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ON6MU Low Power amplifier

This resource examines the appropriate use of /M (mobile) and /P (portable) suffixes in amateur radio callsigns, specifically within the context of the UK Amateur Radio Licence. It addresses common ambiguities and challenges in determining operational status, such as operating from a summit or while walking. The discussion references the licence version in force before February 21, 2024, noting that while current regulations recommend but do not specify suffix use, the prior definitions remain relevant for understanding common practice. The content dissects key sections of the licence, including "Notes to the licence" (d)(i-iii) which outlines /A, /P, and /M usage based on location, and "Temporary Location" (jj) which defines /P operations. It also clarifies "Mobile" (17(1)(x)) as operating in or on a vehicle, on a pedestrian, or on a vessel on inland waters. The author provides examples and recommendations for choosing between /M and /P when both might apply, such as when operating from a parked car with a deployed mast or using a handheld on a summit. Historical notes from M1MAJ, G8ADD, and G6MZX are included, tracing the evolution of suffix rules from pre-BR68 days to the 1977 licence version. These historical perspectives highlight how past regulations have influenced current interpretations and persistent myths regarding /M usage. The resource emphasizes making an informed choice based on the licence and communicating the station's operational circumstances clearly.

HSMM Experiments on the 6M Amateur radio Band

The ÖVSV website provides extensive resources for Austrian radio amateurs, including details on its nine **Landesverbände** (regional sections) and the Austrian Military Radio Society (AMRS). It features information on licensing, legal frameworks, and **band plans** for both HF and VHF/UHF operations. The site also covers various amateur radio activities such as contests (HF, VHF/Microwave, Alpe-Adria, SOTA, ARDF), technical projects like WRAN, and educational content explaining what amateur radio is and how to become a licensed operator. Recent news items highlight events like the "Laa Funk '26" exhibition, the "OE5XLM" club station's participation in the CQ WW Contest, and the "International Marconi Day 2026" activation by "OE26M" from Küniglberg. The site lists upcoming events, including a 160m OE-Aktivitätsrunde, a seminar on Baluns/Ununs, and various club meetings and flea markets. Membership is facilitated through regional sections, and the site emphasizes amateur radio's role in independent communication during crises.

A magnetic loop antenna for the VHF band, featuring a high gain that can be compared to a quarter wave vertical antenna

The WaveNode WN-1 is a precision, full-featured Amateur Radio Station Monitoring System which now includes Audio Announcing for RF power, SWR, and DC monitoring using HF and UHF remote sensors.

A Portable 100 watt radio station setup composed by a 706MKII transceiver, Z-100 antenna tuner and power supply by N1GY

50MHz Collapsible 2 Element Mini Beam antenna, an overview the development of the 6MBA.

A 200 kHz bandwidth digital transmission system for image transfer in the Amateur Service is under development, specifically targeting VHF allocations. John B. Stephensen, KD6OZH, leads this project under an FCC Special Temporary Authority (STA) valid until September 10, 2006, authorizing emissions up to 200 kHz bandwidth in the 50.3-50.8 MHz segment. Current regulations typically limit bandwidths to 20 kHz on VHF amateur bands, making this STA crucial for testing wideband digital modes. The modem, a modified **OFDM** (Orthogonal Frequency Division Multiplexed) unit, was initially tested on the 70-cm band. It splits a high-rate data stream into multiple low-rate subcarriers to mitigate multipath echoes. The system uses a DCP-1 card with a Xilinx XC3S400 FPGA and Oki Semiconductor ML67Q5003 microcontroller. The transmitter, located at 36d 46m 30s N, 119d 46m 22s W, generates 150 WPEP into an 8 dBi gain vertical antenna, while the mobile receiver uses a Ham-stick. Three data formats for 50, 100, and 200 kHz channels are being tested, with encoded data rates of 96, 192, and 384 kbps. Verilog code for the VHF OFDM modem is 95% simulated, with modifications from the UHF version including increased filter coefficient precision and a change from Ungerboeck **TCM** to BICM for improved performance over fading paths. Final tests will involve one-way over-the-air measurements of bit error rates and coverage area.

Eme operations from Anchorage, Alaska by KL6M ex AL7OB

Six meters (6m) operation and satellites and two meters band

Two coupled PAs with each 2 times 2C39 deliver around 400W RF.

eHam user reviews of the Yaesu FT-450 HF+6m t ransceiver

This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

KV5R review of the Icom 706MkIIG

A quarter wave antenna with dimensions for uhf and vhf bands

13,8 v / 1 A power supplies using the UA78 series by ON6MU

6m/2m/70cm Yagi Antenna Built from Old TV Antenna This turned out to be a great little antenna. It works the 6 meter, 2 meter and 70 centimeter bands. You can use one common feedpoint or two seperate feedpoints depending on how you would like to connect this antenna to your transceiver.

9600 Baud modification on the Kenwood TM441 by ON6MU

PTT and souncard interface for the kenwood TM255 and TM455

Project Condor16 VHF transceiver

Microphone tips for the Icom 706MkIIG

Unfilter LF output from the TH215/415 kenwood portable radio

M0CVO Antennas, amateur radio antennas for fixed station or portable operations, HF/6m all are catered for. The antennas produced by us are all manufactured by Nigel Booth, M0CVO

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

An early review of the Icom IC-7300 HF + 6M Transceiver includes four videos demonstrating reception on 40 meters band

This program combines the formerly know programs PreFind and MU-Locator into one but with many improvements to find the location of any prefix, country or Maidenhead locator! Display and find locators on any map and calculate the distance and direction between two locators.

2-Element-12,5-Ohm-Yagi with 0,40m-Boom complete description of all details for building this Yagi and stacking to an array

The ZR6YY Antenna for 6m by Maurius ZR6YY revisited by YT1VP

5 Elements 12,5 Ohm Yagi with a 6m Boom

Home Brew 6 Meter Amplifier with a single 4CX250B by W4NFR

Interfacing the IC706MKIIG for Soundcard & TNC modes

This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.

This simple project, based on the orginal CobWebb-Antenna model, is about an horizontally polarized, omi-directional antenna for the six meter band.

Review site of the Icom IC-706 MkIIG by KV5R

ON6MU 12 Watt amplifier schematic

The Milpitas Amateur Radio and Electronics Society was formed in 2000 and incorporated in 2002 The club is independent from but supports two volunteer emergency communications organizations: Milpitas Amateur Radio Emergency Services (ARES) and the Milpitas City Radio Amateur Civil Emergency Services (RACES) groups.

Schematic for a 1200/300 baud modem for baycom compatible software

100-watt UHF repeater (444.500+ PL100) and a 6-meter repeater (53.68- PL114.8) are owned and maintained by South County ARES to support emergency communications for Belmont, East Palo Alto, Foster City, Menlo Park/Atherton, Redwood City, San Carlos, San Mateo, and Woodside/Portola Valley. The organization emphasizes training, including weekly nets and practice sessions, to improve message passing accuracy and brevity, crucial skills for **emergency communication**. Resources like the San Mateo County Sheriff's Office Ham Radio Frequency Plan Recommendation and **Chirp-compatible CSV files** for Baofeng radios are provided. Participation in community events is encouraged to build skills and connections among members. The group operates without collecting dues, relying on donations and member contributions of time and expertise. Training pages are available for new hams and those seeking license upgrades, along with a "Tips for New Hams" section. The site also features a monthly calendar of events, including board meetings, general meetings, and hospital nets, alongside a newsletter, the "South County Communicator," and various operational documents like the Net Control Manual and SCARES Handbook.

An article about the Rybakov 806 Vertical antenna. The classic Rybakov configuration is a 7.6m or 8m ( aprox 25 or 26 feet) wire fed through a 4:1 UNUN

Plans for building your own 3-element beam for use on 6m.

Simple QRP projects, 10m, 6m, WSPR beaconing, sub-9kHz and other random stuff

ACOM 1000 160-6m amplifier specifications and features

Adding a 20m band pass filter for the Icom IC-706MkII(G) by ON7EQ

Review of the Icom IC-706 series, include a short demo video and a short menu table available for download

A J-pole antenna plan for 50 MHz based on the DK7ZB design

Comparing many antennas for 50 MHz band

Article about a high-gain, narrow-band version feature 7.15 dBd and a F/B 13dB with details on how to setup in array mode

An homemade HF, 6m, 2m SSB CW transceiver project by m0dgq

XR6M Mocha Island Extreme Bands DXpedition 2003