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PstRotator handles just about every controllable rotator in common use: Prosistel, Green Heron, HyGain, RC1 MDS, Rotor-EZ Idiom Press, Yaesu Az and many more PstRotator includes automatic tracking for satellite or EME communications, using programs like WSJT, VQLog, TACLog, Z-Track, GJTracker, EME System, Trak_SM, WXtrack, WinOrbit, Orbitron, Nova for Windows, Sat_Explorer, SatPC32, Win-Test. PstRotator supports remote control over TCP/IP.

Designing quagi and yagi antennas on 2 Meters, some preliminary notes by Cebik, W4RNL

Low-cost 600:50 Ohm Baluns by Andrew Corney ZL2BBJ

A Moxon rectangle antenna projects for the 6 10 15 17 and 20 meter band but include drawings, plans, statistics and homebrewing statistics.

How to produce great audio using your SSB rig and outboard equipment. Step by Step instructions.

A Primer for the new Packet Radio operator

A large worldwide map of aeronautical service Frequencies allocation on HF bands dated 2002

A High Efficiency Extended Length Mobile Antenna The antenna itself is 3.42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip.

Plans to build a three or four foot box loop for the AM broadcast band, will tune from 530 to 1710 kHz.

Live scanner feed and police and fire feeds

Harger Lightning Protection is a full line supplier of lightning protection and grounding equipment, servicing the lightning protection, communications and electrical industries.

Fatpigdog's Real Time FFT Audio Spectrum Analyzer. User interface has the look and Feel of an HP Spectrum Analyzer. But, in addition to the regular Spectrum Plot, it also produces detailed Waterfall plots. The user can optimize the color map, chosing from a wide assortment of color themes. This analyzer supports multiple traces, trace arithmetic and normalization.

A Center-Fed Half-Wave Dipole is probably the simplest of antennas to construct and use. It is usually suspended between two supports, from it's end insulators, and has the feedline hanging from the center.

A new method of feeding a dipole with toroids.

Reduced Size Broad Elevation Verticals

A really simple receiving antenna for 80 and 160 meter dxing by WA2WVL

Comprehesive page on TS-940 TS-940 reference maintained by ZL4AI Jeff

The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.

The Ohio/Penn DX Bulletin is freely distributed on the Internet and packet clusters around the world, by Tedd Mirgliotta, KB8NW. Published almost on weehly basis the OPDX is one of the oldest DX news list on the internet.

Official ICOM distributor for The Netherlands, Belgium and Luxembourg

Over 75 years of engineering expertise underpins Bird Electronic's offerings in RF power measurement, critical for maintaining peak performance in amateur radio stations and professional communication systems. The company specializes in a range of test equipment, including wattmeters, SWR meters, and antenna analyzers, essential for optimizing antenna systems and ensuring efficient power transfer. Their product line extends to various RF components such as filters, cables, and connectors, all designed to meet stringent technical specifications for reliability and accuracy across diverse frequency bands. Bird Electronic's instruments, like the _Bird 43_ Thruline Wattmeter, are widely recognized for their robust construction and precise measurement capabilities, providing hams with confidence in their station's operational parameters. These tools enable accurate assessment of forward and reflected power, SWR, and modulation characteristics, which are vital for troubleshooting and maximizing radiated power. The company's commitment to innovation ensures that its products remain relevant for modern RF challenges, from HF through microwave applications, supporting both traditional analog and advanced digital modes.

Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232

Eighteen-part tutorial on packet radio in HTML and ASCII format from Larry Kenney, WB9LOZ

Experience of band filters, for a contest multi operator enviroenment

PC power supply conversion for ham radio use. Slide show overview showing how convert PC Power supplies to ham radio use presented at the August 2007 FSARC meeting.

Get all band coverage with a single wire and the icom 703

Map of USA Districts

The function of the calculator is to give all of the needed sizing to construct a good 5 element quad antenna for amateur radio use.

BesserNet Reflectometer is a fun SWR calculator and simulator Java applet

An interesting rotator interface that interfaces a pc to a rotor or rotator controller, emulating a Yaesu GS-232A/B and Easycom protocols, made with Arduino

Active digital mode frequency list compiled by Jason Buchanan - N1SU

Portable Vertical Antenna for 75m and 40m featuring Low radiation angle for DX, easy to install and to match 50 ohms

Great first time J-pole project. Covers most of the basics. This small and thin design also makes it good for several stealth applications.

IC 706 modifications collected by mods.dk

Dual band rectangular loop antenna for 15m and 10m

HotPaw MorseDecoder, an iOS application, provides real-time translation of Morse Code audio signals into plain text, leveraging the device's microphone or headset input. It incorporates a DSP narrow-band audio filter, adjustable from 300 to 2400 Hz, to mitigate background noise and QRM, enhancing signal clarity for decoding. The application offers both an automatic decoding mode and manual controls for fine-tuning parameters such as audio filter frequency, WPM dot/dash speed, noise threshold, and Farnsworth timing. The WPM detection automatically adapts from 8 to 40 WPM, with a QRQ High Speed mode extending this range to 30-80 WPM for faster code. A built-in spectrogram aids in identifying the precise audio frequency of the CW tones. User feedback indicates effective performance with various transceivers like the Yaesu FT-857 and Icom IC-R8600, particularly when manual settings are optimized. The app's ability to visually tune stations within the passband and decode speeds beyond an operator's manual capability has proven beneficial during contests and general QRP operation.

The "Tenna Dipper" is a low power antenna analyzer and ATU tuning aid. With this handy accessory, you can determine the 50 Ohm resonance frequency of antennas or you can adjust your antenna tuner for a 50 Ohm match without generating QRM

Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak. Circuit Description, Arduino Nano software code and part list to DIY your own Digital SWR Meter

The Packet Terminal Driver program is a general purpose communications package for communicating with a packet TNC attached to your IBM-PC/clone. The program was written to work with the Kantronics range of TNC's but should work with any TNC that is connected to a serial port on your computer.

N6RK receive only loop antenna

A 80 meters band loop antenna plan by VU3GAO

An introduction to DIY building of a concrete base for a 45' mast.

A web site dedicated to the K3LR contest station, a Multi Multi Station with 9 towers located in Western Pennsylvania. It provides information about the station components, antenna construction company, radio equipment used, and upcoming events like the Top Band Dinner at Dayton. The site also includes links to related resources like Contest University, Dayton Contest Dinner, and World Wide Radio Operators Foundation. The intended audience is amateur radio operators interested in contesting and DXing. The content is focused on promoting the K3LR station and sharing news and updates related to its activities.

Get the most out of the shortwave listening hobby. Follow these steps to get started with your new radio.

DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers

A web site offering a QRZ.com integrated mapping service. Allows creating a google map of your QSOs adding a list of QSOs manually or importing an ADIF log file. Registration and a QRZ.com account is required.

FT-450 Operation Manual

This free PDF file contains two Worldwide grid square maps. The first map displays the fields (first two letters of a maidenhead locator) while the second includes also squares (third and fourth digit) and it can be useful to determine what is your ham radio grid square. PDF file can be enlarged and scaled to A3 and higher dimensions.

Morse Code ultra lite touch paddles and keyer, Touch Paddle plus built-in electronic keyer

An 11 meter radio club