“The Legendary G5RV Antenna” is the topic of the new (August 15) episode of the ARRL The Doctor is In podcast. Listen…and learn!
Antenna
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Antennas and Wind [ ARRL The Doctor is In PodCast ]
Whether you have a simple wire antenna or a large HF Yagi on a tower, the effects of wind are major considerations. The Doctor offers tips to improve... Read more
ROTATABLE DIPOLE , WARC (12/17/30/60M)
You can hardly see this mini 14 foot rotatable dipole across the street! Its tiny 7-foot turning radius fits on the smallest roof — its perfect... Read more
Scorpion SA6-160 – Mobile Antenna 80 to 6 m
A gasketed sealed Polycarbonate enclosure mounted at the base of the antenna sports two shunt coils switched through a relay. An 8 turn shunt c... Read more
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Momobeam MB17 10/15/20/40 m – Yagi Antenna
MB17 10/15/20/40 is every contester’s dream quad-band trap-less yagi with compact design, – high power handling, – large bandwidth thanks... Read more
VHF
An Introduction to the Icom IC-2730E UHF/VHF Dual Band Transceiver
This video provides an introduction to the Icom IC-2730E mobile transceiver that provides VHF/VHF, UHF/UHF simultaneous receive capability as well a... Read more
The Ten Cent Modification You Can Do to Double Your Radio’s Range
by David Spero Some things in life you can never have too much of. But for this article, we’ll concentrate just on radio range/efficiency! There are... Read more
Icom IC-2730
Icom proudly announces the debut of the new VHF/UHF dual band transceiver, IC-2730A/2730E. It is the successor of the long selling IC-2720H ser... Read more
All about repeaters – Ham College 12
All about repeaters. More Technician exam questions. Read more
BCR-220 Repeater – 222-225 MHz – 30 Watts
ntroducing the ComLink™ BCR FM Repeater System by BridgeCom Systems, Inc. The BCR Repeater provides a feature rich, extremely reliable repeater/base s... Read more
Review
MFJ-868B Giant SWR/Wattmeter
MFJ touts the MFJ-868B Giant SWR/Wattmeter as the World’s Largest HF SWR/Wattmeter. The MFJ-868B measures peak, average forward and reflected power an... Read more
MFJ-1263 – MIC / RIG switch, 2 MIC to 2 RIG
MFJ`s new MFJ-1263 Microphone Control Center lets you mix and match any two microphones to any two transceivers. The microphones or transceivers can h... Read more
SDRplay RSPduo Review by Mike Richards ( RadCom )
The new RSPduo from SDRplay was released at this year’s Hamvention in Dayton and provides a dual tuner SDR receiver. Each of the two tuners can operat... Read more
Ailunnce HD1 DMR – Review and how to build a DMR codeplug
“The Ailunce HD1. It’s a DMR Radio. It’s a Ham Radio. It’s both. This promises to be the next evolution in Dual Band DMR handh... Read more
A simple method for Decibel power calculations. Receivers. – Ham College 51
Questions from the General Amateur Radio exam pool part 22. A simple method for Decibel power calculations. Receivers. Read more
Digital Modes
WSJT-X Version 2.0.0-rc1 Released – Download FT8
Go to New Features in WSJT-X 2.0 for a detailed description of its new features. Further technical information (primarily of interest to programmers)... Read more
Reminder: FT8 “DXpedition Mode” Test Set for March 6
The WSJT Development Group will conduct a field test of the new FT8 “DXpedition Mode” this evening, March 6 (in North American time zones). FT8 DXpedi... Read more
Work the World with WSJT-X – Dr. Joe Taylor
“Dr. Joe Taylor, K1JT, author of many of the weak signal digital modes and co-author of the very popular FT-8 mode presented: “Work the Wo... Read more
MFJ-1204 – USB TO RIG SC INTERFACE, W/8-PIN DIN,DATA/ACC PORT
MFJ-1204 Includes radio interface cable (8-PIN DIN) Sign up for the digital revolution and explore a whole new world of amateur radio excitement using... Read more
FT8CALL – The NEWEST HF Digital Mode, Introduction and Demo
FT8CALL “FT8, as we know, has dominated the airwaves for over a year now. Imagine the ability to have keyboard to keyboard ragchew, with... Read more
Antenna
MFJ-226 1-230 MHZ ANTENNA EXPECT TIMES GRAPHIC ANALYZER
MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution. •Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Comple... Read more
25 Element Log Yagi 20-17-15-12-10m
OBLY25-5 25 Element Log Yagi 20-17-15-12-10m Bands 20 / 17 / 15 / 12 / 10 Gain (dBd) * 7,4 / 7,4 / 7,4 / 7,4 / 7,4 Gain (dBi) ** 14,7 /... Read more
HF Antenna In An HOA, Chameleon MPAS 2.0 Is Discrete!!
Chameleon MPAS 2.0 1.8-54 MHz Modular Portable Antenna System IT’S IMPORTANT TO WATERPROOF THE CHA MIL EXT 2.0 BEFORE PERMANENT INSTALLATION Us... Read more
472kHz Antenna Calculator
This tool calculates the antenna capacitance and radiation resistance of small vertical monopoles at 475 kHz. It is by no means a replacement for ante... Read more
How High Should a Dipole Be? A Look at Antenna Modeling
“How high should a dipole be? What happens if it’s too low or too high? We turn to EZNEC antenna modeling software to see that the old rul... Read more
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