Simple 2-tone generator
Technical Reference/Test Equipment/Signal Generator
A simple 2-tone-generator for testing the linearity of SSB transmitters. This device is as simple as useful. With 2 transistors and an oscilloscope, it is fairly easy to test the linearity of your SSB transmitter. The 2-tone-method is a standardized test method that can be used to determine the maximum output and the amplification characteristics of a sideband transmitter.
Careers for Hams: ARRL is Hiring
ARRL The National Association for Amateur Radio® has open positions for full-time employment in both technical and non-technical areas of the association. Among the qualifications for each position is a desire for experienced radio amateurs, individuals who will thrive in a collaborative results-driven environment, and a commitment to advancing ARRL’s mission.
“It’s so rewarding to work for an ...
How to Activate a SOTA Peak
DX Resources/SOTA
This documentation effort is intended to outline some of the primary steps to take in activating a SOTA Peak. It includes some of the planning steps, the activation, and post-activation steps. This outline is designed to serve as a general guideline for SOTA Activators
Portable J-Pole Antenna
Antennas/J-Pole
The Pocket Portable J-Pole Antenna, a neat little project that will prove useful for portable operation or improving your HT in the fringe areas.
Top Amateur Radio Websites - Issue 2325
ADIF Processor Map QSOs with Google Earth, General Coverage Receiver LW MW SW, IC-7300 Arduino Based Antenna Switch, Yaesu FT-857D Menu Settings for SOTA, Bird Wattmeter Slug Calibration , DX0NE Spratly Island, VU7W Lakshadweep Islands,
Techs: Now is the Time to Upgrade to General!
A new question pool took effect on July 1, 2023, for General-class license exams. ARRL has released new editions of its popular study resources including the 10th edition of The ARRL General Class License Manual and the 7th edition of ARRL's General Q&A.
ARRL has also updated its free online review and practice resource, ARRL Exam Review for Ham Radio.
"ARRL Volunteer Examiners (VEs) are already ...
Commercial Interests Petition FCC for High Power Allocation on Shortwave Spectrum
Ellis County Amateur Radio Club
The Ellis County Amateur Radio Club is in Ellis County, located in North Central Texas just south of Dallas.
Orange conty radio amateurs
ARRL Special Services Club,
Orange County, North Carolina
DK3WN SatBlog
Ham Radio/Blogs/Special Interest
A multi editor blog about ham radio satellites operations
LU1DSO Radio Club Olavarria
Ham Radio/Clubs/South America/Argentina
Radio Club Olavarria LU1DSO website
Address: Necochea 1389, Olavarria, Buenos Aires Argentina
QRP Z Match Antenna Tuner Project
Antennas/Tuners
A Home made antenna tuner for QRP transceivers. This small tuner is the ideal for portable operations with random length wires or whenever you have not a resonant antenna.
VHF UHF Duo band Yagi Antemma
Antennas/VHF UHF
Duoband Yagi 2m/70cm with 4 Elements on 2 m and 5 Elements on 70 cm and one Feed point. The 4-El.-Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes.
SSB-Transceiver for 14 MHz
Technical Reference/QRP Projects
A lean design SSB-Transceiver for 14 MHz, Simple SSB Transceiver for 14MHz VFO controlled, 5W PEP
ARRL Audio News July 7, 2023
ARRL Audio News July 7, 2023
Dual Championships on HF July 8-9, 2023
The International Amateur Radio Union (IARU) HF World Championships begin at 1200 UTC on Saturday, July 8, 2023, and run through 1159 UTC on Sunday, July 9.
A station operating as IARU Headquarters will be operated from ARRL The National Association for Amateur Radio® in the US, from Newington, Connecticut. ARRL is the IARU International Secretariat, having served as the “headquarters” of the IA...
N0AKA Amateur Radio Station
Tom's amateur radio web site provides information about Ham radio in the heartland of America. Nebraska and Iowa, USA
Virtual Radar from a Digital TV Dongle
Operating Modes/Aircraft scatter
Track aircraft by reprogramming an inexpensive digital TV USB stick to receive Automatic Dependent Surveillance-Broadcast signals.
A Magic Ground Mobile Antenna
Operating Modes/Mobile
Experimenting and testing vertical antenna for HF bands on mobile operations.
Call for Nominations for ARRL Director and Vice Director
Attention to full ARRL members in the Atlantic, Dakota, Delta, Great Lakes, and Midwest Divisions. You have the opportunity to choose a Director and a Vice Director to represent you for a 3-year term beginning January 1, 2024. ARRL The National Association for Amateur Radio® is governed by its Board of Directors. A voting Director is chosen by ballot by the full (licensed) ARRL members in each ...
Frequency Accuracy and Stability of WWV and WWVH
Operating Aids/Time
Measuring the Frequency Accuracy and Stability of WWV and WWVH by Michael A. Lombardi. An examination of just how accurate these frequency standard stations are.
A Universal Programming Cable for Radios
Technical Reference/Programming Radio
The programming cable is intended to be used with a computer RS-232 port for programming radios and other devices. The main goal of this cable schematics is inverting signal levels.
ARRL Section Managers Prepare for New Terms
When the nomination period for the summer ARRL Section Manager election cycle concluded on June 9, 2023, there was only one candidate for each of the Sections up for election.
The following incumbent Section Managers were declared re-elected to new 2-year terms starting on October 1, 2023:
Amanda Alden, K1DDN, Colorado.
Jo Whitney, KA7LJQ, Eastern Washington.
Diana Feinberg, AI6DF, Los Angeles.
Caro...
Bent-end dipole antennas
Antennas/Dipole
Discussion about laterally bent-end dipoles. Bent by percentage of length and fine-tuned by angling the bent ends.
Angle of OCF L-Dipole Antennas
Antennas/OCF
This page is a discussion about impedance matching by Off Center Fed dipoles in the Wide L-form. When a vertical or horizontal dipole is bent into a 90 degree L-form, the impedance drops about half.
Two special event stations will be in operation beginning July 1, 2023
The Annual 13 Colonies Special Event will take place on July 1 - 7, 2023. The event honors the original 13 colonies, US independence, active military personnel, and veterans. All amateur radio operators are welcome to participate, including shortwave listeners. Certificates will be available for all participants. Each US state that was one of the original 13 colonies has a special call sign. Al...
DXR Electronics Bits
Ham Radio/Blogs/Asia/India
Electronics and Technical resources from indian amateur radio ham D.Prabakaran with callsign vu3dxr
ARRL Audio News June 30, 2023
ARRL Audio News June 30, 2023
2023 ARRL Field Day Was a Success
2023 ARRL Field Day is in the books and from all indications, it was a success!
Social media is buzzing with stories and photos from around the country.
Results are coming in, and so far, 2,548 Field Day entries have been received. You can see a live, up-to-the-minute count of the entries, comments, and photos on the Field Day Entries Received web page.
Participants have been submitting photos and...
HAM RADIO in Germany Draws International Crowd
The 46th annual International Amateur Radio Exhibition, HAM RADIO, attracted more than 11,000 visitors to Friedrichshafen, Germany, June 23 - 25, 2023.
ARRL The National Association for Amateur Radio®, which has nearly 7,000 international members, sends a small delegation to the convention each year -- greeting members and friends from the global amateur radio community, and networking with oth...
ICOM IC-R75 Review by N9EWO
Radio Equipment/Receivers/Icom IC-R75
Icom IC-R75 tabletop HF communications receiver came onto the market back in 1999 and was taken out of production in late 2015. Frequency coverage is from 30 hz right to 60 MHz. This allows one to catch the 6 Meter amateur band as well.
ARRL Headquarters is Closed on Tuesday, July 4, for Independence Day
ARRL The National Association for Amateur Radio® will be closed on Tuesday, July 4, for the Independence Day holiday. There will be no W1AW bulletin or code practice transmissions. ARRL Headquarters will reopen on Wednesday, July 5, at 8 a.m. EDT.
QO-100 with LimeSDR
Operating Modes/Satellites/QO-100
QO-100 Communications with the LimeSDR Family. LimeSDR can transmit in the expected uplink frequency for QO-100 – which is 2.4GHz – and has a nice reference onboard that makes it relatively stable in frequency aspects
Rainbow Amateur Radio Association
RARA was founded in 1995 by a group of active amateur radio operators from several regions of the United States. Today, the club is international in scope with over 135 members around the world.
Dual-Band X-Frame Shortwave RX Loop Antenna
Antennas/Shortwave
A dual band X-frame wire antenna made using 4 turns for response down to 3 MHz or so, and 2 turns (switched) for response up to around 18 MHz. The loop configurations are tuned using common eBay 365 pF tuning caps.
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