The AT422 module is adjusted with three buttons located on the front panel.
What technical characteristics does the AT422 amplifier have?
- Two independent roads (sections)
- Amplification of two analog TV channels or two DVB-T
- Automatic equalization of all channel levels at 90 dBuV (analog mode) or 85 dBuV (DVB-T mode)
- Channel deviation: -1 ... + 1 MHz (step of 0.125 MHz)
- High modulation error rate (MER):> 36 dB
- Selectivity +/- 40 dB at 1.25 MHz (analog) or +/- 2 MHz (DVB-T)
- Output level adjustment: 0 ... - 10 dB
- Digital interface with buttons located on the front panel
- Two position screen
- 12 VDC / 0.1 A power for a preamplifier
- DIN rail mounting (usually in a 19 "RACK cabinet)
- Perfect for the transition period in which broadcasters often change the frequency and power of DVB-T multiplexes
What technical specifications does the AT422 amplifier have?
| Name | at422 | ||
| Code | R82509 | ||
| Number of channels (sections) | 2 | ||
| Tuning range of channels | 174...230 MHz (ch. 5...12, ch. width 7 MHz) | ||
| RF input | operation mode | analog | |
| level/impedance [dBμV/ Ω] | 60-85/75 | ||
| frequency range [MHz] | 47-862 | ||
| loop-through gain [dB] | 0 +/-1.5 | ||
| return loss [dB] | > 12 | ||
| RF output | level [dBμV] | 90 | |
| MER (digital signals) [dB] | - | ||
| level adjustment [dB] | 0...-10 (step 1) | ||
| return loss [dB] | > 10 | ||
| Noise figure [dB] | 8 | ||
| Selectivity (analog) | 40 dB at +/-1.25 MHz from channel borders | ||
| Selectivity (DVB-T) | - | ||
| Offset [MHz] | +/-1 (step 0.125) | ||
| Spurious signals level [dBc] | < -55 | ||
| Gain ripple [dB] | +/-1.5 | ||
| Power for masthead amplifier | 12 VDC / 0.1 A max | ||
| Supplying voltage [VDC] | 12 | ||
| Current consumption [A] | 0.45 | ||
| Operating temperature [ºC] | 0...50 | ||
| Dimensions [mm] | 198x107.5x36 | ||
| Weight [kg] | 0.9 | ||