FR 2G
Microwave Radio Links |
||
Synthesized receiver from 1.1 to 2.7 MHz 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.
|
||
FR 2G
Microwave Radio Links |
||
RF Specifications: Output frequency range 1.4 - 2.7 MHz Audio frequency output -8 to +6 dBm on 600 W IF output -10 dBm to 10.7 MHz / 50 W input impedance 50 W input connector N Local oscillators stability ≤ 5ppm de-emphasis 50 / 75 µs input voltage range 1 µV ÷ 20 mV rms Image rejection > 68 dB lowest threshold squelch 1 µV frequency linearity (20 Hz ÷ 100 kHz) ± 0.5 dB Noise factor (typ) 6 dB Pass Band filters insertion losses ≤ 0.3 dB Receiver band (selectivity): 3 dB IF bandwidth @ 180 KHz 60 dB IF bandwidth @ 600 KHz Receiver sensitivity: MonoAural (demod. and de-emphasised): for S/N ≥ 50 dB -90 dBm for S/N ≥ 60 dB -83 dBm for S/N ≥ 70 dB -75 dBm Composite (left or right, demod. and de-emphasised): for S/N ≥ 30 dB -89 dBm for S/N ≥ 40 dB -78 dBm for S/N ≥ 55 dB -65 dBm for S/N ≥ 65 dB -60 dBm Signal / Noise ratio: mono (de-emphasised) > 74 dB stereo (left or right, de-emphasised) > 68 dB Power requirements: Operating voltage 110/220 Vac ± 10 %, 50/60 Hz Power drains 15VA Battery operation (optional) 12 Vcc 1.2 A Operating conditions: MTBF 19 years Cooling natural convection Operating temperature -5°÷ +45°C Relative humidity 95% max Weight and size: Weight 45 kg W x H x D (see options) 483 x 90 x 410 mm |
||
ITEL S.r.l. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687 |
||