newark pd

A dual band wire beam for 17 and 12 meters - This wire beam Moxon antenna offers double duty on 17 and 12 meters with one 50 Ω feed line by Allen Baker, KG4JJH

160-meters antenna problems and solutions - Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file

ZR6KMD 2M Beam Antenna - This design was adapted from an article in the ARRL Handbook and built with simplicity and duplicity in mind. This antenna is a vast improvement over a standard dipole with a forward gain of around 8db with a front to back ratio of 10db.

A 40 meters DDRR Antenna - A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article.

Reversible Beverage Array - Building a reversible beverage array at OH2BEN

Baluns on Log Perodic Antennas - Some antenna manufacturers place baluns at the incorrect location in LPDA arrays. If we consider what the balun does we can see how the mistake occurs.

The K9AY Terminated Loop - A compact directional receiving antenna

How to build the K9AY loop - This document provided by AT technologies explains how to build the K9AY loop receiving antenna.

Flat plate aerial for 23 cm - This is a simplified design for /P aerials yet offers about a +12dBd gain on 23 cm

The ZS6BKW Multiband HF Antenna - Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands It’s only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead

HF CW contest calendar Priority listing - Calendar, rules and results of top rated CW HF contests with daily update by LZ1GL

Official CQ countries and Zone List - Official, and updated CQ Magazine Countries and Zone List available in various formats, text, word and excel formats.

ARRL US amateur radio bands - Color US ham radio band plan in pdf format edited by ARRL

Ham Radio Terms - This glossary contains general definitions of typical amateur radio terms

US grid square map - A pdf file of US grid square map by Icom america

ITU Zones map - A PDF File of ITU zones made available by Icom America

Getting started on RTTY - A complete guide from the station setup, rtty software customization, tips on tuning rtty signals and setting the proper audio level and filters by Andrew G8GNI M5AEX

Alinco Manuals - Alinco Instruction manuals on the Internet mostly on PDF format

Ameritron manuals - Manuals section for the Ameritron HF amplifiers mostly in PDF format

Kenwood manuals - Many of Kenwood’s instruction manuals are available for download. Manuals are in PDF.

DK9IP - A Band Decoder for the TS-850 - A Band Decoder for the Kenwood TS-850 HF-Transceiver by Winfried Kriegl DK9IP/KH7CD (April 2001)

TS-850 service manual - Here is the Service Manual for the Kenwood TS-850 Transceiver split into four parts for download. TS-850 instruction manual also available

A low cost dummy load - This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.

Diplexer design notes - Standard diplexer design is based on singly-terminated Butterworth filters.

YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.