Armstrong G1000 Dual Redundant Weather Radio Transmitter System    When the Armstrong design team began its work on a new transmitter for the National Weather Service's NOAA Weather Radio Network we were clearly focused on its Life Saving Mission.

We understood the need: Build a transmitter with exceptional reliability which was user friendly, easy to maintain and incorporated necessary innovations to provide NOAA with the best possible signal audio on a continuous basis.

Finally it had to be done within budget to give NOAA and its Cooperators a cost effective solution without losing sight of the primary objective: "To Save Lives".

Armstrong's Team of designers created the most robust RF platform possible to ensure the uninterrupted "On Air" presents of the Life Saving NOAA audio signal.

We adopted a modular sub assembly approach that allows all sub assemblies to be used in all three-power levels of transmitter systems. This approach minimizes field maintenance, parts and life-cycle costs. Modules are easily accessible, parts are readily available and replacement is fast and simple.

To ensure uninterrupted service a microprocessor-based system controller monitors all system parameters and automatically switches to the stand by transmitter should conditions warrant. Additionally all system parameters can be monitored and controlled remotely using a computer with a modem.

Our remote diagnostic software allows the technicians to query the transmitter system, not only to check the "ON AIR" transmitter's complete operational status but to also check the secondary transmitter, without interrupting the "ON AIR" signal. This keeps NOAA's message on the air uninterrupted.

Our team then looked at the real world RF environment. We needed to take every step possible to ensure the transmitter would not cause interference with other RF equipment and that other equipment did not interfere with NOAA life saving audio programming reaching the public.

We incorporated a dual band pass cavity filter with a 1/4 wave stub into our design. This not only serves as additional lightning protection for the transmitter, but it is the final key in providing a filtering system which
exponentially decreases the chance of interference even in high RF environments.

We also added a Digital audio processor to provide NOAA with the clearest and cleanest audio signal, on the air, as was technically possible. The increase in transmission clarity can make a "life saving" difference in reception quality, dramatically improving  a community's preparedness.

PDF Links to Antenna Literature 
(to download the files, right click on the link and choose 'Save Target As...', otherwise, left click to open)

NOTE: Due to the total size of the NOAA Literature PDF file it is being provided in two sections.

Armstrong Transmitter Corporation
4835 North Street, Marcellus, NY 13108
phone: (315) 673-1269 / fax: (315) 673-9972 / email: