S-72

Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX

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Country
United States of America (USA)

Manufacturer / Brand
Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX

Year
1949–1953

Category
Amateur-Receiver (amateur bands, may include broadcast bands)

Radiomuseum.org ID
43904

Picture
Schematics

S-72; Hallicrafters, The; (ID = 265880) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265881) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265883) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265884) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265885) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265886) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265887) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 265888) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549578) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549579) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549580) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549581) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549582) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549583) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 1549584) Amateur-R — Hallicrafters, The; S-72 (3)

S-72; Hallicrafters, The; (ID = 928624) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 928627) Amateur-R — Hallicrafters, The; S-72 (1)
Deckel geöffnet

S-72; Hallicrafters, The; (ID = 59516) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 210675) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 928625) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 928626) Amateur-R — Hallicrafters, The; S-72 (1)
Koffergeraet mit aufgekl. Deckel

S-72; Hallicrafters, The; (ID = 928629) Amateur-R — Hallicrafters, The; S-72 (1)
Typenschild

S-72; Hallicrafters, The; (ID = 1326284) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 1331275) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 1549586) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 1622245) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 1994487) Amateur-R — Hallicrafters, The; S-72 (1)
Just cleaned. S72R

S-72; Hallicrafters, The; (ID = 1994491) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 1994499) Amateur-R — Hallicrafters, The; S-72 (1)
Before doing anything. Absolutely original.

S-72; Hallicrafters, The; (ID = 1994500) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 1994501) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 1994505) Amateur-R — Hallicrafters, The; S-72 (2)
From contemporary advert.

S-72; Hallicrafters, The; (ID = 1994512) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 2058633) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 2058635) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 2058638) Amateur-R — Hallicrafters, The; S-72 (2)

S-72; Hallicrafters, The; (ID = 2092916) Amateur-R — Hallicrafters, The; S-72 (2)
Hallicrafters Print Ad

S-72; Hallicrafters, The; (ID = 2656519) Amateur-R — Hallicrafters, The; S-72 (1)
Hallicrafters S-72 portable receiver

S-72; Hallicrafters, The; (ID = 2656520) Amateur-R — Hallicrafters, The; S-72 (1)
Hallicrafters S-72 portable receiver-open

S-72; Hallicrafters, The; (ID = 2656521) Amateur-R — Hallicrafters, The; S-72 (1)

S-72; Hallicrafters, The; (ID = 2656522) Amateur-R — Hallicrafters, The; S-72 (2)

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

Technical Specifications

Number of Tubes
8

Valves / Tubes
1T4 1U4 1R5 1U4 1U4 1U5 1U5 3V4

Main principle
Superhet with RF-stage; ZF/IF 455 kHz

Tuned circuits
9 AM circuit(s)

Wave bands
Broadcast plus more than 2 Short Wave bands.

Power type and voltage
Line / Batteries (any type) / 105-125 Volt

Loudspeaker
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

Material
Leather / canvas / plastic - over other material

from Radiomuseum.org
Model: S-72 - Hallicrafters, The; Chicago,

Shape
Portable set > 8 inch (also usable without mains)

Dimensions (WHD)
14 x 12.2 x 7.25 inch / 356 x 310 x 184 mm

Notes
AC/DC battery portable. Luggage-type cabinet in brown leatherette. Weight 16lbs., less battery pack. The price in the Sears Catalog is $ 109.95. See also the Hallicrafters model S-72L.

Sears order number : 57E 07457

Net weight (2.2 lb = 1 kg)
7.2 kg / 15 lb 13.7 oz (15.859 lb)

Price in first year of sale
109.95 $

External source of data
Ernst Erb

Source of data
The Radio Collector's Directory and Price Guide 1921 - 1965

Circuit diagram reference
Rider's Perpetual, Volume 20 covering 1950

Mentioned in
Communications Receivers

Literature/Schematics (2)
Montgomery Ward Catalogs (Wards, Airline) (Spring/Summer 1952, page 605.)

Literature/Schematics (3)
Sears, Roebuck Catalogs (Silvertone) (Spring & Summer 1951, page 648. Fall & Winter 1952/53, page 857.)

Literature/Schematics (4)
Sears, Roebuck Catalogs (Silvertone) (Fall/Winter 1950, page 744.)

Other Models
Here you find 926 models, 476 with images and 526 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 | Museums | Literature

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The model is part of the collections of the following members.

Forum

Forum contributions about this model: Hallicrafters, The;: S-72

Threads: 1 | Posts: 2

The original version had an ANL on/off switch above the earphone socket (Automatic Noise Limiter). The wood under the brass grill still has the hole on later S72R models. The S72R appears to have been sold till 1959.

The S72R seems to have several revisions and early versions seem the same as S72. Later versions have a second electrolytic multicap mounted in the hole beside the main one. This fouls any earphone headset on rear panel, unless it's narrow or soft head strap.

A variety of large 7.5V/90V (and 7.5V/9V) battery packs are compatible. It has two paralleled series filament chains, so a filament failure when on AC mains can cause a second failure.

The mains plug is docked on chassis to switch over to battery power. A box with 60 x AA cells and 5 Alkaline D cells is quite economic to power it and can be in a replica case.

The mixer and oscillator are two separate tubes, allowing reliable operation to 30MHz at end of LT. The BFO on/off (for CW, or possibly SSB) is also RF gain when the BFO is on. There are two 1U4 for the IF amp. A second IU5 is the BFO.

Performance may be better than the Zentith Transoceanic and the RCA and Hallicrafter versions of it, but at expense of half the battery life! The electrical band spread allows easy tuning even though it's continious coverage from about 540KHz to 30MHz in only four bands that slightly overlap..

Michael Watterson, 09.May.16

Weitere Posts (2) zu diesem Thema.

S-72

Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX

Collections

Forum contributions about this model: Hallicrafters, The;: S-72

hallicraft: S72R