Jim Heath W6LG talks about antenna gain using a light bulb. He shows a simple yagi and 2 brands of antenna rotator
Antenna
8 EL. DELTA LOOP 144 MHz (144DL8) – SMARTECH
DELTA LOOP: THE ANTENNA WITH THE BEST GAIN/BOOM LENGHT RATIO SPECIFICATIONS ► Gain: 19.1 dBi 30.4 dB Boom 2.90 m ► F/B: 30.4 dB F/R ► Frequency... Read more
W1ZR Wins August QST Cover Plaque Award
The winning article for the August 2016 QST Cover Plaque award is “Antenna Analyzers — the Basics” by Joel R. Hallas, W1ZR. The QST Cover Plaque... Read more
Antenna Circular Polarization
“Space communication has forced the use of Circular polarization. The fundamental advantage of circular polarization is that all reflections cha... Read more
Active Antenna Amplifier (model AAA-1C)
Active Antenna Amplifier The Kit The amplifier kit consists of the following parts: Amplifier board (mounted and tested) Control board (mounted and te... Read more
Engineering the Doublet Antenna
“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
Equipment
![Harbor Freight Solar Panel for Ham Radio [ Video ]](https://qrznow.com/wp-content/uploads/2016/05/8-2-13solar-006-190x122.jpg)
Harbor Freight Solar Panel for Ham Radio [ Video ]
As an easy introductory solar project I purchased Harbor Freight’s 45 watt solar kit for my ham radio use. 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
A-iPower Portable Generators SUA8250E
Portable Generators Get power where you need it using one of these A-iPower portable generators. They are driven by a compact, high performance, air-c... Read more
Little Boy — An LDMOS HF Amplifier
Little Boy — AN LDMOS HF Amplifier by W6KANI recently watched the movie Fat Man and Little Boy, a 1989 great movie about the Manhattan project a... Read more
50 Ohm PROFESSIONAL COAXIAL CABLES
COAXIAL CABLES Cables for transmission and reception for both professional and amateur 50 Ohms. The low loss and low SWR factor (SRL) make them unique... Read more
VHF
Mirage Amplifier B-320-G VHF, HT/MOBLE AMP, 200W OUT, 144-148 MHZ
Amplifier, HT, VHF, Solid State, 144-148 MHz, 3/50 W In, 200/200 W Out, UHF Fem, SO-239, 13.8 Vdc, 25 A, Each Add this amp to your 2 Meter HTor mobile... Read more
Wouxun KG-UVD1P
Wouxun KG-UVD1P Description of Features 1. 1750 Hz Burst Tone 2. DTMF Encoding Function 3. Working Mode :vhf tx-uhf rx or uhf tx-vhf rx can be set fre... 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
JUENTAI JT-K10A VHF/UHF 10 Watts
JUENTAI JT-K10A JUENTAI JT-K10AT Function: 01. Outpower: 10W 02. Adopting newest polymer Li-ion battery 03. Adopting imported PC material in case t... Read more
The ARRL Repeater Directory (Pocket-size)
The ARRL Repeater Directory (Pocket-size) The best directory of frequencies for repeaters around the country!The ARRL Repeater Directory includ... Read more
Digital Modes
FT8 Performance Secrets
“Neil investigates what really matters when you are aiming for the ultimate performance with FT8 and other digital modes. He demonstrates and ex... Read more
STEVE ANDREW’S SPECTRUM ANALYSER SOFTWARE
“We are pleased to announce the availability of V1.0a of the Spectrum Analyser software developed by Steve Andrew specifically for the RSP line... Read more
FT8 – Tipping Point for Ham Radio?
This is a view from NASA of the sun today, October 9, 2018, and I am making 10m DX contacts one after another. Zero sunspots but working DX on... Read more
JS8Call 0.9 Release notes
“Hi Folks, Thanks for staying patient with me on this one. Build servers were being weird today! Happy to bring you release with simple features... Read more
