Sony Corporation, Tokyo
CFS-950S Weltempfänger mit Kassettenrecorder
überarbeitet am 26.9.2010
The Sony CF-950S is a quite bulky woorld band radio with an integrated cassette recorder; the receiving circutry is technically based on the Sony ICF-5900 W, a double conversion receiver with crystal calibrator. The CF-950S has an integrated cassette recorder with the capability to include voice remarks during a recording.
The large format portable has protective handles on both sides of the front panel, it's dimensions are 43 x 30 x 15 cm
and the weight 5,6 kg. The controls are scattered over the frontpanel in a slightly chaotic way. The telescopic antenna is located in vertical position at the right small face of the radio.
In the upper part of the front panel, You find the speaker grill at the left, at the right the signal strength meter, the big switch for the crystal calibrator just below and the dial window with the horizontally moved film frequency dials for shortwaves, mediumwaves and the VHF broadcast band at the right. A tiny optic indicator will indicate the active band, the bandswitch pushbuttons are located just below. The dial marks are quite coarse in the VHF and MW bands, the calibration marks are quite easy to tune in the lower frequency shortwave bands, on the higher frequency, they are quite near so tuning is a challenge.
Just below the band switches, You find the next to the tiny microphone the main tuning knob for coarse tuning, in the shortwave ranges, the set can be tuned directly or it is tuned to the next 250 kHz calibrator signal for signal maximum and the fine tuning knob with it's dial marks for +/- 125 kHz is used to tune in a station on a known frequency with a high accuracy of better then 5 kHz.
The mono cassette recorder is located on the left on the front panel. The pushbuttons for PLAY, fast forward and rewind, etc. are located below the cassette compartment. The headphones jack is found in the left lower corner. The switch CREDIT IN is used to add a spoken comment to a recording from the radio. The cassette recorder comes with a mechanical band counter which helps You to find a tape position later, when You have written down the setting at the beginning of a recording.
As the circuitry of the receiver is based in that of Sony's ICF-5900 W, the shortwave performance is more or less the same. The markings of the crystal calibrator in the high frequency bands are even more narrow and the upper limit of the shortwave coverage is 22 MHz. Operating the receiver with the use of the crystal calibrator and the fine tuning dial is quite complicated, this might me the reason why most CF950S might never have been used as serious shortwave receivers according to Sony's intention but more as kitchen or workshop radios with cassette player and shortwave capabilities.
As later Sony radios (after the appearence of the ICF-2100) had a nearly foolproof operation scheme, the CF-950S is more a collector's radio then a versatile travel companion nowadays. It is one of the few examples of a shortwave receiver with an integrated cassette recorder, other sets are the tiny Sony SW-1000 and Sangean's ATS-818CS.
© Martin Bösch 26.9.2010