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T-2800-B T58

T-2800-B T58; Tesla; Praha, (ID = 93656) Radio
T-2800-B T58; Tesla; Praha, (ID = 93657) Radio
T-2800-B T58; Tesla; Praha, (ID = 665927) Radio T-2800-B T58; Tesla; Praha, (ID = 665926) Radio
T-2800-B T58; Tesla; Praha, (ID = 665925) Radio T-2800-B T58; Tesla; Praha, (ID = 665924) Radio
T-2800-B T58; Tesla; Praha, (ID = 284203) Radio T-2800-B T58; Tesla; Praha, (ID = 96388) Radio
T-2800-B T58; Tesla; Praha, (ID = 1176352) Radio T-2800-B T58; Tesla; Praha, (ID = 1434635) Radio
T-2800-B T58; Tesla; Praha, (ID = 1434637) Radio T-2800-B T58; Tesla; Praha, (ID = 1434638) Radio
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T-2800-B T58; Tesla; Praha, (ID = 665927) Radio
Tesla; Praha,: T-2800-B T58 [Radio] ID = 665927 707x579
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For model T-2800-B T58, Tesla; Praha, Bratislava etc.
Country:  Czechoslovakia
Manufacturer / Brand:  Tesla; Praha, Bratislava etc.
Year: 1958–1960 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 9:
Main principle Superheterodyne (common); ZF/IF 250 kHz
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Dry Batteries / 4 × 1,5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9.5 cm = 3.7 inch
Power out 0.1 W (unknown quality)
from Model: T-2800-B T58 - Tesla; Praha, Bratislava etc.
Material Leather / canvas / plastic - over other material
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 220 x 150 x 85 mm / 8.7 x 5.9 x 3.3 inch
Notes Moulded paper case, covered with artificial leather. Different colours. First Czechoslovak transistor radio. Transistors: 2 x 154NU70, 3 x 153NU70, 104NU70, 3 x 103NU70. From number 427.000 the schematic is slightly changed to 152NU70, 154NU70 instead of 2 x 154NU70.
Net weight (2.2 lb = 1 kg) 1.2 kg / 2 lb 10.3 oz (2.643 lb)
Price in first year of sale 1'303.00 Kc
Source of data Ceskoslovenske Rozhlasove a Televizni Prijimace I a II
Mentioned in Photo n.13 in Antique Radio Magazine n.57, October 2003, pages 53-61. Written in Italian and English

Model page created by Eduard Pavlik. See "Data change" for further contributors.

All listed radios etc. from Tesla; Praha, Bratislava etc.
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Forum contributions about this model
Tesla; Praha,: T-2800-B T58
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tesla: 2800B; T58
Klaus-Hartwig Müller

 "TESLA 2800B-T58" -Erstes volltransistorisiertes Radio des ehem."Ostblocks" !Nach Angabe vonM.P.Strassmann handelt es sich beim Modell 2800B-T58 um das erste im damaligen Ostblock freiverkäuflich produzierte volltransistorisierte Radio überhaupt.Die ungewöhnliche  ZF von 250 kHz mußte wegen der Grenzfrequenz der eingesetzten Transistoren so niedrig liegen.

Quelle für diesen Beitrag:Michael Philipp Strassman;"TESLA -Die Geschichte eines Staatskonzerns und seiner Geräte der Unterhaltungselektronik"Funk Verlag Bernhard Hein e.K. Dessau 2007 ISBN 978-3-936124-21-3

Tesla; Praha,: T-2800-B T58
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