FT 500

Exciters

 
 





 
     
 

0 - 520 W maximum output power continuously adjustable by external control. Ideal as stand-alone transmitter or versatile exciter for power amplifiers.

COLD FET™ technology. This revolutionary technology, a ITEL Elettronica international patent, is used in the FA  Series amplifiers to optimize the output matching of MOS-FET transistors in order to obtain broadband amplification stages without RF components with a typical RF efficiency > 80 %. This means:
- lower heating
- higher devices safety
- higher total reliability
- low AC power consumption
 
87.5 ÷ 108 MHz. Instant internal or front panel ( /C option ) frequency programmability with 10 KHz steps. No tuning or adjustments required.

Digital stereo coder. High performances built-in digital stereo coder (/S option) with stereo separation (>65 dB) and signal/noise ratio (>80 dB) for a top sound quality.

Remote control. Full remote control capability (/R option) with all main parameters in internal optional board. Power output adjustment, on/off, alarms reset, Pfwd, Pref, frequency deviation measurement and alarms status are the main possibilities of remote control function.
 
FSK IDer. FSK option makes the PM transmitter series fully compatible with FCC automatic identification system.

Top quality sound. The generated signal is characterized by an excellent signal/noise ratio and by negligible residual AM and FM. All this guarantees the best quality of the broadcast signal.o High frequency stability in short and long terms is assured by Digital Phase Locked Loop circuit with low drift quartz. For better frequency stability the /HS option is available.

Deviation limiter. Limits the maximum frequency deviation to a value within the international requirements. This is to avoid adjacent channels invasion in case of accidental over modulation.

Electronic protections: in event of overvoltage (O.V.P.) or transmitting frequency error (LOCK) or mismatching (VSWR) or overtemperature (TEMP) the power output is automatically reduced to keep your station on the air. Every alarm event is displayed by front panel LEDs.

Meters: forward power, reflected power, frequency deviation, all internal mains power supply voltages, L & R, MPX levels are continuosly displayed by front panel meters.

Adjustments and settings. Output power (PWR adj.), frequency deviation (DEV adj.), transmitting frequency (with /C option), compression threshold and level together with release time (with /P option), manual/remote function (with /P option), mono/stereo function (with /S option) are front panel available for instant adjustment and setting.

Output low pass filter. It assures a pure RF spectrum, according to the international requirements.

Switching mode power supply. High efficiency switching mode power supply gives greater reliability and reduce the power consumption.

Battery operation is also available as option (/VDC).

Meets or exceeds international standards for safety and electrical specifications.

 

  
 
     
 
 

FT 500

Exciters

 
     
 

 

COMPACT FM TRANSMITTER or EXCITER

FT 500 P

Technical characteristics

RF Data:

Output frequency range
87.5 ÷ 108 MHz
Output frequency setting
synthesized with PLL, 10 kHz step
(front panel digitswitches microprocessor controlled with /C option )
Output impedance
50 W
Output connector
N
Continuos output power
from 0 to 520 W front panel adjustable
Frequency stability:
Thermal drift (0 ÷ 50 °C)
± 1 kHz (better on request)
Aging drift
± 300 Hz year
Harmonics
< - 72 dB
Spurious
< - 80 dB
Synchro AM modulation
< - 60 dB
Asynchro AM modulation
< - 65 dB

AF Data:

Mono operation:
Input level
-8 ÷ +9 dBm adjustable
Input connector
XLR balanced
Input impedance
600 W
Bandwidth
(± 0.25 dB) 20 Hz ÷ 15 kH
Attenuation for frequency > 19 kHz
> 50 dB
Preemphasis
50 / 75 µs
S/N ratio (± 75 kHz dev. with 1 kHz input, unweighted)
> 78 dB
THD+N (± 75 kHz dev. with 1 kHz input, unweighted)
> 0.1 %
Stereo operation (with stereo coder included in /S models):
L & R input level
- 8 ÷ + 9 dBm adjustable
Input connectors
XLR balanced
Input impedance
600 W
Bandwidth (± 0.25 dB)
20 Hz ÷ 15 kHz
Attenuation for frequency > 19 kHz
> 50 dB
Preemphasis
50 / 75 µs
S/N ratio (± 75 kHz dev. with 1 kHz input, unweighted)
> 72 dB
THD+N (± 75 kHz dev. with 1 kHz input, unweighted)
< 0.1 %
Stereo separation
60 dB (65 dB typ.)
Stereo operation (with external stereo coder):
MPX input level
2.2 Vpp per 75 kHz dev.
Input connector
BNC
Input impedance
10 kW
Bandwidth (± 0.2 dB)
20 Hz ÷ 100 kHz

SCA 1, SCA 2,SCA 3:

Input level
2.2 Vpp per 7.5 kHz dev.
Bandwidth (± 0.25 dB)
40 ÷ 100 kHz

Metering:

± 12 V, + 48 V, forward and reflected power, MPX level , 19 kHz, L & R, deviation
 

Alarms:

VSWR, Overtemperature, Overvoltage

Power supply:

Operating voltage
110/220/240 Vac ± 10 %, 50/60 Hz
Power consumption (at maximum output power)
860 VA
Battery operation (opt.)
48 VDC

Operating conditions:

Cooling
air forced, 24 VDC axial fans
Temperature range
-10 °C÷ + 45 °C
Humidity
95% max

Weight and size:

Weight
29 kg
Dimensions
WxDxH 435 x 530 x 168 mm
Cabinet
19"x 4U

Options:

Front panel frequency setting
/C
Stereo coder
/S
Audio processor
/P
Remote control
/R
Battery operation
/VDC

 

 		 
 
 
   

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