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Simple and cheap antenna for 40/80 meter band in Italian

Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

The Yaesu VL-1000 Quadra HF Linear amplifier

This drawing shows a simple 10 meter wire J-pole antenna designed for 28.4 MHz. It is a vertical, end-fed Zepp-style antenna made from common materials and intended for easy home construction. The main radiating element is a straight length of stranded copper wire, either 14 or 18 gauge, cut to about 16.5 feet. At the top, the wire is supported by an insulator, allowing the antenna to be hoisted vertically. The matching section is made from 450-ohm ladder line, approximately 7 feet 9.5 inches long, and shorted at the bottom. This matching stub transforms the impedance so the antenna can be fed with coaxial cable. The feed point is tapped about 6 inches above the bottom of the stub, with the shield and center conductor connected at the proper points. A choke balun is formed with five turns of RG-58 coax in a 4-inch diameter loop to help reduce unwanted RF on the feed line. The drawing notes that this antenna has about 0 dBd gain, similar to a dipole, but offers an omnidirectional pattern and low-angle radiation when installed high. Its main advantage is practical performance, simple construction, and effective coverage for 10 meter operation.

IC-R2 programming utility v1.01 Rel. 04.02.99

Step-By-Step Construction of a 4:1 Current-Type Guanella Balun by W1CG

This sketch will read RF power and SWR from any SWR bridge, designed to work on VHF UHF bands

A program to design and print QSL cards on your computer, as well as design QSL cards for printing by commercial printers. This program overcomes many of the limitations that are present in other QSL design and print programs and methods. Works on Windows 7 to 10.

Uniden Official web site

Programs for hams written by Alex Shovkoplyas

A freeware HF propagation prediction tool, that interface the VOACAP tool by Alex VE3NEA

Antennas, Filters, accessories, wattmeters, tuners and amplifiers.

manufacturer of solutions for worldwide wireless broadband communications

W7TDC modification of the Ameritron AL-80A power amplifier

A free (GPL) Linux (Xwindows GUI-based) utility that performs spectral analysis on real-time data from a sound card or other source, and can analyze the spectra of various sound file types. It can also accept data from many kinds of applications in plain-text form by way of the "named pipe" feature of Linux

Windows application that will allow you to perform calculations with the popular Maidenhead Grid Square system. This grid system is used worldwide by amateur radio operators for many aspects of ham radio.

A program to control a repeater using an old computer and printer or serial port.

2 m. Band VHF Collinear with 2 Dipoles by sv1bsx

The complete status of the FT-817, FT-847, FT-857, FT-857D, FT-897 or FT-897D memories can be read into the computer and saved to disk. Any saved file can be subsequently reloaded into the computer and sent back to the rig. This facility uses these rig's ability to clone configurations from one rig to another using the serial port.

Long range Wi-Fi antennas you can build. Helicals, parabolics, and biquads discussed. How to add external antennas to WUSB54GC and F5D7050 usb wireless adapters for long range connections.

KSM Kenwood Smart Memory is a program to read and update the memory channels of a Kenwood amateur radio. The current supported types are: TS-450S, TS-570D, TS-570S, TS-690S, TS-870S, TS-940S,TS-950S.

The _59+ Log_ software, part of the 59+ collection, functions as a logging tool for Windows operating systems, specifically tested on Windows XP where its logbook feature operates smoothly. This collection also includes _59+ CW_, a module designed for Morse code operations, enabling keying of the COM port for transceiver control or simply listening to CW signals via the speaker. The software package, originally hosted on idealog.net, is now available for download as 59soft14.zip (3.4 MB) from IW5EDI's site. While the logbook application is functional, the _59+ CW_ application may encounter issues on newer Windows versions, as indicated by a failure to start on Windows XP during testing. The analyzer and convert modules within the 59+ suite require registration and do not operate in trial mode. Development and support for this software have been discontinued.

2 element Quand antenna for 10 - 12 - 15 -17 - 20 meters band

This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.

9Y4DD's Dave 14 MHz home-brew MOXON antenna project

Constructing and designing full size, single band stacked yagi antenna arrays

Primarily CB-oriented, but a source for microphones, scanners and other items for Amateurs.

SDR software for SoftRock40 freeware by Alex VE3NEA

A QRP antenna tuner for 20 meters band

Radiomobile is an excellent and very detailed radio path mapping software, vhf uhf propagation predictor. This windows free software is a tool used to predict the performance of a radio system.

QRP and Homebrew HAM Radio by DL2FI and DL7NIK QRP Made in Germany and more QRP Kits, qrp transceivers, accessories, mini keyers dealer for antennas, atu and more accessories

"CB books, plans, and kits. Repairs, modifications, 10-Meter conversions, amplifiers, FM, unique high-performance accessories. Publishers of the classic ""Screwdriver Expert's"" Guide book."

This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. It's a good choice for repeater installations and can be top, or side mounted to the tower by WA6SVT

HF amplifiers manufacturer maker of HF-2000 RF power amplifier

An interesting article about homebrewing antenna traps for multiband antennas by VE3GK

A solid state amplifier for HF and 6 meters band by N4IP

A detailed drawing of a VHF UHF Log periodic antenna by VA2PHI

IARU band plan comparagraph

Homebrew a j-pole 2mt and 70 cm antenna project. Make it cheap. This article includes homebrewing instructions, parts lists, tools needed and printable documentation.

Midland Consumer Radio, Inc. is one of the most experienced and respected names in radio equipment. Midland offers the broadest line of CB transceivers in the industry, Amateur radio transceivers, VHF marine transceivers, VHF power amplifiers, and RF equipment for the broadcast industry.

More than 80.000 datas of antique radios, pictures and plans. European and US-Radios.

Service information, manuals, diagrams pictures and schematics, and technical files on Cobra Radios

Plans, photos, electrical and mechanical design for this HF Log periodic antenna.

Presindet Electronics produces all mode CB bands transceivers, antennas, and accessories.

Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"

AALog v3.9.0 Build 1288 is a Windows-compatible logging program for amateur radio operators, supporting Windows 2000 through Windows 10. It integrates with CwType, CwGet, TrueTTY, and AAVoice for CW, RTTY, PSK31, and voice operations. The software facilitates online and offline QSO entry, duplicate checking, antenna direction, and distance calculations to DX stations. Key features include managing multiple logs under a single callsign or for different callsigns, and extensive award tracking for DXCC, WAZ, P-75-P, WAS, WAJA, JCC, JCG, WAIP, Russia, RDA, DPF, DDFM, WAU, and WPX, with user-definable award additions. It includes a built-in QSL-manager database, locator grid support, and detailed prefix lists. The program supports export to ADIF and text files, and import from ADIF, LoTW reports, Cabrillo, and AATest formats. External database integration is supported for Buckmaster HamCall CD-ROM, QRZ CD-ROM, RAC CD-ROM (Flying Horse), and Russian Internet Callbook. QSL manager databases like GoList, QSL Routes, and WinQSL are also compatible. The software package for v3.9.0 Build 1288 is 10,630,589 bytes.

A few hours of fun with PVC and wire and you have got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire.

The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters

How to build an Hexagonal antenna in 3 hours

The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.