FA 100
Solid State Amplifiers
  
 


 
 

Generals. This FA 100 FM amplifier is designed to operate on 87.5 - 108 MHz frequency range for FM radio broadcasting appliances, giving up to 100 W of output power in continuous service. It is used as exciter in the PFS Series FM transmitter.

COLD FET™ technology. This revolutionary technology, a DB Elettronica international patent, is used in the KN 100 amplifier to optimize the input matching of MOS-FET transistors in order to obtain broadband amplification stages without any RF component. This means:
- high RF efficiency > 83%
- lower heating
- higher devices safety
- higher total reliability
- low AC power consumption

Extraordinary RF efficiency: the COLD-FET™ technology allows to obtain from the amplifiers the full power rating reducing of almost 20% the devices recommended operating DC voltage and current.

Uninterrupted service. A proportional foldback protection circuit reduces the output power without any on-air interruption, keeping the RF devices always within the safety conditions in case of:
- load mismatching
- environmental over-temperature
- cooling failure
- failure in one or more amplification modules
- failure in power supply modules


Broadband: no adjustments are required for the full power operation in the 87.5÷108 MHz band.

The automatic power control circuit adjusts and stabilizes with precision (±1%) the maximum output power in the whole band.

  
   
 
     
 
 
FA 100
Solid State Amplifiers
  
     
 

RF Specifications:
Operating frequency range 87.5 ÷ 108 MHz
Output power 0 - 100 W adjustable
Output power tolerance 1 dB
Input power 0 ÷ 10 W
Input connector N
Output connector N
Input and output impedance 50 W
Harmonics and spurious emissions (ref. to carrier) -63 dB
Synchronous AM (ref. 100% mod.) < - 50 dB
Asynchronous AM (ref. 100% mod.) -50 dB

AC Power requirements:
Operating voltage 220V 50/60Hz (+15%,-10%)
Power drain at maximum power 195 VA typ.

Other characteristics:
Cooling forced air by internal fans
Service continuous 24/24 h
Operating temperature -5 ÷ +45 °C/ 5 ÷ +104 °F
Relative humidity max. 95%
Max. Installation altitude 4000 m o.s.l.

Mechanicals:
W x H x D 483 x 136 x 400 mm
Weight Kg 11

  
 
 
   

ITEL S.r.l.
TELECOMUNICATIONS AND BROADCASTING SERVICES
Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY
Tel. +39 0434 997667 - Fax. +39 0434 997687