Amateur Radio Daily

MMDVM-Based Projects to Merge Into One Open-Source Project

From ARDC:

Funded by a grant from Amateur Radio Digital Communications (ARDC), Jonathan Naylor (G4KLX) has been hired as a full-time software developer. Jonathan is a pioneer of digital voice software, developing software for D-STAR, DMR, System Fusion, M17, NXDN, P.25, and POCSAG.

With a full-time software developer dedicated to the MMDVM project, many important tasks can be carried out, such as:

• Bug mitigation
• Improving the core code module (MMDVMHost) relating to both the display interfaces and digital modes
• Adding support for industry standards, such as Message Queuing Telemetry Transport (MQTT), which is analogous to a fast and reliable texting system that allows devices to communicate efficiently
• Creating a web-based configuration and monitoring solution
• Creating a portable UI on additional hardware platforms
• Adding KISS/AX.25 packet support along with higher speed data rates to run on existing MMDVM hardware
• Porting firmware to next generation microcontrollers

Work has started on the aforementioned software upgrades to MMDVM, and many of the long-term bugs in the software have been fixed. Regarding their progress toward improving MMDVMHost, they have added support for AX.25, and they now provide full support for amateur-driven M17 digital voice protocol.

Work is currently underway to develop 9600, 19200, and 38400 baud packet modes that support narrow bandwidth using a modulation (4FSK) similar to Digital Mobile Radio (DMR). The packet modes include support for IL2P, which is a new link layer protocol with integral forward error correction (FEC).

To learn more about the MMDVM project, visit mmdvm-project.org.

Source: ARDC open_in_new

International Enigma Reloaded Event

The Enigma Reloaded International Event takes place September 29 through October 7, 2023. This is the 7th year of the event in which hams attempt to contact as many activating stations as possible for a chance to win the overall award. Participation certificates will also be available.

The main idea behind the Enigma event is to involve people all over the world, and specifically young people, in focusing their attention on the importance of the scientific research in general and specifically on cryptography, as main driver of most of the crucial events at the end of World War II...

Source: Enigma Reloaded open_in_new

Come and Get Wyoming Special Event

The Shy-Wy Amateur Radio Club will be hosting the "Come and Get Wyoming" special event station W7Y from September 22 through October 2, 2023.

This will be a multi-band and multi-mode event. The schedule is available to view. QSL certificates and cards will be available.

Source: Shy-Wy Amateur Radio Club open_in_new

The Online Radio Club MX0ONL

The Online Radio Club (MX0ONL) was formed in 2018 to promote all aspects of radio activities, especially for those unable to meet regularly at a specific physical location (hence “online”).

Online meetings are held over Zoom every Thursday evening 1930-2100 UK time.

The club also runs a multi-protocol reflector:

• DSTAR Reflector XRF994 B / DCS994 B / REF994 B
• DSTAR SmartGroup TORC2
• DMR via XLX or BrandMeister 2348140
• Yaesu System Fusion Room 37815
• Echolink Node 592933 (MX0ONL-L)
• AllStarLink Node 52585
• AmateurWire VOIP 90020

Source: The Online Radio Club open_in_new

Ham Imports Radio Library

Ham Imports is a comprehensive database of Chinese radio manufacturers. The website makes comparison between radios easy. Each entry features a pricing guide, photos, specifications, a lengthy description, and video reviews.

CREATE TABLE dailyextremes(date text NOT NULL, temphigh integer NOT NULL, templow integer NOT NULL, presshigh integer NOT NULL, presslow integer NOT NULL);

Source: Ham Imports open_in_new

Wisconsin POTA Campout October 13-15

The inaugural Wisconsin Ham Radio POTA Campout will take place October 13-15 2023. The event will take place at the Clear Lake Campground in the Northern Highlands American Legion State Forest (K-7260).

This year we are opening up our campout to the greater POTA community. This event will be part social activity and part Parks on the Air activation. You can activate as little or as much as you want, in whatever mode you choose. The sky is the limit.

Source: KB9VBR open_in_new

OK2KKW The Czech VHF UHF Ham Radio Contest Club

The Czech VHF/UHF Ham Radio Contest Club (OK2KKW) has been around in one form or another for 33 years. They boast an impressive record and have hosted several expeditions over the years.

The OK2KKW homepage features a heavy dose of ham radio news, so be sure to check back often!

Source: OK2KKW open_in_new

HELLFEST Feld-Hell Contest Friday the 13th

HELLFEST is the content from Hell. Taking place on Friday October 13th, the goal is to make as many contacts as possible using the Hellschreiber digital mode.

All contacts must be made within the contact window: Friday, October 13th at 2pm EDT until Saturday, October 14th at 2am EDT (18:00 UTC 2023-10-13 until 06:00 UTC 2023-10-14)

Operators are encouraged to operate in the following windows 3580kHz-3600kHz, 7080kHz-7100kHz, 14080kHz-14100kHz, 21080kHz-21100kHz, 28080kHz-28100kHz as to not cause interference with normal FT8, FT4 and CW operations

Source: HELLFEST open_in_new

20 Meter Vertical Half-Wave Dipole with inverted-Vee Lower Element

Thanks to Tom Pierce K8EBR for submitting his write-up of a 20 meter vertical half-wave dipole. Tom describes an outstanding antenna for DX primarily because it is an efficient radiator, it exhibits a true 50 ohm input impedance, and it has an almost ideal horizontal toroid low angle radiation pattern.

Source: Tom Pierce K8EBR open_in_new

Digital Library of Amateur Radio and Communications Reaches 90,000 Items

The Digital Library of Amateur Radio & Communications (DLARC) has now added over 90,000 items to its collection of amateur radio related resources. The free online library is hosted by the Internet Archive.

Those interested in amateur radio and shortwave listening will find resources including magazines, club newsletters, podcasts, radio manuals, and early ham radio related Usenet conversations.

Digital Library of Amateur Radio & Communications is funded by a grant from Amateur Radio Digital Communications (ARDC) to create a free digital library for the radio community, researchers, educators, and students. DLARC invites radio clubs and individuals to submit material in any format. If you have questions about the project or material to contribute, contact:
Kay Savetz, K6KJN
Program Manager, Special Collections
kay@archive.org
Mastodon: dlarc@mastodon.radio

Source: DLARC open_in_new