• Country
• Finland

• Manufacturer / Brand
• Unknown - CUSTOM BUILT; Finland

• Year
• 1960 ??

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 283490

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 3

• Valves / Tubes
• ECC85 EF80 ECC85

• Number of Transistors

• Semiconductors
• OA72 OA72

• Main principle
• Superheterodyne (common)

• Wave bands
• FM Broadcast Band Only

• Power type and voltage
• Powered by external power supply or a main unit. / AC 6.3 & DC 200 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: EVO Niemelä FM-AM Converter Ula310Ya6 - Unknown - CUSTOM BUILT;

• Shape
• Chassis only or for «building in»

• Notes

• Converter from FM to AM, to be installed in distributed antenna systems.

  Receives one FM channel, and drives a small power am- transmitter. FM is received with a 240 ohm antenna, AM signal is fed into a distributed antenna system. This was a simple method to allow AM-only radio owners to listen a better quality program (AM signal quality was poor specially in the northern Finland).

  FM front end (ECC85), IF amplifier (EF80) and detector (OA72). AM modulation level control, oscillator and modulator tube. Power supply from antenna amplifier (teleste or other brand)

  Manufactured by E.V.O.Niemelä technical office, Rovaniemi.

• Author
• Model page created by Matti Adolfsen. See "Data change" for further contributors.

• Other Models

• Here you find 8 models, 8 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT; Finland