at420

UHF band amplifier
two 8 MHz bandwidth sections



Ordering number 02558
Specifications

T Y P E

at420

Ordering number

02558

Sections

2

Tuning range of channels

470-862 MHz

RF input

TV standard

pr.

analog (G, K, I, NZ)

DVB-T*

channel bandwidth

8 MHz

8 MHz

level/impedance

60-85 dBµV/75 Ω

50-80 dBµV/75 Ω

frequency range of RF distribution

47-862 MHz

loop through gain

0 ± 1.5 dB

return loss

>12 dB

RF output

level/ impedance, typical

90 dBµV/75 Ω

85 dBµV/75 Ω

MER ofDVB-Tsignal

-

≥36 dB (input signal MER 38 dB)

frequency range of RF combining

47-2150 MHz

DC pass through

0.3 A

combining through loss Terr/SAT

1.5/2.5 dB

level adjustment range

pr.

0 ÷ -10 dB by 1 dB step

return loss

≥ 10 dB

Noise figure

7 dB

Selectivity, typical

40 dB, ±1.25 MHz from 8 MHz bandwidth border   pr.

40 dB, ±2 MHz from 8 MHz bandwidth border   pr.

Offset**

±1 MHz by 0.25 MHz step

Spurious signals level

≤ -60 dBc

Mirror channel selectivity

≥ 60 dB

Flatness of channel bandwidth, typical

± 1.5 dB

DC feeding for external

pr.

12 V  0.1 A max.

Current consumption***

12 V  0.45 A

Operating temperature range

0° C ÷ +50°C

Dimensions/Weight (packed)

36x198x107.5 mm/0.9 kg

pr. - software control

* 21-69 channels for at420 by G standard, 20-75 channels for at421 by Au standard, 21-60 channels for at440 by G standard

** the offset is used for fine tuning of the channel frequency response

*** without external DC loading