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Amplifiers

House medium-power TERRA amplifiers, series HA127, HA127R30, HA127R65

1
Manufacturer:
Type of amplifier:

 

General layout

 

A view with cover removed 

Benefits:

The switchable gain of forward channel and the switchable (active or passive) feedback channel. The amplifier has a built-in mains-operated (~ 198 ... 250 V) power supply and is placed in a light moulded case.  These amplifiers have a built-in attenuator and a corrector in the forward channel as well as a built-in generator in the feedback channel. The amplifiers are produced in three versions: HA127 – without a feedback channel, HA127R30 – with a feedback channel at 5-30 MHz, and HA127R65 – with a feedback channel at 5-65 MHz. 

Basic parameters:

  • A push-pull output stage;
  • Built-in smooth controls over gain and equalizing;
  • Switchable gain of the forward channel;
  • A switchable passive or active reversing channel;
  • A moulded case.

 Technical features:

TYPE

HA127

HA127R30

HA127R65

Forward channel

Frequency range

47-862 MHz

87-862 MHz

Gain (switchable)*

24-27/32-36 dB (fixed pre-correction of amplitude-frequency response)

Gain control range

18 dB

Gain slope control range

18 dB

Non-uniformity of  amplitude-frequency response *

± 0.5 dB

± 0.75 dB

Input and output reflection factor

> 14 dB at 40 MHz; -1.5 dB/octave, but no less than 10 dB

Max. output level

IMD3=60 dB (DIN45004B)

118 dBµV

Max. output level

 of Closed Circuit TV (EN50083-3)

101 dBµV

Max. output level

 of CSO (EN50083-3)

101 dBµV

Noise ratio

7 dB

Feedback channel

Frequency range

-

5-30 MHz

5-65 MHz

Gain (switchable)

-

21-24 dB (fixed pre-correction of amplitude-frequency response)/ -3 dB (passive)

Gain control range

-

18 dB

Non-uniformity of  amplitude-frequency response

-

± 0.75 dB

Reflection factor

-

>14 dB

Noise ratio

-

6 dB (active)

Max. output level

IMD3=60 dB (DIN45004B)

-

114 dBµV (active)

Common

Power demand

230 V/50 Hz/5W

230 V/50 Hz/7.5 W

Range of operating temperatures

-20°...+50° C

Overall dimensions /Weight (in pack)

185x91x47 mm/0.85 kg


*  for amplifiers with the feedback channel, it is measured at a frequency that is 10 MHz higher than the initial frequency of

  forward channel.

Block-diagram of amplifier HA127