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Radio devices - list of circuit diagrams
A complete AM radio set based on the MK484 IC (formerly ZN414). It uses a PNP transistor and can drive a 150R loudspeaker
author: Chad Castagana, Woodland Hills, CA visits: 204 
This is a VHF amplifier for the Band 2 Radio Spectrum tuning approximately 88 - 108 Mhz
author: Andy Collinson visits: 196 
This is a nice performer and will tune from the 22 meter international broadcasting band down to the 11 meter band.
author: Ramón Vargas visits: 195 
This is a wide band signal strength meter circuit which responds to small changes in RF energy, designed to be used for the VHF spectrum and will respond to AM or FM modulation or just a plain carrier wave.
author: visits: 192 
schematic for the 530 kHz to 1650 kHz AM Broadcasting Band
author: Ramon Vargas - Lima, Peru visits: 186 
This Field Strength Meter is simple and also quite sensitive. It uses an ordinary digital voltmeter to measure RF signal strength up to a few hundred MHz
author: Andy Collinson visits: 182 
A radio frequency amplifier to boost SW reception. Frequency range approximately 5 to 20 MHz
author: Andy Collinson visits: 181 
A small FM voice transmitter for Band 2 VHF
author: David Sayles visits: 176 
This circuit is designed to work at UHF frequencies in the range 450-800MHz. It has a gain of around 10dB and is suitable for boosting weak TV signals
author: visits: 173 
A circuit that has been found to work at full satisfaction in the frequency range from 10 kHz to 500 kHz
author: Ramon Vargas - Lima, Peru visits: 170 |
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