| Author | Views | Views Today | Rank | Comments |
| 19,179 | 14 |   |
19 |
| Author | Views | Views Today | Rank | Comments |
| 19,179 | 14 | |
19 |
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The communications between commercial aircraft and the ground can be interesting, amusing and sometimes even disturbing. However radios that receive the approximately 220MHz to 400MHz band commonly used for aircraft (both military and commercial) are not easily found. And scanners can be complicated, large and expensive. With an easy to build circuit such as this one, everyone can enjoy listening in on these conversations. |
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| ATC is all Amplitude Modulation operating at the VHF - Anyone built this? What is it like? Can you hear any communications ? | ||
| please can i get a qualitative note on how this circuit works,its limits, its range and how it can be built. thanks | ||
| I have difficulties in finding the diode 1N82 (or NTE112 for a substitution as marked in comments) , I need help for finding more equivalent parts , please let me know | ||
| Audio output is not enough to drive a speaker. Use the audio out to drive a 1 or 2 transistor audio amp. Most air traffic between 108 & 135mhz is AM. This circuit is for 220 - 400 mhz. Im not sure if they use AM up there or not. Im also not sure civilian aircraft operate up there. I always thought that 220 - 400 was military. I hope this helped. kg6ath | ||
| sir, i want to set up this system for my school laboratary. i want more ground. and how it will be powered. | ||
| quite good, but is this practically applicable with low audio output speakers????????? | ||
| i want to do this project | ||
| Just curious, is there a way to simply modify a simple am/fm stereo to pick up aircraft bands? Also is the transmission in FM or AM? I've read documentation giving conflicting responses...I'd lean towards AM since the radios at work seem to pick up a lot of static when actually emitting sound (Noise reduction I believe helps this when not picking up a signal).....Oh and one other thing....I don't know about the rest of the world, but at least at my airport the comms range is from around 117 - 125 mhz (approach and ground) and goes as high as 140 mhz (airline ops)......Are those freqs for centers or as aforementioned? Thanks for the schematics though. | ||
| COMPONENT D1 IS THE WRONG WAY ROUND ON THE CIRCUIT | ||
| i want recever circuit | ||
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