Microwave Radio Links
Synthesized transmitter from 1.1 to 2.7 GHz.
The transmitter and recivered frequency can be easily setted by the internal dip - switches or by the front panel numerical selector (/C option).
Excellent stereo separation. A built-in group delay and amplitude precorrector guarantees a very low phase distortion and a great stereo separation in the whole 15 kHz band.
Suitable for digital audio. The subsonic overmodulation and the low frequency phase distortion are controlled by a feedback circuit in order to exalt the audio quality of the latest digital systems.
Low THD distortion: the THD value with stereo or mono demodulated and deemphasized signals is negligible.
Flat frequency response: due to the latest generation technology and the components precision the flatness of frequency response is absolute.
Low noise: the excellent signal to noise ratio either in mono or in stereo allows the use of this STLs in multi hops networks without decreasing the audio quality.
High sensitivity: it allows to reduce the STL's antennas investment.
Great RF immunity: allows to operate in most hostile RF environments.
High adjacent channel rejection: obtained thanks to the excellent mechanical shielding and the precision of RF filtering.
High frequency stability with the internal temperature compensated crystal reference.
Full metering: complete diagnostic and measurement front panel displays are available.
Battery operations. VDC option is available for battery or solar panels operations.
Meets or exceeds all FCC and CCIR requirements.
Microwave Radio Links
RF Specifications:
Output frequency range 1.4 –
2.7 GHz
Output power adj via external trimmer from 0 to 5 W
Output impedance
50 W
Output connector N
Local oscillators stability ≤ 5ppm
Harmonics
≤ -68 dB
Spurious ≤ -90 dB
Pass Band filters insertion losses ≤ 0.3 dB
Modulation:
Modulation type F3
Mono input impedance 600 W
MPX input impedance
10K W
Input level +8 to -12 dBm
Mono input pre-emphasis selectable 50/75
µS
Bandwidth 20 Hz to 15 KHz
Attenuation at 19 KHz ≥ 35 dB
Deviation
from pre-emphasis curve ± 0.3 dB
Stereo input (linear) bandwidth
(± 0.5 dB) 20 Hz to 100 KHz
Total harmonic distortion (+/- 75 KHz
dev) < 0.1%
Signal / Noise ratio:
mono (de-emphasised) > 75 dB
stereo
(left or right, de-emphasised) > 70 dB
Power requirements:
Operating
voltage 115/230 Vac ± 10 %, 50/60 Hz
Power drain at 2 W output
power 25 VA
Battery operation 12 Vcc, 2 A
Other characteristics:
MTBF
14 years
Cooling DC Powered Axial Fan
Service 24/24 H Continuous
Operating temperature -5 ÷ +45 °C
Relative humidity 95% Max
Weight and size:
Weight 8 kg
W x H x D (see options) 483 x 90 x 430 mm
ITEL S.r.l. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687