“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
M2 Antenna 1330LP11 – HF Log Periodic
HF Log Periodic SPECIFICATIONS: Model 10-30LP12 Frequency Range 10.0-30.0 MHz Gain 6.8 dBi / 11.6 dBi @ 45′ Front to Back 20 dB Typical Usable R... Read more
JK2040-Hawk – Yagi antenna of 5 elements for the 20 m band and 3 elements for the 40 m band on a 40 foot (12.19 m) boom
The JK2040 Hawk has phenomenal performance characteristics on 20m and 40m. The 38ft boom 20m Yagi has been optimized for high gain and a good F/R with... Read more
Omnidirectional Biquad Antenna for 2.4GHz ( WI-FI )
Directional antennas do have their strengths such as power over distance but sometimes you may need to use a good omnidirectional antenna to produce 3... Read more
4O3A ANTENNA GENIUS 8X2 | SO2R ANTENNA SWITCH WITH TCP/IP
Ranko 4O3A has taken antenna switches into the 21st century! Antenna Genius 8×2 is the first in a new antenna switch line from 4O3A Signature sit... Read more
Radio Direction Finder DF2020T
DF2020T Radio Direction Finder kit requires minimum assembly for 10~15 Minutes The Stealth DDF2020T/GPS is an economical but very sophisticated Dopple... Read more
VHF
Qatar OSCAR-100 Wideband Spectrum Monitor
OSCAR-100 This spectrum monitor, hosted at Goonhilly Earth Station in Cornwall, shows the Qatar OSCAR-100 wideband transponder onboard the Es’ha... Read more
Icom IC-9700 First Impression, Comparision with IC-7400
Icom IC-9700 Specifications General Frequency coverage 144.000–148.000, 430.000–450.000, 1240.000–1300.000 MHz Mode SSB, CW, RTTY, AM, FM, DV, DD Numb... Read more
Turning your smartphone into a 2-way radio – Alianza DxB
Alianza DxB “We are proud to introduce the Alianza DxB which is the latest device created by the Northern New Jersey, family owned technology co... Read more
An introduction to QOscar 100
Noel Matthews, G8GTZ, Dave Crump, G8GKQ and Phil Crump, M0DNY gave a presentation at AGM 2019 on Qatar Oscar 100, the geostationary amateur transponde... Read more
Icom Provide Details of ID-4100E D-STAR VHF/UHF Mobile Radio
Icom Inc has issued preliminary details of a new D-STAR mobile radio called the ID-4100E. The radio will come with the new terminal and access point m... Read more
Equipment
Icom PoC Full Duplex Radio System, Nationwide Coverage Over 4G / LTE Mobile Phone Network
Icom’s new PoC (Push-to-Talk Over Cellular) radio system allows you to communicate with your two-way radio system over a 4G / LTE closed network. Now... Read more
English-Made, Low-Cost GPS-Locked Precision Frequency Reference Now Available in USA
Grand Junction, Colorado – September 15, 2015 – Force 12 CEO Bill Hein was recently Googling for a low cost but ultra-accurate frequency r... Read more
David Clark DC PRO-X Hybrid Electronic Noise-Cancelling Headset
David Clark DC PRO-X Hybrid ENC Technology in a Supra Aural (Rest-on-Ear) Headset Design Leading edge technology and sleek, supra aural design put t... Read more
ANAN-7000DLE 100W HF & 6M Transceiver
The ANAN-7000DLE HF & 6M 100W SDR Transceiver offers top of the line performance is a compact rugged package, it is based on the work of the OpenH... Read more
Introducing . . . New MFJ CWMorse Micro Telegraph Keys
MFJ-566M, $29,95 Red/Black Micro Morse Code Key with aluminum base. Liquid smooth and shielded steel ball bearings. Hardened steel pin rotation and st... Read more
App - Mobile
Free Digital Mode Android App
First Formal Release of AndFLMSG! AndFLMSG is a combination of Fldigi and Flmsg for portable devices running Android. The main objective of this devel... Read more
QTH Locator Droid – Mobile App
The QTH Locator App was developed for HAM Radio use. This is the extended version of “Maidenhead Grid Locator” using Google Maps to show a... Read more
SmartSDR for iOS v3.4.01 Now Available
FlexRadio Systems announces the release of SmartSDR for iOS v3.4.01 is now available for download or update from the Apple App Store. This App require... Read more
Hamradio Line Loss Calculator for iOS devices
Coax Line from Federico Romano, IW2MVI is a simple and fast app that allow you to calculate the loss of your coax line and calculate power output from... Read more
My LoTW – Free app for iOS and Android
My LoTW is a viewer app for ARRL’s Logbook of the World. With My LoTW, you can: – View all the QSOs you have submitted to LoTW. –... Read more
