601
Item nr.
| Production | The Netherlands, 1963. |
|---|---|
| Bands | MW (200-576m), 4xSW (83.5-200m, 45-88m, 21.5-46m, 11-22m). |
| Semi- conductors | AF115 (mix), OA79 (limiter), 2x 2SA12 (MF), OA79 (det.), 4 LF trans.. |
| Cabinet | Plastic. Size 33x17x8cm. |
| Power | Batt 6xC, 12-20mA. |
| Documents | Advertisement, Ite's photo's. |
Usually, the type number has first the year and then a sequencing digit, but for tropical sets this order is sometimes reversed. This radio dates from 1963 and has "class indication" 7. The logo of Erres is a picture of a little bird, the Erres Piet.
At first sight, the radio appears to have two whip antenna's (like the FM version RP763), but the one next to the volume control is actually the tone control.
Two design details stand out: theuse of a switching potmeter in combination with pushbuttons, and the tone control shaped as an antenna. This model is the export version of another model, the RP763 with FM and Medium and Long Wave. That model has five pushbuttons (for the three bands, tone, and OFF) and two antenna's (for use as FM dipole). So the 763.1 also must have five pushbuttons, and with it's five bands, the OFF function and tone control had to go elsewhere.
The RP763.1 originally comes without a DC connector, but such a connector can be installed. My set has a 3.5mm jack next to the LS connector. Erres also sold a special power supply, the BE901, for which a matching connector is sometimes found in the back panel.
| Obtained | 3/2025
from  Maarten van Dijk; sn=03695. |
|---|---|
| Condition | 8. |
| Value (est.) | 15€. |
| Sound sample | PLAY SOUND I'm so glad I didn't forget you. |
The sound was like some capacitor might be dried out. What I usually do then, is take a capacitor (of, say, 100 to 300 uF) and just hold it parallel to the caps on the PCB, one by one. The sound got better touching a small 3.2uF elco in the MF section, and replacing that one brought the radio back to life. Just the sound level seems a bit low to me.
In radio's working of 9V batteries, I often build in a connector for a 9V block battery. I did this during the repair, but a complete set of six C-cells is bought for just 5 euro's, so I inserted the original type, which might last until the end of the radio's life. The picture on the left shows the extra DC jack above the LS connector.