“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
FX771 MetroPWR Overview
Technical Features METER METROPWR FX771 Coverage 1.8/55 MHz 160/6mt + VHF/UHF (optional) Measure Power AVG, PeP, dBm, R, Z, X , SWR, ReturnLoss Po... Read more
CHAMELEON ANTENNA Portable HF Antennas
CHAMELEON ANTENNA Portable HF Antennas are made with the finest materials available. They can be used for multiple purposes such as Base Station, Port... Read more
The Mark MKII 3 band (10, 15, 20m)
MK II 2 ELEMENT COMPLETE 3 band (10, 15, 20m) Antenna – 5 band (12m, 17m) 8- DELUXE FIBERGLASS QUAD ARMS – 13FT. 2- CUBEX QUAD SPIDERS-ONE... Read more
NVIS Antennas by Hi-Q Antennas 2-30 MHz
New from Hi-Q Antennas Initially Developed for NASA as a space bound NVIS antenna For ground penetrating HF Radar antenna. It is available for Shipboa... Read more
Electromagnetics, the W8JK Antenna, and the ‘Wow!’ Signal
Electromagnetics, the W8JK Antenna, and the “Wow!” Signal Or, “My friend, the Ohio State Professor, Dr John Kraus, W8JK” Bob HoufK7ZB Antenna enthusia... Read more
VHF
Anytone AT-3318UV-A VHF and UHF
Anytone AT-3318UV-A Features: 5 Watts VHF 4 Watts UHF RX & TX 136-174 MHz & 400-520 MHz Can operate VFO mode & Channel mode at the same t... Read more
Yaesu FT-4XR FM DUAL BAND TRANSCEIVER
Yaesu FT-4XR FM DUAL BAND TRANSCEIVER Range: 136-174, 400-480MHz Antenna Connector: SMA Power Source: 12.6 VDC Nominal, Battery Operated Exclusively F... Read more
Introducing Icom’s 8.33 kHz Airband VHF Radio Range
Icom have a range of VHF airband radios that will meet next year’s 8.33 kHz spacing deadline. The company has a range of 8.33 kHz handheld and panel m... Read more
Wouxun KG-B55 Dual Band 2m/440 Base Station
The Wouxun KG-B55 Dual Band UHF/VHF base station combines the ever popular KG-UV920P-A dual band mobile radio with dedicated a power supply int... Read more
Increase Your Two Way Radio’s Power With The Retevis RT91! 30 Watt Amplifier
This is a portable, lightweight, Wide coverage RF power amplifier for Handheld Radio equipment , proprietary and emerging waveforms. Dual mode for Dig... Read more
Equipment
![160-6 Meter Solid State Linear Amplifier [ TEN-TEC ]](https://qrznow.com/wp-content/uploads/2015/01/JW_004_134_12418frontgreensmall__99762.1405450156.1280.1280-190x122.jpg)
160-6 Meter Solid State Linear Amplifier [ TEN-TEC ]
Generating 100 Watts of output from as little as 5 Watts of input, the Model 418 Amplifier raises the bar for reliable and effici... Read more
MFJ-993B DUAL POWER AUTO TUNER , 300/150W, 1.8-30MHZ
MFJ IntelliTuner Automatic Tuner Automatically tunes unbalanced/balanced antennas . . .Ultra fast . . . New 20,000 memories . . . Antenna Switch . . .... Read more
Ham Radio GoBox Update 2018 by DL1GKK
Ham Radio GoBox by Karl-Heinz Krawczyk “In October 2017 I fulfilled my wish to have a digital amateur radio station as compact as possible in on... Read more
TVTR1 630m Transverter – 472-479 kHz
The Monitor Sensors 630m Transverter enables any Amateur Radio Station, equipped with a conventional HF transceiver, immediate, all mode, access to th... Read more
Tadiran SDR-7200HH
The Tadiran SDR-7200HH is specifically designed for dismounted soldiers, providing them with voice and data communications together with command and c... Read more
App - Mobile
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
RUMlogNG2Go for iOS version 3.5.2 now available
Thomas Lindner, DL2RUM, is happy to announce the availability of version 3.5.2 of his RUMlogNG2Go logger for the iPhone and iPad. RUMlogNG2Go can be ... 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
A New App Visualizes the Radio Waves All Around Us
Radio Waves The modern world is awash in a sea of radio waves — currents of electromagnetic radiation upon which our digital lives depend. What if you... Read more
CommCat 4 for Radio Control and Logging!
CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with... Read more
