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HF Propagation


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Friends News - The DXZone.com

The DXZone.com Amateur Radio Internet Guide

Latest articles, reviews and links posted to The DXZone.com, an amateur radio, cb radio, scanning and shortwave radio, reference site

Top Amateur Radio Websites - Issue 2016  View ?

TriBand Moxon Antenna for 6m 4m 2m, Antena KIT, A comparison of 40 meter beam antennas, 6 Meter Quad Turnstile Antenna, 6 Meter Band Moxon Style Antenna, J-Pole Antenna for 50 MHz, VE2DX Electronics, J-pole antenna Calculator, The Ugly MacGyver 6 meter J-pole Antenna, 50MHz / 6m J-pole Antenna by VK4ADC

... / ...

(01/01/1970 @ 01:00)
Top Amateur Radio Websites - Issue 2015  View ?

Mini Satellite-Antenna Rotator Mk1, Building the 6 Meter Moxon Antenna, Soundcard Levels for Digital Modes, Tino Funkshop, Digital Mode General Operating Tips, Hands Free - Radcom Labs, Collins KWM-2 Modification
(01/01/1970 @ 01:00)
IOTA CONTEST 2020  View ?

25th - 26th July 2020 12:00 - 11:59:59 UTC RSGB IOTA Contests promotes contacts between stations in IOTA island groups and the rest of the world
(01/01/1970 @ 01:00)
Top Amateur Radio Websites - Issue 2014  View ?

The truth about ferrites, Mini Satellite-Antenna Rotator Mk2, QRM.guru, Solar Cycle Progression, MiniKits, Strictly Ham,
(01/01/1970 @ 01:00)
CQ WW VHF 2020  View ?

CQ WW VHF Starts: 1800 UTC Saturday, July 18, 2020 Ends: 2100 UTC Sunday, July 19, 2020
(01/01/1970 @ 01:00)
ICOM IC-R20  View ?

IC-R20 by Icom. Wideband Receiver Professional radioreceiver, allow double receiver, from HF to Microwave, digital recorde, DTCS, Memories and 11 hours countinuous reception.
(01/01/1970 @ 01:00)
Hamtech  View ?

Manufacturers/Parts and Surplus
HAM-made engineering products supplies and produces coaxial relays, antenna switches, sequencers, roller inductors, variable capacitors, low noise preamplifiers, RF power rotary switches and coil bodies.

... / ...

(01/01/1970 @ 01:00)
WiFI vSWR Meter  View ?

Technical Reference/SWR Meters
When building antennas for the Wifi band (Like the 8dBi omni), a need for an easy way to check the antennas arose. A Voltage Standing Wave Ratio (VSWR) meter useable at the 2.4GHz band is however, hard to find.

... / ...

(01/01/1970 @ 01:00)
80m Top Loaded Vertical Antenna  View ?

TLV80 is model of a Top Loaded Vertical Antenna is doing a good job for DX on 80 m band. A version for 80m-30m is provided.
(01/01/1970 @ 01:00)
6 Elements Yagi Antenna on 50 MHz  View ?

Antennas/6M/6 meter Yagi Antennas
This is a design based on the QuickYagi 4 software by WA7RAI with some changes for practical reasons. The beam uses 6.5 metres of standard 25mm square boom, 12mm diameter elements without tapers. The actual boom length used is 6.3 metres and all parts are readily available.

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(01/01/1970 @ 01:00)
Notable Patents on Antenna Design  View ?

Operating Aids/History
Patents of most popular antenna models including Zeppelin Antenna, Beverage Antenna , Franklin Antenna , Yagi-Uda Antenna , Sterba Antenna , Rhombic Antenna , Turnstile Antenna , Folded Dipole Antenna , Coaxial Antenna , Slot Antenna , Discone Antenna , Quad Antenna Element , Log Periodic Antenna , Swiss Quad Antenna

... / ...

(01/01/1970 @ 01:00)
23cm 1296 MHz Transverter  View ?

Technical Reference/Transverters
A homemade 23 cm transverter project with several building steps and pictures
(01/01/1970 @ 01:00)
2m Slim-Jim Aerial using Ladder-Line  View ?

Antennas/Slim Jim
The Slim-Jim is a bit of a classic - building one is almost certainly a rite of passage and you will be glad that you did: It is easy to make, fairly easy to tune and rolls-up for transportation.
(01/01/1970 @ 01:00)
How propagation works on VHF Bands  View ?

Propagation/Sporadic E
Thunderstorm effects on sporadic E propagation, Very long distance propagation in the 144 MHz band, Analysing the number of skips in multiple hop propagation
(01/01/1970 @ 01:00)
FieldLog Android Logger  View ?

FieldLog is an Android phone application for recording QSO during holidays, nature trips, FloraFauna, IOTA, SOTA, Castle, Lighthouse.
(01/01/1970 @ 01:00)
Field Day Operations in Australia  View ?

Operating Modes/Portable Operations
A page with lots of pictures of John Moyle Field Day 2012 operating from 80 meters to 70 centimeters
(01/01/1970 @ 01:00)

Last import : 09/08/2020 @ 19:22

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