430 mhz portable yagi

3 Element Antenna for 28 Mhz  ^pop - The DF9CY three-element antenna for 28 MHz by Christoph Petermann DF9CY

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

GM3MXN Magnetic Loop Antenna - This article describes a loop usable from 7 - 21 mHz, using half inch copper tube 3 feet in circumference

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

1270Mhz Yagi Antenna - Build your own antenna for the 23cm band ( 1250Mhz - 1280Mc ) using some aluminium and this simple design.

A simple Wi-Fi Yagi - Add two parasitic elements to the sleeve dipole of a Netgear Router

CTJ Contest Software - By 9H1EL, supports RSGB 21-28, BERU, IOTA contests, FOC marathon and IARU 50MHz trophy, Control of FT1000MP, all Kenwood and ICOM Radios which have CAT system.

N6UN Beacon - San Diego Beacon 28.290 Mhz

SP5XMU Tom - Everything about 50MHz in Poland

Polish 50MHz pages - All about 6m in Poland incl.: people, contest, awards, etc.

PSK31 Web Receiver - 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

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

GB Antennas and towers - HF VHF/UHF yagi and quad antennas, towers and headphones manufactured in holland

900MHz telephone frequencies - Frequency table for 900Mhz phones

Hidden Transmitter Hunting - Lots of information of hidding transmitters, building portable yagi antennas, s-meters, and much more

KG4YZY / N4SCF Repeater System - Information and a photo album of the KG4YZY 146.760mhz and N4SCF 442.650mhz repeaters in New Port Richey, FL. System is linked 24/7 into the NI4CE regional system. Online streaming & echolink online.

Satellite Frequency list - Satellite frequency list from 3 to 8475 Mhz

E-layer & Sporadic-E - Two modes of propagation at 50MHz E-layer & Sporadic-E by Ken G4IGO

FT-950 mod - expand TX - Yaesu FT-950 MARS/CAP extend transmission to 1.8-30Mhz and 50-54Mhz.

VHF-DX - VHF-DX for Win95/98 is a VHF/UHF Logging Program specifically designed for 50MHz and above operation.

Fastlog - Fast and easy logger freeware by I0XGR , Alberto Guerra for windows

432 MHz EME PreAmplifier - 432 MHz EME low noise amplifier. Circuit, components and image by Christoph Petermann DF9CY

Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok

50 MHz Transverter idea - Complete 144/50 MHz transverter with GaAs Fet LNA and 400 mW out. No printed circuit board. Schematics and images by Christoph Petermann DF9CY