rf preamp

RFI Archives - RFI mailing list at contesting.com

WEFAX - Weather and Amateur Facsimile - arrl wefax pages with members only articles such as FAX480 and SSTV Interfaces and Software, contains also a few links to wefax related web sites

FT-1000MP Band Select Output and Amp Keying Interface - FT-1000MP Automatic Band Selection Interface Bob Wolbert, K6XX

ptelnet - ptelnet is a powerful communication software for the Palm Computing platform, By using the built-in TCP/IP stack (telnet mode), it acts as a Telnet Client. By accessing the serial (RS232 or IR) port directly (serial mode), it acts as a standard Terminal Emulator. Freeware

QRG_DB1 - QRG_DB is a database for the Palm OS computer to control a Yaesu FT-817 Transceiver via the CAT interface

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

Icom interface box - interface box for Icom rigs that includes a band output port and a CI-V­to­computer serial interface

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.

Interference Handbook - Interference to home electronic equipment is a frustrating problem; but, fortunately, there are several ways to deal with it. This handbook provides a step-by-step process for eliminating the interference

ARRLWeb: Computer EMI - How track and solve electrical interference from you computer

EMI from RF-Driven Lamps - Information about RF driven lamps

General Information about RFI/EMI - RFI/EMI RadioFrequency interference/electromagnetic interference by ARRL Technical Information Service page

FCC interference handbook - This is the electronic version of our "Interference to Home Electronic Entertainment Equipment Handbook"

Telephone Interference - Telephone EMI, questions and answers on how to solve interference problems to phone lines

RFI Information Page - This page gives information about Radio Frequency Interference, the unwanted reception of radio signals. You'll find out how to determine what is at fault (the transmitter or the receiver) and what you can do in either case.

EMI from Lamps - Radio Frequency Interference To/From touch lamps and dimmers

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

Electromagnetics, EMI, EMC, EME, RFI - RADIOING eEngineer RFI EMI information

Ham Radio Online - Computer Networking RFI - This page is to provide links to resources and information regarding technologies to reduce computer interference