Collins 75S-1 S-Line Receiver

Collins "S" Line 75S-1 Receiver had sharp selectivity and exceptional sensitivity because of its advanced circuitry.  The Collins mechanical Filter achieved selectivity unsurpassed in radio technology,  Tuning range was from 3.4Mhz to 29.7Mhz in 200Khz ranges, and came with a built-in AC power supply and weighted 20 lbs.  

Pictured here is the 75S-1 Receiver with the Rejection Tuning accessory from Waters Inc. installed.   The tuning control in installed into the audio gain control position.  The audio control is moved the the RF Gain position.  Here a dual action control in installed for both the Audio and RF Gain adjustments.  On the chassis the Rejection Tuning/Q-Multiplier sub-chassis in mounted in the open position in the center of the chassis.  The Waters upgrade kit included front panel overlays that matched the receivers front panel.

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