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HF Propagatie


   Bezoekers online


RSS lezer - 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

Yaesu FTDX-10 Video  Kijk naar?

One of the very first video about the Yaesu FTDX-10 HF/50 MHz transceiver with comparison with FTDX-101 and FT991
(01/01/1970 @ 01:00)
Top Amateur Radio Websites - Issue 2030  Kijk naar?

Build the PAC-12 Antenna, Amidon ferrite toroids calculator, Morse Code Trainer Online, 1200z Time Explained, KMRover, Log Book MDB to ADIF utility
(01/01/1970 @ 01:00)
Universal Radio To Close Store  Kijk naar?

Owners of Universal Radio decided to retire and our current location in Worthington will close on November 30, 2020.
(01/01/1970 @ 01:00)
CQ WW DX CW Contest 2020  Kijk naar?

The CQ WW is the largest Amateur Radio competition in the world. Over 35,000 participants take to the airwaves on the last weekend of November (CW) with the goal of making as many contacts with as many different DXCC entities and CQ Zones as possible.
(01/01/1970 @ 01:00)
Top Amateur Radio Websites - Issue 2029  Kijk naar?

An automatically tuned 7 to 30 MHz mobile antenna, Double Bazooka, High efficiency, legal limit, solid state linear HF amplifiers, Ham and CB Radio, Portable NVIS Loop for 80m to 40m, LUTZ-Electronics, Guide to HF Contesting, The NorthEast Wisconsin DX Association, W2NAP.com, Online Australian Repeater Maps,

... / ... Lees meer...

(01/01/1970 @ 01:00)
ICOM IC-R20  Kijk naar?

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)
Simple Onlne QSL Generator  Kijk naar?

A funny online application that lets you build your own QSL cards based on templates. You can choose background text aligment and text to be printed on your card.
(01/01/1970 @ 01:00)
Setup Packetradio on a Raspberry  Kijk naar?

Technical Reference/Raspberry Pi
A quik guide to install direwolf, bpq and jnos on a Raspberry Pi. if you follow the instructions in the examples you should get it to work. You only need to adjust the configuration files direwolf.conf, bpq32.cfg, autoexec.nos

... / ... Lees meer...

(01/01/1970 @ 01:00)
Recognition of CW signs at different listening levels and frequencies  Kijk naar?

Operating Modes/Morse code/Learning Morse Code
The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB. All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.

... / ... Lees meer...

(01/01/1970 @ 01:00)
OpenRepeater for Raspberry Pi  Kijk naar?

Software/Repeater Control
OpenRepeater is a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary / emergency repeater systems with radios that can be run on portable power. Download the latest OpenRepeater software for your Raspberry Pi 2/3/3B+/4. This image contains everything you need to get up and running quickly.

... / ... Lees meer...

(01/01/1970 @ 01:00)
WiRES-X Bible  Kijk naar?

Operating Modes/System Fusion
The purpose of this book is to provide a common source for WIRES-X, gather information from manuals, experiences from the Amateur Radio Community, and the best practices from both the Amateur Radio Community and the Bakken Amateur Radio Society. To provide a platform for learning, experimentation, and advancement of Amateur Radio skills and art. A platform of Discovery and to have FUN. To encourage networking, sharing, and exchange of interesting technical information of WIRES X, where people are encouraged to help each other out.

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(01/01/1970 @ 01:00)
Guide to QSLing  Kijk naar?

DX Resources/QSLing
What is a QSL Card and what should be the content of each QSL card, collecting cards, electronic QSL LoTW eQSL, QSL Bureau, and QSL managers.
(01/01/1970 @ 01:00)
Packet Radio with Raspberry Pi 2 and Baofeng Radio  Kijk naar?

Operating Modes/Packet Radio
Remotely-Operated 1200 Baud AX.25 Narrowband Packet Radio and APRS on a Baofeng UV-5RA and Raspberry Pi 2
(01/01/1970 @ 01:00)
HF Skeleton Slot Antennas  Kijk naar?

Antennas/Skeleton Slot
HF Skeleton Slot An antenna system with a difference.
(01/01/1970 @ 01:00)
About Digital Modes  Kijk naar?

Operating Modes/Digital Modes
This article is designed as an introduction to some of the more popular digital modes. From HSCW to FT8 and interesting article with detailed information on popular and historical amateur radio digital modes.

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(01/01/1970 @ 01:00)
What is System Fusion  Kijk naar?

Operating Modes/System Fusion
System Fusion is a digital communications mode for voice and data, including pictures. It utilizes a customized, yet open, C4FM FDMA standard. An introduction to Yaesu System Fusion by Wireless Society of Southern Maine

... / ... Lees meer...

(01/01/1970 @ 01:00)

Laatst import : 04/12/2020 @ 02:43

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