Tektronix 2710 Analyzer
Spectrum Analysis of both Audio and RF is a great way to detect problems, spurious components, and on some, modulation levels, like FM Deviation. With Peak Markers, it's possible to scan a band of frequencies looking for activity, very useful to determine if VHF or UHF repeater frequencies are being used.
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Hopefully as this progresses, I'll have information on Scopes, Analyzers, Software spectrum analyzers, Service Monitors, Antennas, etc.
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To be Announced