Non-interfering AM receiver for the 118 to 137 MHz VHF radio band used for air traffic control.Designed by Vortex Electronics in United States of America
What is it? The PABM1 Passive Air Band Monitor is a non-interfering AM receiver for the radio band used for air traffic control. It receives all nearby transmissions within the band used for voice...Read More…
The PABM1 Passive Air Band Monitor is a non-interfering AM receiver for the radio band used for air traffic control. It receives all nearby transmissions within the band used for voice communications between civilian aircraft and air traffic control centers.
FAA (Federal Aviation Administration) regulations generally forbid the use of receivers onboard commercial aircraft because a normal receiver's local oscillator can radiate signals that could interfere with aircraft communication and navigation systems. However, the PABM1 Passive Air Band Monitor directly detects nearby AM signals in the 118 to 137 MHz VHF (very-high-frequency) aircraft voice band without the use of internal oscillators, and thus cannot interfere with aircraft communications and navigation equipment.
This monitor operates on one standard 9V battery (not included). A pair of stereo headphones or earphones are required (not included).
WARNING: It is completely legal in the US to listen to Air Traffic Control (ATC) communications. However, listening to airband frequencies without a license is an offence in some countries (e.g., the UK). Please check local laws for the legality of possessing and using the PABM1.
Although the PABM1 cannot interfere with an aircraft's communication and navigation systems, always ask permission from the flight crew before using it onboard an aircraft.
A complete manual is available under "Specs and Docs" section.
To keep informed about what's REALLY going on while traveling.
In 1961, the FCC (Federal Communications Commission) prohibited the operation of FM receivers onboard aircraft since they were determined to interfere with the operation of navigation and communication systems. The FAA (Federal Aviation Administration) subsequently determined that other personal electronic devices could be potentially hazardous to aircraft systems if operated aboard aircraft and prohibited their use.
The reason normal receivers have the potential of interfering with aircraft communications is that they internally produce radio signals as part of the receiving circuitry. Standard receivers have one or more oscillators that produce radio signals used by the radio to tune to a specific frequency. Signals from these oscillators that escape the receiver may interfere with communication and navigation signals.
In contrast, the PABM1 Passive Air Band Monitor does not contain any oscillators or other radio-frequency sources that may radiate interfering signals. Signals picked up by the antenna are filtered within the airband and then directly demodulated to produce audio. The reason why this is not done in normal receivers is that direct demodulation makes it very difficult to tune to a specific frequency, allowing all signals within a band to come through simultaneously. In the case of our airband monitor, this is an advantage since no knowledge of the frequency used for air traffic control is necessary, thus requiring no tuning.
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NO WARRANTY, NO RETURNS
Each device sold by Vortex Electronics is inspected and tested at the time of manufacture. However, because of the nature of the devices, they comes with no guarantee. No warranty is issued, and returns are not accepted.
TO THE MAXIMUM EXTENT ALLOWED UNDER APPLICABLE LAW, THE DEVICES SOLD BY VORTEX ELECTRONICS ARE PROVIDED “AS IS” AND “AS AVAILABLE” AND VORTEX ELECTRONICS, ITS AFFILIATES, AND ITS ASSOCIATES MAKE NO WARRANTIES UNDER THIS AGREEMENT, EXPRESS, IMPLIED, OR STATUTORY, BY OPERATION OF LAW OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTIES ARISING OUT OF COURSE OF PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE UNDER OR IN CONNECTION WITH THE PRODUCTS. VORTEX ELECTRONICS DOES NOT WARRANT THAT ITS PRODUCTS WILL OPERATE ERROR-FREE, UNINTERRUPTED, OR THAT THEY IT WILL BE SAFE OR SECURE. NO ORAL OR WRITTEN INFORMATION OR ADVICE GIVEN BY VORTEX ELECTRONICS, ITS AGENTS, OR OTHER REPRESENTATIVES OR EMPLOYEES SHALL IN ANY WAY INCREASE THE SCOPE OF VORTEX ELECTRONICS’ WARRANTIES UNDER THIS AGREEMENT. WITHOUT LIMITING THE GENERALITY OF THE FORGOING, VORTEX ELECTRONICS DOES NOT MAKE, AND EXPRESSLY DISCLAIMS, ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, RELATED TO ANY THIRD PARTY INTELLECTUAL PROPERTY, TECHNOLOGY, OR INFORMATION PROVIDED AS PART OF THE DEVICES OR THEIR DOCUMENTATION.
DISCLAIMER OF LIABILITY
Vortex Electronics does not make any representations as to the completeness or the accuracy of the information contained herein, and disclaims any liability for damages or injuries, whether caused by or arising from the lack of completeness, inaccuracies of the information, misinterpretations of the directions, misapplication of the information, or otherwise. Citation of the various laws is only included for the purpose of reference and should not be construed as regulatory or legal advice.
UNDER NO CIRCUMSTANCES SHALL VORTEX ELECTRONICS, OR ITS AFFILIATES, PARTNERS, SUPPLIERS OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY ARISING OUT OF OR IN CONNECTION WITH THE USE OR INABILITY TO USE THE DEVICES THAT IT MANUFACTURES AND/OR SELLS WHETHER OR NOT THE DAMAGES WERE FORESEEABLE AND WHETHER OR NOT VORTEX ELECTRONICS WAS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, VORTEX ELECTRONICS’ AGGREGATE LIABILITY TO YOU (WHETHER UNDER CONTRACT, TORT, STATUS OR OTHERWISE) SHALL NOT EXCEED FIFTY US DOLLARS ($50.00). THE FOREGOING LIMITATIONS WILL APPLY EVEN IF THE ABOVE STATED REMEDY FAILS OF ITS ESSENTIAL PURPOSE.
Finally, Vortex Electronics is not responsible to the buyer, user, or third parties for any claim of special or consequential damages, in accordance to the previous disclaimer.
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