AWI is the leading developer of aviation weather measurement systems and air traffic management solutions.

Frequently Asked Questions

The following are some of the most frequent questions asked by our customers.  If you don't see your question below, or simply need additional information, please contact us at +1 (916) 928-1000 or email us by clicking here.

AWOS - Automated Weather Observation Systems

Is the All Weather Inc. AWOS certified by the FAA?

Yes! You can download a copy of the AWOS 3000 certification letter here.

How long does it take to get an FCC approved frequency for VHF radio transmitters or UHF data link radios?

Approximately 6 to 12 months.

What types of connections are allowed between the DCP and CDP?

Depending on the distance between the DCP and CDP, the customer may choose RS-232, RS-485, or UHF radio connectivity.

What is the output power rating for AWI's VHF radio transmitter?

AWI's VHF radio transmitter has a 5 watt output.

AWOS reports all data missing, what do I do?

Reset the PC and the peripheral Interface and see if it comes up. Make sure the breaker for the DCP is not tripped. The display inside the DCP should be ON and you should be able to scroll up and down using the keypad. If the AWOS is using UHF radios for data link, make sure the transmit and receive lights are flashing. If the AWOS is using a landline for its data link, make sure the voltage is changing every 5 seconds on TB4 -9 & 10.


What are the power requirements for AWOS sensors?

Power requirements for AWOS systems are detailed in our site preparation manual. You can download the site preparation manual specific to your AWOS level here.

The following table can be used to help electricians perform wire size calculations, and solar power requirement calculations.

DCP (plus BP and MARS)7.128W
900 MHz Radio5.02W
2040 Ultrasonic (not heated)0.72W
2040 Ultrasonic (heated)120W
20201 (heater for 2020 & 2030 sensors)20W
UHF Radio1.2W
Heated Rain Gauges325W
8339/8340 Ceilometer (no heaters, no blower)25W
8339/8340 Ceilometer (with heaters, no blower)200W
8339/8340 Ceilometer (with heaters & blower)700W
6490 Present Weather Sensor (heated)50W
6500 Lightning Sensor20W
Visibility Sensors (no heaters)10W
Visibility Sensors (heated)210W
Ambient Light Sensor (heated)100W
Central Data Platform (CDP)300W



I think I need to send my equipment in for repair.  Who do I need to contact?

Contact AWI at +1 (916) 928-1000 and ask for Customer Service.  If we cannot solve your problem over the phone, you may be given a Return Materials Authorization (RMA) number and instructions for shipping your equipment.  Any equipment or parts returned to AWI without proper RMA documentation will be refused.

What is AWI's standard warranty period?

New systems, sensors, and parts carry a warranty period of one year from commissioning of the system, or 18 months from the date of shipment.Systems, sensors, and parts that have been repaired after the new product warranty has expired, will be warrantied for 90 days from the date of re-shipment.  All repair warranties are limited to the repaired portion of the equipment.For a full description of AWI's warranty policy, please see our policies section.

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