• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• Heathkit (Brand), Heath Co.; Benton Harbor (MI)

• Anno
• 1980 ??

• Categoria
• Ricevitore amatoriale (può includere bande broadcast)

• Radiomuseum.org ID
• 158698

• • alternative name: Heath Company

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di transistor
• A semiconduttori.

• Semiconduttori

• Principio generale
• Supereterodina (in generale); ZF/IF 455 kHz; 2 Stadi BF

• Gamme d'onda
• Onde medie (OM), lunghe (OL) e corte (OC).

• Tensioni di funzionamento
• Rete più presa di alimentazione, per lo più con batteria o accumulatore / 230 AC or 11 - 15 DC Volt

• Altoparlante
• AP magnetodinamico (magnete permanente e bobina mobile) / Ø 10 cm = 3.9 inch

• Potenza d'uscita
• 2 W (qualità ignota)

• Materiali
• Plastica (non bachelite o catalina)

• Radiomuseum.org
• Modello: Allwave Receiver SW-7800 - Heathkit Brand, Heath Co.;

• Forma
• Soprammobile compatto/con bordi arrotondati/midget senza pulsantiera/tastiera.<= 35 cm (Sometimes with handle but for mains only).

• Dimensioni (LxAxP)
• 300 x 130 x 280 mm / 11.8 x 5.1 x 11 inch

• Annotazioni

• The Heathkit SW-7800 all-wave receiver is a rare device with the following data:

  • Frequency range 150 kHz to 30 MHz
  • Double superhet 50,455 MHz / 455 kHz
  • Demodulation
    • AM narrow/wide
    • SSB (USB/LSB)
    • CW
  • Frequency setting
    • Analog over > 1 MHz each and digital with synthesizer in 30 steps of 1 MHz (similar to super VFO principle, remotely similar to Wadley loop)
    • VFO range approx. 5.4 - 6.7 MHz
    • Frequency reading: 5-digit LED display, resolution 1 kHz
  • Input filtering by continuously switched sub-octave filters
  • Antenna inputs, rear: "Lo Z" socket (approx. 50 Ohm, SO-239) and "Hi Z" (long wire), as well as extendable and unscrewable stable rod antenna (1.2 m, which is led directly from the receiver board through an opening in the housing cover; rear right)
  • Built-in loudspeaker, can be switched off via 6.3 mm headphone jack (front), rear MUTE jack and 3.5 mm recorder output (front)​
  • ​Specifications
    • ​Selectivity: AM wide: 5.5 kHz min. at 6 dB​AM narrow, SSB, CW: 2.5 kHz min. at 6 dB
    • Sensitivity:​​ SSB/CW less than 0.35 uV for 10 dB (S+N)/N SensitivityAM less than 2.5 uV for 10 dB (S+N)/N
    • Shape factor: (IF form factor) 1.5 at 6/50 dB
    • Image rejection: (image frequency attenuation): 55 dB min

   

  Der Allwellenempfänger Heathkit SW-7800 ist ein seltenes Gerät mit folgenden Daten:

  • Frequenzbereich 150 kHz bis 30 MHz
  • Doppelsuperhet 50,455 MHz / 455 kHz
  • Demodulation
    • AM schmal/breit
    • SSB (USB/LSB)
    • CW
  • Frequenzeinstellung
    • analog über jeweils > 1 MHz und
    • digital mit Synthesizer in 30 Schritten zu 1 MHz (ähnlich Super-VFO-Prinzip, entfernt ähnlich Wadley-Loop)
    • VFO-Bereich ca. 5,4-6,7 MHz
    • Frequenzablesung: 5-stelliges LED-Display, Auflösung 1 kHz
  • Eingangsfilterung durch mitlaufend geschaltete Suboktavfilter
  • Antenneneingänge, rückseitig: "Lo Z" Buchse (ca. 50 Ohm, SO-239) und "Hi Z" (Langdraht)
  • sowie auszieh- und abschraubbare stabile Stabantenne (1,2 m, die direkt von der Empfangsplatine durch eine Öffnung im Gehäusedeckel geführt ist; hinten rechts)
  • Lautsprecher eingebaut, abschaltbar über Kopfhörerbuchse 6,3 mm (Frontseite), rückseitige MUTE-Buchse und 3,5-mm-Recorderausgang (Frontseite)
  • Netz- (230 V AC) und Batteriebetrieb 11-15 V DC, 0,75 A, (nom. 13,8 V), Buchse an der Rückseite
  • Auszug aus den specifications
    • Selectivity: AM breit: 5,5 kHz min. at 6 dB
    • AM schmal, SSB, CW: 2,5 kHz min. at 6 dB Sensitivity
    • SSB/CW Less than 0,35 uV for 10 dB (S+N)/N Sensitivity
    • AM Less than 2,5 uV for 10 dB (S+N)/N Shape factor (ZF-Formfaktor) 1,5 at 6/50 dB Image rejection (Spiegelfrequenzdämpfung): 55 dB min

• Peso netto
• 3.2 kg / 7 lb 0.8 oz (7.048 lb)

• Prezzo nel primo anno
• 700.00 DM

• Autore
• Modello inviato da Michael Arnoldt. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 717 modelli, di cui 700 con immagini e 507 con schemi.
  Elenco delle radio e altri apparecchi della Heathkit (Brand), Heath Co.; Benton Harbor (MI)