Product Detail

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 300 to 512 MHz) within the same bands of input frequency. Frequency can be easily changed using internal dip-switches .

Adjustable output power (15W) 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 .


	FZ 4B 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 300 to 512 MHz) within the same bands of input frequency. Frequency can be easily changed using internal dip-switches . Adjustable output power (15W) 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 .




	FZ 4B Microwave Radio Links

	RF Specifications: Output frequency range 310 - 512 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. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687