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AM Receiver Circuits
Last Updated on: Thursday, April 07, 2016 01:01 PM

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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

118MHz to 136MHz aircraft receiver -  Schematic only, no circuit description. . .  [designer not identified]

1-transistor Regenerative AM Receiver -  A classic design revamped slightly. Features a single-transistor regen stage, and a range of 1000 miles with a 4-foot antenna. Perhaps the best "survival radio", yet. Now updated with speaker Amplifier. . . .  

AM Receiver -  This is a compact three transistor, regenerative receiver with fixed feedback. It is similar in principle to the ZN414 radio IC which is now replaced by the MK484. The design is simple and sensitivity and selectivity of the receiver are good. . . .  [Design by Andy Collison]

AM Receiver for Aircraft Communications -  This receiver is controlled by a Frequency Synthesizer Circuit.   The receiver is VERY stable, low noise-level and easy to build and tune. . .  [maxit91 AT hotmail.com]

AM Receiver with Quadrature Mixer -  This circuit is for a superheterodyne receiver where the image frequency is suppressed without the use of an input filter. Instead, it uses two NE (SA) 612 type mixer ICs that each work 90. must register on this site. . .  [Published in Elecktor July/Augu, 2010]

Am-Receiver for Aircraft Communication 118.250MHz -  This receiver is controlled by a Frequency Synthesizer Circuit.   The receiver is VERY stable, low noise-level and easy to build and tune. . .  [maxit91 AT hotmail.com]

Automicro RX3302 receiver module photo -  . . .  [Peter Jakab, Electrical Engineer, Engineer of Informatics]

Automicro RX3304 receiver module schematic -  . . .  [Peter Jakab, Electrical Engineer, Engineer of Informatics]

BCB Receiver without Coils -  The radio consists of two phase-shifting transistor stages (T1 and T2) and a RF Amplifier (T3). The gain of T1 is almost one (R4/R5). Phase shift of this stage is 90 degrees at a frequency determined by P2 and C4. The second stage (T2) is identical to the first; the frequency of 90 degrees phase shift (electroninc design). . .  

Build a Crystal Set (simple AM radio receiver) -  . . .  [by by Max Robinson]

Build a simple crystal set -  amateur radio construction projects. . . .  [from Peter Parker's website]

Designing an AM Receiver for Low Power Wireless Systems Using the NEC UPC2768GR IC 7/22/96  -  Application Note  Doc #921. . .  [California Eastern Laboratories]

High quality AM through your FM stereo -  amateur radio construction projects. . . .  [from Peter Parker's website]

More crystal sets -  Response to December's column was so favourable that we return to crystal sets and allied topics this month. Keep reading to find out how to improve your AM broadcast reception, make your crystal set deliver hi-fi audio and set a fashion trend with the all-new 'wearable wireless' pedestrian mobile crystal setamateur radio construction projects. . . .  [from Peter Parker's website]

One-transistor Regenerative AM Receiver -  A classic design revamped slightly. Features a single-transistor regen stage, and a range of 1000 miles with a 4-foot antenna. Perhaps the best "survival radio", yet. Now updated with speaker Amplifier. . . .  

Shortwave Audion -  It is a Hartley-ECO Audion, in which the plate is grounded for RF. Positive feedback from cathode to grid occurs via the coil tap. The amount of feedback is determined by the 100k pot; this controls the voltage at the screen grid and thereby the transconductance of the valve (higher voltage resulting in greater transconductance). . . .  

The Moorabbin regenerative AM receiver -  amateur radio construction projects. . . .  [from Peter Parker's website]

ZN414 Portable AM Receiver -  An AM portable radio receiver made from the ZN414 IC. The ZN414 ic has now been replaced by the MK484 which is identical in performance and pinout. . . .  [Andy Collison's website]

AM Receiver Circuits


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