| Country: Netherlands | Manufacturer/Brand: Erres, Van der Heem NV; Den Haag |
| Year: 1952 | Type: Converter SW/FM/VHF/UHF (Adapter, Frequency Mod.) |
| Valves / Tubes | 5: EF80 ECC81 EF80 EF80 EB91 |
|---|
| Principle | Superhet with RF-stage; IF-Freq. 17000 kHz |
|---|---|
| Tuned circuits | 9 FM-circuit(s) |
| Wave bands | FM Radio only |
| Power type and voltage | Alternating Current supply (AC) / 220 Volt |
| Loudspeaker/pwr.out | - For headphones or amp. |
| from Radiomuseum.org | Model: FM521 |
| Material | Metal case |
| Shape | Chassis only or for «building in» |
| Dimensions (WHD) | 330 x 120 x 60 mm / 13 x 4.7 x 2.4 inch |
| Notes | FM unit for building into Erres receivers KY525, KY5265 and KY529 |
This model was suggested by John Hupse.
All listed radios etc. from Erres, Van der Heem NV; Den Haag
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