band pass filter

80m 4 element delta loop antenna - A four element delta loop antenna for the 80 meter band providing a forward gain of 6 dBi by F5VKM

How antenna traps work - An interesting article about homebrewing antenna traps for multiband antennas by VE3GK

Fixed inverted vee antenna for 80m - Infos and plans for an Inverted V wire antenna for 80 meters band

Stacked Yagi Antennas - Constructing and designing full size, single band stacked yagi antenna arrays

A 10-element Yagi Antenna for Six - Long yagi antenna for 50 Mhz band

DX For Me - DX Cluster  ^updated - DXCluster which will allow mobile usage. Now able to manage filter per bands and mode, and to save configuration for specific DX or special event stations.

F9HS VHF EME - My hamradio activity : very high frequency communications using the moon as a passive reflector.

WebSDR in USA W4MQ  ^{updated  pop} - Internet Remote Base WebSDR radio receive from Reston, Virginia with remote control cover 160 40 and 20 meters band

TE Systems - Manuf RF power amplifiers wideband+narrowband for Commercial, Defense, OEM and amatuer markets. Also low-noise rf amplifiers

Eco Antenne  ^updated - Italian antenna manufacturer. Verticals, yagis, delta loops, mobile and wire antennas from HF up to VHF and UHF bands including ham radio CB and commercial product lines

PKW Antennas - PKW Antennas for ham radio bands, Quads, delta loops, log periodics antennas for military and professional use by Ditta Martelli fabbrica italiana antenne

Six Meters FAQ - Faqs on six meters band, designed to help encourage hams to use and enjoy this band

The german 6m homepage - One of just a few webpages for the magic band, see it from the german point of view.

Amrad LF operatoins - Lot of useful information on experiments on 136 Khz band, with antenna tips DSP infos and notes on their activity in LF.

CEPT ERC 136 Khz Recommendation - Use of the band of 135.7-137.8 kHz by the amateur service

RSGB HF Committee - LF Band activities section

49MHz Hobbyists Site - A website and email reflector for hobbyists in the unlicensed 49MHz low-power band.

OK1JKT Karel - Information about traffic on SHF, 10GHz band

CW Skimmer - Multi-channel CW decoder and analyzer for Windows 98/ME/2000/XP. Simulatneously decode ALL cw signals in the receiver passband - up to 700 signals can be decoded in parallel and extract call sign

SkedWizard Priority listing - "Sked Wizard is an applet designed to help radio enthusiast get more enjoyment from their available operating time, ships with a list of ""radio related"" world band programs"

EasiLOG - Log For the Radio Amateur on all bands from 180 metres to 24GHz by G0MDO

MacDSP - Digital filter for Macintosh computers with a PowerPC processor

Ham Radio Deluxe Logbook - HRD Logbook v5 is a freeware windows logbook program that offer full control of your radio, Rotor control, support for many db engines, multiple logbook, dx cluster client interface, band maps and solar status report and audio recording

Alinco DJX 10 software - MS-DOS programming software for use with Alinco's DJ-X10 Wide Band Communication Receiver

IK3OIL Ham radio homebrewing - A site devoted to Amateur Radio Homebrewing, CW-decoder, CW QRP Transceiver for the 40 & 20 meters band, CMOS reader