123
Item nr.
RF generator, used for aligning and testing radios.
| Production | The Netherlands, 1950. |
|---|---|
| Bands | A 100-250 kHz, B 250-600 kHz, C 600-1500 kHz, D 1.5-4 MHz, E 4-10 MHz, F 10-25 MHz. |
| Tubes | ECH21 (HF osc.), ECH21 (LF osc. and modulator), EZ2 (rectifier). |
| Cabinet | Steel. Size 25x17x16 cm. |
| Power | AC. |
| Documents | Service documentation, schema, component layout. |
To see the component layout, you have to unscrew a lot of bolts because Philips did not economize on the number of screws to close its professional equipment. In the left part you see the two ECH21 amidst the six band coils; the closed box there houses the tuning capacitor. The right part has the power transformer and the rectifier.
| Obtained | 3/1999 from NVHR Swap Meet. |
|---|---|
| Condition | 8. |
| Disposed | Sold 3/2015. |
The coil for band A is interrupted, so that band doesn't operate. Later the whole set didn't work because of a short in the wiring in an extremely difficult to reach place. I repaired it by changing some of the wiring layout. To allow a more flexible modulation than just the 400Hz tone, I made the connection to the modulation grid external.
