This satellite is part of the later Transit series of navigation satellites launched in pairs as "Stacked Oscar On Scout" [SOOS].
The signal is quite bewildering. There are several subcarriers below 1600 Hz, perhaps four. There seem to be two subcarriers at 2400 Hz and 3300 Hz. They do not really seem connected to the IRIG FM/FM subcarrier standard frequencies.
Click on the spectrogramme to hear the signal - familiar to the experienced space listener.
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