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

“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

The Mighty Rhombic, the King of Antennas

April 12, 2018 No comments

“There was a time, back in the 1930s and 1940s, when the rhombic antenna was the king. A remarkable antenna that had phenomenal directivity and... Read more

Engineering the Doublet Antenna

December 31, 2018 No comments

“I made this doublet connector from a piece of 6mm Nylon 66 I had knocking about. Seems easy enough. I just hope the 450 ohm behaves itself and... Read more

Squalo antenna for 6m by PA3HCM

March 03, 2015 No comments

    Introduction – Squalo antenna Adri PA0RDA, a friend of me, is trying to do some DX on 6m for a while now. His antenna position is... Read more

The Fence Fan Dipole (FFD) — A Quick, Easy and Inexpensive Multiband Antenna

March 15, 2016 No comments

“Editor’s Note: Due to the popularity of some of eHam’s older articles, many of which you may not have read, the eHam.net team has d... Read more

Stringing Up Antennas – ARRL’s The Doctor Is In

June 06, 2019 No comments

“Trees make handy supports for wire antennas, but getting an antenna into a tree — and keeping it there — can be a challenge.... Read more

VHF

Alinco DJ-X81 0.1~1300MHz Seg TV voice · EWS receive corresponding receive

January 19, 2015 No comments

Base price (excluding tax): 36,800 yen ● reception frequency range: 0.100 ~ 252.895MHz / 255.100 ~ 261.895MHz 266.100 ~ 270.895MHz / 275.100 ~ 379.895... Read more

Slide Lock for Ham Radios

April 24, 2015 No comments

The ET-850 Locking Slide Mount provides convenience, ease of use and security in a black, powder-coat finish that is both attractive and rugged. The E... Read more

Yaesu announced two new radios are coming to the market! – Yaesu FTM-3207DR and FT-2980R

May 16, 2017 No comments

Yaesu FTM-3207DR and FT-2980R will be available late summer / early fall!  Yaesu FT-2980R 80W FM 2M Mobile Transceiver As its model name suggests, the... Read more

Kenwood TMZ-D504 UHF

January 17, 2015 No comments

High power of the transmitted output 5W Specified low-power automotive operation was difficult in the transceiver, and effective in calling area expan... Read more

Hytera introduces the PD982 handheld radio

November 04, 2016 No comments

  PD982, a new member of the already versatile DMR portfolio of Hytera, brings exceptional audio experience with enhanced features and innovation... Read more

Equipment

ALPIN 200 – LINEAR AMPLIFIER HF 2KW

December 04, 2014 No comments

  ALPIN 200 Linear Amplifier Available from January 2015! Specifications coverage Frequency : All the bands radio amateur 1.8-29,7 MHz  Output Po... Read more

RT-9000E SOFTWARE-DEFINED HF SSB/ISB RADIO

November 24, 2015 No comments

The Sunair RT-9000E is a proven solution in communications applications requiring rugged, reliable, and flexible equipment. This next generation trans... Read more

DXMini Pi-Star Hotspot for Amateur Radio

December 18, 2018 No comments

DXMINI is your gateway to digital HAM radio… Our devices enable your digital radio to communicate over the internet sending your communications... Read more

Introducing the NEW BCS-200 Speaker Mic by BridgeCom Systems:

December 01, 2016 No comments

BridgeCom Systems, Inc is pleased to announce the availability of the BCS-200 Speaker Mic for the amateur and commercial radio markets. Introducing th... Read more

SDR Control panel E-coder

May 08, 2015 No comments

  SDR Control panel E-coder Product Description The E-coder Control Panel is designed to control a SunSDR2 transceiver or ColibriDDC receiver in... Read more

App - Mobile

RUMlogNG2Go for iOS version 3.3 now available

February 03, 2017 No comments

Thomas Lindner, DL2RUM, is happy to announce the availability of version 3.3 of his RUMlogNG2Go logger for the iPhone and iPad.  RUMlogNG2Go can be do... Read more

Rfinder for Visually Impaired on Android

June 13, 2015 No comments

Rfinder Tom W3ZX, a visually impaired ham gives a great demo on Android using TalkBack for the visually impaired. See More: http://www.rfinder.net/blo... Read more

What is Echolink? Ham Radio 2.0: Episode 56

September 01, 2016 No comments

Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more

Free Digital Mode Android App

October 01, 2015 No comments

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

Ham GeoTool APP

November 13, 2015 No comments

A tool all-in-one for the radio amateur in Portugal and Spain created for personal use but at the last JOTA / JOTI, was released at the request of som... Read more