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History of the manufacturer  

RR Zavodi (Radio Röntgen), Заводи РР Ниш; Niš - see also Ei

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Name: RR Zavodi (Radio Röntgen), Заводи РР Ниш; Niš - see also Ei    (YU)  
Brand:
RR Niš
Abbreviation: rr-zavodi
Products: Model types Tube manufacturer
Summary:

Заводи Радио Рендген Ниш - Zavodi Radio Rendgen - Institute Radio Röntgen Niš
Niš (1948)

Zavodi RR Niš
Niš (1950)

The company name is used in different combinations, e.g. Zavodi-Nis (as on logos), RR Zavodi Nis, Zavodi RR Nis, etc.

In 1962 they became part of the Ei Elektronska Industrija holding, which continues use of the RR brand for a time.

Models that show RR on the front are listed here.

Founded: 1948
Closed: 1962
History:

The company began 1948 with the help of German experts, manufacturing tubes, X-Ray machines, and radios.

The tube production in 1951 consisted only of type AZ1, in 1956 the types EZ21, ECH21, EBL21, EL21, UCH21, 6K7GT and 1N5GT were manufactured.

In 1962 they merged with Belind to form Elektronska Industrija (Ei).

This manufacturer was suggested by Wolfgang Scheida.


Some models:
Country Year Name 1st Tube Notes
YU  61 RR230 [cloth, EF89] ECH81  See the overview page for RR230 models with schematics.  
YU  60 RR230 [cloth, EBF80] ECH81  See the overview page for RR230 models with schematics.  
YU  60 Lotos U UCH81  SW: 56-20 MHz; MW: 515-1620 kHz. 
YU  59 RR-330 ECH81   
YU  58 RR520 ECH21  Speaker: elliptical 170 x 250 mm, Isophon P1725 19 80, Z = 4.5 Ohm. Some models have a rou... 
YU  55 RR-430 [loctal tubes] ECH21   
YU  60 RR631 ECC85  Built-in ferrite rod antenna.  
YU  58 RR510 [EM11] ECH21   
YU  52 Ozren ECH21   
YU  54 RR-110 UCH21  Variometer tuning. 
YU  64 Leone RR230 UKT ECC85  Wavebands: FM = 87 - 100 MHz SW = 6.2 - 18.9 MHz MW = 515 - 1620 kHz  
YU  58 RR135 ECH21   

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

First logo of RRtbn_yu_rr_rrlogo_old.jpg
Zavodi Nis cyrillic logotbn_yu_rr_rrlogo_cyrillic.jpg
tbn_yu_rr_logo_front.jpg
Thanks for Mr. Gábor Péter, Hungary!tbn_yu_elektronsk_rr230_logo.jpg
Thanks for Mr. Gábor Péter, Hungary!tbn_yu_elektronsk_rr230_logo2.jpg
"Funkausstellung Belgrad", Funkschau 19/1956, S.793tbn_yu_rr_funkschau1956.jpg

  

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