Various ways for additional Allstarlink functions with announcement of the time, the weather in your area (or even just the temperature). For countries outside the US, use weather information from the official and closest airports in your area. Please note: If you ignore the above instruction and enter your local ZIP Code, you may see an indication in the program but know that it is the weather of the corresponding ZIP Code in America. It is not the weather of your area. You can check this by comparing the indications you see and finding the area in America that corresponds to the same ZIP Code as yours. Watch all the videos below and choose the most convenient process for you.

Construction derived from the ready-made μ-Interaspi version, only here the specifics for Allstalink Gateway operation have been integrated. A switch is located on the back of the device for operation as ASL Gateway or DEFAULT Gateway. The choice changes a lot in its internal mode of operation, but in both cases it uses the built-in raspberry instead of a separate PC to run the program. The Allstalink program with everything else you can integrate as described in videos elsewhere on this site, utilizes the capabilities of a radio gateway with a simple transceiver and links this wireless communication with the other side with a digital network. It goes without saying that Allstalink mediates this through bridging with echolink and DVSwitch. It goes without saying that even if the transceiver does not work, connected or not, the rest operates as an AllStaLink Node in the global network with whatever interfaces you will have to other analog or digital networks. Simply, the transceiver passes all this activity over the air for analog communication and via RF. The following project is in the process of being formatted as a device and not as a construction, i.e. whether or not it works with bare boards in the air and cables everywhere. The circuits have already been tested, they performed correctly and now it's time for the aesthetic side of the effort. The built-in raspberry can also be what someone already has and simply be placed in the specific position with the remaining internal connections on the pins according to the instructions. In short, the raspberry is placed inside with the program already installed on its SD card and then the power supply, SQL (COS) and PTT are connected with ready-made standbys. In order not to lose the monitor capability, there is also an HDMI output for monitoring and programming. The rest is left to the user's imagination as to what more he can do with it. It is NOT for a hotspot with room range. It is for a normal long-range gateway (as far as the RF of a mobile FM transceiver goes) and incorporates all these protections for RF, galvanic isolation, etc.). More information with the progress of the device formatting and accordingly with the interest that will arise (if any) from some.

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Εδώ το ενεργοποιημένο echolink θα συνεργαστεί με το δικό σας Allstalink Node και θα ανταλλάσσουν πληροφορίες ως γέφυρα. Από Echolink προς το node σας και το αντίστροφο. Χρειάζεται μόνο να δώσετε εντολή DTMF μέσω του Supermon. *33 και αριθμός του node για σύνδεση *13 και αριθμός του node για αποσύνδεση (Αναφέρονται όλα αυτά στο βίντεο. Πάρτε το με τη σειρά και θα σας βγει εύκολα.)

Digital Mobile Radio (DMR) is a digital radio standard for voice and data transmission over non-public radio networks. It was created by the European Telecommunications Standards Institute (ETSI) and is designed to be low-cost and easy to use. DMR, along with P25 Phase II and NXDN are the main competing technologies to achieve 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 voice codec. DMR and P25 II both use two-slot TDMA on a 12.5 kHz channel , while NXDN uses discrete 6.25 kHz channels using frequency division and TETRA uses four-slot TDMA on a 25 kHz channel. DMR was designed with three levels. DMR levels I and II (conventional) were first published in 2005 and DMR III (Trunked version) was published in 2012, with manufacturers producing products within a few years of each publication. The primary objective of the standard is to define a digital system with low complexity, low cost and inter-brand interoperability, so that radio buyers are not locked into a proprietary solution. In practice, given the current limited scope of the DMR standard, many vendors have introduced proprietary features that make their product offerings non-interoperable with other brands. SPECIFICATIONS The DMR interface is defined by following ETSI standards: TS 102 361-1: Air interface protocol TS 102 361-2: Voice and General services and facilities TS 102 361-3: Data protocol TS 102 361-4: Trunk protocol The DMR standard works within the existing channel spacing 12.5 kHz used in terrestrial mobile frequency bands worldwide, but achieves two channels of voice through two-slot TDMA technology built around a 30 ms structure. The modulation is 4-state FSK, which creates four possible symbols on the air at a rate of 4,800 symbols/s, which corresponds to 9,600 bits/s. After overhead, forward error correction, and splitting into two channels, 2,450 bits/s remain for a single voice channel using DMR, compared to 4,400 bits/ s using P25 and 64,000 bit/s with traditional telephone circuits. The standards are still (as of late 2015) under development with revisions made regularly as more systems are developed and improvements are discovered. It is very likely that further improvements will be made to the standard, something which will require future firmware upgrades in terminals and infrastructure to take advantage of these new improvements, with potential incompatibility issues if not done. DMR covers the RF range from 30 MHz to 1 GHz. There are DMR implementations, (from early of 2016), operating up to 66 MHz (within the European Union, in "Lo-Band VHF" 66–88 MHz.) The DMR Association and manufacturers often claim that DMR has superior coverage performance to analog FM. Forward error correction can achieve higher voice quality when the receive signal is still relatively high. In practice, however, digital modulation protocols are much more prone to multipath interference and fail to provide service in areas where analog FM would otherwise provide degraded but audible voice service. At higher voice quality, DMR outperforms analog FM by about 11 dB. But at lower voice quality, analog FM outperforms DMR by about 5 dB. Where digital signal processing has been used to improve quality of analog FM audio, then analog FM generally outperforms DMR in all cases, with a typical improvement of 2–3 dB for "high quality" voice and about 5 dB improvement for "lower quality" voice. Where digital signal processing is used to improving analog FM audio, the overall "delivered sound quality" is also significantly better than DMR. However, the DSP processing of analog FM audio does not remove the 12.5 kHz requirement, so DMR is still more efficient spectral. DMRDMR Tier I SERIES DMR Tier I products are intended for unlicensed use in the European PMR446 band. Tier I products are specified for non-infrastructure use only (ie without the use of repeaters). This part of the standard provides for consumer applications and low power commercial applications, using a maximum RF power of 0.5 watts. Note that there is no license free assignment on this frequency outside of Europe, which means that PMR446 radios, including DMR Tier I wireless radios, can be legally used in other countries only if the appropriate radio license is obtained by the operator. Some DMR radios sold by Chinese manufacturers (mainly Baofeng) have been mislabeled as DMR Tier I. A DMR Tier I radio will only use the unlicensed PMR446 frequencies and have maximum transmit power of 0.5 W as required by law for all PMR446 radios. Although the DMR standard allows DMR Tier I radios to use continuous transmission mode, all known Tier I radios currently use TDMA, the same with Tier II. This is likely due to the battery savings that come with transmitting only half the time instead of continuously. DMR Tier II DMR Tier II covers licensed conventional radio systems, mobile and handheld devices operating in PMR frequency bands from 66 –960 MHz. The ETSI DMR Tier II standard is aimed at those users who need spectral efficiency, advanced voice functions and integrated IP data services in licensed bands for high power communications. Some manufacturers market DMR Tier II compliant products. ETSI DMR specifies two TDMA slots on 12.5 kHz channels for Tier II and III. DMR Tier III A portable radio compliant with the DMR Tier III digital radio standard. DMR Tier III covers trunking in frequency bands 66–960 MHz. Tier III supports TETRA-like voice and short message handling with embedded 128-character status messages and short messages with up to 288 bits of data in various formats.It also supports packet data service in various formats, including support for IPv4 and IPv6. Tier III compliant products were released in 2012. In April 2013, Hytera participated in the completion of the DMR Tier III Interoperability Test (IOP). DMR ASSOCIATION In 2005, a memorandum of understanding (MOU) was established with potential DMR suppliers, including Tait Communications, Fylde Micro, Selex, Motorola, Hytera, Sanchar Communication, Vertex Standard, Kenwood and Icom to establish common standards and interoperability. While the DMR standard does not specify the vocoder, members of the MoU agreed to use the vocoder half-rate DVSI Advanced Multi-Band Excitation (AMBE) to ensure interoperability. In 2009, MS members established the DMR Association to work on interoperability between vendors' equipment and provide information on the DMR standard. Official testing interoperability tests have been conducted since 2010. The results are published on the DMR Association website. There are approximately 40 members of the DMR Association. The standard allows DMR manufacturers to implement additional features beyond the standard, which has led to practical issues of non-interoperability between commercial signals, in violation of the DMR MS. HAMMER USE DMR is used in the VHF and UHF amateur radio bands, which was initiated by DMR-MARC around 2010. The FCC officially approved the use of DMR by amateurs in 2014. At amateur sites, coordinated DMR identification numbers are assigned and managed by RadioID Inc. The coordinated database can be uploaded to DMR radios to display the name, call sign and location of other operators. Internet-connected systems such as DMR-MARC, Free-Star ( an experimental approach to implementing a vendor neutral and open source, digital communication network for amateur radio), BrandMeister network, TGIF, FreeDMR and many others (including many previously closed clusters now connected to larger networks in wide area accessibility), allow users to communicate with other users around the world through connected DMR repeaters or 'hotspots' which are often based on a Raspberry Pi board computer. There are currently more than 5,500 repeaters and 16,000 'hotspots' connected to the BrandMeister system worldwide. The low cost and the increasing availability of Internet-connected systems have led to an increase in the use of DMR in the amateur radio bands. The development of Raspberry Pi-based hotspots, often those using Pi-Star software, has allowed users to connect their radios to one or more Internet-connected systems simultaneously. DMR hotspots are often based on the open source Multimode Digital Voice Modem or MMDVM, hardware with firmware developed by Jonathan Naylor.

Sound card interface The photo shows how to make an adapter (interface) between the radio and the PC. It includes a fixed PTT command to broadcast, without using any USB or COM port connection. PTT is commanded by a pilot tone on the right line output channel of the sound card. Audio modulation is applied to the left line output channel of the sound card. The audio signal from the wireless is applied to the line input of the sound card at two different levels. On the right channel the signal is very strong and distorted. This signal is used for the VOX of the FRN Client program. In the left channel the signal is less strong, but with better quality. This signal will be broadcast to the Internet. Resistor R4 must be fitted if the radio has combined PTT wiring and microphone input. Settings in the FRN Client. The following photo shows how to set up this adapter (interface) Don't forget to turn off VOX on the radio. Click "Settings--> Adapter" (interface) to open the interface menu.

Click on the image to see the dashboard M17 is a digital radio modulation mode developed by Wojciech Kaczmarski (amateur radio call sign SP5WWP) et al. M17 is primarily designed for voice communications on the VHF amateur radio bands, and above. The project received a grant from the Amateur Radio Digital Communications in 2021 and 2022. The protocol has been integrated into several hardware and software projects.[citation needed ] In 2021, Kaczmarski received the ARRL Technical Innovation Award for developing an open-source digital radio communication protocol, leading to further advancements in amateur radio.[9] Technical characteristics Spectrogram of the M17 protocol transmission. Time is on vertical axis, advancing from bottom to top. There's a 40-millisecond preamble visible at the beginning of the transmission. M17 uses Frequency-Division Multiple Access (FDMA) technology in which different communication streams are separated by frequency and run concurrently. It utilizes 4,800 symbols per second, 4-level frequency-shift keying (4FSK) with a root Nyquist filter applied to the bitstream. Radio channels are 9 kHz wide, with channel spacing of 12.5 kHz. The gross data rate is 9,600 bits per second, with the actual data transfer at 3,200. The transmission, called stream, is divided into 40-millisecond long frames, each prepended with a 16-bit long synchronization word. A group of 6 frames form a superframe and is needed to decode the link information data. Protocol allows for low-speed data transfer (along with voice), e.g. GNSS position data. The mode has been successfully transmitted through EchoStar XXI and QO-100 geostationary satellites. The protocol's specification is released under GNU General Public License . Voice encoding M17 uses Codec 2 , a low bitrate voice codec developed by David Rowe VK5DGR et al. Codec 2 was designed to be used for amateur radio and other high compression voice applications. It is based on linear predictive coding with mixed-harmonic sinusoidal excitation. The protocol supports both 3200 (full-rate) and 1600 bits per second (half-rate) modes. Error control Three methods are used for error control: binary Golay code , punctured convolutional code and bit interleaving . Additionally, exclusive OR operation is performed between data bits and a predefined decorrelating pseudorandom stream before transmission. This ensures that there are as many symbol transitions in the baseband as possible. A 16-bit cyclic redundancy check (CRC) code is used for data integrity assurance. Application functions The M17 protocol was primarily designed for amateur radio use. Callsign encoding: 48-bit field holding up to 9 alphanumeric characters eliminates the need of a centralized user-ID database. Stream and packet modes of operation. Stream mode offers one 3200bps net bitrate channel (encoded speech or data) or two 1600bps channels (encoded speech alongside data). Packet mode supports text messaging, APRS and AX.25 . Slow-speed side channel for short and repeated data transfers, e.g. GNSS position data or telemetry. Encryption : Bit scrambler encryption: a pseudorandom binary sequence created by combining an exclusive-or bitwise operation on the audio or data stream and a linear-feedback shift register using one of 3 feedback polynomials with 255, 65,535 and 16,777,215-bit repeat periods. AES encryption : 128-bit block encryption cipher operating in CTR mode with user-selectable 128, 192 or 256-bit key. Hardware support Prototype of the CS7000 M17 handheld radio (CS760), running OpenRTX open-source firmware. With a small hardware modification, TYT MD-380, MD-390 and MD-UV380 handheld transceivers can be flashed with a custom, free, open source firmware to enable M17 support. In July 2024, a US-based company Connect Systems, Inc. released the CS7000-M17, being the first commercial off-the-shelf handheld transceiver with native M17 support. Bridging with other modes Links between M17 and other digital voice modes and Internet linked networks exist, with several networks providing M17 access. Modes bridged include DMR , P25 , System Fusion, D-STAR , NXDN , AllStarLink, EchoLink and IRLP . M17 over IP Access nodes and repeaters can be linked using reflectors. Over 100 M17 reflectors exist worldwide (June 2025). History The project was started in 2019 by Wojciech Kaczmarski in Warsaw , Poland . A local amateur radio club he was a member of, was involved in digital voice communications. Kaczmarski, having experimented with TETRA and DMR , decided to create a completely non-proprietary protocol and named it after the club's street address - Mokotowska 17 . As every part of the protocol was intended to be open source, Codec 2, released under the GNU LGPL 2.1 license, was chosen as the speech encoder. Applications and projects with M17 support OpenRTX - free and open-source firmware for ham radios DroidStar - digital voice client for Android SDR++ - multiplatform, open-source software defined radio receiver SDRangel - multiplatform, open-source software defined radio receiver/transmitter OpenWebRX - web-based software defined radio receiver mrefd - M17 reflector rpitx - general radio frequency transmitter for Raspberry Pi dsd-fme - digital speech decoder mvoice - voice client and graphical repeater application (Raspberry and Linux) mspot - hotspot software

Click on the image to proceed HBlink represents a server-side implementation of the Home-Brew Repeater protocol as defined by DMR+, MMDVM and Brandmeister. One can speak as a "peer/client" (ie a repeater or hotspot), or as a "server/master" (ie as any of the DMR networks an MMDVM device connects to). It has tools for selectively routing calls between groups of one or more devices. It can do this statically or dynamically. The number of "systems" (groups of devices or connections to other servers) and the number of devices connected to those systems are limited by the speed and size of available CPU and RAM respectively. HBlink is remarkably efficient for a Python program, and its upgrade to HBLink3 is about the corresponding use of the Python3 program. HBlink does not implement protocol translation to analog, or YSF, or D-Star or anything else.

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