lp filter

G3SEK's Amateur Radio Technical Notebook - A lot of good informations concerning antennas, filters, moonbounce, and circuitry data.

Hybrid Antennas - Antennas that use a combination of vertical and horizontal polarisation.

Short Vertical Antennas and Ground Systems  ^pop - This article describes how an effective ground system can be produced for a short vertical antenna.

Whiskey Alpha DX group - "Formed in 1996 in the USA, the ""Whiskey Alpha"" group has members in a few different country's and is growing every day. We provide all members with a ""personalized"" QSL card design. Membership has no annual dues, and is for life."

Sierra Alpha Lima DX group Slovakia Priority listing - New SAL DX group 330 division Slovakia

Charly Alpha Dx Group - Spanish web site of Charly Alpha Dx Group (Italy)

Azteca DX Radio Group - The Alpha-Delta group is a group dedicated 100% to DX Oncemetros in the band and can say that is 100% of Mexican origin.

The GOLIST, QSL manager list - Source for Qsl manager routes. GOList has been helping DXer's like yourself with QSL routes for those elusive DX Stations since 1980.

Ham University - Ham University is the premier Windows program for helping you pass your FCC Exams.

Workman Electronics - Amateur radio accessories, power supplies, tvi filters, speakers, microphones, swr meters, preamplifiers, switches, cable and connectors,

WIMO - All kinds of antennas, RF connectors, radio transceivers and accessories like power supplies, morse keys, lowpass filters and so on.

Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.

Davis RF - provide electronic and electrical wire, cable, RF connectors, DSP audio filters, rope, non-conductive guy cables for aerial or tower support; plus sundry aerial related parts

Timeware tech. - Amateur Radio Products, Noise Reduction Filters, Data Controllers, deviation meter, Software, DSP-RTTY

INRAD International Radio - Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

Heros Technology Ltd - HF Radio Preselectors,BCB filters,Low Pass filters,Band Pass filter

Bencher Inc. - Paddles, Keys, Filters, Antennas

RMS international - RMS International, italian distributor of Alcava batteries and power supply, since 1975 manufacture power amplifiers, watt meters, antenna tuners, TVI filters and other accessories for hams and cb radio

AEA - AEA Technology Inc. is a pioneer and leading manufacturer of RF and cable test equipment for the wireless, Telco, CATV, NMR & MRI, RFID, telemetry, aviation, commercial, military, and two-way radio industries. Produces SWR Meters, Pre Amplifiers, filters, power meters and antenna testing products

Phonetic Alphabets - Phonetic Alphabets historic, English and others, such us NATO phonetic alphabets , - Q, X, Z codes, abbreviations.

Novel filter for sat working - Elimiate QRM when working with satellite antennas

ProsKan KA1LPA - Dual screen, supports AVT modes,16 Milions col, auto call insert facilities.

NuTest - NuTest is a complete XP/Vista compatible training package that will help you obtain or upgrade your FCC Amateur Radio License by passing the written theory tests. It creates interactive on-screen and printed tests using the official ARRL/FCC question pools.

Ham University  ^pop - Ham University includes Morse Code lessons, graded exercises, and a game. Windows program for helping you pass your FCC Exams, contains all the questions for all three FCC written exams. You can browse the questions, quiz yourself on your weak areas, or set yourself a mock exam.

K1TTT Technical Reference Priority listing - Technical reference about Accessories, Amplifiers, Antennas, Cable and Connectors, Filters, Geography, Grounding, Gunk, Matching Networks, Projects, Propagation Info Radios, RFI/EMI, Rotors, Station Setup, Towers.