Manufactured by Sony, Tokyo.
Around 1989/90 Sony introduced the successor to the ICF-7600D, the double conversion receiver with nearly identical dimensions has also similar technical specifications.
As a successor to the ICF-7600DS, Sony introduced the ICF-SW7600 at the end of 1989: a new representative from the group of receivers, with the number combination 7600 in the designation, which did not reduce the confusion about the different sets of the 7600 family.
The telescopic antenna is mounted on the top of the unit and for the first time, the receiver was equipped with a flap on the back, so it could be brought into an inclined position for operation.
The left half of the front panel is taken up by the speaker grill, on the right is the frequency display and the power switch, below the numeric keys for memory recall or direct frequency entry and the AM / FM / EXECUTE keys.
The frequency is displayed with an accuracy of 5 kHz. For frequencies within the limits of a shortwave broadcast band, the corresponding meter band is also displayed. A small red LED next to the display serves as a field strength indicator and lights up in case of strong signals.
Pressing the ON button switches the set on; in the LOCK position, the slide switch is blocked against accidental switching on in luggage.
To enter a frequency, first select the band range with the AM (long/medium/short wave resp. 153 - 29'995 kHz) or FM (VHF) key. The reception frequency can be entered directly with the number keys and called up with EXECUTE. The key sequence AM - 6 - 1 - 5 - 5 - EXECUTE, for example, calls up the Austrian Radio with its morning broadcast from Vienna.
To store an active frequency, press the ENTER key and one of the numeric keys at the same time; to recall the stored station, just press the corresponding key.
A +/- switch MANUAL TUNING is used to tune the receiver up and down in 5 kHz steps. If you also press the small BAND button together with it, you immediately jump to the lower limit of the next shortwave broadcast band. Pressing the start-stop button starts a scanning function.
Other important controls, which must also be operated with pointed fingers, are located on the side faces of the set: On the right, the volume slider control, a tone control switch and the operation mode switch are located. In normal position, this small switch tunes the receiver in a fixed 5 kHz channel spacing. In fine tuning mode, the frequency can be adjusted continuously between the 5 kHz points without changing the frequency displayed on the screen. In this way, if there is interference on an adjacent channel, use the FINE position to move down one or two kHz and thus make the signal more intelligible, but the reception frequency only matches the displayed frequency in the middle position of the knurled wheel between the dark and light half.
In the SSB position, the BFO is activated, and the small fine-tuning knob must now be used to zero beat. So reception of amateur radio and single sideband stations is possible. On the left-hand face of the unit, you will find the power supply connection (pay attention to the typical Sony plug dimensions and polarity!), an earphone and a tape recorder line out jack.
The small Sony receiver is powered by a total of four UM-3 or AA batteries. The reception performance of the Sony 7600D was outstanding for a small receiver at the time of its release; even today, the set is an above average performer when travelling. The built-in IF filter is sufficient to separate transmitters in the 5 kHz channel spacing, especially when fine tuning is used to tune 1 - 2 kHz lower or higher.
Double conversion with digital PLL synthesis.
The set is equipped with semiconductors.