70cm Eggbeater Antenna
Antennas/Satellite
Building a LEO satellite ground station, and eggbeater antenna for the 70cm band
FCC Universal Licensing System Applications Are Unavailable
The FCC Universal Licensing System (ULS), which includes Electronic Batch Filing (EBF) used by VECs for new and upgrade license submissions and club license applications, Application Search, License Search, License Manager system used for filing applications directly with the FCC, Tower Construction Notification System, E-106 System, Antenna Structure Registration Online Filing and searches, TO...
Legislation to Remove Private Land Use Restrictions on Amateur Radio Introduced in Congress
Homebrew Z-Match Transmatch
Antennas/Tuners
For this project, I decided to try my hand at building a Z-Match tuner from scratch. This type of tuner has been around for a while. While the Z-match can take on several variations, what distinguishes it from other circuits is that it is a resonant circuit that uses a fixed inductor.
EggBeater Antenna for VHF UHF
Antennas/Satellite
This antenna was conceived mainly for high-speed digital transmission via satellite. The antenna is made of two full waves loops , mounted at right angles to each other. Then coupled together, 90 degrees out of phase over a horizontal circular reflector. With this configuration the antenna is omni directional and circularly polarized.
Proclaiming Field Day!
With 2023 Field Day fast approaching, many amateur radio operators are busy scouting their locations and getting their equipment ready for the big event.
State Sections and individual clubs are also working on publicizing Field Day and obtaining proclamations from local and state governments. It's a great way to help get clubs noticed and to draw attention to amateur radio.
Ohio Governor Mike DeW...
Fix Baofeng UV5R+ Dead Audio
Radio Equipment/VHF-UHF Handhelds/Baofeng UV-5R
Fix the no-mic problem with the Baofeng UV5R+. It may happen the carrier wave is there, but there is no modulation.
China radios SWL
Ham Radio/Blogs/Asia
This blog is to talk of radios in AM on SW from China and TX and RX made in Asia
Chokes and Temperature changes
Antennas/Feed Lines/Choke
The influence of temperature changes in Common Mode Chokes. To get an indication of the impedance behavior when the core temperature changes, the author tested a CMC by heating it with a hairdryer, and measuring its temperature with an infrared thermometer. When the CMC temperature rises from 30C to 90C, the frequency of maximal impedance shifts down from ca.10 MHz to ca.7.2 MHz, or by a factor 1.4.
Top Amateur Radio Websites - Issue 2322
Home made multiband MOXON, Antennas for HOAs and Apartments, VARAc, Mini-Whip Active Antenna, Homebrew 3CX3000A7 Amplifier, Radio Station WWV, CHU,
ARRL Audio News June 9, 2023
ARRL Audio News June 9, 2023
A600 Power Amplifier Project
Technical Reference/Amplifiers/HF Amplifiers
This is a power amplifier project for a RF 600W 1.8 MHz to 70 MHz linear amplifier including a Low Pass Filter. Projects includes schematics, pictures, PCD design, fans details, note on PA ferrite chokes and assembling instructions
2023 SEA-PAC: Successful ARRL Northwestern Division Convention
“Surf a Radio Wave” was the headline for the Pacific Northwest's largest amateur radio convention, SEA-PAC, which held its 41st event, June 2 - 4, 2023, in Seaside, Oregon. The convention hosted the 2023 ARRL Northwestern Division Convention. ARRL Education and Learning Manager Steve Goodgame, K5ATA, delivered an inspiring keynote address at Saturday’s banquet. Goodgame spoke about current and f...
NOAA Predicted Sunspot Number
Propagation/Propagation Forecast
Predicted Solar Cycle: Sunspot Number And Radio Flux Values with Expected Ranges, sources are Penticton, B.C., Canada, S.I.D.C. Brussels
Gear up for 2023 ARRL Field Day!
2023 ARRL Field Day is just 3 weeks away, on June 24 - 25. It's the most popular on-the-air event held annually in the US and Canada.
More than 40,000 hams throughout North America set up temporary transmitting stations in public places to demonstrate ham radio's science, skill, and service to our communities and our nation. It combines public service, emergency preparedness, community outreach,...
JRC NVA-88 Modification
Technical Reference/Audio
Adding 2 RCA inputs, 1 high impedance filtered audio output RCA 3, 3 HIGH PASS filters, 3 LOW PAS filters to the JRC NVA88 Speaker
ARRL Foundation Accepting Applications for Grants in June
The ARRL Foundation is now accepting grant applications from amateur radio organizations for eligible amateur radio-related projects and initiatives, particularly those focused on educating, licensing, and supporting amateur radio activities. To grow amateur radio's future, youth-based projects and initiatives are especially encouraged. The ARRL Foundation grants program accepts proposals on a ...
Improving the audio on the ICOM IC-27
Technical Reference/Audio
Make an otherwise fine radio even better, change one resistor and one capacitor in the audio section
Licensee Hit With $24,000 Fine for Jamming Net, Failure to ID: FCC
An investigation by the Federal Communications Commission (FCC) results in a large fine against a California amateur radio license holder. A Notice of Apparent Liability Forfeiture (NALF) for $24,000 has been filed against Phillip J. Beaudet, N6PJB, of Burney, California. According to the filing, the penalty is for Beaudet “willfully and repeatedly interfering with the radio communications of t...
ARRL Hudson Division has New Vice Director
Ed Wilson, N2XDD, of Shirley, New York has been appointed Vice Director of the ARRL Hudson Division by ARRL President Rick Roderick, K5UR.
Wilson succeeds Nomar Vizcarrondo, NP4H, who was appointed Director of the ARRL Hudson Division in March. Wilson will serve in the position for the remainder of the 3-year term that ends December 31, 2024.
Having developed an interest in radio as a child, Wils...
Outdoor 80m/40m bands Magnetic loop antenna
Antennas/Magnetic Loop
No matching adjustments needed. Directly perfect match to 50 Ohms using a remotely switched wideband transformer
Top Amateur Radio Websites - Issue 2321
Drive-On Antenna Mast For POTA, Shortened 40 meter Vertical for POTA SOTA, The Infamous Attic Dipole, Solar Panel and Ham Radio, RF Toroid Calculator, Stop RFI from Solar PV Systems, CY0S Log Online,
Active 3-30 MHz Hula-Loop Antenna for Shortwave
Antennas/Shortwave
This active antenna for the shortwave band provides surprising performance, even indoors. As the name implies, the main loop is made from a Hula-Hoop with the metallic paint stripped off and a single turn of 14AWG copper wire inserted inside the hoop.
HF Radio Propagation Forecast
Propagation/Beginner's Guide
This page offers radio amateurs (experienced and beginners) a useful overview and tutorials on HF propagation conditions. Here you will find basic and advanced explanations, as well as practical methods, charts, maps, models, real-time measurements, assessments, comparisons, references, and an index.
ARRL Audio News June 2, 2023
ARRL Audio News June 2, 2023
ARRL Elected to Serve on SAFECOM
ARRL The National Association for Amateur Radio® has been elected to serve on SAFECOM®. SAFECOM is a group of national thought leaders and officials within the emergency communications and response space that works to set standards used at every level. The program is managed by the Cybersecurity and Infrastructure Security Agency (CISA), an agency of the US Department of Homeland Security. SAFE...
Museum Ships On-the-Air Weekend
If you like ships and are an amateur radio operator, 100 ships will be on the air from June 3 - 4 for the annual Museum Ships Weekend event.
Organizers stress that this is not a contest, but a fun event that begins at 0000Z on June 3, 2023, and runs through 2359Z on June 4, 2023.
While operation on any amateur frequency is allowed, most ships will be operating in the general portion of the bands....
Some secrets of Common Mode Chokes revealed
Antennas/Feed Lines/Choke
This is a small collection of K9YC info and my experiences. Problems by feed lines of 1/2 lambda length. CMCs in transmitting and receiving systems. Antenna unbalance, Maximal allowed power, Choke winding tips.
“He Touched So Many Lives” Chip Margelli, K7JA (SK)
The airwaves are markedly dimmer this week, social media is filled with heartfelt tributes, and industry leaders are mourning. Longtime fixture of amateur radio Charles “Chip” Margelli, K7JA, passed away after a brief illness. Margelli was an ARRL Life Member. “The light and love of my life is gone,” Margelli’s widow Janet, KL7MF, posted on Facebook. “He enjoyed 60 wonderful years as a ham and 4...
Estimated International Sunspot Number
Propagation/Sunspots
The estimated international sunspot number (EISN) is a daily value obtained by a simple average over available sunspot counts from prompt stations in the SILSO network.
Oregon Tualatin Valley Amateur Radio Club
Affiliated with the American Radio Relay League in the Oregon Section of the Northwestern Division
Short receiving loop antenna
Antennas/Receiving
This page is a project for a small loop antenna for reception of short wave broadcasting.
It is in Portuguese and contains pictures and schematics to build your own antenna
FT-817 internal battery power Fix
Radio Equipment/HF Transceivers/Yaesu FT-817
If your FT-817 has stopped powering up from the internal battery but works from external power, then maybe the internal battery fuse has blown.
There is a small PCB mounted fuse to protect the battery and radio. This fuse can blow, if it does your radio will not work from battery power.
This page will describe how to test the fuse and describe how to make a repair.
Radioquebec.net
Radioquebec.net Ham Radio Super Club. 146.790 - Node: 4796 The heart of Montreal
Harford County Amateur Radio Emergency Communications
Trained amateur radio communicators under ARES, RACES and Skywarn serving Harford County, Maryland communities
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