Modeling Common Dipole Variations

“Viewers queried me about what happens when you shorten a dipole by letting the ends hang down, or have to put up a dipole that can’t be in a straight line, and I was also curious about the effect of my aluminum masts on horizontal dipole performance. EZNEC+ to the rescue. The video shows that modified dipoles can work quite well. Subscribe: https://youtube.com/davidcasler“

Review

Review of MFJ-1984MP End-Fed Multi-band Antenna

August 10, 2017 No comments

END FED, 1/2 WAVE, 40-10M, 300W, WIRE ANTENNA FULL HF Coverage, no tuner needed on most frequencies. No long counterpoise, radials or feedline require... Read more

SunSDR2 Pro review by ZL3DW

August 25, 2015 No comments

First impressions First impressions, the radio arrived very well packed. It was double boxed with the radio box inside a standard DHL box. There was a... Read more

Review of Radioddity GD-77 DMR Tier 2 Handheld

August 31, 2017 No comments

Dual Band & Dual Time Slot: VHF 136-174MHz, UHF 400-470 MHZ; GD-77 has both Tier I & II and is compatible with Motorola and other DMR radios.... Read more

VHF

EI3KD works Cape Verde on 144 MHz to set new Region 1 DX record

August 06, 2018 No comments

“On Sunday the 5th of August 2018, Mark Turner EI3KD managed to work D4Z on the Cape Verde Islands off the coast of of Africa on 144 MHz, a dist... Read more

Baofeng DM-9HX – DMR VHF/UHF Dual Band Two Way

September 28, 2018 No comments

Baofeng DM-9HX Why Choose Baofeng DM-9HX? ***Tier II Dual Time Slot,vhf uhf Dual Band, Built-in 3800 mAh Battery, is trying to come out as the... Read more

BEKO HLV-950 – 950 Watts 50 MHz – Solid State Amp

May 22, 2016 No comments

*Photo by KG4AKV Jhon Brier Hamvention 2016 Ohio Designed for Weak Signal, Tropo Scatter, Meteor Scatter, Digital, & Contest Operation! The BEKO... Read more

Equipment

K42C CW Keyboard/Reader Kit

December 20, 2016 No comments

The K42 is the Swiss Army knife of CW keyers, it will provide lots of CW operation and enjoyment. A CW keyboard interface, CW reader, iambic paddle ke... Read more

DX Engineering Radio RF Ground Plane Kits

January 30, 2019 No comments

DX Engineering Radio RF Ground Plane Kits provide an effective method of reducing stray RF pickup by equipment and interconnecting cables. Used under... Read more

Aerial-51 SKY-SDR

August 06, 2017 No comments

GENERAL TRANSCEIVER SPECIFICATIONS Technology Solid State SDR-DSP Direct Conversion Frequencies / Bands 1.8 MHz to 54.0 MHz 160, 80, 60, 40, 30, 20,... Read more

Antenna

Full Size Mega Loop Antenna 6 to 160m

March 30, 2015 No comments

“Nearly two years ago, we decided that we needed a better antenna for all band operation to replace our traditional use of wire dipoles.... Read more

The Antenna SA-680HP covers 10 through 80 meters

January 26, 2015 No comments

The SA-680HP covers 10 through 80 meters with supplied 6 foot whip. • Length retracted: 39” Extended:57” • 3 inch dia... Read more

Discone Antenna

December 19, 2014 No comments

A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. It is usually mounted vertically, with... Read more

Digital Modes

FT8 – Tipping Point for Ham Radio?

November 20, 2018 No comments

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

November 16, 2018 No comments

“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

MFJ-1204 – USB TO RIG SC INTERFACE, W/8-PIN DIN,DATA/ACC PORT

November 13, 2018 No comments

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