with USB-C for access to a computer or raspberry running the AllStarLink3 program on linux. From the device's aspects one can easily appreciate the flexibility of connections and the variety of settings. The sound effect created is exactly what is required for proper communication. Its use is not necessarily exclusive to AllStarLink, but also anywhere else where acoustic information is required for an amateur radio program running on a computer. More technical information and features will be available later.

When you visit our website, our own web server automatically records the name of your Internet service provider, your IP address, the web page from which you came to our website, the current web pages you visit on our website, and the date and the duration of your visit. Our website logs may be used for the purpose of technically managing and protecting the availability, integrity and security of our website. Your visit to our website does not involve us processing your name or contact details, unless you choose to submit this type of information to us, for example through the contact form or the registration form for access to the communication rooms with RF. For information, useful suggestions, requests or complaints regarding the processing of your personal data or the use of our cookies, please contact us through the contact details. Cookies are small text files that can be stored or accessed by the web browser software of your Internet-enabled device (such as a computer, smartphone or tablet). Hellas-Node.net may use cookies and similar technologies to store the preferences of our visitors and optimize our website accordingly. For the sake of simplicity, similar technologies such as trackers, pixels, web bugs and others are also referred to as cookies. If you do not consent to the use of cookies, you can set your web browser so that it does not store cookies. Please note that some areas on most websites may not work properly if you generally reject all cookies. You can also use your browser settings to send a “do not track,” request along with your browsing data. Please note that our website is not currently configured to accommodate do not track requests, which your browser may send. By choosing to continue browsing our website from our home page, you consent to our website’s use of cookies. The information available on our website constitutes selfless offer of Amateur Radio service and is not a substitute for personal advice. Despite the careful acquisition and disposal of information, we do not assume any responsibility and do not guarantee the correctness, completeness and timeliness of the information listed on our website, whether it is information from third parties on the Internet, or from personal experience in theory or in practice of our members. Any liability claims against Hellas-Node.net regarding material or moral damages caused by the use or non-use of the available information, or respectively by the use of inaccurate or incomplete information, if on the part of Hellas-Node.net, are excluded. Net there is no evidence of intent or gross negligence. Also, Hellas-Node.net is not responsible for any kind of damages that could arise from the access or use of this website, since its design is based on international corporate website design standards with assistance and support for its correct operation, in combination with the online security barriers to access provided by the specific professional website design company. In the event that parts or individual wording of this text are not, or are no longer, or are not fully legally correct according to the applicable legislation, the remaining parts thereof remain intact in terms of their content and validity. Hellas-Node.net expressly reserves the right to change, supplement, delete or disable temporarily or permanently, parts or the whole of its website, without particular notice.

Follow the procedures as described in the videos for each individual subject or program. Watch out for typographical errors. These are the main reason something goes wrong with the installation. Pay attention to detail. You do not move forward unless you achieve the individual result shown in the video. Don't question the instructions. All procedures have already been followed and normally produce the result described in the videos. Patience and good luck.

The original System Manager has been completely inactive since January 2024. There is no information on its coming back.

Free projects are only for private use and not for commercial use. U-Ham Group have all the rights on all these free projects and could make changes at any time without any prior notice, so be updated frequently. User can use the projects at his own risk. Temperature dependent fan speed controller Schematic Features fan controller Adjustable start point Voltage operating range: 9v-15v Maximum temperature sensor cable length 1 meter LED indicator light for fan operation -------------------------------------------------- ------- It concerns a simple circuit to control the speed of a cooling fan based on the temperature measured by a temperature sensor (thermistor) placed at a suitable point on the P/D to "read" as closely as possible the output temperature of the machine. It is of course recommended to use a quality thermal paste for more reliable results. The whole circuit is designed on the property of the thermistor to change its internal resistance depending on the temperature change in its body. This one is of negative temperature coefficient -Negative Temperature Coefficient or otherwise NTC, which reduces its resistance as the temperature rises. This causes the mosfet Q1 to trig proportionally to its gate and by extension to affect the voltage of the fan and make it increase revolutions proportionally. There is a voltage threshold above which the fan starts to spin and in which the setting of VR1 plays a decisive role which creates a voltage divider and beyond that the revolutions depend proportionally on the temperature affecting the thermistor. The reverse also applies in case of a decrease in temperature. How to adjust the temperature sensor. Locate the VR1 regulator. Connect the voltage 13.8VDC and the fan as in the photo. Press the sensor with two fingers and with a screwdriver adjust VR1 until the fan is ready to start and the LED just starts to light up. Normally, this setting causes the fan to start slowly as the temperature reaches about 36°C and then increase the fan speed as the temperature rises. The opposite happens when the temperature drops and below 36°C the fan slows down until the falling voltage level cannot keep it spinning. Turn VR1 until the fan is at such a speed that it keeps the temperature at the level you want and if you want to change it from the set 36°C. Place the fan far enough away from the P/W heatsink that it will be effective, but not so close that it touches, as the reflected airflow comes back through the fan body and cancels the flow itself. Linkage (Applies to off-the-shelf device) Watch out for any mistakes especially in the position and polarity of the 13.8VDC wiring. The subpoenas can be seen in the photo. PCB The board was designed to match the specific plastic box

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Click on the image to see the dashboard The full form of NXDN is Narrowband Digital Exchange. It is defined by two main organizations viz. Icom Incorporated and Kenwood Corporation. It operates in VHF/UHF frequency bands and uses FDMA technology. Following are the specifications of NXDN. • NXDN offers clear voice quality with minimal background noise and interference. • NXDN offers secure communication through its digital encryption capabilities. • NXDN operates on either a 12.5 kHz channel or a 6.25 kHz channel bandwidth. It allows single carrier on one channel at a time. • NXDN supports multi-site trunking which enables seamless communication over a wide area by interconnecting multiple base stations. • NXDN supports data applications such as text messaging, telemetry, status monitoring and GPS location tracking. • NXDN offers better coverage and extends range compared to analog radio systems. • Some NXDN systems support roaming capabilities. • Many NXDN radios support both digital and analog modes which facilitates a smooth transition from analog to digital systems.

Hellas-Node Network. Διαχείριση ραδιοερασιτεχνικών ψηφιακών και αναλογικών δικτύων. This website refers to digital and analog networks of amateur radio applications and is in the process of continuous updating and upgrading, after being renamed to hellas-node.net. The hellas-frn network and all its pre-existing structure is included in this website as one of the supported analog communication systems, with revised management of communication rooms and in other analog networks. Recent Visits

Alternative way to connect to ECHOLINK from Computer, but also from android, without app installation. The echolink badge and code are required to enter. The above is an example of a connection. The yellow frame color is for standby, green when receiving and red when you press the Transmit button. Reliable and convenient program.

ALL STAR LINK worldwide users The AllStarLink network availability is over 99,99% . Over the past four years, AllStarLink has seen phenomenal growth. Four years ago, around 2,000 nodes were connecting to our servers at the same time. Now we are seeing over 10.000 nodes. With a generous grant from ARDC, last year we released ASL 3. It is the first new client in 15 years for AllStarLink. ASL 3 has been re-engineered to run on Asterisk 22 LTS with the latest Debian 12 Linux release and modern hardware. This is a major update for current customers running Asterisk Version 1.4. The new release incorporates over 15 years of Asterisk bug fixes, significant security improvements and enhancements. The update required extensive modification of "app_rpt", the Asterisk application that is Allstar. Many memory leaks have been addressed, modules now load or refresh more reliably, and many bugs have been fixed. All of this contributes to improved stability and uptime. We recommend that all AllStarLink users upgrade their devices, PCs, and Raspberry Pis to use the latest version of ASL 3. Over 3,700 nodes have already been upgraded and are currently using ASL 3. This includes nodes using Raspberry Pi 3, 4, or 5 (many of which were running Hamvoip), x86_64/AMD computers, and cloud nodes, Kits4Hams SHARI boxes, Node-Ventures ClearNodes, Repeater Builder, and Hotspot Radios. To learn more, read the ASL3 Handbook or join the AllStarLink Community. If you are using a hotspot device, we recommend that you contact the hardware manufacturer for specific upgrade instructions. Use the link below for a live view of Allstar Link connections Worldwide. The greatest concentration is observed in the USA (mainly) and England. The rest of the countries are slowly following this global way of communication that does not eliminate either the existing analog P/D and analog communication, nor the digital one, due to the interconnection capability. With the help of this suitable but not difficult connections, everything is now possible. https://stats.allstarlink.org/maps/allstarUSAMap.html AllStarLink is a network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via Voice over Internet Protocol. AllStarLink runs on a dedicated computer (including the Rasperry Pi) that you host at your home, radio site or computer center. It is based on the open source Asterisk PBX running our app_rpt application. App_rpt makes Asterisk a powerful system capable of controlling one or more radios. It provides linking of these radio "nodes" to other systems of similar construction anywhere in the world via VoIP. AllStarLink's primary use is as a dedicated computer node wired to your repeater or radio. Connections from Echolink, other VoIP clients and telephone calls are supported.

Click on the image to proceed Click on the image to proceed DVSwitch is a Client-Server application for Amateur Radio Digital Voice. This provides a "Server" application running on a Raspberry Pi (RPi) or other Linux platform. It can also be installed on a cloud server with Linux. The server application is distributed as an RPi image with all features and functions installed. Therefore, there is no need to download additional modules or programs or install them yourself on a Raspberry Pi. There are two clients available for DVSwitch. One is Android and it is available in the Google App Store to display almost any type of Android device. In addition to this there is also the python USRP Client (pyUC) which is available for use on Windows, Linux or Mac. DVSwitch supports all current Digital Voice functions without any additional hardware, except for D-Star. For the D-Star, an external vocoder circuit is used, such as the Northwest Digital ThumbDV dongle. For other functions, the Vocoder software included with DVSwitch provides high-quality sound, and while DVSwitch has been around for a long time, it was somewhat complicated to set up and mostly used by deep computer geeks. But with this version, an average radio amateur can get it up and running in less than 10 minutes. This release provides many new features, including the ability to change functions dynamically, customize Talk Groups, rooms and repeaters, either from the server or the client, and dynamically switch between DMR networks such as Brandmeister, TGIF, QRM etc.