band pass filter

40 thru 10 Meter Zepp Antenna  ^pop - A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information.

Low band antennas for 80 and 160m  ^pop - Antennae for the Low Bands, 80 and 160m

The Hustler 5BTV Conversion to 160 Meters - The prototype vertical is a modified Hustler 5BTV. The conversion allows the vertical to retain five-band operation by trading 80-meters for 160-meters

Balcony antenna extension - Balcomy antenna modification to cover top bands, by Harry Lythall SM0VPO

The Moxon Rectangle on 2 Meters - We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.

Build this Novice 4 band vertical  ^pop - Home made vertical antenna for 80 40 15 10 meters ARRL PDF file taken from QST June 1978

EH antennas for 50 Mhz  ^pop - EH antenna for six meters band by IW0BZD

Portable QRP HF Antennas - Notes on the end-fed half-wave antenna, single-band stub-fed EFHW and a multiband EFHW antenna

No tuner HF bands Center-Fed Antenna - HF Horizontal Center-Fed Antenna From W5DXP

The Lattin 5 Band antenna  ^pop - The antenna was named for W4JRW who invented it and holds a patent on the basic principle and uses quarter wave stubs, 80, 40, 20, 15 and 10 meter bands

Broadband receiving antenna matching - This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave (500 – 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.

Half-sloper antenna for 40-80 - K9CZB QST article about sloper antenna project for 40 and 80 meters band

Petlowany Three-Band Burner Antenna - a simple, low-cost, trapless short vertical antenna which amazingly works on three HF bands (20, 15 and 10 meters)

Vertical wide band 7-21 Mhz  ^pop - The RXO unitenna pdf file a vertical antenna for 40 to 15 meters band

Smithe Windom Six Band HF Windom antenna - HF Windom antenna, cover 80, 40, 20 15, and 10 meters, antenna design by K3MT

ZS6BKW Multiband antenna system - ZS6BKW optimized version of the venerable G5RV and different antenna placement on the roof and terrace by N4SPP

ARRL: US Band Plan  ^pop - Includes a downlodable colorfull or b/w US Band Plan in PDF Format

MicroHAM - CAT decoded Band decoder, remote Antenna switch

WL1030 Wideband Magnetic Loop - Wideband receiving loop for VLF LF HF 10 kHz - 30 MHz

W3FF Antennas Buddipole - The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.

Abc's of Shortwave portable radios Priority listing - An introduction to portable shortwave receivers and sw radio. What to look for in a good portable. Reviews of Sangean ATS505. Band info and frequecies.

DSP Controller - Bypass your sound card DSP prorgam to make transmitting much easier.

KawAZ Azimuth angle calculation - KawAZ shows the azimuth angle of target location from your location by figures and image of compass

iDXSpot - DX Spots announced by speech in phonetics (or plain). Connect to the worldwide DX-Cluster via the Internet easily. Calculates distance and bearing between Grid locators and sends Grid & distance. Hot buttons to see DX-Spots on specific bands. Editable Hot buttons. Easy switching between favourite DX-Clusters.

Microphone Wiring Diagrams  ^pop - Some mic wiring diagrams for ranger realistic alan, cobra, ge, uniden, yaesu, kenwood radios. Diagrams for the microphone connections on many of the common CB radios, as well as some popular Amateur radios.