[*] [-] [-] [x] [A+] [a-]  
[l] at 6/22/19 10:59pm
Antennas/Towers
Article based on ROHN engineering specification that will guide on proper guying heights and guy lengths when guying ham radio antenna masts. It will help you determine ahead of time the proper length of guy wires and the distance from the base of the mast to the anchor points

[Author: author@dxzone.com]

[*] [-] [-] [x] [A+] [a-]  
[l] at 6/21/19 10:57pm
Manufacturers/Towers and Accessories
Specialist for vertically adjustable supporting frameworks including telescopic masts and telescopic towers for ham radio systems, lighting systems, measurement techniques, observation systems. Located in Gnaschwitz Germany

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/20/19 11:24pm
Antennas/Towers
A multiple page article about assembling the antenna system, this section includes informations on constructing of the concrete tower base, starting from setting up correctly the foundations in relation to the antenna height.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/19/19 11:01pm
Antennas/Dipole
An 20 30 40 meters trapped dipole antenna plan for sota and portable operations.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/19/19 12:51am
Antennas/Dipole
As the name suggests, it is simply a dipole with the tips folded towards each other. In this case, a full-wave dipole. The span of a standard folded dipole is aprox 0,5 lambda

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/19/19 12:51am
Ham Radio/Blogs/USA
Web site and blog that reviews equipment, goes over safety, and display projects being built. Includes Yaesu FT-891 and Ameritron RCS-10 Review, a 555 Morse Code Practice Oscillator, and and arduino based Morse Code Practice Oscillator

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/18/19 12:04am
Manufacturers/QRP Kits
Makers of QRP HF General Coverage Transceiver you can build. The Home of BITX transceivers, µBITX General Coverage Receiver-Transmitter. . A general coverage, 10 watts HF SSB/CW transceiver kit with features you NEED for operating ease, convenience and versatility. It works from 3 MHz to 30 MHz, with up to 10 watts on SSB and CW, with a very sensitive receiver.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/16/19 11:14pm
Long Wire Antenna for portable operations, ICOM IC-7610 review by PD9Z, TelTad Online Shop, ADALM-PLUTO SDR, DX HOLIDAY

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/16/19 11:14pm
Antennas/30M
Homebrew 30 meter full quarter wave vertical antenna.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/15/19 10:50pm
Technical Reference/Preamplifiers
The prototype for this amplifier was originally designed for 70cm and was used on the 2004 3B9C Dx-pedition to Rodriguez Island for satellite and EME. It had a noise figure of 0.49dB with an associated gain of 20dB.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/14/19 11:07pm
Manufacturers/Filters
Microwave Filter Company is a leader in the design, development and manufacture of high quality passive electronic filter products in the 5 Hz to 50 GHz frequency spectrum.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/13/19 11:39pm
Antennas/Baluns
A page describing how to home made a custom 9:1 balun for a common portable wire antenna. The author suggest to use 4C65 or FT140-61 toroids instead of the common Amidon T200-2

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/12/19 11:15pm
DX Resources/QSLing/QSL Galleries
Collection of QSL cards from more of 200 dxcc countries confirmed in SSB and CW

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/11/19 10:46pm
Antennas/Theory
A collection of antenna projects by W4RNL L.B. Cebik collected in a single link page by ON5AU. Includes ARRL QST, Modeling and Understanding Small Beams and books

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/9/19 11:18pm

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/9/19 11:18pm
Build your own RF-Choke, End-Fed antenna for 17 and 12 meters, Harbach Electronics - Amateur Radio Amplifier Parts, Delta Loop DX Antenna for 40 meters band, UKW-Berichte Telecommunications, F-troop, VK6FLAB Podcasts - Foundations of Amateur Radio

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/9/19 11:18pm
Operating Modes/NPR New Packet Radio
NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/9/19 11:18pm
Operating Modes/NPR New Packet Radio
A Quick start guide to NPR New Packet Radio on 70 cm band by the NPR author Guillaume F4HDK. This presentation introducte basic concepts of this niew digital protocol, and guide the user to the first modem configuration both of client and master modems. Includes a final recap of commands.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/9/19 11:18pm
Operating Modes/NPR New Packet Radio
An introduction to NPR by Daniel Estevez. In this blog article Daniel EA4GPZ / M0HXM, introduce the new IP communication protocol over the 70 cm amateur radio band. Daniel is an experienced operator on IP on 430 MHz with CC1101 and Beaglebone black project and makes a good comparison of the two projects.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/8/19 11:07pm

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/8/19 11:07pm
DX Resources/Logs
Search S9A Log Online DXPedition 2019 Jun 6 - 2019 Jun 18 - S9 Sao Tome & Principe

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/7/19 11:16pm
Manufacturers/Test Equipment/Spectrum Analyzers
Saluki manufacturer of Spectrum Analyzer, Handheld Spectrum Analyzer, Signal Analyzer, Cable and antenna analyzer, Network Analyzer|RF Signal Generator, Cable Antenna Analyzer

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/6/19 11:00pm
Operating Modes/Mobile/RV & Camping
Ham shack located in a caravan and run by solar power. This page describes VK5SW experience of converting an old, disused and rundown caravan, to a fully functional solar powered Ham Radio shack.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/5/19 11:11pm
Technical Reference/QRP Projects/QRP CW Transceiver
Frequency agile 80 metre CW QRP transmitter. Ceramic resonators vary in the frequency shift obtainable. The one in the prototype of this article gave 3.525 to 3.558 MHz coverage.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/3/19 11:18pm
Isotron Antennas, Maria Maluca by DL4AC, G3TSO Mobile Antenna Page, Flag Database - Miniflags by Mooney, Microwave Transverters Projects

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/3/19 11:18pm
Operating Modes/FT8
A simplified Guide to the FT8. Dxpedition mode. By Stefano IK2HKT – Rel. 2.0.0 - January 2019. This document explains how to configure WSJT to work on F/H mode DXPedtions, how to operate and make a call to a dxpedition calling CQ in FT8 Fox Mode.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/3/19 11:18pm
Operating Modes/FT8
An excellent guide to operating FT8 mode available in English, German and Czech that cover several aspects of the FT8 operations. Includes and exaustive guide to how configure FT8 software, how to conducto a QSO and how to operate DXPeditions in FT8 F/H mode. Covers aspects of FT4 contesting operations and interfacing with logging programs

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 6/1/19 10:59pm
Antennas/Quad
The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost, who was a pioneer of VHF Quad designs and one of the best Southern California Transmitter Hunters. Ray built hundreds two meter quads in single and paired configurations as well as his famous mobile radio direction finding quad.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/31/19 11:13pm
DX Resources/Logs
Eritrea E31A DX pedidtion online log by Clublog

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/30/19 11:28pm
Manufacturers/Arduino
The RFzero is a multi function signal platform developed for radio amateurs who wants to extend the Arduino skills in combination with RF. The RFzero board is largely compatible with the Arduino Zero and Arduino M0 boards, however, it has been carefully designed for flexible use in RF applications and with attention to the frequency spectrum and stability performance.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/29/19 10:53pm
Technical Reference/Raspberry Pi
VHF weather beacon based on raspberry pi. speed and direction of the wind, temperature, atmospheric pressure, are transmitted in voice every 15 minutes. In French

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/27/19 11:22pm
Internet and Radio/Classifieds
100% free eBay like classified listings for any ham radio operator. Search filters for distance and item category.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/26/19 11:28pm
The 160M No Excuses Homebrew Vertical, EH antenna for 40 Meter, Magnetic loop by F5SWN, Maria Maluca Antenna by PY2BBP, 2m W6PO Power Amplifier Project, QSLInfo.de QSL manager database, Yaesu FT-1000-D RS 232 CAT interface

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/26/19 11:28pm
Technical Reference/HF Radios
Home made 40 meter transceiver project. The receiver is a Progressive Receiver with a few modifications. The Transmitter is a modified MFJ Cub circuit. Includes schematic and circuit diagrams for Receive Input Filter, 3-Pole 500 Hz Cohn Filter and 7 MHz Double Tuned Bandpass Filter

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/25/19 11:44pm
Operating Modes/Portable Operations
Personal web site by N9SKN about portable QRP operations with pictures of several portable setups and antenna solutions.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/24/19 11:12pm
Technical Reference/APRS
Super Simple APRS Position Reporter. This project idea has been in response to the more hardware heavy Raspberry Pi projects that involve extra TNC hardware, additional sound cards, and custom cabling. This APRS position reporter is done using a Raspberry Pi B+, USB GPS receiver, Baofeng UV-5R, and a mono 3.5mm audio cable between the Pi and HT.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/23/19 11:09pm
Technical Reference/Radio Direction Finding
The RasHAWK team has used a Raspberry Pi as the basis for a networked RF sensor capable of supporting spectrum monitoring, signal intercept and direction finding (DF) operations.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/23/19 12:10am
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 5/22/19 11:29pm
DX Resources/DX Peditions/2019 DXpeditions
EU099 - The Minkies Islands DX Pedition. Les Minquiers Islands (eu099) are a group of islands and rocks, about 15 km (9.3 mi) south of Jersey and will be activated by ON5HC - ON7PQ - ON4KZ - ON5DZ - ON8A.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/21/19 10:48pm
Manufacturers/QRP Kits
Since 2011, crkits offer radio kits that you cannot find on eBay or AliExpress. Includes HT-1A 20/40m Dual Band CW Transceiver Kit, D4D DSB Transceiver Kit for Digital Mode, R3500D ARDF Receiver, CW Transceiver Kit

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/20/19 11:19pm
Technical Reference/Coax Cables and Connectors
An on-line coaxial cable attenuation and total power handling calculator, with a lot of cable properties already configured to give the Nominal Attenuation, Maximum Cable Assembly Insertion Loss, Average Power, Cable Vg anf Nominal Td

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/19/19 10:52pm

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/19/19 10:52pm
Fan Dipole Antenna for 40 20 and 6 meters, Antenna Maria Maluca, GridMapper WG7J, MARS Mod for the Yaesu FT-450D, HamThreads, Best Practices for DXpedition Operating DX University, DX Pedition Audio Recordings

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/19/19 10:52pm
Technical Reference/Coax Cables and Connectors
RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/19/19 10:52pm
Radio Equipment/HF Transceivers/Yaesu FTDX101
The Official page of the FTDX101 on the Yaesu.com website, includes full description, PDF brochures, official english manuals, complete accessories list and direct link to Yaesu software download for this radio

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/18/19 11:02pm
DX Resources/Shack Rental
DX-HOLIDAY is a DX holiday and DXpedition holiday-style dedicated website which provides excellent information on a range of pertinent topics such as: organize a DX-holiday in remote area, organize DXpedition holiday-style with your family, booking and negotiating with hotels, obtaining a foreign amateur radio license, rent a radio shack and antennas during your holiday, travel documentation & money matters, health, emergency, and weather issues

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/16/19 11:29pm
Elecraft introduces the K4 High Performance Direct Sampling SDR Modular hybrid architecture Next-generation features, operating convenience, and style

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/16/19 11:29pm
CW WorldWide WPX Contest CW is May 25-26, 2019 Starts: 0000 UTC Saturday Ends: 2359 UTC Sunday

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/15/19 11:02pm
Manufacturers/Software Defined Radio
The Adalm Pluto by Analog Devices is a Portable self-contained RF learning module, based on Analog Devices AD9363--Highly Integrated RF Agile Transceiver and Xilinx® Zynq Z-7010 FPGA. Includes one transmitter and one receiver, half or full duplex and cover 325 MHz to 3.8 GHz

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/15/19 12:01am
Radio Equipment/HF Transceivers/Icom IC-7610
PD9Z reviews the ICOM new IC-7610 with a list of surprising features he has found on this transceiver. Signal reception performances are one the mosto valuable features found on this high-end RTX by ICOM. Along to his review you can access several other resources related to the IC-7610 including manuals, tips and tricks, videos, and configuration settings to be implemented in order to be used with Heil Sound headsets.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/13/19 10:58pm
Antennas/Wire
With the view to establish a quick and easy multi-band antenna deployment for portable and camping operations a simple long wire antenna with an earth or earth plus counterpoise arrangement with a 9:1 voltage unun including a tuner or simply with a tuner is one possible solution. With the 9:1 voltage unun and wire lengths suggested in the below tables the antenna should present non extreme impedances for all HF amateur band frequencies. This page is far from complete and represents the ongoing investigation into this type of antenna. Experiments to date seem to have raised more questions than obvious answers.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/12/19 11:17pm
Portable Dipole Antenna for 7 MHz, The VHF/UHF DX Book, Ham Radio Loop Antenna, QSO map generator, North Korea - P5/4L4FN, Alpha 87a Amplifier Fault 1, Receiver Protection in SO2R and Beverage Antennas, 16th HST World Championship

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/12/19 11:17pm
Shopping and Services/Regional/Europe
TelTad is a Polish amateur radio dealer with an online shop. Products offered includes all major ham radio brands, Yaesu Icom Kenwood, Alpin, OM Power, VPA systems Antennas

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/12/19 12:11am
Antennas/Feed Lines/Choke
How to make an effective RF Choke. The coiled coax choke is the easiest to make but also the least effective. This article includes some general guidelines for winding coax chokes on a 10cm PVC pipe using RG-58 or RG-213 coax cable.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/10/19 10:57pm
Antennas/40M/40 meter Delta Loop Antennas
A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/9/19 11:17pm
Shopping and Services/Cables and Connectors
On-line shop for coax cables, RF connectors, Lightning protectors, Create antenna rotators, antenna masts and mounts, amateur antennas by FlexaYagi, Tonna F9FT, ANjo-Antennen and M2 Antennas based in Eggolsheim Germany

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/8/19 10:59pm
Antennas/End-Fed
Article about an end-fed anntenna for the 17 and 12 WARC Bands. 30 meters is not included in this project. This antenna includes a 14 windings unun impedance transformer using a FT-140-43 ferrite toroid, that should be enought for a 100W PEP.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/7/19 11:02pm
Shopping and Services/Kits and Components
Your World-Wide Source For Amateur Radio Amplifier Parts & Upgrade Kits for Collins, Dentron, Drake, Heathkit, Kenwood, Swan W8ZR, Yaesu Products

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/6/19 11:43pm
DX Resources/Nets
A weekly net for new and returning hams, runs every Saturday from 00:00 - 01:00 UTC and can be heard across the world. During the weekly F-troop there are mentions of software, websites and solutions that are worth taking note of. This website attempts to document them.

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/5/19 11:15pm
rpitx Multimode TX for Raspberry Pi, About Microphones - Guide to microphone for Ham Radio, Receiving GOES-16 Images with an RTL-SDR, EME Dish Antenna Project, CW and Morse Code Telegraphy, Pass Recorder, Morse Runner on MacOS,

[Author: author@dxzone.com]

[*] [+] [-] [x] [A+] [a-]  
[l] at 5/5/19 11:15pm
Internet and Radio/Podcast
Onno podcasts and interviews. Foundations of Amateur Radio - a weekly podcast about Amateur Radio. It continues on from "What use is an F-call?" and discusses the various concepts that make up the 1000 hobbies that Amateur Radio represents.

[Author: author@dxzone.com]

As of 6/24/19 10:10pm. Last new 6/22/19 10:59pm.

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