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Based on VK5BR's Z-Match and designed for High RF Power covers 160 to 10 meters by VK6YSF

Phased array Ground Planes antennas for 144 Mhz

This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL

Table of frequency allocations international & US by Bill McFadden

Import/export of cb transceivers, antennas, speakers, power supplies, etc. Firestik, sirio, sadelta, hustler, boomerang, president, k-po, shakespeare, danita, k-40, wilson, midland

Download ex1726 a 32-bit DOS radio control program for the ICOM M700PRO, M710 and M710-R NMEA computer interface.

Wire antennas requires a special coupling network to properly couple my 50 ohm coax to the antenna's high impedance (5000 ohms)

Includes the PDF file of the General Class study guide by Dan Romanchik KB6NU free to download.

20 meters through 6 meters, antennas

Phased arrays of short vertical antennas. A technical notes from Butternut antennas on phased vertical arrays

the European equivalent of the Family Radio Service (FRS) in the U.S. and Canada, FRS/PMR? Why 2 standards?, What PMR radios exist? And how much do they cost?

This end fed type of antenna was marketted in the UK and is a useful system for the portable set-up. Being a half wave, no radials or counterpose wires are needed.

BroadWave Streaming Audio Software facilitates the broadcast of live and pre-recorded audio content over the internet, operating as a server on Windows PCs. It supports streaming from over 40 audio formats, automatically converting files for optimal delivery. The software allows for up to 8 separate live audio streams from a single PC and can serve up to 500 simultaneous listeners, contingent on available internet bandwidth. Listeners access streams directly through standard web browsers, eliminating the need for specialized client software. The free version, available for non-commercial applications, includes most features and does not expire. It supports recording live audio streams to WAV files and displaying the number of connected users. The professional version offers additional capabilities such as custom banner displays and integration with Zulu DJ Software for live mix streaming. System requirements specify Windows 7/8/8.1/10/11, with older versions compatible with earlier Windows OS releases. The application is designed for internet radio broadcasting, podcasting, and sharing live events, providing a direct method for **audio distribution** to a global audience without complex setup.

Radio Incident Command Kit project is described in this article loaded with many pictures and go-kit composition.

Dimension and formula for a 4 element QUAD antenna for the 10 meters band

Homebrew balanced-L antenna tuner. Covers 160-10m. Designed specifically for balanced feedlines.

The original G5RV antenna system consists of a center-fed horizontal 102' wire plus a 34' length of open-wire 525-Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website

W5ALT Indoor Vertical Antenna is a base loaded vertical antenna that can be tuned on almost all HF bands by adjusting a big coil. Operating a ham radio station from an apartment in Maracaibo, Venezuela, the author demonstrates effective communication with over 100 countries using a custom-built indoor vertical antenna. Addressing common misconceptions, the design uses a balanced approach with radials and a base-loaded vertical element made from affordable materials. The antenna fits discreetly indoors, covers 6 to 40 meter bands, and achieves acceptable SWR with an MFJ tuner. Despite limited space and typical apartment challenges, the setup enables reliable DX contacts, confirmed by numerous QSL cards, proving indoor antennas can perform well in constrained environments.

Input the desired resonant frequency and it will calculate lenght in inches feet and meters

Antennas that use a combination of vertical and horizontal polarisation.

Mose Trainer by G4FON is a free windows morse code training program developed using the Koch method. Sends words simulating real morse code transmission, with QSB and QRM, allow change speed tone and many other settings. Download the kochmorsetrainer_install file and start learning Morse Code.

Get started with SDR using a Raspberry Pi and inexpensive RTL-SDR tuner.

If you want an antenna resonoant on the 160 meters band this is a possible solution, but of course, need space.

Pictures of the 160 meters dipole antenna at W5JGV

A PIC16F876 microprocessor-based digital SWR/WATTmeter project provides automatic operation across the 1.8 to 60 MHz frequency range. This design displays both SWR and P.E.P. power values, incorporating a bar graph on the second LCD line for instantaneous power tracking. The directional coupler utilizes a single-wire coil on a ferrite FT50-43 toroid, balanced with a 60 pF trimmer, and employs 1N5711 Schottky diodes for detection, ensuring linearity and a power range of 5 to 120 W. The software, developed by IW3EGT, compensates for diode voltage drop for precise readings, updating power every two seconds for stable display of modulated carriers, while the bar graph updates ten times per second for near real-time feedback. Calibration involves two phases: adjusting the directional coupler for minimum SWR on a 50-ohm dummy load at 28 MHz, and calibrating the microprocessor system by inputting a calculated power value (Power (Watt) = (Vout + 0.5)^2 / 100) at 14-21 MHz. The project includes PCB layouts for both the directional coupler (two-layer copper board) and the PIC module (single-sided), with specific instructions for component placement and shielding to prevent RF interference. The design allows for modification of power reading capability by varying the number of turns in the coupler coil, catering to different power levels.

A free to download and print, log sheet in A4 paper format for amateur radio stations

Inverted V antennas is a dipole with the center raised on a mast and the endpoints near ground. Calculate dimensions online.

Titan custom engineered towers

Manufacturer and distributor of AOR equipment for England and Ireland.

5 Day prediction table for ISS and find when the ISS will be visible from your QTH by N2YO

Ubuntu software packages in "karmic", subsection hamradio

6 Meter DX Map with reports from the VE7CC DX Cluster

The webs premier site for custom ham maps (azimuthal equidistant projection maps) and great circle bearing/distant charts for the radio amateur. Customized azimuthal equidistant projection maps and tables.

A 40-meter reversible _Moxon rectangle_ antenna project details its construction and performance, featuring 51-foot long sides and 7.7-foot turned-in sections. The design incorporates a 16.5-foot boom, with elements spaced 1.1 feet apart, constructed from #14 covered wire. It utilizes two double-pole relays for switching between NE and SW directions, achieving F/B ratios up to 40 dB on CW and 30 dB on SSB, with distinct reflector stub settings for each mode. This antenna replaced a full-size 2-element Yagi, demonstrating comparable forward gain while offering superior F/B ratios and directional flexibility. _EZNEC_ modeling indicates only 0.2 dB less forward gain than the Yagi. The system uses no baluns, relying on half-wave feedlines and switched stubs for impedance matching. The antenna is tree-supported at 45 feet, with its effective radiation height modeled at 80 feet due to local terrain, enhancing its performance over a nearby lake.

Calculate the inductance of a single-layer, air-core coil.

The Joystick antenna was used many years ago as an all band vertical HF antenna under restricted space situations that would cover from 80 meters thru 10 meters with a tuner and was a great commercial success Some hams even had success with it on 160 meters.

8 and 4 elemets yagi beam antenna by N6CA

Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.

Signal generator using the PC soundcard to output continuous tone, CW, SSTV, AO-40 telemetry, and PSK31 test signals with variable AWGN. The program will also output to a RIFF .wav file by AE4JY

An attic indoor antenna successfully implemented by N9RET by using two runs of 2-conductor wire

DXSpotter is a commercial Win32 HAM radio application for working with DX Clusters by using TCP/IP protocol for communications. It is adapted to satisfy most DXer's needs. DXSpotter includes 2 programs in one: DXSpotter for connections via telnet protocol to more than 200 DX Clusters, and DXSpotter-Summit for connections to OH2AQ's WEB cluster DXSummit page with automatic page refresh Price USD 25

A shortened multiband antenna, about 23m long, for 80m - 10m bands with a low SWR (<1.3) on 80m and 40m, and < 3 till 10m. Bandwith on 80m is 300kHz

PPCMorse and PPCMorse Pro are Morse code traning/sending utilities for PocketPC PDAs (such as the iPAQ, Jordana and Cassiopea).

CW transceiver kits, QRP, frequency counters, QRP wattmeters, Dummy loads and QRP Parts

The "Largest YU Moxon" document meticulously details the design and construction of a substantial multiband Moxon antenna, primarily for 80m, 40m, and 20m operation. It presents specific design parameters derived from NEC-based simulations, including a 4-element 80m Moxon with 37 dB F/B and 7.81 dBi gain on a 47m boom, a 4-element 40m Moxon with a bidirectional pattern, and a 6-element 20m Moxon optimized for specific side lobes. The resource provides precise element lengths and spacing in meters for each band, alongside measured SWR results across the 3.650-3.800 MHz, 7.000-7.100 MHz, and 14.000-14.350 MHz segments. The construction narrative outlines the challenges and solutions encountered by the YU team, including the use of trees for support, the creation of "ugly" air-choke baluns from RG-58 cable wound on plastic bottles for each band, and the meticulous process of attaching wires to a rope boom. It documents the physical dimensions of the vineyard site (47 x 38m) and the azimuth orientation (340 degrees) chosen for the antenna. The document is distinctively useful for its practical insights into large-scale antenna deployment in a field environment, offering real-world SWR measurements and anecdotal performance reports from CQWW contest operations. It includes numerous photographs illustrating the construction process, the team members, and the finished antenna structure, providing visual context to the technical details.

Making a 4:1 balun with a nescafe coffee jar lid and a toroid

A 5 elements yagi antenna for 10 meters band project, plane and picture of the EF105A by YU7EF

The Elecraft K3, a popular HF transceiver, is often benchmarked against new market entrants. This article critically compares the Kenwood TS-590S to the K3, focusing on key technical specifications and operational aspects relevant to serious amateur radio operators. The author proposes three distinct evaluation methods: a circuit diagram comparison, an independent review analysis (referencing Peter Hart, G3SJX, in RadCom), and a real-world "ear test" by experienced contest operators on 40 and 80 meters. The analysis delves into specific receiver components, including the first mixer design, RF and IF amplifier performance, and the presence of an image noise filter. It highlights the K3's switched mixer and the potential for the TS-590S to utilize similar or improved designs, such as a classic filter with enhanced selectivity. The article also scrutinizes the second mixer stage, noting the K3's SA612 chip and its associated IP3 limitations, suggesting Kenwood might achieve benefits with a different mixer architecture. Further points of comparison include DSP capabilities, where the K3's high-performing DSP with KK7P's involvement is noted against the TS-590S's potential reliance on newer IC technology but possibly less refined software. The discussion extends to DDS and PLL implementations for phase noise and spurious emissions, and the utility of a second receiver for DX chasing and contesting, acknowledging its importance for some operators while being less critical for others. The article concludes by emphasizing personal preference in equipment selection.

A freeware dos antenna design program, dedicated to yagi antenna design by K4VX

WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.