14,21,28 mhz yagi

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

50 MHz Antennas by DF9CY (4 & 6 Element)  ^pop - Two well performing 50 MHz antennas designed with W7EL EZNEC along to many other antenna projects and related articles

G8VR a small Yagi for 50 MHz - Complete plans and drawings to build a Yagi for six meter band by Ken Willis, G8VR

T-Hunting Antennas  ^pop - 4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity

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

DF9CY - ZX15/4 extended 10/4 - A 4 element addition for 10m to an existing 4 element yagi (ZX antennas)

14CPI080-DT263 Christophe - personal page

WJ5O Beacon - TX on 28.289MHz since 1992

F5TMJ's web pages - Description of the F5TMJ/B beacon on 28.243 mhz. Pictures and propagation experiments. 6 meters repeaters listing.

National International Doublers Net - 7.278.6 MHz USA Canada and Mexico

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

DaveMade  ^pop - 25-30 MHz base and mobile amplifiers

Antenna Specialists  ^pop - Land Mobile, CB and scanner antennas, GPS, 800 and 900 Mhz antennas

Mosley Electronics  ^pop - Wide variety of multi-frequency Yagis, Verticals, and Dipoles as well as other single and multi-frequency configurations to meet specific requirements.

Cushcraft  ^pop - Cushcraft Amateur Radio and commercial antennas HF and VHF vertical and yagi antennas owned by MFJ.

Larsen Antenna - Complete selection of portable, mobile and base station antennas in frequencies from 27 MHz to 5.8 GHz. Radiall/Larsen also has a strong presence in custom OEM development. Radiall/Larsen Antenna Technologies is a subsidiary of Radiall.

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

The World above 1000Mhz - Microwave general web site by G3PHO

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

LA5MDA Yaesu FT-2000 review - Yaesu FT-2000 HF & 50 MHz transceiver review by LA5MDA

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

TH-D7 control program - This software allows you to control TH-D7 radio functions in real time, using a windows interface. This software will graph current activity of any 4mhz range, allowing the user to mouse click any active portion - automatically changing the radios frequency.

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