rf hop calculator

A magnetic loop antenna for HF  ^pop - Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. Most parts needed can be purchased at a hardware shop. The antenna can be put together in an afternoon and requires only hand tools to assemble. It should cost less than sixty dollars to build. by Peter Parker VK3YE ex VK1PK

Cutting Jig for VHF/UHF yagi elements  ^pop - If you want a top-performance VHF/UHF Long Yagi, you will probably have to build it yourself.

VHF/UHF Long Yagi Workshop  ^pop - Yagi plans and notes for 6m, 2m, 70cm and 23cm

Build A Tin Can WiFi Antenna - Build a tin can waveguide WiFi antenna in one hour. Then put it on a 18" inch direct tv dish. No coax signal loss. Use a USB device on antenna. Complete instructions to build this powerful wlan antenna

WinLink 2000 - WinLink 2000 employs Stations World-wide to provide an HF/VHF/UHF digital radio Interface into the Internet Email system for the mobile radio operator. Features include binary and graphic file attachments, APRS position reporting and over 340 downloadable WX products. The mode used is Pactor I and Pactor II.

SGC, Inc. - Manufacturer of HF transceivers, antenna couplers, antennas, RF Power amplifiers, portable antennas, speakers and other accessories for 28 years.

MARS Antennas - MARS, Israel's Antenna and RF System manufacturer, flat antennas for cellular, military broadband, multiband MF high power antenna

Nil-Jon Antennas - Performance Compact Antennas VHF/UHF mobile and base for ham, business, landmobile, police, fire, satellite, APRS, simplex, repeater, TV, FM, scanner or monitoring use.

Poly Phaser - Data, RF, video protectors coax combiner protectors, grounding Items

HD Communications - Rf Connectors,RF Amplifiers,RF Filters,HF cable and accesories. Tower hardware valves and tubes

Kiwa - Filters and performance upgrades for many receivers

Tigertronics, Inc. - Packet/telemetry modems, GPS tracking, sound card interfaces

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

Grid Locator and Grid Square - About grid locators and grid squares, includes links to locator and grid square calculators

Maidenhead Locator Calculator - On-line calculator for Maidenhead locator calculations. It will work out your Maidenhead locator if you supply it with map references or calculate map references from your locator code.

US Frequency Allocation Chart - Colorfull radio frequency spectrum allocations in the US, in PDF Format

CBC International CB Radio - "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."

RF Limited - CB and Ham Radio accessories

GridX - GRIDX, a BASIC program that calculates grid squares and Great Circle headings and grid.exe, a grid locator calculator

Squares - Grid Square and Distance calculator by w3km

Qgrid - Maidenhead grid squares calculator, and bearing and distance program

RDCP/Mac - RDCP/Mac is a communications software package to interface your Macintosh to models of Kantronics TNCs. RDCP/Mac uses the Kantronics HOST mode allowing simultaneous connections on VHF packet and the HF digital modes when using the KAM.

KA Win - KaWin supports multiple Kantronics˝ TNCs and multiple radio transceivers with an intuitive, graphical interface, setting a new standard of performance for digital radio communications.

Gain receiver performance - Tips for those who wish to gain another level of performance from their receiver

Sound card interfacing  ^pop - PC sound card interfacing for RTTY SSTV PSK31, collection of interface connections to choose from when having a desire to use the Soundboard