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VHF Airband - Receivers

Click to enlargeA Superregen Receiver by Rick Andersen
This is the receiver I was bragging about on the Radio index page -- the receiver that is so sensitive it can hear the local oscillator inside a small transistor radio 30 - 50 feet away.
http://www.ke3ij.com/superrgn.htm

Click to enlargeAM VHF PASSIVE AIR-BAND RECEIVER by VK6FH
The passive or non-emissive Airband Receiver is basically an amplified "crystal radio" designed to receive nearby AM aircraft transmissions (121 - 133 MHz).
http://www.vk6fh.com/vk6fh/amvhfpassiverx.htm

Click to enlargeAviation Band Receiver Schematic Diagram
shows a schematic diagram of the Aviation Receiver--a cool heterodyne AM (Amplitude Modulated) assemblage congenital about four IC's: an NE602 bifold counterbalanced mixer (U1), an MC1350 beeline IF amplifier (U2), an LM324 cloister op-amp (U3), and an LM386 audio amplifier (U4).
http://schematic-audio.blogspot.nl/2011/06/aviation-band-receiver-schematic.html

Click to enlargeNon-Emissive Air-Band Receiver by VK2ZAY
The circuit is only superficially different to Charles Wenzel's original design. The major departure from Charles' implementation is the use of the main tank inductor as a loop antenna.
http://www.vk2zay.net/article/247

Click to enlargePassive Aircraft Receiver by Charles Wenzel
The Passive Aircraft Receiver is basically an amplified "crystal radio" designed to receive nearby AM aircraft transmissions. The "passive" design uses no oscillators or other RF circuitry capable of interfering with aircraft communications so it should be fine inside the cabin of the aircraft.
http://www.techlib.com/electronics/aircraft.htm

Click to enlargeSuper-regenerative Air Band Radio by Pilar Ortega
Civil aviation still uses AM communications between 108MHz and 136MHz. It is fairly easy to build a receiver that operates on these frequencies, however, it will also be found easy to build a receiver that won’t tune high enough!
http://radio-receivers.blogspot.com/2016/05/super-regenerative-air-band-radio.html

Click to enlargeVHF Airband Receiver by PA3ANG
Listening to airplanes is and has always been a fascinating hobby. To do so, you need a good receiver. I decided to design and build a high performance and dedicated VHF-AM receiver. (we are talking 1994)
http://pa3ang.nl/wp/archives/201

Click to enlargeVHF Tracking Receiver by Jerry Baumeister
A superregenative receiver developed for tracking small FM transmitters but also tunes the aircraft band and the top portion of the FM broadcast band. Receives both AM and FM (107mHz to 135 MHz).
http://www.jbgizmo.com/page23.html


Creation date : 07/02/2010 @ 13:17
Last update : 06/09/2018 @ 19:49
Category : VHF Airband
Page read 49657 times


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