REPORT OF A DEVICE CREATING RADIO NOISE ON AMATEUR RADIO BANDS

ARRL uses this form to receive reports about devices that create radio frequency interference to amateur radio equipment. Please fill out the form and then click the SUBMIT button to send this information to ARRL.

If you are experiening harmful interference and want to start a case with ARRL and receive individual help with an interference problem, read the information on ARRL's RFI web page, then contact us by telephone or email for assistance.

Note on recording the RFI: It is helpful to provide us with a recording of the noise you are experiencing, and you can upload any recorded files to the RFI Program's Sharefile Folder. Please make sure to include your callsign in the file name for each uploaded file.

When making recordings of the RFI, the recording should be at least 15 seconds in duration, and be recorded for both AM and SSB modes, sitting on a single frequency in a ham band, and with no pre-amp, noise attenuation or voiceover. If you can provide a something in the frequency domain (e.g., from a spectrum scope), that can be helpful to us as well.

Name*

First NameLast Name

CALL SIGN (If unlicensed, type "none.")*

Address of the radio receiver receiving interference:*

Street Address

Street Address Line 2

CityState / Province

Postal / Zip Code

Email, so we can contact you with questions. (If you don't want to provide an email, type "none.")*

example@example.com

Phone Number (optional, if you want to be contacted by phone).

Please enter a valid phone number and indicate a good time to call.

Please provide a good time to call. Someone will get back to you within a few business days.

ARRL can best help you if you are knowledgeable about Radio Frequency Interference. Here are some helpful links and resources concerning RFI:

Tell us what amateur bands and modes are being affected. Describe the noise level on each band in S units or dBm, the receive mode (SSB, CW, AM, etc.), and the bandwidth of your receiver (if known). Use a separate sentence or paragraph for each band.*

What is the maximum level of the interference?*

Date(s) interference was observed (separate with semicolons if more than one). You can also use descriptions such as "continuous" or "heard for several months."*

Times of day interference was observed (separate with semicolons, or indicate 24 hrs)*

Does the interference occur at the same time each day on a regular basis, as if on a timer, or timed with rising/setting of the sun? Describe.*

Is the interference relatively constant across each band, or does it appear stronger on some frequencies than another, at regularly spaced intervals? Describe in words. Tune about 50 kHz of the band to make this determination.*

Is the interference from a device in your own home, a neighbor's home or unknown?*

Manufacturer and model number of the noisy device (if known).*

Where was the noisy device purchased or where it is being sold*

Is this noise also affecting reception on the AM-broadcast band?*

YesNoUnknown

Does the noise change with weather conditions (e.g., temperature, wind, precipitation)?

Briefly describe your station - radio make/model, antenna type(s) and configuration (e.g., height, type, feed line, tuner), etc. Also estimate the distance from your antenna(s) to the suspected noise source.

What other information should ARRL know about the noisy device and its interference?

Would you like individual help from ARRL staff to resolve an interference problem? If yes, ensure that you provided an email address or telephone number.*

YesNo