50MHz Sound Archive
Internet and Radio/Sounds
This page contains some sound clips of DX on 6m.
Cal Poly Amateur Radio Club achieves 2,000th License Milestone
Student-run Cal Poly Amateur Radio Club (CPARC) at California Polytechnic State University in San Luis Obispo County just hit a licensing milestone. On May 23, 2023, Kyle Wiens became the 2,000th person to pass the amateur radio exam given by CPARC since they started in 2009.
Wiens, now KO6ABA, is a Cal Poly alumnus and CEO of iFixit, a company that produces electronics repair guides for consume...
Amateur Radio Helps Air Show Fly High
More than 40 members of the Nashville Amateur Radio Club, Williamson County ARES®, and Stones River Amateur Radio Club partnered to provide operations support leading up to and throughout the 2023 Great Tennessee Air Show.
On June 10 - 11, 2023, the show was headlined by the US Navy Blue Angels demonstration team. Tom Delker, K1KY, Air Show Communications Coordinator, said that amateur radio ope...
Speaker Wire Delta Loop Antenna for 20M
Antennas/Delta loop
The antenna I built was inspired by a portable delta loop designed by Doug DeMaw, W1FB. Given that I constrained myself to a 50-foot roll of speak wire, I scaled my antenna for the 20M band. Using the formula, 1005 divided by the frequency in megahertz, I calculated a total length of 71 feet (21.6 meters) for the center of the 20M band.
Top Amateur Radio Websites - Issue 2323
My Cheap Hexbeam, DXCC Flags , Portable Coaxial Dipole Flower Pot Antenna, Matching transformers for Beverage, Portable T-Match ATU, Hamword Wordle over Winlink,
Small DuoBand Antenna
Antennas/VHF UHF
This small dual band UHF VHF directional antenna is good choice for portable operations. This antenna is composed by a moxon antenna for the two meters band and it includes two parastatic elements for 70 cm band.
Rabbit Radio Club
Headquartered in Thousand Oaks, California
The VHF UHF Eggbeater Antenna Revisited
Antennas/Satellite
A new, simple way to build the Eggbeater Antenna.
This document introduces a new, simpler way to build the Eggbeater antenna. It also introduces a technically proper way to construct the Eggbeater antenna in order to achieve the best result.
ARRL Audio News June 16, 2023
ARRL Audio News June 16, 2023
The AntennaPi
Technical Reference/Antenna Switch
This is a remote antenna switch I use in my attic to connect transceivers in the basement to multiple antennas in the attic.
The goal of this project is to be able to remotely connect one of the antennas in the attic to the only antenna cable available.
Portable Base Matching Unit for 42 to 48 Foot Verticals
Antennas/Baluns
Medium power BMU (Base Matching Unit) intended for 42 foot to 48 foot vertical, sloper, or Inverted-L antennas.
Updated: FCC ULS Unavailable, Filing Deadlines Extended
Updated 06/14/2023 In an email to all VECs, the FCC indicated that a Public Notice was issued by the Commission on June 13, 2023.
FCC Public Notice DA 23-506: UNIVERSAL LICENSING, TOWER CONSTRUCTION NOTIFICATION, E-106, AND ANTENNA STRUCTURE REGISTRATION SYSTEMS UNAVAILABLE; FILING DEADLINES EXTENDED The notice states that the FCC’s Universal Licensing System (ULS), Tower Construction Notificatio...
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.
|
