My Telefunken Collection

TT 350

Device Type

Analog Tuner

Start of Sale

1979

General Description

The TT 350 was Telefunken's 1979 offer if all you wanted was a simple tuner that did it's job, in sharp contrast to the synthesizer-based TT 750. The 'main board' is the same one as in the TR 350 or the STT 1 / CM 20, and apart from this board, there is not much else in the standard case that was used for almost all components of that series. As a result, the case is almost empty and everything would easily fit into a fraction of this space...

Features

Variable Muting Level, Automatic Fine Tuning, Exact Tuning Indicator

Connectors

Technical Data

(taken from the user's manual)

Wave Ranges:	FM = 87.5 ... 108 MHz
	MW = 518 ... 1610 kHz
	LW = 148 ... 325 kHz
Circuits:	AM 5 / FM 9
Intermediate Frequency:	AM 460 kHz / FM 10.7 MHz
IF Bandwidth:	AM 4.5 kHz / FM 170 kHz
Sensitivity:	FM 1.4 µV Mono / 4.5 µV Stereo
	(S/N = 26 dB, 199 Hz, 40 kHz Modulation, 240 Ohm
Distortion Factor FM:	< 0.5 % Mono / < 0.6% Stereo
	(1 kHz, 40 kHz Modulation)
Extraneous Voltage Ratio FM:	> 62 dB Mono / > 59 dB Stereo
	(acc. to DIN 45 500, Sht 2)
Signal / Noise Ratio FM:	> 61 dB Mono / > 55 dB Stereo
	(acc. to DIN 45 500, Sht 2)
Pilot Tone Suppression:	> 53 dB (acc. to DIN 45 500,
	Sht. 2/8, AF and TB)
Channel Separation:	> 38 dB / 1 kHz
Tuning Aids:	Field strength indicating element
	for AM/FM with LEDs, stereo indicator,
	exact tuning indicator
Semiconductors:	6 Integrated Circuits
	13 Transistors
	12 LEDs
	7 Diodes
	1 Mains Rectifier
Mains Voltage:	220/110 Volts at 50/60 Hz
Fuses:	Mains 220 V 1 x T 80 mA
	110 V 2 x T 80 mA
	Secondary T 315 mA
Dimensions:	460 x 145 x 350 mm

Common Failures

none known

Spare Part Numbers

(taken from the service manual)

		Housing Parts
501	309 796 045	cabinet, brown
502	309 796 046	cabinet, black
503	309 770 920	cabinet foot
504	309 710 214	flood light dial for brown
505	309 710 215	flood light dial for silver
506	309 833 546	dial cover
507	309 833 545	front cover for brown
508	309 833 547	front cover for silver
509	309 831 713	light box for brown
510	309 831 714	light box for silver
511	309 809 952	toggle switch knob for brown
512	309 809 951	toggle switch knob for silver
513	309 802 114	tuning knob
514	309 802 115	control knob for range and input selector
515	309 833 535	knob cover
		Electrical Parts
Position	Order No.	Designation
BS 5108	349 362 015	FM-AM-AF amplifier board
BS 5508	309 653 943	fuse board
BS 5517	309 310 142	mains transformer with fuse board
BS 5606	349 350 925	FM mixing unit with AM tuning capacitor
BS 5729	349 395 021	LED indicator for field strength
FU 1	309 627 917	fuse T 80 mA
D 103/107	309 327 022	LED FLV 110 red
LA 1	309 621 961	dial bulb 6-7 V / 300 mA
R 1	309 500 072	film variable resistor 10 kOhm
S 1	309 630 994	mains switch
S 3/4	309 639 009	toggle switch 1 x UM
520	309 601 701	FM antenna
521	309 603 807	AM antenna
522	309 695 935	power cord
		AM-FM Switch Board
Position	Order No.	Designation
BS 5108	349 362 015	FM-AM-AF amplifier board with rotary switch
BU 101/S 101	309 670 923	AM antenna socket
BU 102	309 670 927	antenna socket, combined
BU 103	309 672 801	DIN socket, 5 pins
BU 104/105	309 679 503	cinch socket
C 113	309 450 605	disc trimmer A N 750 10 40/250V
C 121	339 582 048	al-electr. capacitor 10 µF/10 V
C 127	309 410 641	al-electr. capacitor 4.7 µF/25 V
C 136/165/184	309 413 482	al-electr. capacitor 100 µF/25 V
C 138/146	309 411 673	al-electr. capacitor 22 µF/10 V
C 141/161	309 410 634	al-electr. capacitor 4.7 µF/35 V
C 152/162	309 410 655	al-electr. capacitor 2.2 µF/25 V
C 153	309 412 645	al-electr. capacitor 47 µF/25 V
C 177	309 414 737	al-electr. capacitor 2200 µF/40 V
C 182/183	309 410 688	al-electr. capacitor 1 µF/25 V
D 104/105/106	309 325 027	diode 1 N 4148
Fi 101	309 103 951	ceramic filter 1.10 MHz/0.03 MHz
Fi 102	309 111 802	band filter
Fi 103	309 103 953	ceramic resonator 460 kHz
Fi 104	309 220 031	IF filter coil 2
Fi 105/106	309 103 948	ceramic filter 19 kHz/38 kHz
FU 101	309 627 901	fuse T 315 mA
GR 101	309 320 602	rectifier B 30 C 350/250 KP
IC 101	309 368 133	IC TDA 1046
IC 102	309 368 094	IC CA 3089 E
IC 103	309 368 173	IC TCA 4500 A
IC 104	309 368 130	IC UA 78 GU 1 C
L 101	309 259 919	choke
L 102	309 309 950	antenna transformer
L 103	309 250 930	RF choke 2200 µH
L 104	309 207 922	pre-circuit coil MW
L 105	309 208 911	pre-circuit coil LW
L 106	309 259 934	RF choke
L 107/108	309 218 922	oscillator coil LW
L 111	309 220 083	filter coil 18 MHz
L 112	309 220 046	filter coil 10.7 MHz
R 157	309 500 071	variable resistor 5 K 1 0.15 W
R 166	309 509 401	variable resistor 10 K 1 0.07 W
S 104	309 639 003	rotary switch
T 101	309 001 238	transistor BF 441
T 102/103/107/	309 001 226	transistor BC 558 B
109
T 104	309 001 227	transistor BF 256 B
T 105/106	309 556 087	transistor BC 548 B
T 108/111/112	309 556 224	transistor BC 548 C
		FM Mixing Unit
Position	Order No.	Designation
BS 5606	349 350 925	FM mixing unit with AM tuning capacitor
C 105/116/122	309 400 967	tuning capacitor
C 625	309 461 703	TA-electr. capacitor 22 µF/6.3 V
D 601	309 327 956	diode SMV 709
D 602	309 325 027	diode 1 N 4148
Fi 601	309 220 084	FM IF coil
L 601	309 209 930	FM antenna coil
L 602	309 209 931	pre-circuit coil
L 603	309 219 935	oscillator coil
L 604/606	309 249 171	IF circuit coil 2
L 605	309 250 943	RF choke
T 601	309 005 007	transistor 2 SK 55 D
T 602/603	309 001 933	transistor BF 241
		LED Indicator
Position	Order No.	Designation
BS 5729	349 395 021	LED indicator for field strength, 10-fold
530	309 900 292	diode holder, 12-fold
531	309 651 977	sockets bar, 4 pins
D 701-710	309 327 053	LED CQY 85 red
IC 701	309 368 231	IC U 254 B
IC 702	309 368 230	IC U 244 B
		Mechanical Parts
Position	Order No.	Designation
535	309 863 988	frame chassis
536	309 926 713	cord roller
537	309 926 983	cord disc
538	309 926 808	tension roller
539	309 981 802	spring for tension roller
540	309 943 018	drive shaft
541	309 927 911	flywheel
542	309 870 925	dial cord
543	309 823 015	pointer
544	309 928 904	clutch
545	309 921 916	switch rod
546	309 653 501	switch rod

Available Documents

• User's Manual
• Service Manual

Back to List