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

6 Meter DX Map with reports from the VE7CC DX Cluster

8 and 4 elemets yagi beam antenna by N6CA

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.

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.

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

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

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

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

These web receiver based in Kiew Ukraine show PSK31 activity on 20m band 14.070-14.074 MHz remotely by using a web browser. Requires java by the MixW team

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

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

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

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 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

This very large moxon antenna resonate on 80 40 and 10 meters, has been used for CQWW 2006 by a YU team project

WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.

A guide for users of Ubuntu amateur radio software General support of Amateur Radio using Ubuntu /Linux.

The webs premier Ham Radio discussion forums

A 446 Mhz J-pole antenna

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

Manufacturer of popular TinyTrak APRS Tracker offer Packet radio tools, wxtrack interfaces, TinyTrack3, a GPS position encoder, PicCon controller for transmitter hunting, GST-1 and GST-2 GPS format converters, and PeekPack, a packet radio monitoring tool.

Create - Reliable antenna and antenna rotators from japan. Manufacturer of amateur radio products, HF VHF UHF antennas, antnena towers, antenna rotors, HF Log Periodic Antennas, VHF UHF wideband amateur radio antennas

K4TR Manufacture and sell simple dipoles, half square 2 wire phased vertical arrays, end fed zepp antennas, G5RV antennas. 1:1 baluns

Tennamast design and manufacture a wide range of fabricated metal goods, Antenna masts, Wind-sock masts, and masts for holding such systems as CCTV, Loudspeakers, Lighting units

Java script antenna calculators for ground planes, half wave verticals, quad antenna, 5/8th wave vertical antenna, dipole and inverted vee antennas

Comparison chart of most popular VHF UHF amateur radio transceivers

Frequency Filer is database program designed for people who use a great many different radio frequencies. It is primarily intended for amateur radio operators, short-wave listening enthusiasts and scanner users. The program makes it easy to keep all of your important frequency information in one place, displayed in a logical format to facilitate easy retrieval. Frequency information can be displayed as a list and can be viewed on a world globe. Other features include easy data backup and custom field names. Included is database import utility that can be used as a general file conversion utility. The globe display can also be used as general geographic aid for countries, cities, states, rivers, and lakes. You may even find your home town. Windows Shareware

Packet Modems, tnc, portable tnc manufacturer

Freeware by AE4RV. MorseQuiz is a Morse Code Speed Trainer for DOS/WINDOWS that can help you improve your code copying ability.

Winnipeg police scanner live, requires registration

Pc sound card interface for PSK31 MFSK Baudot for the yaesu FT-817

Yaesu Kenwood, drake MFJ JPS JRC AOR Daiwa Hygain Weltz Uniden Lowe Black Jaguar Trident dealer

Full line of VHF/UHF handheld and and mobile transceivers and accessories

Amateur radio dealer, scanners and accesories Burnaby, BC, Canada

Pictures of GAP Titan DX vertical antenna assembled by IW5EDI

About collinear array antennas

These are 200 Morse Code QSO`s which might typically be heard on the HF bands.

CB radios, VHF transceivers, scanners antennas and accessories

Notes on bazooka antennas by Katunk: a portable field antenna, sometimes called the double bazooka or a coaxial antenna.

The CWCom application, a free software utility for Windows, facilitates Morse code communication over local area networks or the internet. It provides functionality for both transmitting and receiving CW, with an integrated capability to translate incoming Morse code into plain text and encode outgoing text messages into Morse code or a visual flashing light sequence. This feature allows operators to engage in CW communication without requiring prior knowledge of Morse code. The program has been tested and confirmed compatible with _Windows 10_ operating systems. Its core utility lies in enabling real-time text-based chat, where messages are converted to and from Morse code, offering a unique digital mode experience. The software's design focuses on accessibility, providing a bridge for those new to CW to participate in Morse code exchanges.

Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.

A youtube video of a Short Delta Loop antenna, only 8,5 meters per side. This project use a loading coil of 56,7 uH for electrical matching.

Lets you automatically record your favorite radio programs from Web Radio broadcasts, and then listen to them later on your PC, MP3 player or Pocket PC.

An cheap homemade azimuth and elevation rotation system using an Arduino/AVR.

This is a group for discussing Yaesu's great VX-7R handheld amateur radio.

Welcome to the Ham Radio Shack of V31MD at Palmetto Place Guesthouse. The Shack is available for rent on a daily or weekly basis.

Hand held portable, 6 meters and satellite antennas