• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1989 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 186671

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 1

• Semiconductors
• CX20111 LA3335 CXA1522

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast (BC) and FM or UHF.

• Power type and voltage
• Dry Batteries / 2 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 cm = 1.4 inch

• Power out
• 0.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: SRF-S25 - Sony Corporation; Tokyo

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 60 x 95 x 20 mm / 2.4 x 3.7 x 0.8 inch

• Notes

• Pocket radio, MW/FM analog tuner, FM Stereo on headphones, LED tuning, headphones jack. This SRF-S15 model shares most of the components with its sibling SRF-S15, where the S15 do not include the internal speaker. Both are described in the Sony SRF-S15/S25 Service Manual.  Please see the SRF-S15 variant here: https://www.radiomuseum.org/r/sony_srf_s_15.html Both variants uses the same IC set: IC1 CX20111 FM/AM Front-End, IF Det, AFC, AGC; IC2 LA3335M MPX Stereo decoder; IC3 CXA1522M Stereo Earphone Amp (also drives the speaker on the S25).

• Net weight (2.2 lb = 1 kg)
• 0.1 kg / 0 lb 3.5 oz (0.22 lb)

• Author
• Model page created by Julián Muñoz Lorenzo. See "Data change" for further contributors.

• Other Models

• Here you find 3991 models, 3852 with images and 956 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo