DeLuxe RF Preselector II MFJ-1040B

MFJ Enterprises; Starkville (MS)

  • Anno
  • 1981 ?
  • Categoria
  • Altro apparecchio amatoriale (ma non tasto Morse) 
  • Radiomuseum.org ID
  • 335102

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Numero di transistor
  • 5
  • Gamme d'onda
  • Onde medie (OM) e più di 2 gamme di onde corte (> 2 x OC).
  • Tensioni di funzionamento
  • Fornita mediante altra unità o unità principale. / 9-18 Volt
  • Altoparlante
  • - - Nessuna uscita audio.
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: DeLuxe RF Preselector II MFJ-1040B - MFJ Enterprises; Starkville MS
  • Forma
  • Apparecchio portatile > 20 cm (senza la necessità di una rete)
  • Dimensioni (LxAxP)
  • 8.25 x 7 x 2.25 inch / 210 x 178 x 57 mm
  • Annotazioni
  • The MFJ-1040B RF preselector boosts signals from 1.8 to 54 MHz. It utilizes a dual gate MOSFET, and bipolar transistors for low noise and high gain. Gain is up to 20dB.
    Push-button switches are provided for two receivers, two antennas, 20 dB
    attenuator and ON/BYPASS. The band switch selects: 1.8-3, 3-6, 6-15 and 15-54 MHz. Controls are provided for Delay, Gain, Band and Tune.

    Unlike most preselectors which are for receive-only, the MFJ-1040B may be used with a transceiver. Its relay will automatically bypass the RF amplifier when transmitting a signal up to 350 watts PEP input. A push-to-talk connection is also provided as an option.

    Ads note the unit's ability as, "Lets you copy weak, barely readable signals. Rejects out-of band signal images. Strong signal ability reduces cross mod over loading. Excellent signal to noise ratio."  For very strong signals, the 20 dB attenuator switch would be used.

    Rear panel jacks are provided for the use of either RCA phono plugs or PL-259
    connectors for antenna and receiver/ transceiver.  Initially priced at $99.95. Requires a 12 VDC 300ma AC Adapter such an the optional MFJ-1312 power cube sold separately for $7.95. 

    The near-identical earlier model MFJ-1040 was reviewed in Amateur Radio in February 1981.

     

     

  • Prezzo nel primo anno
  • 99.95 USD
  • Bibliografia
  • Radio Amateur, February 1981 (MFJ-1040)
  • Letteratura / Schemi (1)
  • MFJ-1040B manual
  • Autore
  • Modello inviato da Rich Post. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello DeLuxe RF Preselector II fa parte delle collezioni dei seguenti membri.

 Forum