Antique radios, Old Time Radios

History of the manufacturer

Iskolai Taneszközök Gyára (Calderoni,ITG; Budapest

ID = 9486

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Name:	Iskolai Taneszközök Gyára (Calderoni,ITG; Budapest (H)
Abbreviation:	iskolai
Products:	Model types Others
Summary:	Name: Calderoni(vor 1947), ITG (~1947), Tanért(~1968), Calderoni(~1989).Produkts:V,A-meter ect.
Founded:	1819
Production:	1920 -
History:

This manufacturer was suggested by Sándor Selyem-Tóth.

Some models:

Country	Year	Name	1st Tube	Notes
H	68	V/A meter		DC 5 and 25 V; 0,5 and 2,5 A; Precizion: 1,5 %; Found meter: 10 mA, 60 mV.
H	68	V/A meter [Tanert]		DC 0,5, 5, 50, 500 V; 5 mA, 50 mA, 0,5 A, 5A. 1000 Ω/V.
H	72	V-A Meter H13		DC: 5 and 25 V, 0,5 and 2,5 A; Precizion: 1,5 % Deprez; Found meter: 10 mA, 60 mV.
H	53–60	Demonstrációs Rádiópad
H	72–74	Voltax-2, V/A meter H-18		DC 3 mA /60 mV; U: 30 and 6 V, I: 0,6 and 3 A.
H	68–73	V-A Meter H-12		1000 Ohm/V. DC V: 500-250-50-5 V, A: 5-50 mA, 0,5-5 A.
H	60	Univerzális Tápegység / Universal Power Supply ITG/1960	AZ21	Iskolai demonstrációs célokra készült tápegység. Terhelhetősége: AC 2-8 V esetén 10 A;...
H	58	Labor Voltmeter 35-58		~6 V / 3 A, Basic instrument: 15 mA.
H	80	Power Supply, Tápegység 3. L 5024-3		DC: 0-250 V, 100 mA; 0-42 V 80 mA. AC: 42 V / 80 mA; 6,3 V / 3 A; 0-6,3 V / 100 mA.
H	54	School Demonstration Detektor Radio		Galena (Pb-II-sulfid) detektor (cat whisker).
H	79	Power Supply, Tápegység 2. J14 / L 5024-2		DC: 0-250 V, 100 mA; -10 +10 V/ 80 mA. AC: 110 V/ 1 A; 220 V/ 1 A; 24 V/ 2 A, 6,3 V / 5 A.
H	54	Resistance Box L 5046		1; 2; 2, 5; 10; 20; 20; 50; 100; 200; 200; 500; 500; OHM 5; 5; 2; 2; 1; kOhm. Price in 19...