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All around HAM Radio - DL1BI Amateurfunk Station

Drake R-4 Receiver manual

In this wikihow article you can learn how to assemble a RG-6 cable with a SMA connector or a RG-59 with a BNC Connector

The first DX From "The Southern Most Tip Of Mainland Asia"

Amelia Island, IOTA NA-138, Saturday 31 December 2005 until Monday 2 January 2006 Jekyll Island, IOTA NA-058, Tuesday 3 January 2005 until Saturday 7 January 2006

SDR++ is a cross-platform, open-source SDR software designed for minimal bloat and ease of use, supporting Windows, Linux, macOS, and BSD operating systems. It incorporates multi-VFO capabilities and offers extensive hardware compatibility through both _SoapySDR_ and dedicated modules. The software features SIMD accelerated DSP for efficient signal processing and provides full waterfall updates when possible, which enhances signal browsing. Its modular design facilitates the development of custom plugins, allowing users to extend its functionality. The application's focus on a bloat-free architecture and user-friendly interface aims to simplify the experience of working with Software Defined Radios. The full waterfall update mechanism is particularly beneficial for visualizing and identifying signals across a wide frequency spectrum, improving operational efficiency for radio amateurs. The modular plugin system enables community contributions and specialized enhancements, making _SDR++_ adaptable for various amateur radio applications, from general listening to specific digital mode decoding.

Distributor of test and measurement and calibration instruments and provider of NIST traceable ISO/IEC 17025 accredited calibration services. Texso sells insulated tools, multimeters, insulation testers, and much more.

Togo DXpedition 5V7TT 10th-23rd October 2010

Laboratory 599 makers of the DISCOVERY HF/50 MHz SDR Ultra-compact Trasceiver.

Welcome to our line of Low Frequency, Natural Radio Research, Broadcast, Marine and Shortwave products. Our evolving product line is the result of our dedicated research efforts primarily in the areas of LF, VLF, MF, and HF.

The TX & RX DX Group is a group that was created inside the TX & RX Forum. Several colleagues reported in TX & RX Forum were participating in a thread about the DX on 11 meters and so it happened

These pages containing informations about contesting on 144MHz and higher bands. All informations are only in Czech language.

Zplots is an Excel application that allows you to plot impedance and related data obtained from a variety of sources. You can plot on both an XY chart and a Smith chart as well as view the data in tabular format. The XY chart can be customized with your choice of trace lines. Frequency (in MHz) is always shown on the X axis.

9M0L 9M0 Spratly Is Layang-Layang DX Pedition 10-24 April 2012

PI4COM is a small group of enthusiastic radio amateurs who like HF contesting

This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.

Sound clips and notes on sporadic E on four meter band

Elements are aluminum TIG soldering rods 4.0mm of diameter, almost 1m long, these objects are light, thin and flexible based on the RZ9CJ Design

The Windom antenna, one of the oldest antennas developed for amateur use, has had a complicated history, one as interesting as the theory of the antenna itself.

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

The page provides information on a simple 50MHz J-Pole Antenna project based on the DK7ZB design. It explains the principle of the Wireman-J-Pole, the feeding process, practical mounting, and simulation results using MMANA GAL. The content aims to guide amateur radio operators in building their own J-Pole antennas for the 6-meter band.

Realtime online log search for 5X3C DXpedition to Uganda 2019

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).

A portable operation experience with a SpiderBeam pole during a contest, testing wire antennas, like dipole and delta loops configurations on 20 40 and 80 meters band.

VHF/UHF FM Mobile Transceiver with APRS and EchoLink Functionality official Kenwood UK site

Longwave refers to all frequencies below the lower end of the AM broadcasting band at 540 kHz

A little gadget was found in an article in QST, made with 1 pair of powerpole connectors a resistor and two leds

A page devoted to my amateur radio station: KQ4Y

Article cover hints and tips on ham radio or amateur radio contesting and contests

This module is an analogue and digital SWR and power meter/monitor, designed to replace analogue SWR and power metering in an AM Transmitter project.

IOMARS affiliated to the RSGB in April 1948. This is the only OFFICIAL site of the Society. The primary club for Amateurs on the Isle of Man

Contesting Resources for Amateur Radio - A long list of amateur radio contesting resources collected by K8ZT

The ARI Tuscany Regional Committee sponsor a special Award during the 2013 UCI Road World Championships held in Tuscany from 22nd to 29th September 2013

Ulaanbaatar DX Club facebook fan page

An homemade 50 Ohm 140 W dummy load based on an idea and project by ON5DB Renaud.

The _Icom IC-7300_ transceiver, a popular SDR rig, can be readily configured for digital modes like FT8 using _WSJT-X_ software. This guide details the necessary steps, from downloading the correct version of WSJT-X to configuring the radio's USB audio and CAT control settings. It emphasizes a straightforward approach, aiming to simplify the often complex initial setup for new digital mode operators. K0PIR shares his practical experience, outlining the specific menu settings on the IC-7300, such as USB SEND/DPT and USB MOD LEVEL, which are crucial for proper signal modulation and transmission. The resource also covers the integration of WSJT-X's built-in logging capabilities, streamlining the process of recording digital contacts without needing external logging software immediately. This setup allows for efficient operation on various HF bands. Two embedded videos further illustrate the configuration process, providing visual aids for each step, from initial software installation to making the first FT8 contact. The author's method focuses on minimizing common setup hurdles.

I am an EMT-B,an Incident Commander for NM Search and Rescue and an Amateur Radio Operator - KD5KTY Dedicated to the Preservation of Life through Search, Rescue and Education services.

If you thought you knew everything about balun performance characteristics, there is an important figure of merit you may have neglected

Programming the FT-8800R via the front panel and microphone keypad is not extremely difficult. Already having a list of local repeaters in CHIRP, the addition of a USB cable would allow you to coordinate the memory layout across multiple radios with ease.

VK3MO, An inspiring Australian Amateur Radio operator

MCRCA Monroe County Radio Communications Association

Seaside Tsunami Amateur Radio Society

Datasheet Locator is a free tool that enables you to locate product datasheets from hundreds of electronic component and semiconductors manufacturers

Le radio club de la Cote Basque, amateur radio pages about HF / VHF / UHF / digital modes, Projets with arduino and raspberry , training classes.

A new ham finding his way in the hobby

The branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation

Paulding county's oldest and largest ham club. Skywarn

Just my little corner of the world, one radio at a time

East river amateur radio club - Bluefield, WV