Are We Entering a Maunder Minimum? [PODCAST]

Posted date: February 15, 2019in: Propagation

“ARRL The Doctor is In” podcast. Listen…and learn!

We are at the bottom of the current solar cycle, but what are the long-term prospects for improvement?

Antenna

NVIS: Near Vertical Incidence Skywave [ PodCast ]

November 09, 2017 No comments

Sometimes the best direction to send your signal is straight up! Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path... Read more

What is a Bi-Cone Antenna ?

June 15, 2015 No comments

Bi-Cone Antenna he Bi-Cone Antenna is a Dipole Antenna The Bi-Cone antenna is essentially a finite length dipole antenna that exhibits very wide reson... Read more

2018 QST Antenna Design Competition Winners Announced

December 08, 2018 No comments

ARRL has announced the winners of the 2018 QST Antenna Design Competition. “Dozens of entries were received, but only three could win,” said... Read more

Log Periodic Antennas – “ARRL The Doctor is In” podcast. Listen…and learn!

January 03, 2019 No comments

These directional antennas may look like Yagis, but they are quite different. The Doctor explains! Read more

VHF

432 MHz EME with a small antenna

January 16, 2015 No comments

432 MHz EME with a small antenna by Andreas Haefner, DJ3JJ A lot of people would like to do EME but think they need a big antenna for this.... Read more

3D Hologram Hytera DMR Radio Demo

August 18, 2016 No comments

Hytera DMR Radio Read more

RT97 Portable Repeater Power Amplifier UHF

December 30, 2018 No comments

RT97 Portable Repeater – Retevis Multi working power selection, working with the matching power adapter, and also can work under DC12V~24V power... Read more

QYT KT8900 UHF VHF Mini Mobile Radio

May 18, 2015 No comments

QYT KT8900 UHF VHF Mini Mobile Radio + Programming Cable Item number KT8900 General Frequency Range VHF:136-174MHz UHF:400-480MHz Number of... Read more

News

EME SSTV Lunar Landing Commemorative Event Set

July 19, 2019 No comments

Moonbounce enthusiasts are invited to take part in a commemorative Earth-Moon-Earth (EME) slow-scan television (SSTV) party on 23 centimeters, marking... Read more

Centenarian Radio Amateur’s Efforts Helped Pave the Way to the Moon

July 18, 2019 No comments

The Nashville Tennessean newspaper recently featured the story of a 104-year-old ARRL member who contributed to NASA’s effort to put the first humans... Read more

Award for Top Homebrew Designers in Amateur Radio Announced

July 17, 2019 No comments

The ICQ Podcast has announced a partnership to establish an annual “Homebrew Heroes Award” to recognize individuals, groups, or organizations that hel... Read more

Major WSJT-X Upgrade Boosts FT4 into “a Finished Protocol for HF Contesting”

July 16, 2019 No comments

The WSJT Development Group has announced the “general availability” release of WSJT-X version 2.1.0. This major upgrade formally introduces FT4 as a f... Read more

Review

N Female Connector Installation (10mm /.400″ Coax)

July 18, 2019 No comments

Chameleon MPAS 2 NVIS (Near Vertical Incidence Skywave) Antenna

July 18, 2019 No comments

“Part 2 of my look at the Chameleon MPAS 2.0 Modular Portable Antenna System. I set the antenna up in the horizontal NVIS (Near Vertical Inciden... Read more

Overview of the Icom IC-9700 SDR VHF/UHF Transceiver

July 18, 2019 No comments

Following on from our initial ‘Introduction to the IC-9700 VHF/UHF/1200 MHz Base Station SDR Transceiver’ video, we have put together a more in-depth,... Read more

RM Italy MLA100 Amplifier Demonstration

July 16, 2019 No comments

“Mark, W8BBQ show the RM Italy MLA100 amplifier to get over 100 watts from a QRP rig. 160 meters through 10 meters plus 6 meters. Allows you to... Read more