three phase emi filter

HF Helical Whip Calculator - Build your own HF helical whip antenna for mobile or portable operation

Delta Loop antenna - This DeltaLoop antenna has a length of 125 meters, divided into three sides of 40, 42 and 43 meters.

Multiband fan dipole antenna - A three-frequency multi-band dipole

Tuning HF Coaxial Antenna Traps - The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.

XU7KOH - Cambodia - XU7KOH Koh Russei Island IOTA AS-133 From 21/01 until 24/01

9Q50ON Online Log - 9Q50ON on-line log

5M2TT Online Log - 5M2TT Log Search Liberia 2011 dx pedition

Antenna Engineering - Antenna Engineering specialise in producing a range of high quality aluminium HF verticals ranging from mono band single element verticals to multi element phased arrays.

Clifton Laboratories - Band Reject Filters, Bandpass Filter, Active Antennas, amplifiers and preamplifiers

Cross Country Wireless - UK manufacturer of ham radio accessories, including TNX, SDR receivers, RF Diplexers Triplexers, bandpass filters, iambic memory keyers.

RF inquiry - Realization of confortable communications. RF Filters

FT2000 Filter Installation - Step by Step - Installing the NS Roofing Filter into the FT-2000

FTdx5000 Filter Setup and MARS mod - Installation of the 300 Hz Roofing Filter in the Yaesu FTdx5000 and MARS modification

ASAP Semiconductor - Electronic Component Distributor – ASAP Semiconductor is wholesale electronic component distributor in USA. We supply all types of electronic components like semiconductors, capacitors, resistors, diodes and many more.

AFR Enterprises - AFR Enterprises a leading distributor of electronic components, semicondustors, diodes, Resistors, Integrated Circuits across the USA.

DX Cluster for Android Priority listing - DX Cluster is an DX Cluster client for Android smartphones DX Cluster supports: Real time DX spots, Different band and mode filters, A country filter for spotter or the spots, Prefix or call sign alarms

TFilter - Free online FIR filter design - Free online FIR filter design application

Cute CW - Most morse code (CW) training requires you to learn everything at once without a training process. This application changes that and separates training into phases.

Single coax filter - Coax Stubs for filters to help separate stations

Semiconductors - Semiconductors, diodes and transistors, intregrated circuits

Stub HF filter - Multi transmitter filters for HF Bands

Power netfilter - Homebrew a Power netfilter

F6BQU - Transceiver for 80m - Home made 80 meters transceiver by SP5FCS using the F6BQU project

20m CW QRP Transceiver - The direct-conversion receiver uses an audio-based automatic gain control, an LC tone filter, and a 100-kHz crystal for frequency alignment. The same VFO is used for transmitting and receiving by DC1YB

Crystal tester - Crystal tester project, crystals are used to control the operating frequency of transmitters, and it is used in radio frequency converters, oscillators, filters for cw, ssb and many other applications.