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RF401A 900 MHz Spread-Spectrum Radio

The RF401A is a 900 MHz radio designed for license-free use in several countries, including the United States and Canada. It provides a hassle-free way...

RF450 900 MHz, 1 W Spread-Spectrum Radio

The RF450 is a frequency-hopping, spread-spectrum radio that operates within the 902 to 928 MHz license-free band. This 1 W radio provides a solution for...

FAQs

How does a spread-spectrum radio work?

Spread-spectrum radios work by frequency hopping and transmitting at discrete frequencies over part of the unlicensed band, rather than by transmitting over a very wide part of the spectrum as some other devices do.

Can a spread-spectrum radio be used to connect two computers without a datalogger?

Yes. Two spread-spectrum radios can be used to connect two computers.

Is there a recommended RF filter for removing local interference while using a spread-spectrum radio?

No. Removing the interference will remove the radio signal. The radio, like all FCC Part 15 devices, is not allowed to cause harmful interferences to licensed radio communications and must accept any interference that it receives.

Is an individual FCC license required to use a spread-spectrum radio?

No. A spread-spectrum radio, like all FCC Part 15 devices, is not allowed to cause harmful interferences to licensed radio communications and must accept any interference that it receives. 

Resources and Links

About Spread-Spectrum Radios

Spread-spectrum radios spread the normally narrowband information signal over a relatively wide band of frequencies. This allows the communications to be more immune to noise and interference from RF sources such as pagers, cellular phones and multipath. Spread-spectrum radios do not require an individual license nor frequency coordination through a regulatory agency. Higher receiver sensitivity and signal processing help to compensate for lower power compared to UHF or VHF systems transmitting 5 W.

Our spread-spectrum radios provide wireless data communications, and support point-to-point and point-to-multipoint datalogger communications. They can serve as a field modem/radio while connected to the datalogger, a stand-alone repeater, or as a base-station modem/radio when connected to a computer.

FAQs for

How does a spread-spectrum radio work?

Spread-spectrum radios work by frequency hopping and transmitting at discrete frequencies over part of the unlicensed band, rather than by transmitting over a very wide part of the spectrum as some other devices do.

Can a spread-spectrum radio be used to connect two computers without a datalogger?

Yes. Two spread-spectrum radios can be used to connect two computers.

Can a spread-spectrum radio be used as a repeater in an RF telemetry network?

Yes.

Is there a recommended RF filter for removing local interference while using a spread-spectrum radio?

No. Removing the interference will remove the radio signal. The radio, like all FCC Part 15 devices, is not allowed to cause harmful interferences to licensed radio communications and must accept any interference that it receives.

Is an individual FCC license required to use a spread-spectrum radio?

No. A spread-spectrum radio, like all FCC Part 15 devices, is not allowed to cause harmful interferences to licensed radio communications and must accept any interference that it receives. 

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