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Amplifiers

TERRA Sub-trunk amplifier, series BD 203U (5/8)

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Manufacturer:
Type of amplifier:

 

 

Advantages:

  • GaAs push-pull technology;
  • changeable backward channel module;
  • damp-proof  molded case;
  • active and passive backward channel;
  • built in additional interstage switched attenuator;
  • built in teat point along the input and output;
  • Type F or 5/8” contact sockets (depending on the model).

Technical specifications:

Title

BA203U

BD203U, BD203U(5/8)

Frequency band

Forward channel*

47/63/75/87 - 862 MHz

Backward channel*

5-30/42/55/65 MHz

Effective gain

34 dB

Amplitude-frequency characteristic unevenness**

±0.5 dB

Effective gain range of adjustment

0-20 dB

Range of adjustment of amplitude-frequency characteristic tilt

0-18 dB

Output level CTB,CSO (EN50083-3)****

106 dBµV

Input and output reflectance factor***

> 14 dB

Noise figure

< 5 dB

Test point absorption

- 20 dB

Wattage

local supply

13 VA/230 V/50 Hz

-

Distant feed

-

8 VA/24-65 V/50 Hz

Maximum let-through current (switched)

-

2 A max.

Operating temperature range

-20°...+50°C

Case / Case with fastening dimensions, Weight (packed)

185×135×76 mm (case); 219×135×76 mm (max)

Weight

1.9 kg

1.6 kg

* - depends on backward channel module: passive pd 02-xx or active pr 02-xx.

** - for amplifiers with backward channel ± 0.7 dB.

*** - when f > 47 MHz, reflectance factor >14 dB (40 MHz) - 1.5 dB/octave.

 **** - measures with interstage line equalizer

You can read the information about active or passive backward channel modules in the amplifiers, series BA203U, BD203U here.

Amplifier BA203U block-diagram:

Блок-схема усилителя BA203U

Amplifier BD203U block-diagram:

Блок-схема усилителя BD203U