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Passive Air Band Monitor Kit ABM1 - All Spectrum Electronics
Passive Air Band Monitor Kit *NO LONGER AVAILABLE / DISCONTINUED*
Model # ABM1
 $88.95 
Passive Air Band Monitor Kit
Click to enlarge
*NO LONGER AVAILABLE / DISCONTINUED*

Monitors The Entire Aircraft Band...
WITHOUT ANY TUNING!

  • Monitors the entire aircraft band without tuning!
  • Passive design, can be used onboard aircraft, no local oscillator, generates and creates no interference whatsoever!!
  • Great for air shows!
  • Patented circuit and design!
  • Do it yourself electronic kit, or factory assembled and tested ready to go

For decades we have been known for our novel and creative product designs. Well, check this one out! An aircraft receiver that receives all nearby traffic without any tuning. It gets better... there is no local oscillator so it doesn't produce, and can't produce, any interference associated with all other receivers with an LO. That means you can use it onboard aircraft as a passive device! And what will you hear? The closest and strongest traffic, mainly, the one you're sitting in! How unique is this? We have a patent on it, and that says it all!

This broadband radio monitors transmissions over the entire aircraft band of 118-136 MHz. The way it works is simple. Strongest man wins! The strongest signal within the pass band of the radio will be heard. And unlike the FM capture effect, multiple aircraft signals will be heard simultaneously with the strongest one the loudest! And that means the aircraft closest to you, and the towers closest to you! All without any tuning or looking up frequencies! So, where would this come in handy?

  • At an air show! Just imagine sitting there listening to all the traffic as it happens, even the unknown frequencies!
  • Onboard aircraft to listen to that aircraft and associated control towers
  • Private pilots to monitor ATIS and other field traffic during preflight activities (saves Hobbs time!)
  • Commercial pilots to monitor ATIS and other field traffic as needed at their convenience
  • General aircraft monitoring enthusiast

Wait, you can't use a radio receiver onboard aircraft because they contain a local oscillator that could generate interfering signals. We have you covered on that one. The ABM1 has no local oscillator, it doesn't, can't, and won't generate any RF whatsoever! That's why our patent abstract is titled "Aircraft band radio receiver which does not radiate interfering signals". It doesn't get any plainer than that!

What about an air show? The ABM1 is the perfect solution to communications monitoring! A lot of unknown frequencies are used between the ground and each plane flying. Listen to air-to-air, the air boss, PA talkthrough and the stunt planes with ease! With a normal receiver you need to know the frequency and tune into it. The ABM1 simply hears the activity as it occurs, perfect for an air show... should be standard equipment for all the spectators!

Then there are the private and commercial pilots! A lot of private pilots rent aircraft. With an ABM1 they can listen to field traffic and ATIS broadcasts before firing up the aircraft avionics; this saves on Hobbs time (inactive rental time!) and is convenient! Same with commercial pilots. Your access to ATIS and other broadcasts can be as close as your flight bag, briefcase, or pocket!

The receiver is in a compact case complete with a belt clip. Just plug your favorite pair of headphones or the provided set of ear buds into the receiver, turn it on, and you are now monitoring all local aircraft! A squelch control is even provided to mute background noise and interference! The receiver runs on a standard 9VDC battery (not included). You will hear all nearby aircraft, ground transmissions, local control towers, and any other traffic within the frequency range! Here in Rochester while I'm writing this web page I'm hearing local aircraft overhead calling Rochester Approach and Cleveland Center, and just heard the local News Chopper!

Even with its compact design, we designed the ABM1 for easy construction by the electronic hobbyist. Thru-hole parts are used for all customer assembly. Several SMT components are part of the circuit, and they are pre-installed at the factory! Where's the antenna you ask? The headphone wire is your antenna! We even discuss a couple of component changes you can make to optimize performance with other than normal lengths of headphone wires. A professional set of stereo ear buds is included with the ABM1 to get you listening quick! You can also use your favorite set of Walkman type headphones with the ABM1. A factory assembled and tested SMT version with additional shielding for adjacent channel overloading is also available for the aircraft professional that just wants to get listening quickly.

If you're a private pilot, commercial pilot, airport worker, aircraft enthusiast, attend air shows, or spend a lot of time in airports or onboard aircraft, the ABM1 is for you.

Specifications:
Frequency Range: 118 MHz to 136 MHz
Receiver Type: Patented Passive Detector
IF Frequencies: None!
Receiver Sensitivity: Less than 2 uV for detectable audio
Audio Output: 700 mW, 8-24 ohms
Headphone Jack: 3.5mm stereo phone
Power Requirement: 9VDC battery
Dimensions: 2.25" x 2.8" (PC Board)
2.5" x 4.6" x 9" (Case)
Weight: 4 oz. with battery

Files:
User and Assembly Manual in PDF (ABM1.pdf)
This product was added to our catalog on Thursday 21 June, 2012.
Reviews *NO LONGER AVAILABLE / DISCONTINUED*
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