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Yagis for 20 15 10 meters band by Nathan A. Miller

Large picture of Icom IC-718 by Rigpix database

SD sets the standard for fast, simple logging and editing in the major international contests and in dozens of others worldwide. SD by EI5DI is a free HF contest logger for windows.

Point to Point hf ionospheric communications analysis and prediction program

Interesting review about active magnetic loop antenna Wellbrook ALA 1530 and 330S by ON4SKY

This is an antenna that author just built. Was intend for receiving the AO-27 downlink (at 436.800 +/- doppler). It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB.

This PDF document, authored by KT4QW in October 2004, details the construction and modeling of a dual-band, horizontally polarized hanging rectangular loop antenna for **10 and 17 meters**. The design, adapted from *The ARRL Handbook*, utilizes _NEC4WIN95_ software for scaling and optimization, targeting a 50 ohm feedpoint impedance. The resource includes a bill of materials, step-by-step construction instructions, and a discussion of the antenna's radiation characteristics. It presents NEC-generated elevation and azimuth patterns, comparing the loop's performance to a half-wave horizontal dipole at the same height and frequency. The 17-meter element is centered at 18.140 MHz for low SWR across the phone band, while the 10-meter element is centered at 28.500 MHz. Construction involves 14-gauge stranded copper wire and Schedule 40 PVC spreaders, with the total wire length calculated by the formula: Length in feet = 1005/MHz. The feedpoint impedance can be adjusted by modifying the rectangular aspect ratio. The document specifies hoisting the antenna to at least a half-wave above ground for testing. It notes that a balun was tested and found to have no measurable effect on SWR or radiation characteristics. A 2-meter scale model is presented to illustrate the physical design, and a "rotator" string is incorporated for directional adjustment up to 90 degrees.

A list of all IOTA reference numbers and IOTA groups for the Islands On The Air award, personalised to your own QTH

Sangean is the leading manufacturer of short wave and pocket radios around the world. Built with precision, quality and the highest technology

G8OFZ multi-band antenna for 80-10m, this antenna appears to be a derivative of the Doublet and the Classic G5RV

Real time world clock

Simple, inexpensive and easy to erect, this antenna provides directivity, low angle radiation and a small gain on a number of HF bands.

Demonstrates Belden's comprehensive portfolio of networking and cable solutions, emphasizing their application across diverse industrial and commercial sectors. The content details how Belden's infrastructure supports critical operations, enabling _network resilience_, edge computing, and data interoperability. It highlights tailored solutions for industries such as automotive manufacturing, chemical processing, and data centers, focusing on improving operational efficiency and ensuring uptime. The resource presents case studies and expert insights, demonstrating how Belden's offerings help organizations process data faster and maintain continuous connectivity, even amidst unexpected events. It underscores the company's role in providing robust infrastructure that merges IT and OT worlds, facilitating seamless data flow and informed decision-making across complex environments. The company's global presence is indicated by its **employees globally** and **Great Place to Work Certified countries** metrics.

Sundance SDR, TI software defined radio solution

The Answer To Suburban DXing On the Low Bands - by Merv Schweigert, K9FD

Modifications for Icom IC-2100H by mods.dk

Link700 is a program that will allow users of Kenwood TH-D7A, E, and AG and TM-D700A and E to download all the data settings of their radio, edit and modify data, upload the data, and save settings to a disk file

The Voice Keyer is a free Windows based voice keyer. It is very easy to use and it handles up to seven messages. By connecting your computer soundcard to your radio it's possible to just press a button and the computer will CQ for you, to spare your voice. It can also PTT your radio via the LPT port by SM3WMV

Pictures of the Ameritron AL-811 modification for 10 meter band extension by km5ps

Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.

ScanControl is the only low cost, easy to use software that supports programming and control & monitoring of the Uniden BC245XLT, BC895XLT, BCT8, BC780XLT, BC250D, BC785D, BC296D, BC796D Digital Scanners and the Radio Shack PRO2052

Reccomendations and tips for VHF-UHF operation

Vintage tubes, radios, parts, radio books and magazines, old telephones, speakers, phonographs, etc. Retail store in Cleveland, Ohio

A gallery collection of funny qsl cards received by PE2PE

Stryker Amateur radios offer great performance and unique features. We pride ourselves with offering affordable radios that are built with quality and performance in mind.

70cms Simple Moxon 2 elements antenna

Makers of motorized antennas covering 6 to 160 meters

The EF0604S is a compact 4 elements yagi antenna plan for six meters band featuring 8.77 dBi gain and a front back gain of 17.89 dB. Article includes elements dimensions and spacing, along to pictures of some homebrewed examples.

An easy to make HF low pass filter form high power

If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter

Information about railroad radio channels and frequencies is provided along with laws relating to using scanners as well as tips and suggestions for programing and using radio scanners.

The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.

A DDS VFO using the Arduino Uno platform

Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band and simultaneous receiption on the other band by hb9abx

A group for discussion of the Yaesu FT-857 and FT-857D radios.

Exclusive Nello Tower Dealer for Amateur Radio Applications. Nello Tower Corp, makes exact replica Rohn Tower sections and accessories.

A cb radio forum that is for cb operators only.

KR1ST computer headset interface for Icom IC-718

CallBook is an Amateur Radio application that allows you to look up call signs via the free WM7D server, the QRZ Online subscription service or the HamCall subscription server and track active APRS stations on www.aprs.fi. Lookup results can be emailed and the QTH can be instantly viewed in the Maps application

Occasionally errors are made regarding core selection. This especially includes baluns, where on occasion some very strange ideas surface.

Looking for Hams that want to experiment on VHF/UHF PSK/digital modes

Ham Radio Livestream from Berlin, Germany.

WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

Amateur radio towers by Wade Antenna ltd. Wallmounts,masts and accessories, tripods, dmx self spporting towers, telescoping masts

Everything the antique Philco radio collector and restorer needs.

409 Shop is an Ham Radio and electronics online shop based on Hong Kong deliver worldwide. Ham Radio transceivers, batteries, swr meters, antennas and other ham radio accessories. Currently the shop seems to be out of business

ZScope oscilloscope software is free with the purchase of any ZTEC oscilloscope available in PCI, PXI, VXI, & LXI. Remote control ZTEC oscilloscopes.

When we think of Beverage antennas, we automatically think of several acres of land and lots of wire!

Traps can be one way round multiband coverage without the need of an atu. Learn how to homebrew your own traps