fet mixer

Bravo Bravo DX Club - Intern. DX Radio Group has worldwide members, founded 1980 offers lifetime membership

Auxiliary Communications Service - State of california, governor's office of emergency services, ACS program. bulletins, newsletters, .ftp & .pdf, links & more on public safety auxiliary communications.

Three Rivers Radio Club - 10 meter SSB club, Free lifetime membership. We are in the St. louis area, but we also welcome hams from the whole USA.

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

ScanMuncie.com - ScanMuncie.com, Serving the City of Muncie and Delaware County, Indiana with Public Safety Radio Scanners and Online Interactive Forums Available 24 hours a day

Gisela Dierking NF/HF-Technik Germany - Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more

CONEX - DTMF Remote Controls, DTMF tone generators and broadcasting products, remote broadcasting via cell phone, cell phone mixer and remote phone keypad

Nally radio towers - Radio towers with designs made specificaly for Amateur Radio operators, incorporating mounting plates for most common rotators with in tower structure allowing for safety in the use,and tilt over preventing the need for climbing towers during regular maintance

American Tower Company - Manufacturer of self supporting towers. 10 to 200 feet. Residential, commercial, Wi-Fi, safety and communication.

Safe Mobile Operations - Safety suggestions on operating and setting up amateur radio mobile station.

NAVTEX - The NAVTEX system is used for the automatic broadcast of localised Maritime Safety Information (MSI) using Radio Telex (also known as Narrow Band Direct Printing, or NBDP).

South East Michigan Scanner Page - A resource for scanner owners in the Detroit metro area, and surrounding counties. Featuring frequencies and information about public safety scanning.

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

Northern Electronics, Inc. - Offers 2 way commercial radios to public safety, fire, police. Also has battery database

Radios Online - Public Safety, Aviation, Military, Federal Scanning & HF Information

Amplifier Simulation Program - ASP 4.0 - Design weak signal GaAs FET or bipolar PreAmps. Automatically designs for optimum gain, NF, VSWR or all.

Transistor Specifications - Transistor Specifications, ``RF Power Mosfets ¹ HF VHF transistors

IK4AUY Sergio - Advanced QRP Low Cost Mosfets HF Linear Amplifier with schematics, IMD, gain data and more. Six articles about amateur radio.

2m Band VHF antenna pre-amplifier - Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981 Dual-gate MosFet. Gain ~15 dB, NF=1dB.

144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.

MGF1302  GaAsFET - Published in Radioamater - CQ YU and CQ ZRS magazines, MGF1302 144 MHz and MGF1302 432 MHz

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.

Grounding Systems for Hams - Grounding Systems for Amateur Radio Stations, Safety grounds vs. radio frequency (RF) grounds, the practical station ground

50 MHz Transverter idea - Complete 144/50 MHz transverter with GaAs Fet LNA and 400 mW out. No printed circuit board. Schematics and images by Christoph Petermann DF9CY