- Country
- United States of America (USA)
- Manufacturer / Brand
- Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX
- Year
- 1958–1962
- Category
- Amateur-Receiver (amateur bands, may include broadcast bands)
- Radiomuseum.org ID
- 79166
Hallicrafters S-107 receiver
Q= prospectus
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 8
- Main principle
- Superheterodyne (common); ZF/IF 455 kHz
- Wave bands
- Broadcast plus more than 2 Short Wave bands.
- Power type and voltage
- Alternating Current supply (AC) / 105-125 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
- Power out
- 1 W (unknown quality)
- Material
- Metal case
- from Radiomuseum.org
- Model: S-107 - Hallicrafters, The; Chicago,
- Shape
- Tablemodel, low profile (big size).
- Dimensions (WHD)
- 340 x 225 x 178 mm / 13.4 x 8.9 x 7 inch
- Notes
-
Coverage: 0.54-1.63, 2.5-6.3, 6.3-16, 14-31, 48-54.5MHz, the S-107 replaces the S-53A
The original price of $60 is from the Radio by Hallicrafters book (1996, page 69). This price most likely is a typo since it appears low for a model of this type. The 1959 Sears ad lists this radio for $89.95 and that price appears to be more reasonable.
- Net weight (2.2 lb = 1 kg)
- 7.2 kg / 15 lb 13.7 oz (15.859 lb)
- Price in first year of sale
- 60.00 $
- Source of data
- Communications Receivers
- Mentioned in
- Radios by hallicrafters
- Literature/Schematics (1)
- Shortwave Receivers - Past & Present (3rd ed.)
- Literature/Schematics (3)
- Sears, Roebuck Catalogs (Silvertone) (Fall/Winter 1960, page 1312. Fall/Winter 1961, page 1231.)
- Literature/Schematics (4)
- Sears, Roebuck Catalogs (Silvertone) (Spring/Summer 1959, page 878. (Order=57Y 07452))
- Author
- Model page created by a member from D. See "Data change" for further contributors.
- Other Models
-
Here you find 922 models, 472 with images and 520 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX
Collections
The model is part of the collections of the following members.
Forum contributions about this model: Hallicrafters, The;: S-107
Threads: 2 | Posts: 5
Our member Sinisa Trlin has the following problem:
Why is the Twin Diode 6AL5 filament heating reduced by a 6.8 ohm series resistor?
Specified for 6.3 V / 0.3 amp it is connected via said resistor to the common 6.3 V filament supply.
Such is found in many (all?) post-war models, e.g. S-40, S-53, S-76, 8R40, SX-90,
SX-130, etc.
Pre-war models S-19R and SX-24 are not equipped wich such a series resistor.
Even VTVMs are using the heater reduction.
Same is found for other Twin Diodes like 6H6 or EAA91.
What is the technical reason to reduce emission in such tubes?
To reduce the residual current at the characteristic bend?
Konrad Birkner † 12.08.2014, 17.Mar.13
Unser Mitglied Sinisa Trlin bat mich folgendes zu fragen:
Warum wird die 6AL5 absichtlich unterheizt?
Sie hat einen 6,8 Ohm Vorwiderstand, obwohl sie mit 6.3 V 0,3 A spezifiziert ist und die Heizspannung für das gesamte Gerät ebenfalls 6,3 V beträgt?
Das findet sich bei vielen (evtl.allen?) Nachkriegsmodellen, z.B. S-40, S-53, S-76, 8R40,
SX-90, SX-130 etc.
Die Vorkriegsmodelle S-19R und SX-24 verwenden keinen Vorwiderstand.
Auch bei Röhrenvoltmetern findet sich Unterheizung der Duodiode (z.B. auch 6H6 oder EAA91 u.a.).
Was ist der genaue Grund Signal-Messgleichrichterdioden zu unterheizen?
Anlaufstrom / Kennlinienknick?
Konrad Birkner † 12.08.2014, 17.Mar.13