Microwave Radio Links


Synthesized input frequency from 48 to 1020 MHz. The local oscillator is constituted of a direct synthesis circuit with possibility of reception frequency changes using internal dip-switches. No substitution of the crystal is necessary. The input filter need to be realigned in the event of a reception frequency change. This is done using the front panel meter and a screwdriver .

Synthesized output frequency (from 87.5 to 108 MHz) within the same bands of input frequency. Frequency can be easily changed using internal dip-switches .

Adjustable output power (20W) between zero and maximum value indicated on each model's specifications .

Thermostated crystals: allow a reception and transmission of higher precision and stability, also in variable temperature conditions. This means a general improvement of hop distorsions, very harmful for stereo transmissions.

IF 10.7 MHz output allows to realize easily deviations for further radio-link hops or for transmission in the 87.5 to 108 MHz band .

Demodulated BF output to monitor reception signal. Useful to check passing signal. Available with excludable 50/75 µs de-emphasis .

External adjustable squelch and excludable, which allows to fix the silence threshold at the most suitable value. Upon request, a 110/220 Vac output controlled by squelch circuit, is available .

Metering instrumention and controls are located on front panel .

Battery power supply. 12 Vdc power supply can be added, on request, to the 110/220 Vac standard one .


Microwave Radio Links
  RF Specifications:
Output frequency range 87.5 - 108 MHz
output impedance 50 W
output connector N
input impedance 50 W
input connector N
IF output 0 dBm to 10.7 MHz / 50 W
input voltage range 12 µV ÷ 20 mV rms
Image rejection > 68 dB
lowest threshold squelch 25 µV
Noise figure (Vin=2mV) < 8 KTo
Spurious 66 dB

A.F. Data:
Output 0 dBm (600 W)
De-emphasis 50/75 µs standard

Power requirements:
Operating voltage 110/220±15% Vac 50/60 Hz
Power drains 55÷80 VA
Battery operation 12 Vcc 4 A

Operating conditions:
Cooling System D.C. Powered Axial Fan
Service 24/24 H Continuous
Operating temperature -20°÷ +40°C
Relative humidity 95% max

Weight and size:
Weight 12.6 kg
W x H x D (see options) 483 x 136 x 455 mm

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