FA 6000FS

Solid State Amplifiers

Description :

6 kW (FA 6000FC and FA 6000FS ) in the whole 87.5 ÷ 108 MHz band.

COLD FET™ technology. This revolutionary technology, a ITEL international patent, is used in the FA series amplifiers to optimize the input matching of MOS-FET transistors in order to obtain broadband amplification stages without any RF component with a typical RF efficiency > 80 %. This means:
- 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 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.

High modules redundancy: each 1 kW plug-in module is composed of 4 x 300 W stages coupled with high isolation combiners and independent power supply. This architecture assures the highest module redundancy.

High system redundancy: after the plug-in module redundancy starts the great system redundancy realized through the coupling system that permits to the amplifier to work at reduced power even in case of module failure.

On-air serviceable. The 1 kW modules replacement can be made without turning-off the amplifier.

High gain 18 dB gain permits the full output power with low input driving.


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 (±2%) the maximum output power in the whole band.

Switch-mode power supply. High efficiency (> 85 %) and oversized power supply modules grant low heating, low AC power consumption and superior reliability.

Low overheating. The high cooling system efficiency limits at only +10 °C the heatsink overheating respect to the environmental temperature. This permits the service even in overheated sites.

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

Reduced maintenance. Easy accessibility of all parts, no RF failure, no power supply failure, external serviceable air filter reduce dramatically the maintenance costs.

Metering. A complete metering system placed on the front panel permits the precise reading of: all currents and voltages of each MOS-FET stage, forward power, reflected power.

Remote control. It is available as option a remote control interface for the following parameters: voltages and currents of each RF stage, forward power, reflected power, alarms status, on/off, stand-by.

Meets or exceeds international standards for safety and electrical specifications.

FA 6000FS

Solid State Amplifiers

        RF specifications:

FA 5000FC and FA 5000FS
Max. output power	0 ÷ 5000 W
Input power	0 ÷ 160 W
Input connector	N
Output connector	EIA 1 5/8" (others on request)
FA 6000FC and FA 6000FS:
Max. output power	0 ÷ 6000 W
Input power	0 ÷ 180 W
Input connector	N
Output connector	EIA 1 5/8" (others on request)
FA 10000FC and FA 10000FS:
Max. output power	0 ÷ 10000 W
Input power	0 ÷ 350 W
Input connector	N
Output connector	EIA 1 5/8" (others on request)

Common RF Specifications:

Operating frequency range	87.5 ÷ 108 MHz
Input and output impedance	50 W
Harmonic suppression (ref. to carrier)	< - 76 dBc
Synchronous AM (ref. 100% mod.)	< - 60 dB
Asynchronous AM (ref. 100% mod.)	< - 70 dB
RF probe	-50 dBc, 50 W , BNC
Power stability	< 2%
RF efficiency (before the output filters)	80% typ.
Overall efficiency	57% typ.

Measures:

Forward power

Reflected power

DC supply voltage of each RF stage

DC supply current of each RF stage

Protections:

The internal logic circuitry provides proportional fold-back protection, without on-air interruptions, for:

VSWR

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 (optional):

I/O connector

ITEL-25

 

Monitored & controlled functions:

stand-by

forward output power

reflected output power

DC supply voltage of each RF stage

DC supply current of each RF stage

alarms status

AC power Requirements:

Type of DC voltage regulation	switch-mode
Operating voltage	220/240-380 ± 10% Vac 50/60 Hz

three-phase (single-phase on request for the FA 5000FC and FA 5000FS only)

Power drain at maximum power:

8780 VA typ.   (FA 5000FC    FA 5000FS ) 10600 VA typ. (FA 6000FC    FA 6000FS ) 17500 VA typ. (FA 1000FC    FA 10000FS )

Operating conditions:

Cooling	forced air by internal fans
Service	continuous 24/24 h
Operating temperature	- 15 ÷ +45 °C / 5 ÷ +104 F
Relative humidity	95%
Max. installation altitude	3500 mt o.s.l. (other on request)

Weight and size:

Weigh	Kg 420 (FA 5000FC       FA  5000FS  )     Kg 480 (FA 6000FC       FA 6000FS   ) Kg 860 (FA 10000FC     FA 10000FS )
WxHxD	600 x 1500 x 850 mm (FA 5000FC     FA 5000FS  ) 600 x 1500 x 850 mm (FA 6000FC     FA 6000FS  )      2 racks x 600 x 1500 x 850 mm (FA 10000FC     FA 10000FS  )

Options:

KFA/RC

full remote control interface

Features and specifications subject to change without notice.