This definition appears very rarely
See other meanings of SPN
We have 122 other definitions for SPN
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Samples in periodicals archive:
These include the Learning Channel, USA Network and the Satellite Program Network.
The facility currently distributes the signals of superstation WTBS, Satellite Program Network and all SSS vertical blanking interval and audio subcarrier services, including Keefax National Teletext Magazine, CableText data services and SCAN (Satellite Cable Audio Networks).