ESC

STA-235

BrandRealistic
ManufacturerRadio Shack
FunctionAmplifier, Integrated, Radio Receiver
Produced1977
CountryJapan
Model IDAM/FM Stereo Reciever
Form FactorDesktop
Signal PathAnalog Hardware
Dimensions48.6 × 13.3 × 34.3 cm (W × H × D)
Power120v AC
Frequency Response20-20,000 Hz ±2 dB
Power Output (WPC)55 (Minimum RMS at 8 ohms from 20-20,000 Hz)
Signal-to-Noise ratio65 dB (Phono); 80 dB (AUX)
Phono Input Overload160 mV
FM TUNER Sensitivity (IHF)2 microvolts
Capture Ratio2 dB
Total Harmonic Distortion @ 1000 µV0.5% stereo, 0.2% mono
AM TUNER Sensitivity200 microvolts/meter for 20 dB S+N/N
Channels2 Channel
Connections
  • Phones · 1/4" Phone Jack (6.35mm)
  • Dub Out · 1/4" Phone Jack (6.35mm)
  • AM Antenna · Binding Post
  • 300-ohm FM Antenna · Binding Post
  • 75-ohm FM Antenna · Binding Post
  • Phono Ground · Binding Post
  • Phono · RCA (Phono, Cinch)
  • AUX · RCA (Phono, Cinch)
  • Tape Monitor 1 (In) · RCA (Phono, Cinch)
  • Tape Monitor 1 (Out) · RCA (Phono, Cinch)
  • Tape Monitor 2 (In) · RCA (Phono, Cinch)
  • Tape Monitor 2 (Out) · RCA (Phono, Cinch)
  • Speakers A · Binding Post
  • Speakers A · RCA (Phono, Cinch)
  • Speakers B · Binding Post
  • Switched 100W · Other
  • Unswitched 200W · Other
Controls
  • Power/Speakers · Rotary Switch · Off, A, Out, B, A+B, Q-VOX
  • AUTO-M · Latching Push Switch
  • Lo Filter · Latching Push Switch · On, Off
  • Hi Filter · Latching Push Switch · On, Off
  • Loudness · Latching Push Switch · On, Off
  • Mono · Latching Push Switch · On, Off
  • Tone Flat · Latching Push Switch · On, Off
  • Bass · Rotary Pot · -4, -3, -2, -1, 0, 1, 2, 3, 4
  • Midrange · Rotary Pot · -4, -3, -2, -1, 0, 1, 2, 3, 4
  • Treble · Rotary Pot · -4, -3, -2, -1, 0, 1, 2, 3, 4
  • Selector · Rocker Switch · AUX, Phono, AM, FM, FM Mute
  • Tape Monitor · Toggle Switch · 1, 2
  • Tuning · Rotary Pot · FM: 87-108 MHz; AM: 530-1700 kHz
  • Volume · Slide Pot
Displays
  • Needle Meter · Tuning
  • Red Light · Tape Monitor In Use · On, Off
  • Red Light · Input Selection · AM, FM, PHONO, AUX
  • Red Light · FM Stereo · On, Off
Links1977 Radio Shack Catalog Pg 6
NotesFrom Radio Shack ad: The new STA-235 is a highly versatile AM/FM Stereo Receiver which delivers enough power to drive almost any speaker system. The "honest" 55 watts per channel over the entire audio bandwidth will drive both "main" and "remote" speakers. And it has the performance and convenience features that distinguish a truly great receiver. Integrated circuits are used for all critical circuit stages - PLL for rock-stable Stereo, plus IF/Detector, Mute/Auto-Magic and Phono preamp. Built-in Quatravox synthesizes 4-channel sound from ordinary stereo sources. Whenever you're ready, just add a second set of stereo speakers for the rear channels. It's the best of both worlds - stereo and 4-channel. With the FM tuner, the specifications tell the story. There's a dual- gate MOS FET in both the FM RF and Mixer stages, resulting in greater immunity to distortion products, excellent sensitivity and reduced noise. When you tune, Muting eliminates interstation hiss. Our exclusive Auto-Magic dramatically simplifies FM tuning. When you touch the tuning knob, it lets you dial stations easily. Then as you release the knob, Auto-Magic fine-tunes the station and locks it in for drift-free listening. For total circuit protection, we've built-in three special circuits - time delay relay, thermal cut-out plus over-drive protection. Glide-Path volume controls for each channel let you see, as well as hear, the system's balance. Front panel jacks let you listen to any high-level source or make tape recordings without troublesome rear panel connections. A wideband AM delivers that medium's maximum fidelity. All three Tone controls are step-type and a special button defeats the Tone controls for flat frequency response. Two completely independent Tape Monitor circuits make it easy to duplicate tapes or make more than one recording at one time. At Radio Shack we also believe a receiver should look as good as it sounds. Like every Realistic component, the STA-235 comes with a beautiful oiled walnut case - and it doesn't cost you a penny extra. Original MSRP: $399.95