roof top tower

160m double L antenna - Planning and modeling a special L antenna for Top Band

Compact Top Band antennas - Modeling compact 160 meter antennas, inverted L, half wave dipoles and linearly loaded dipole

Ultracompact 160 Meter Antenna - A compact antenna for 160 meters, suitable for hams tha want operate top band buh have a limited space

SJ2W 160 meter antennas - SJ2W Contest Station, antenna for the 160 meter is a 39m vertical. This 160m antenna consist of 29m of WIBE tower sections with an insulated base and 10m top tube.

80m Vertical Loop - The configuration of this antenna is a triangle with apex in the top of a very tall tree. The antenna is fed at a bottom corner using 450 ohm ladder line.

160m Horizontal Delta Loop - A full size delta loop antenna for top band by PA3FUN

Portable Inverted V antenna - This Inverted V Antenna is based on a design by WE5Y which originally appeared in QST Magazine published by the ARRL. AIWM modified the original design in how the fishing poles attach to the mast, the top insulator, and length of the fishing poles.

Tee Vertical Antenna for the 630M Band - The conventional configuration was an inverted-L arrangement with the vertical section going up about 13m and then a horizontal top-load wire extending about 8m, the end of which was supported by a tree at about 10m.

KC5WA Tower erection - Picture gallery of KC5WA antenna tower setup

Radio Structures - Manufacturers and Installers of Masts, Towers, Antenna systems, Trailer Masts, Lattice Masts and Bracketry. Radio, CCTV and lighting masts, tower Refurbishments, safety surveys, mast tower inspections, safe to climb certification

AC0C Roofing Filter - Yaesu FT-950 and FT-2000 Roofing Filter Optimization and Improvement

Proto Panel - Proto Panel is the source of Custom Front Panel, Instrument Panels and Enclosures; Innovative in express instrument front panel prototyping and manufacturing.

TS-590 ALC Overshoot PAD MDS and IP3 - A DK5TX article on Kendoowd TS-590 ALC problem with ALC spikes and other interesting topics

TS-590S - QST reviews comments  ^new - Kenwood TS-590S QST review comments and table comparison vs Elecraft K3

Repairing Cushcraft A3S Traps - Notes and details on repairing Traps on Cushcraft A3S

Cushcraft A3S Refurbishing - Refurbishing my 10 years old Cushcraft A3S triband HF Antenna

ScopeIIR  ^new - ScopeIIR: an Infinite Impulse Response (IIR) digital filter design tool for Windows. It designs high-order IIR filters based on analog filter prototypes, and can design lowpass, highpass, bandpass, and bandstop filters.

Dentron Clipperton L linear Modification for 160m - Modifying Dentron Clipperton L linear for better Top Band operation

811 Linear Amplifier project - A lower power desktop linear with integrated 120vac power supply. This, very compact, dual 811 version will deliver about 300 watts output. Covers all bands including WARC bands.

CAT5e Wiring Diagram - CAT5 T-568B Colour Code for RJ-45 Plug

Notch Filter Designer - Online calculator, Butterworth Bandstop (Notch) Filter Designer