plan 28mhz

Homebase10 Antenna for 28MHz - The Homebase10 is a simple to make wire halo antenna for 10m (28MHz) built using parts available from the local DIY store.The resulting antenna is very effective on 10m despite its small size and light weight.

W1AB Killer Antenna - An elevated ground plane sized as a 40 meter antenna but fed with ladder line and antenna tuner for hf and 160 meters.

6m Umbrella Ground Plane Antenna - 6m Ground Plane Antenna from Beach Umbrella by N0EQ

Dual Band Yagi 28Mhz and 50Mhz Priority listing - NO Traps or coils, NO matching required. Direct 50 Ohm feed. Easy to build and nothing else like it! Enjoy 50/28 with one feedline to a dual band high gain Yagi by G0KSC

Inverted V Dipole for 10 15 20 meters - Inverted V Trapped dipole antenna for 14MHz, 21MHz and 28MHz ham radio bands.

Bent Dipole with gain - Bent dipole plan by G8MNY

Hentenna Applications - Plans and measurements to build the Hentenna antenna for HF bands and for the 6 meter band

Hentenna for the 6m band - An Hentenna plan for six meters band

Hentenna by IW3HZX - Hentenna plans and pictutes for HF and VHF UHF Bands in italian by IW3HZX

J-pole antenna for 915MHz - A 915 MHz four bay j-pole antenna plan

EWE Shortwave Antenna - What is an EWE Antenna, comparisons, performance and homebrew plan

The EWE Antenna - EWE Antenna plan with a 9:1 balun

The Optimum 6 Element Yagi-Antenna - A 70cm and 2m 6 elements yagi antenna plan based on the IEEE Transactions on Antennas and Propagation

Cushcraft Trap - Coaxial Capacitor Repair - Repairing coaxial capacitor on cushcraft trap. Parts are no longer available from the manufacturer, home repair is the only option.

HF BandPlan by RAC - Canadian HF Bandplan by RAC in pdf format

GB Antennas and Towers - Dutch Antenna and Tower Manufacturers from Slimline Square Triangular Round Towers. Antennas production include Yagi Monoband/Dipole/HF Quad /50MHz and 70MHz Yagi-Quad, VHF-UHF yagi-Quad and Comby antennas VHF/UHF/SHF

Propagation Planning for DXpeditions - 6 Steps for a More Successful Trip by Carl Luetzelschwab K9LA

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

Explanations of LDE - 15 possible explanations for Long Delayed Echoes by University of Oslo

Magnetospheric ducting as LDE cause - LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz

PExprt - Tool for magnetic component design and modeling. Design and modeling of magnetic components such as inductors, planar transformers and integrated magnetics used in power-electronics applications.

CHIRP - CHIRP is a cross-platform, cross-radio programming tool. It works on Windows and Linux and MacOSX. It can program many popular radios and exchange data between them includin Icom Kenwood Yaesu Alinco Wouxun Puxing Baofeng

10 11 meters RF Power Amplifier - AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz)

The Ideal 28MHz Beacon - What constitutes the ideal 28MHz beacon from the listener's perspective by G0AEV

OZ2CPU digital wattmeter - Plans and hex code for an RF wattmeter based on an Analog Devices AD8307 log amplifier.