FT SERIES
FM SOLID STATE TRANSMITTERS
 
 




 
      
 
  • The FS series transmitters are designed to operate on 87.5 - 108 MHz frequency range for FM radio broadcasting appliances with RF output power from 1 kW up to 30 kW. 
  • Power upgradeable. Each model of FS series transmitters can be later power upgraded up to 30 kW, and so the FS series covers all broadcast operators present and future needs.
  • Audio performances. The FS series FM transmitters can include the standard exciter FT 20 K or the new graphic LCD screen FT 30 L for a superior analogue or digital audio performance.
   
 
     
 
 
FT SERIES
FM SOLID STATE TRANSMITTERS
 
       
 
  • Low dimensions and weight. Designed to fit into space-limited facilities, FS series transmitters feature one of smallest dimensions and weight in the industry, simplifying transport, installation and maintenance.

  • COLD-FET technology. This revolutionary technology, a ITEL's international patent, is used in the FS series transmitters to optimize the MOSFET's output matching in order to obtain broadband amplification stages without any RF component. This means:
    - higher RF efficiency > 83%
    - lower heating
    - higher devices safety
    - higher total reliability
    - low AC power consumption

  • MosFets Safety. The COLD-FET technology permits to obtain from the PA the full power rating reducing of almost 15% the MosFets recommended operating DC voltage and current.

  • Uninterrupted service. A true proportional foldback protection circuit keep the transmitters always on the air reducing the output power in case of:
    - antenna VSWR
    - environmental over-temperature
    - failure in one or more amplification modules
    - failure in one or more power supply modules

  • Frequency-agile FS series transmitters are fully broadband. All RF stages, comprising the output filters, can operate on any FM channel, selectable via a integrated digital selector or remotely (optional).

  • On-air serviceability. Power amplifier modules can be safely removed during operation, for on-air maintenance. Failure or module removal keep always transmitter on-air.

  • Modular assembly. Easy removable identical and interchangeable power amplifier modules reduce spare requirement and service costs.

  • Automatic power control circuit maintains constant RF output with precision (1%).

  • Advanced controller provides full front panel transmitter control capabilities and extensive metering of individual modules. Standard or special remote control interface is also available.

  • Power supply. A rugged, high-efficiency (> 93%) power supply support each PA module and can be on-air removed and replaced. Power supplies are protected from incoming AC line overvoltage, overcurrent, transient and lightning. 

  • High redundancy. High on-air reliability is assured by using multiple power amplifier modules, each comprised of four individual PA's, with independent power supplies and optional dual exciters.

   
 
 
  

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

 

 
 
FT SERIES
FM SOLID STATE TRANSMITTERS
 
     
 
  • Cooling: an oversized standard air cooling system with internal fans extends transistors life. In the standard version, air enters trough removable filters in the front panel of each PA and power supply module. Air is exhausted from the rear of cabinet or from the top (optional). A special version is also available when it is necessary to separate transmitter cooling air from building air. 

  • Low overheating. Thanks to the high RF efficiency, due to COLD-FET technology, the heatsink overheating respect to the environmental temperature is limited at + 10C only. This permits to operate even in overheated sites.

  • Low AC power consumption. The high overall efficiency means a reduction of AC power consumption and operating costs.

  • Low maintenance. The overall operating costs are reduced and the maintenance is optimised for three year intervals thanks to the absence of wear-out mechanism in solid state devices.

  • Meets or exceeds international standards for safety and electrical specifications.

   
 
 
 

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

 

 
 
FT SERIES
FM SOLID STATE TRANSMITTERS
 
     
   

Technical Characteristics 

RF specifications: 

FT 1000FS:
Max. output power 0 - 1000 W 
Output connector EIA 7/8" or DIN 7/16"
Overall efficiency 68% typ.
Power consumption (at maximum power) 1470 VA

FT 2000FS:
Max. output power 0 - 2000 W 
Output connector EIA 7/8" (others on request)
Overall efficiency 67% typ.
Power consumption (at maximum power) 3000 VA

FT 3000FS:
Max. output power 0 - 3000 W 
Output connector EIA 7/8" (others on request)
Overall efficiency 66% typ.
Power consumption (at maximum power) 4550 VA

FT 4000FS:
Max. output power 0 - 4000 W 
Output connector EIA 1+5/8" (others on request)
Overall efficiency 66% typ.
Power consumption (at maximum power) 6100 VA

FT 5000FS:
Max. output power 0 - 5000 W 
Output connector EIA 1+5/8" (others on request)
Overall efficiency 66% typ.
Power consumption (at maximum power) 7600 VA

FT 6000FS:
Max. output power 0 - 6000 W 
Output connector EIA 1+5/8" (others on request)
Overall efficiency 66% typ.
Power consumption (at maximum power) 9100 VA

FT 10000FS:
Max. output power 0 - 10000 W 
Output connector EIA 1+5/8" (others on request)
Overall efficiency 65% typ.
Power consumption (at maximum power) 15400 VA

FT 12000FS:
Max. output power 0 - 12000 W 
Output connector EIA 3+1/8" (others on request)
Overall efficiency 65% typ.
Power consumption (at maximum power) 18500 VA
FT 20000FS:

Max. output power 0 - 20000 W 
Output connector EIA 3+1/8" (others on request)
Overall efficiency 65% typ.
Power consumption (at maximum power) 31000 VA

FT 30000FS:
Max. output power 0 - 30000 W 
Output connector EIA 3+1/8" (others on request)
Overall efficiency 64% typ.
Power consumption (at maximum power) 47000 VA

Common RF Specifications:

Operating frequency range 87.5 108 MHz
Output impedance 50 V 
Spurious and harmonic suppression (ref. to carrier) < - 80 dBc
Synchronous AM (ref. 100% mod.) < - 50 dB
Asynchronous AM (ref. 100% mod.) < - 55 dB
RF Probe -70 dB, 50 V, BNC
Power stability < 1%
RF efficiency 83% typ.

A.F. Data (ref. to ITEL Exciters):
Mono operations:
Input level -10+12 dBm adj. 
Input connectors XLR female/bal. 
Input impedance 600 V
Bandwidth ( 0.25 dB) 20 Hz15 KHz 
Pre-emphasis 50/75 s selectable and bypassable
Deviation from pre-emph. curve 0.5 dB 
FM S/N ratio (75 kHz deviation at 1 kHz, 50 s de-emph.) > 80 dB (typ. 82 dB)
THD < 0.1 % (typ. 0.08 %)
19 kHz attenuation > 55 dB 
AM syncro residual (ref. 100% mod.) < -64 dB 
AM asyncro residual (ref. 100% mod.) < -68 dB 

Stereo operations (MPX input):
Input level -10+12 dBm 
Input connector BNC, unbal. 
Input impedance 10 kV
Bandwidth ( 0.1 dB) 20 Hz100 KHz 
FM S/N ratio (75 kHz deviation at 1 kHz, demodul., 50 s de-emphasis) > 74 dB (typ. 76 dB)
Stereo separation (20 Hz15 kHz) > 63 dB (typ. 65 dB)
THD < 0.2% (typ. 0.1 %)

Stereo coder characteristics (option /S):
Input connectors (L&R) XLR, bal. 
Input impedance 600 V
Input levels -10+12 dBm 
19 kHz attenuation > 55 dB 
Bandwidth ( 0.25 dB) 20 Hz15 KHz 
S/N ratio (75 kHz dev. at 1 kHz, demodul., 50 s de-emphasis) > 80 dB (typ. 82 dB)
Stereo separation (20 Hz15 kHz) > 65 dB (typ. 68 dB)
THD < 0.1% (typ. 0.08%)

Measures (on the Combining and Control unit front panel):
Total output forward power 
Total output reflected power
Output forward power of each plug-in 1 kW module
Output reflected power of each plug-in 1 kW module
DC supply voltage of each plug-in 1 kW module
DC supply current of each plug-in 1 kW module

Protections:
The internal logic circuitry provides proportional fold-back protection, without on-air interruptions, for:
- VSWR
- air over-temperature or insufficient cooling
- output combiner unbalancing
- fault of RF or power supply stages

Automatic power control:
The automatic power control circuitry provides the output power regulation with a precision of 2% over the whole band.

Remote control interface:
I/O Connector ITEL-25

Remotely Monitored & controlled functions:
- stand-by
- Total forward output power
- Total reflected output power
- DC supply voltage of each plug-in 1 kW module
- DC supply current of each plug-in 1 kW module
- alarms status

AC Power requirements:
Operating Voltage 110/220/240 Vac 10% 50/60 Hz single phase or 208/220/380 Vac 10% 50/60 Hz three phases

Operating conditions:
Cooling forced air by internal fans
Service Continuous 24/24 h
Operating temperature -5 +45C
Relative humidity 95%
Max.installation altitude 3000 m a.s.l.

Mechanicals:

Dimensions (WxHxD):
FT 1000FS 540 x 240 x 720 mm - single rack
FT 2000FS 540 x 580 x 720 mm - single rack
FT 3000FS 540 x 580 x 720 mm - single rack
FT 4000FS 540 x 1120 x 720 mm - single rack
FT 5000FS 627 x 1370 x 803 mm - single rack
FT 6000FS 627 x 1370 x 803 mm - single rack
FT 10000FS 627 x 1640 x 803 mm - single rack
FT 12000FS 627 x 1640 x 803 mm - single rack
FT 20000FS 627 x 1640 x 803 mm - 2 racks
FT 30000FS 627 x 1640 x 803 mm - 3 racks

Weight:
FT 1000FS 70 kg
FT 2000FS 125 kg
FT 3000FS 168 kg
FT 4000FS 280 kg
FT 5000FS 310 kg
FT 6000FS 355 kg
FT 10000FS 495 kg
FT 12000FS 570 kg
FT 20000FS 985 kg
FT 30000FS 1370 kg

Options:
KFS/RC Full remote control interface
Air cooling exit cabinet top side or rear (to be specified)
Air cooling parts Chemineys and hardware on request

   
 
 
 

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