spectrum lab

19 elements Low Temperature 144MHz LFA Yagi Priority listing - This antenna has been deisgned using the very latest PSO techniques available today. There is simply no other 2m antenna of this boom length with better Sly Temperature or G/T figures.

432 MHz Antenna comparison chart - An extensive comparison chart for 70 cm antenna designs elaborated by DF9CY

ARRL Contest results database - The results from ARRL contests are available here.

Euro QSL Bureau - European Radio Amateurs' Organization (EURAO) QSL Bureaus Network with the strong commitment to make available, whenever possible, to all radio amateurs their QSLs at no extra cost other than shipping and handling, without any kind of restriction

The Amateur Television Network - Fast Scan Amateur Television in Alabama, Arizona, Northern California Southern California, Georga, Illinois, Indiana, Kentucky, New Mexico, Nevada, Texas, Washington, Delaware, Maryland, New Jersey, and Pennsylvania.

DL 3BAA online Radios - Tune and listen an ICOM IC761 or a IC PCR-1500 made available by DL3BAA from SW Germany

Onlinereceiver from Zwolle Holland - Controllable Icom PCR100, 10kHz-1300MHz AM,FM,WFM. live from Zwolle - Netherlands

Eagle 1st - US made, accessories for the RF laboratory; including Return Loss Bridges, high performance coaxial cable assemblies and test filters.

Hans Summers Shop - QRP Labs QRSS Transmitter kits, and QRSS Keyer chips for sale.

VLF Group - Starlab Very low frequency group

Ham Radio and morse Fonts - Amateur radio windows fonts with slashed zero and Phi also listed some morse code fonts available to download

New England Repeater Directory - New England Repeater Directory (NERD) is the most accurate and up to date amateur radio repeater database available in our region. It is maintained by local volunteers of the amateur radio community. The listings are a reflection of each repeater's true status, regardless of their coordination

How to Measure Receiver Sensitivity - Testing an Elecraft K2 sensivity using a signal generator, headphones and an AC Voltmeter

LZ3HI QSL printing - Printing QSL cards, postcards, advertising materials, bussines cards, calendars, stickers, t-shirts, gold printed advertisements, rubberstamps, and QSL lables from Bulgaria

Buying a shortwave receiver - This article will provide an overview of the different types of receiver available and the associated pro’s and con’s.

EasyAudioStreamer - EasyAudioStreamer is free windows software that allow you to easily stream to the network any audio source connected to any audio device available on your PC.

SK6AW iPhone DX-Cluster - Android & iPhone DX-Cluster, works well in most browser. Supports iPhone push notifications via pushme.to and E-Mails. Spot filtering and skins available. Very flexible.

Audio Kit for iPhone - Audio Kit is a collection of four iphone applications which are essential for those working in audio and sound. A real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a sine wave Signal Generator.

Multimode - A new app for Ham Radio running on IPhone and IPod touch. Multimode is a modem for RTTY BPsk31 & QPsk31, with spectrum analyzer and Macros for easy operations.

50 MHz Amplifier by F5MAG - Home made 6m amplifier with GI7B, by F5MAG available in French English and Spanish

QRP Tuner Plan - A Simple and Flexible Tuner for QRP Craig LaBarge, WB3GCK

The Pixie and Micro-80 - QRP HF Transceivers, Tiny, direct conversion CW transceivers using just a handful of readily available parts.

Identifying sources of radio frequency interference - This page describes the results of some tests with a portable spectrum analyzer in attempt to identify the sources of RFI around the house. Radio interference was found in a number of unexpected places.

KK7UQ Interface - Complete design and construction manual of the mode II, printable labels, templates and info to interface digipan

SARK100 Antenna Analyzer - The SARK100 Antenna Analyzer it is yet another antenna analyzer but available in kit form and designed to be easy to assemble and with an affordable pricing.