“This is the ultimate jewelry for your dream ham shack! The Geochron Digital 4k UHD gives viewers beautiful displays of the Earth with the sunrise-sunset rendered in real-time through a small computer that plugs directly in to your TV via HDMI. The size of your display is only limited by the size of your TV, as you take in the terrestrial movement of the Earth’s orbit in sync with the Sun. The Geochron Digital 4k UHD displays a full-featured Geochron World Clock on any 4k TV, with every mapset and lighting option available in the famous mechanical clock but at a fraction of the cost. Now in the digital format, users customize markers on the map, and recieve (with internet) real time updates. • Lifetime updates for five mapsets. • Live location of the International Space Station, updated every 15 seconds. • High Speed demonstration mode. One year in 15 seconds! • Eight Locations Pins you can place anywhere on the map. • Static Overlays, showing: Earth at Night, major shipping routes and major flight routes (new! as of 05/2018)”
Antenna
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“Big Wire Antennas” [ ARRL The Doctor Will See You Now! ]
“Big Wire Antennas” is the topic of the new (November 21) episode of the ARRL The Doctor is In podcast. Listen…and learn! Sponsored by DX Engine... Read more
Vertical Dipole Array by OH1TV
An easy to build antenna for seaside locations 17m and 15m versions were used at 9M0O DX-pedition in 2016 Some notes • Wire lengths R and D are... Read more
A New Way to compare HF antennas
Michael G0POT reviews WSPRlite with DXplorer Wondering how well your antenna works? WSPRlite with DXplorer will tell you… The WSPRlite is a spe... Read more
144 MHz Halo Antenna
Construction and Analysis of a Low Cost Omnidirectional Horizontally Polarized Antenna for 144 MHz by Dr. Carol F. Milazzo, KP4MD (posted 23 May 2012)... Read more
Slim Jim Antenna Project
Slim Jim Antenna The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable “gain” and this is concentra... Read more
Building 2 Meter Vertical Moxon
Building a 2-Meter Moxon by Stephen Dunifer Source´S : http://www.moxonantennaproject.com/ and VE3STL Read more
VHF
Jamboree on the Air (JOTA) Stations Encouraged to Register and File Post-Event Reports
Scouting’s Jamboree on the Air (JOTA) officials are asking JOTA 2016 participants not only to register for this year’s event, but to follow up with a... Read more
Unbox the Radioddity GD-77
Unboxing the not-yet-released Radioddity GD-77, their “try again” DMR Tier 1/Tier 2 radio. I describe many of the promised features. It... Read more
Baofeng DM-1801 digital dual-channel walkie-talkie DMR Tier1 Tier2 Tier II Dual time slot digital radio Compatible with Motorola DM-860
Baofeng DM-1801 Baofeng DM-860 Dual Band Dual Time DMR slot digital / analog two way radio 136-174 / 400-470 MHz 1024 Channels Ham Walkie Talkie.1. Ba... Read more
IC V86 Review with George Thomas and Ray Novak
The IC-V86 gives you more audio, more RF power, more coverage and more battery capacity in a compact, MIL-STD portable. With 1.5W of receive audio pow... Read more
Getting Started with the FM Satellites
Getting Started with the FM Satellites If you can program split-frequency memories in your dual-band radio, or your dual-band radio has two VFOs, you... Read more
Qatar OSCAR-100 Wideband Spectrum Monitor
OSCAR-100 This spectrum monitor, hosted at Goonhilly Earth Station in Cornwall, shows the Qatar OSCAR-100 wideband transponder onboard the Es’ha... Read more
Equipment
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
OM4000 HF POWER AMPLIFIER – 4KW
GENERAL DESCRIPTION OF THE OM4000 HF POWER AMPLIFIER The linear amplifier OM4000 HF is designed for all short wave amateur bands from 1.8 till... Read more
XTRX – A high-performance SDR in a mini PCIe form factor
A high-performance SDR in a mini PCIe form factor Features & Specifications RF Chipset: Lime Microsystems LMS7002M FPRF FPGA Chipset: Xilinx Artix... Read more
Introduction to the RSPduo Dual tuner 14-bit 1kHz – 2GHz SDR
The RSPduo is a high performance dual tuner SDR. Housed in a high quality steel enclosure, each tuner can operate individually anywhere between 1 kHz... Read more
How To Build A QRP Dummy Load by K7AGE
“In this video, I build a simple QRP Dummy Load that is good for up to 20 watts. It even has test point that you can use a meter to measure the... Read more
Digital Modes
FT8DMC 3rd Anniversary-Activity Days 2020
To commemorate our 3rd anniversary, special event stations will be on air during the FT8DMC Activity Days from 1. to 31. July 2020. All stations will... Read more
K1JT , JOE TAYLOR HINTS AT POSSIBLE NEW MODE!
In a post to the WSJT-X email group today, Joe Taylor K1JT hinted at some ongoing experimentation of a new digital mode with sub-modes. His post was a... Read more
WWSA GACW Contest Rules.
WWSA GACW I – Dates Second weekend of June of every year. From Saturday 15.00 UTC until Sunday 15.00 UTC. 24 hours period. II – Goal To co... Read more
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