GENERAL DESCRIPTION 
TECHNICAL SPECIFICATIONS  
Carrier power output  100 kW over full frequency range  
Frequency range  5.922 MHz (extension to 3.926.1 MHz if required)  
Output impedance  50 ohms unbalanced or 300 ohms balanced  
Permissible standingwave ratio (SWR)  1.7 at 300 ohms balanced output 2.0 at 50 ohms unbalanced output 

Harmonic radiation  The harmonic radiation meets the requirements of the CCIR Radio Regulations (1976 Edition, Appendix 4)  
Modulation capability  a. Continuous sinewave modulation between 100 and 5000 Hz  ten minutes per hour: 100%  fifty minutes per hour: 76% b. Shortperiod modulation between 50 and 10 000 Hz: 100% 

AF response at nominal power output referred to m = 70% and f = 1000 Hz  a. With f between 60 and 7 500 Hz the response remains within +0.5 to 1 dB b. With f between 50 and 10 000 Hz the response remains with +1 to 2 dB 

AF distortion  at nominal output power, m = 90% and f between 100 and 5000 Hz the distortion factor does not exceed 3%  
Carrier noise level below m = 100%  a. unweighted 55 dB b. weighted (CCITT Rec. P53) 65 dB 

Carrier shift  with sudden application or removal of 100% modulation the variation in the carrier voltage will not exceed 5% (mains voltage drop excluded)  
AF input level  for m = 100% modulation, f = 1000 Hz across 600 ohms input impedance: 4 mW (+6 dBm) or 1 mW (0 dBm)  
Mains supply  380 V, 3 phase a. Permissible voltage fluctuation: with TQ regulator ±10%, without regulator ±3% b. Mains frequency and tolerance (other voltages and frequencies if required): 50 Hz ±2 Hz 

Mains power factor  not less than 0.9 at 100% modulation  
Overall efficiency a. at 0% modulation not less than b. at 30% sine modulation not less than c. at 100% sine modulation not less than 
3.915 MHz 66% 63% 60% 
1522 MHz 65% 62% 58% 
Required time for frequency change  SK 51 F3 about 3 minutes SK 51 C3 max. 1 minute 

Specifications may change without notice 
TUBE COMPLEMENT  
RF stages  AF stages and modulator  
Number  Type  Number  Type 
1  CQK 502  2  CQK 252 
1  CQL 21 
THIS TYPE OF TRANSMITTER IS INSTALLED IN THE FOLLOWING COUNTRIES  
ITU  Country  ITU  Country  
BEL  BELGIUM  COD  CONGO DEMOCRATIC REPUBLIC  
CUB  CUBA  DNK  DENMARK  
EGY  EGYPT  ETH  ETHIOPIA  
FIN  FINLAND  HNG  HUNGARY  
IND  INDIA  IRN  IRAN  
I  ITALY  KOR  KOREA SOUTH  
MLA  MALAYSIA  MTN  MAURITANIA  
MOZ  MOZAMBIQUE  HOL  NETHERLANDS  
POR  PORTUGAL  RRW  RWANDA  
SEN  SENEGAL  SRB  SERBIA  
SNG  SINGAPORE  AFS  SOUTH AFRICA  
SUI  SWITZERLAND  TZA  TANZANIA 