[*] [-] [-] [x] [A+] [a-]  
[l] at 9/21/19 10:55pm
Software/Weak Signal
Amateur Radio enthusiasts who are interested in the LF and MF bands may be familiar with WSPR and WSJT JT9. Used as a propagation probe or beacon, WSPR allows very weak signals to be detected, frequently as weak as -27dB SNR.

[Author: author@dxzone.com]

[*] [-] [-] [x] [A+] [a-]  
[l] at 9/20/19 10:55pm
DX Resources/QSLing/QSL Galleries
A collection of QSL cards from and old operator, Art J. Cook, VE4KZ, who lived in Calgary Alberta, that contained some from the far north of Canada.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/19/19 11:47pm
Multi-band End-Fed Antenna, The End-Fed Half-Wave Antenna - Presentation, mini Ring-Core-Calculator - Calculate windings on ferrite cores, Magnetic Loop Antenna Calculator Spreadsheet, Balcony Mounted Buddistick Antenna by KP4MD, A Surprisingly Accurate LC Meter by VK3BHR, 1A0C Online Log - 2019, PS8ET Amateur Satellite Operations, The Antenna Torque Calculator, Guide to decode SSTV with RaspberryPi and RTL-SDR

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/19/19 11:47pm
Software/Weak Signal
FSQ is a Fast Simple QSO mode designed specifically for HF. It works well under NVIS and sunrise/sunset conditions on the lower bands, and also works well for short skip and grey-line on higher bands and can be used also on VHF FM.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/18/19 11:15pm
DX Resources/Sked
A multi sked portal offering sked spots grouped by CFO CW Practice CW Academy Development Digital FISTS Down Under FISTS Scouting LoTW/eQSL MARS NAQCC NRR Other Images POTA Ragchew Satellite SKCC TBDXC VHF/UHF

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/17/19 11:24pm
Operating Modes/Morse code/Learning Morse Code
This online web application allows you to train the decoding of Morse code by copying random QSO sentences that can be looped or even mixed.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/16/19 11:01pm
How to get your ham radio license, licence types, exams, study guides and requirements to pass amateur radio exams and get your licence.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/16/19 11:01pm
Technical Reference/Receivers
The build was an experiment to see if a tube receiver could be stable enough to receive digital shortwave radio broadcasts. The tube acts as both an oscillator and mixer, so the receiver is a type of direct conversion receiver.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/16/19 11:01pm
Antennas/EH
Hairspray-can EH Antennas for shortwave and online programs. Small magnetic (H) antennas (Loops) have a good efficiency for the upper bands (20/15/10 meter band) and also in contrast to E-antenna a defined radiation direction.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/15/19 11:20pm
Ham Radio/Demographics
Annual poll for radio amateurs - the good, the bad, the ugly! This is an annual survey conducted among the online community, and it represents the status of amateur radio. The authors ask to hams several questions, from the most used operating modes, to the typical ham radio lifestyle habits.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/13/19 11:04pm

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/12/19 11:21pm
Antennas/Quad
An interesting page about Quad antennas. Modelling QUAD antennas, comparing quad antennas to yagi antennas. Information on QUAD Antenna tuning and home brewing with help on calculating dimensions and tuning.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/12/19 11:21pm
Shopping and Services/Kits and Components
Details on projects by WA3TFS published in QST magazine over the past few years. Includes an online shop with several ham radio kits, circuit boards, simple SDR transceivers

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/12/19 11:21pm
Antennas/Antenna Calculators
Cubical Quad Antenna On-line Calculator helps on defining the size of each element and spreader. Simply give the resonating frequency and it will calculate size of each element.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/12/19 1:41am
Antennas/Antenna Calculators
Cubical Quad Antenna Online Calculator helps on defining the size of each element and spreader. Simply give the resonating frequency and it will calculate size of each element.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/11/19 11:15pm
F5RDS remote antenna tuner, The Great Ham Radio Desk Project, Homemade Magnetic loops antennas by F5RDS, QRPparts, RADIG Hombrew Software Defined Radio Project, Ham radio shack desk project, Omega Radio, 3 element Yagi Antenna On-line Caluclator, Score Distributor - Ham Radio Contest Score Forwarder,

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/11/19 11:15pm
Antennas/Antenna Calculators
Cubical Quad Antenna Online Calculator helps on defining the size of each element and spreader. Simply give the resonating frequency and it will calculate size of each element.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/11/19 11:15pm
Technical Reference/Vector Network Analyzer
The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/11/19 11:15pm
Antique Radios/Repair and Restoration
This page details the restoration of an early production Collins 75A-4 Amateur Band Receiver that had previously been vandalized.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/10/19 11:17pm
Antique Radios/Museums
Bergendorffs Radiomuseum Radio Collection, images and technical data on various devices that are in the collections.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/10/19 11:17pm
Shopping and Services/Electronic Components
ICChip, as an electronics-guide website, provides you with the industry professional electronic components data sheets, parameters, packaging and brand manufacturer information, as well as product-risk assessment and control, other environmental conflict mineral procurement and reporting solutions. Hope these semiconductors and electronic components data in each document can solve your problems and meet your requirements.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/10/19 11:17pm
Shopping and Services/Regional/Europe/Germany
Daki Funkversand is a German based web shop for Amateur- & CB-Radio equipment. Our shop includes products such as radios, antennas, equipment, PMR, LPD & Freenet.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/9/19 11:05pm
Technical Reference/Amplifiers/VHF Amplifiers
TE Systems 0510G 50 MHz meter amplifier set up for 10 watts in and 170 watts out.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/8/19 10:55pm
Technical Reference/Test Equipment
Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with reduced sensitivity).

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/6/19 11:21pm
Radio Equipment/HF Transceivers/Icom IC-705
Early pictures and presetation of the Icom the IC-705, new all bands all modes QRP transceiver introduced at Tokio HamFair on August 31st September 1st 2019.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/6/19 11:21pm
DX Resources/DX Peditions/2019 DXpeditions
by SN9J, SP6CIK, SP6OJK, SP9FIH, SP9FOW, SP9HVW 2019 Sep 2 - 2019 Sep 15

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/6/19 11:21pm
DX Resources/Logs
Online Log of the Polish DXpedition to Kyrgyzstan - EX0QP 2019 via clublog

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/5/19 11:17pm
Head to Heat comparison review - ICOM IC-7610 vs Yaesu FTdx-101D

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/5/19 11:17pm
Operating Modes/Internet Linking/AllStarLink
AllStarLink is a network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via Voice over Internet Protocol. AllStarLink runs on a dedicated computer (including the Rasperry Pi) that you host at your home, radio site or computer center. It is based on the open source Asterisk PBX running our app_rpt application.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/4/19 10:52pm
How to build a Coax Balun 1:4 and 1:1, An Automatic Antenna Tuner , HG7AN Antenna Analyzer, F5RDS remote station setup, Unun vs Balun - Configurations and differences, G0HWC New Ham Shack, World Wide Digi DX Contest

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/4/19 10:52pm
Software/Radio Control
The Ultimate Control Software for the IC-7300, IC-7610, IC-7600, IC-7850, IC-7851 and Others is a control software suite that includes additional interesting features such as support for the built in Spectrum Scope, Audio monitors, Shortwave DB, CW Terminal, Clublog Spotting, Memory management, interface to Ham Radio Deluxe Logbook, DM780, n1mm+, log4om, DXLab and other. Runs on Windows OS, commercial licence.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/3/19 11:24pm
ICOM IC-705 English video presentation of the new QRP transceiver by ICOM

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/3/19 11:24pm
Radio Equipment/HF Vertical Antenna/GAP Titan
An unusual Titan DX antenna seutp, done without the standard counterpoise. This document is not an official manual, but rather a personal note to record the antenna setup with the custom wire counterpoise.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/3/19 11:24pm
Radio Equipment/HF Transceivers/Icom IC-705
Download the official IC-705 RF direct sampling VHF, UHF, HF, D-Star all mode 10W QRP portable transceiver. Pre-release information in english.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/3/19 12:51am
Technical Reference/Grounding
Solution for stations located at secondo floor or higher. Lead lengths to the grounding system are much too long to provide a low-impedance RF ground.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/1/19 11:39pm
Software/Radio Control
Win4Yaesu Suite is a commercial software for Yaesu FTDX and FT991 Radios. It includes support for SDRPlay and LPPAN panadapters. It interfaces to all third party hardware and software programs including HRDLogbook, DM780, DXLabsSuite, NAP3, N1MM+ and many more.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/31/19 11:35pm
Software/Antenna analysis
This EXCEL Program Worksheet calculates the common-mode impedance of a 1:1 Guanella (current) balun which is placed at the feed point of a balanced antenna system fed via coax.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/30/19 11:35pm
IC-R20 by Icom. Wideband Receiver Professional radioreceiver, allow double receiver, from HF to Microwave, digital recorde, DTCS, Memories and 11 hours countinuous reception.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/30/19 10:58pm
Icom announces the new all bands, all modes transceiver at Tokio HamFair 2019. IC 705 is a SDR HF/VHF/UHF All modes compact transceiver

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/30/19 10:58pm
Software/Circuit Design
This online calculator will return the inductance of a coil. It will ask you the total number of turns, the total diameter of the coil and its lenght, from the first winding to the last. Obtaining the correct inductance in winding a coil can be easy if you already know how many turns are needed. Available in inched and centimeters,

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/29/19 10:59pm
Software/Circuit Design
This online calculator will give as output the Inductance L of a coil, including the total lenght of the wire needed to wound the coil. As input, requires the Diameter, number of turns, wire diameter and turn spacing

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/28/19 11:40pm
Vertical Dipole Antenna for 14 MHz by G3PND, Delta Loop for 40 and 20 meter Band by UR0GT, R3KBO EB104.ru Amateur Radio Products, Ameritron AL-811 Panel Meter Lights, ARDF Equipment Ideas, ARDF Sprints and Fox-oring,

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/28/19 11:40pm
Radio Equipment/HF Vertical Antenna
A review of the GAP Challenger DX Antenna that is not a traditional 1/4 wave vertical, but is a vertical dipole, this gives it several advantages over a standard 1/4 wave vertical, mainly the reduced number of radials, with excellent performances.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/27/19 11:41pm
DX Resources/Callsigns
If you need to look for an old amateur radio call sign, you can have a look into the archive.org amateur radio callbooks archive. It contains over 100 copies of very old printed callbooks.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/26/19 11:15pm

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/26/19 11:15pm
Antennas/Vertical
This Field Day Vertical Antenna project is the result of many years of attending various field day sites and realizing that what was needed is a simple, easy to assemble vertical antenna. The design of this Field Day Antenna is not very novel and leverages ideas from Butternut verticals and ARRL publications. The one essential requirement was that the antenna can be raised by just one person. The design of this Field Day Antenna is an above ground mounted ground plane vertical.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/26/19 11:15pm
Manufacturers/Transceivers
Laboratory 599 makers of the DISCOVERY HF/50 MHz SDR Ultra-compact Trasceiver.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/25/19 10:56pm
Antennas/Theory
A classic document originally presented in Proceedings of the Institute of Radio Engineers in 1937 and is, still today, the standard referenced by the FCC, text books and many amateur radio publications.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/24/19 11:07pm
Technical Reference/Radio Frequency Interference
I have RFI, now what– Locating it. This article is the first of a three parts article, that covers the problem of locating the RFI source. Author make use of an SDR receiver to locate RFI emissions. Ai interesting RFI location process diagrams helps on following the various phases, permitting the discovery of almost 75% of the RFI issues.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/23/19 11:14pm
Operating Modes/Internet Linking/AllStarLink
The official community website of the AllStarLink amateur radio internet linking system. The communinty requires registration and is the proper place to join discussions for all matters related to AllStar

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/22/19 10:53pm
Antennas/Beverage
This is a QST Article published in January 1982 by W1FB D. Demaw and HH Beverage and is a complete review of the original article published in 1922, which updates and reivew the beverage antenna theory and developlment, explaining the antenna design of transformers and gives accurate reports on antenna general performance.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/21/19 11:29pm
Antennas/End-Fed/End Fed Half Wave Antenna
In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/20/19 11:32pm
Software/Circuit Design
This EXCEL Program Worksheet calculates the safe operating conditons for a toroidal transformer operating between 1 and 50 MHz. Manufacturer data for complex permeability, magnetic dimensions, and saturation flux density must be available. Some core types which are commonly used in amateur transmission are included. The program produces limiting winding voltages for linear operation and temperature rise over the range of frequencies and power specified.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/19/19 11:02pm
DX Resources/Callsigns/Vanity Call Signs
A document partially scripted by Wikipedia and washington readout about history of vanity call signs,

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/19/19 12:22am
Antennas/Repair and Maintenance
How to make proper maintenance of your antenna. Fighting Antenna Corrosion is a QST article published in 1993 that helps on antenna maintenance works

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/17/19 11:54pm
DX Resources/Callsigns
Many times, persons doing research about their ancestors know that a relative was a ham radio operator, and they are interested in learning the call sign held by that person. Depending on the year when the person was licensed, this can sometimes be a very difficult process.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/16/19 11:19pm
Antennas/Theory/Antenna Gain
This document is a must read for anyone considering building a good low cost HF multi-band antenna system. The author combine in this document four important ingredients to produce simple but effective antenna system, like antennas of non resonant length, line attenuation, the transmatch and the balun

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/15/19 11:05pm
Antennas/Beverage
An article about the Beverage antennas, super long wire receiving antennas thar are unidirectional and have a very low noise that makes this antenna excellent for low band dxing. By Thomas R. Sundstrom W2XQ, 73, June 1981, 73 Magazine

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/14/19 10:59pm
Operating Modes/Internet Linking/AllStarLink
Reference site of the HAMVOIP AllstarLink AllstarLink provides hams with a means of connecting radios, repeaters or simplex links, over the internet. It is built upon the asterisk open source PBX and runs on Linux

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/13/19 11:01pm
Antennas/Beverage
A QST Article published in November 1922 is about the origin of Beverage antennas, an unidirectional antenna type that was discovered and experimented for the first time in that period. This article is the introduction to beverage antenna theory, by the homonimous autho H. H. Beverage.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 8/12/19 11:56pm
Antennas/J-Pole
Complete plan for making a 2-meter J-Pole antenna. This drawing in PDF File includes a detailed list of the parts needed to assemble the Jpole antenna for 144 MHz.

[Author: author@dxzone.com]

As of 9/22/19 10:58am. Last new 9/21/19 10:55pm.

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