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DMR personal web site. Includes download links for Codeplug for Hytera AR685 PD685G, PD785G, PD785 & X1P with DMR Plus and Brandmeister support with VFO like channels. Repeater maps. In German.

Nashua Area Radio Club, Education & Fellowship, meeting 1st Tuesday of month.

A review of the Wouxun VHF UHF handheld transceiver KG-UV8D

The White Rose Amateur Radio Society website provides information on amateur radio activities in Leeds and West Yorkshire, including details on meetings and membership. Contact details for the membership secretary are also available.

MARCA, Inc. operates approximately 24 repeaters across Arizona mountaintops and Phoenix-area rooftops, supporting modes like D-STAR and Fusion. The club, holding the **W7MOT** callsign, engages in diverse activities including ARRL Field Day events near Forest Lakes, AZ, ARRL FMT contests, and antenna experimentation. Members actively participate in HF operations such as voice, digital, CW, DXing, and various digital HF modes, alongside MESH and EOC operations within the valley. The club's interests span a broad technical spectrum, from SDR radio building to antique radio restoration, and include modern digital modes like WSPR, WSJT, FT8, and FT4. They also explore computer-based operations such as Echolink, fostering a dedicated Single Board Computer (SBC) and Raspberry Pi group. Monthly VE testing sessions for Technician, General, and Extra Class licenses are conducted by Ray Vasquez, K4RMV. Meetings are held on the third Tuesday of each month, typically lasting two hours, with a business segment followed by a technical presentation. These gatherings occur in-person at IHop in Mesa, AZ, and concurrently via Zoom, accommodating both local members and winter visitors. Informal chat groups often form post-meeting to discuss specialized topics like D-STAR, SDR, APRS, MESH, and Fusion.

Tait Digital Mobile Radio (DMR) is an affordable digital communications platform that delivers a range of workforce efficiencies and operational benefits for mission critical users.

Common mode currents are those currents that flow in the same direction on a wire bundle, as opposed to the currents that flow

The club is based in chingford, north east london

AREDN provides the Amateur Radio Community with a quality solution for supporting the needs of high speed data in the Amateur Radio and Emergency Communications field.

NARL homepage, the namibian amateur radio league

Saskatchewan Hamfests Then and Now

The Stu Rockafellow Amateur Radio Society was founded in 1960 and has been affiliated with the ARRL for 45 years.

St. Albans, VT

DF0WD/DL4YHF's Longwave Overview details amateur radio operations on the 135.7 to 137.8 kHz segment in Germany. The author outlines the "inofficial" European band plan, specifying segments for QRSS, TX tests, beacons, conventional CW, and data modes. Early LF activities at DF0WD began with a 20-watt CW transmitter, later upgraded to a homemade linear transverter capable of 100 watts, driven by an Icom IC706 on 10.137 MHz. The station's antenna system includes a 200-meter wire, approximately 10 meters above ground, supported by football field light-masts. Despite its length, the antenna's efficiency is noted as very low due to the immense wavelength of about 2.2 km. The author's experience highlights the significant challenge of achieving effective radiated power (EIRP) on LF, estimating DF0WD's EIRP at around 80 milliwatts based on field strength measurements from PA0SE. DF0WD/DL4YHF has successfully worked numerous countries on 136 kHz CW, including DL, F, G, GI, GM, GU, GW, HB9, HB0, LX, OE, OH, OK, OM, ON, OZ, PA, and SM. The author also mentions ongoing efforts to log contacts with CT, EI, LA/LG, and to complete a two-way QSO with Italy, demonstrating persistent activity on this challenging band.

The Sandy Amateur Radio Club was organized on September 25, 2014. It is open to any and all licensed amateur radio operators and anyone who is interested in the hobby

Coastal Amateur Radio is for hams south of the Fraser. Even if you live north of the Fraser you are welcome to join in. Hams who come together for the love of HF & VHF in the hobby.

A club for all those who are interested in Amateur Radio, meet in the London Borough of Harrow which is located in North-West London, UK

Unlike older radios, the 706 uses only one crystal oscillator (called the Master Oscillator). All other frequencies in the radio (L.O., 3-4 I.F. stages, VFO, and CW-offset) are computer-derived from the Master Oscillator. This makes it relatively simple to frequency-align the radio, so that it agrees with the Frequency Display in all modes.

Ham radio club blog

San Rafael, CA ham radio club

The Bella Vista Radio Club (BVRC) welcomes you to the NW Arkansas, SW Missouri and NE Oklahoma Area.

Broadcast listenening radio magazine in spanish

A mission of the club is to promote amateur radio by way of educational programming and activities. MCARC is an affiliated club with the ARRL.

This article is about a homebrew 6 meter lightweight Moxon antenna. Article includes a full part list, instruction to assemble the parts and pictures.

The Primary N6OCS Repeater is located at 5700 feet on Santiago Peak in the Santa Ana mountains.

Pittsburgh, PA

FPARC - Supporting amateur radio enthusiasts and SWLs in the Portsmouth area. Monthly meetings and summer Field Weekends using club call M0GZN and occasional Special Event Station GB1PF.

The WCARC is a general interest ARRL Affilated Special Service Club.

Wireless Society of Southern Maine Projects, instructions and photos for many ham radio projects and experiments, including antenna construction and modelling, kit building, station setup, restoration and more

DK7IH QRP transceiver for 14 MHz. This small and compact home made transceiver with a max power output of 5W, the VFO module is based on the clock oscillator chip Si5351A by Silicon Labs ATmega168 and OLED 1306

Amplitude Modulation (AM) is essentially a mixing process where the audio modulating signal is mixed with the radio frequency carrier

What are the Differences between UV5R and UV82 Series

Crystal receivers are radio receivers that work without a power supply or batteries. Gallery of some crystal radio projects

927.1250 MHz Santiago Peak, CA USA

Polish Online radio shop, dealer for President Alan Midland CBradia CRE Magnum Intek Yosan CRT Firestik Antenna Sirio Solarcon

Affiliated with the American Radio Relay League in the Oregon Section of the Northwestern Division

Most members of GRRAA reside in Union County and Wallowa County Oregon, however we welcome any and all that have an interest in amateur radio.

A personal blog about amateur radio activities, including homebrew, bitx, ubitx, mcHF, JT65, FT8 and more digital communications.

Eham users review of Radio Shack PRO-95

GM4YEQ Galashiels and District Amateur Radio Society (GDARS)

Using portable battery power is always a challange when operatin amateur radio in sota oprations. This article is about implementing lithium iron phosphate cells (LiFePO4) in ham radio portable operations.

The Bazooka antenna, a coaxial dipole, functions as an omnidirectional antenna with vertical or horizontal polarization. Patented in 1939 and refined in 2006, it features a quarter-wavelength coaxial cable with separated conductors. The outer conductor connects to a sleeve, while the inner conductor extends vertically. Initially complex, it has been simplified for versatile use, including military applications. Adding elements can modify its behavior for NVIS or Yagi-Uda configurations. Experiments in 2007 at the Campus de Pesquisas Geofísicas in Paula Freitas-PR demonstrated consistent VHF and UHF performance, showing reliable return loss measurements despite variable weather.

Heinrich Hertz was the first to send and receive radio waves.

The K3NG Keyer is an open source Arduino based CW (Morse Code) keyer with a lot of features and flexibility, rivaling commercial keyers which often cost significantly more.

A.I.R.A. is chartered by the State of Illinois as a non-for-profit corporation and has been in existence over 21 years

How to set new squelch values on Baofeng HT Radios by using the CHIRP software. Make sure you save the original configuration before editing squelch levels. Edit at your own risk.

Notes on using a modified R7100 with discrimator tap