building pre micro

Compact Restricted Space 40 Meter Wire Antenna - An inexpensive easy to construct compact 40 meter wire antenna that will fit in a 20 feet by 20 feet space

W1GHZ Microwave Antenna Book - The W1GHZ Online Microwave Antenna Book online

How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"

The Daily DX - The Daily DX is the pre-eminent Internet DX bulletin. You will receive DX news that is instantaneous and unreliant on the US Postal service. Your DX news will be automatically delivered to your home or office by e-mail Monday through Friday, 50 weeks per year. Unlike other bulletins which may take 2-5 days to reach you, The Daily DX news arrives before the information is out-of-date.

Massachusetts Microwave Corporation - Provider of point-to-point microwave radio system sales, service, and integration, employing refurbished name brand digital (DS1/E1, DS3/E3) and analog video radios. Specializing in Microwave Associates (M/A-COM) , Digital Microwave Corp. (DMC/Stratex) and Alcatel/Rockwell microwave radios.

JWM Engineering Group - Top quality Microwave Phase Locked oscillators for DB6NT, DEMI and homebrew microwave transverters, and other support products.

GPS Time Series - The Global Positioning System (GPS) is a constellation of 24 satellites which is used for navigation and precise geodetic position measurements.

VLF Loop Antenna - A project on building a VLF loop antenna

Scanning Reference: WEFAX - The following very comprehensive list was produced by G6DOF and has been extracted from the amateur radio packet network

HF - VHF Radiowave Propagation Center - High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines. Solar Weather, Geomagnetic, Aurora, Ionospheric reports via eAlerts and webpage. WAP phone access. Live and educational resources, and more.

Newcastle Scanning - Newcastle Scan is the premier radio scanner site for Newcastle AUSTRALIA and a leader in live scanner feed, pictures and emergency recordings GRN INFO AND IDS frequencys

Eurofrequence Dierking in Germany - Accessories, like universal audiofilter, Mixer interface for sound card, highvoltage powersupply, accessories for 706, hamradio vacation,Roger Beep, Microphons, Headsets and more. Please look

AZMap - Azimuthal maps generator - AZMap is a freeware Windows program for the Windows PC which will generate, display, and print an Azimuthal-Equidistance (A-E) map of the world, centered at any point on the surface of the earth (except very near the poles). The A-E map is also known as a Great Circle map since straight lines from the center point to any other point always fall along a great circle path and represent the shortest distance between the center and that point

Morse Pilot - Morse Pilot is a popular and very comprehensive freeware Morse code tutor, trainer with decoder and encoder functions. Morse Pilot is intended for personal training, for example for radio ham or aviation examinations.

Orbitron - Orbitron is a freeware (cardware) application dedicaed to satellite tracking. Allow tracking of ISS, Iridium flares, ham radio satellites, International Space Station, satellite passes prediction, orbits, auto updates and alerting

SIGVIEW spectrum analyzer - Complete real time signal analysis software with wide range of powerful FFT spectral analysis tools, statistics functions and comprehensive visualization system.

Audio Preamp - Easy circuit that provide good gain to weak audio signals

Ferrite information - Ferrite Toroidal Cores, Magnetic Properties of Ferrite Materials, EMI - RFI Suppression Design Considerations, Ferrite Beads, Ferrites for RFI Ferrite Cores for RFI Suppression by CWS ByteMark

LNK Receiver Preamp - It is tempting to hope that a preamp can make any receiver more sensitive, in any situation. But, it is important to understand what happens when you add a preamp before a receiver.

23cm dual stage preamp - A modification / combination of the DJ9 BV & I5TDJ 144 MHz preamp designs

Motorola Micor Highband Preamp - Make 150.8 - 174 Mcs. RF Preamp properly tune the Two Meter ham band.

Low noise preamplifiers  ^pop - Lot of projects of preamplifies from HF to VHF and UHF by yu1aw

U301 FET preamplifier - This FET preamplifier has been around for almost 25 years. It is extremely reliable and can handle several watts directly into either the input or the output without failure.

23 cm GaAs FET preamplifier - On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures.

Using ferrites for interference suppression - This tutorial is meant to shed some light on the use of ferrites, and also presents some comparative frequency domain measurements both to illustrate some of the points, and to give designers an idea of what they might expect in using and specifying a ferrite component