Winter 2026 Station Information Profile (SIP) on File with Nielsen
| Call Letter: | WSJP-AM | |
| Frequency: | 1640 | |
| Station Name: | RELEVANT RADIO 1640 | |
| Format: | Religious | |
| Network(s): | IND | |
| City of License: | SUSSEX | |
| County of License: | Waukesha | |
| Mailing Address: | 680 Barclay Blvd Lincolnshire, IL 60069 |
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| Phone: | 877-291-0123 | |
| Fax: | 9208843170 | |
| URL Address: | www.relevantradio.com | |
| Broadcasts in HD: |
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| Internet Streams: |
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Winter 2026 Reminder:
You no longer need to submit program information to Nielsen.
To view the simulcast combos that have requested Total Line Reporting, click here .