“Antenna Rotators” is the topic of the new (August 2) episode of the “ARRL The Doctor is In” podcast. Listen…and learn!
Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like!
Every 2 weeks, your host, QST Editor-in-Chief Steve Ford, WB8IMY, and the Doctor himself, Joel Hallas, W1ZR, will discuss a broad range of technical topics. You can also e-mail your questions to doctor@arrl.org, and the Doctor may answer them in a future podcast.
Enjoy “ARRL The Doctor is In” on Apple iTunes, or by using your iPhone or iPad podcast app (just search for “ARRL The Doctor is In”). You can also listen online at Blubrry, or at Stitcher (free registration required, or browse the site as a guest) and through the free Stitcher app for iOS, Kindle, or Android devices. If you’ve never listened to a podcast before, download our beginner’s guide.
Antenna
A Super J-Pole Antenna for the 4m (70Mhz)
A Super J-Pole Antenna for the 70Mhz (4m) Amateur band. The Vortex ‘Super J-Pole’ Antenna consists of a five eighth wave vertical radiator, a half wav... Read more
MONSTER YAGI FOR 20M
A 5 element wide spaced yagi for the 20m long path to Europe was installed at ZL6QH in May 2005. A photo of this “monster” antenna... Read more
New log periodic array from InnovAntennas with parasitic element enhancement
100MHz to 750MHz Log Periodic Array Description InnovAntennas design and build Log Periodic Arrays for any bandwidth and for any purpose. Our LPDA... Read more
Triband Receiving Loop for 160/80/40m by AC0C
“Noise is the constant companion of the stealth antenna warrior. And as the 160m season heats up this winter, the noise level of the house with... Read more
HF Omniangles HF-28 ( 10 Meters )
HF Omniangles Our HF line of horizontal omnis are a bit different than the VHF and UHF models in that they aren’t as excellent from an omnidirec... Read more
VHF
AnyTone AT-D878UV PLUS with Bluetooth and PTT remote
This is a demonstration of the new version of the AnyTone AT-D878UV PLUS with Bluetooth and PTT remote. Read more
New release of portable transceiver IC-705 that covers all modes including DV (digital voice) from HF to 430MHz band .
IC-705 Product name / model name Amateur Radio HF / 50/144 / 430MHz <SSB / CW / RTTY / AM / FM / DV> IC-705 Suggested retail price 124,800 yen +... Read more
VOXTER UV-W8 VHF and UHF
VOXTER UV-W8 Technical Parameter Model/ General VOXTER UV-W8 Frequency range VHF 136-174MHz UHF 400-480MHz Channel Capacity 2X128 Channe... Read more
Ham Radio Tutorial – 2 Meter Repeaters
Ham Radio Tutorial – 2 Meter Repeaters Read more
ISS 437.800 MHz cross band FM repeater activated
At 01:02 GMT on September 2 a cross band FM amateur radio repeater with a downlink on 437.800 MHz was activated on the International Space Statio. The... Read more
Equipment
L3Harris Falcon III® AN/PRC-117G(V)1(C) Multiband Networking Manpack Radio
The L3Harris AN/PRC-117G delivers breakthrough wideband data speed and legacy narrowband performance in a form factor 30% smaller and 35% lighter than... Read more
TARGETuner Mobile Antenna Management System
Description TARGETuner Mobile Antenna Management System provides a controller with intelligent automatic controls for the tunable mobile screwd... Read more
PiHPSDR Controller – Apache Labs
The PiHPSDR Controller is a stand-alone interface for the ANAN/OpenHPSDR Hermes SDRs, it is ideal for mobile applications and for users who prefer phy... Read more
NEW LNA + FILTER FOR RADIO ASTRONOMY HYDROGEN LINE OBSERVATIONS RELEASED BY NOOELEC
NooElec have recently released a new LNA + filter combo called the “SAWbird+ H1 Barebones” which significantly lowers the entry bar for ne... Read more
Icom IC-R8500 Communications Receiver
Icom IC-R8500 Wide Frequency coverage. The IC-R8500 covers a wide frequency range continuously from 0.1 to 2000 MHz,* with 10 Hz resolution, while mai... Read more
App - Mobile
GNU RADIO CODE FOR ANDROID NOW RELEASED
Supports the most recent version of GNU Radio (v3.8). Supports 32-bit and 64-bit ARM architectures (i.e., armeabi-v7a and arm64-v8a). Supports popular... Read more
Top 5 Ham Radio App
Ham Radio App If you’re a member of ARRL, the national association for Amateur Radio, install this app and have QST, the ARRL membership journal... Read more
Wizkers:Radio APP
Wizkers:Radio is a controller for various Amateur Radio equipments. At the moment, it supports several Elecraft radios and amplifiers, as well as the... Read more
What is Echolink? Ham Radio 2.0: Episode 56
Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more
Morse code Ringtone Generator by M1RGZ
“This page converts text into a morse code ringtone playable on most mobile phones. If your phone can play ‘polyphonic’ or ‘po... Read more
