extended double zep

H Doublebay Antennas - Cheap and EZ to build Bi-Directional VHF & HF antennas with gain

Double-L Antenna For 80 and 160 - A vertical antenna for 80 and 160, fed with a single feed line that is simple, effective, and requires no ground system.

Extended Slim Jim Antenna - Extended Slim Jim Antenna Project For 2 Meters

Slink-ette antenna - A Slinky-based doublet or loaded vertical QRP antenna tested for 40 meters band by N2CX and N2EI

2M 6M Jpole - A jpole antenna plan for 51 mhz and 146 mhz

Double Quad Antenna - 435 MHz double quad antenna by F5WN

Double Bazooka by K4JRG - A double bazooka antenna for 80 meters band

Double-Bazooka - Broadband dipole antenna, needs an antenna tuner but can reach 3db gain over dipole by WB6PFH

Double Bazooka Antenna - A Bulgarian bazooka antenna project by LZ2ZK

Double Bazooka - A monoband antenna with large bandwidth in french

Stacking broadside collinear - One popular rumor or thought is that antenna gain doubles every time we double the number of elements

Doublet Antenna for 80-10m - Doublet multiband antenna for 80 to 10 meters band by G3RWF

80-10 m multiband wire antenna - G8OFZ multi-band antenna for 80-10m, this antenna appears to be a derivative of the Doublet and the Classic G5RV

Double Quad For VHF UHF - Double quad wire antenna for the 2m and 70cm band. Each of the two squares is the size of a wavelength by DF7DJ

Extended Slim Jim Antenna Project For 2 Meters - A slim jim for 144 MHz

88' Zig Zag Double Extended Zepp - A Double Zepp indoor antenna based on Cebik's reccomendations and design.

Antennas 101 - Dipoles, Doublets and Verticals by Rob May NV5E

Five eighths wavelength vertical antenna - The basics of a five eigths wavelength vertical antenna, a form of RF antenna widely used for mobile radio communications applications

Double Quad ATV antenna - A 13 and 23 cm double Quad antenna plan and pictures for ATV

23cm double bi-quad - Construction of a 23cm double bi-quad antenna

Doube Zepp extended antenna - An extended double zepp antenna by F5ZV in french

The vertical Double-Zepp - The vertical Double-Zepp 2x7 m is a very simple, effective 8-Band-antenna. The end of the Dipol must be 5-10 m above the ground

All Band HF Doublet - All Band HF Doublet for operation over all HF bands including 160m.

Double Tone IQ-Generator - Easy to use double tone IQ-generator for testing direct conversion SSB-transmitters based on phasemethod etc.

Bandpass and I.F. Filters - On this page a popcorn highpass filter, some inductors and their Q , double tuned bandpass filters and simple Cohn Crystal ladder IF filters are presented.