QF 1218-35B RF Amplifier is a 1.2 GHz bandwidth two-way amplifier. It provides excellent forward and reverse path performance combined with high reliability and a user-friendly layout. GaAs E-pHEMT Push Pull distribution amplifiers, that guarantees the excellent CTB and CSO performance.
Features
l Supports 1.2 GHz bandwidth
l Indoor bidirectional amplifier
l Compact design, small and exquisite
l Improved ESD and surge protection
l Low noise figure
l Standard JXP plug-in PADs for adjustments of attenuation and forward input equalization
l Plug-in DMC jumper for adjustments of forward interstage and reverse equalization
l Gain adjustment 0 - 18 dB (AGC)
Block Diagrams
Specifications
Table 1. Forward Path Specifications
Item | Units | Value |
Pass Band | MHz | 110 ~ 1218 |
Gain | dB | 35 |
Frequency Response | dB | ± 1.0 |
Reference Output Level (CENELEC 42 channel) CSO: 60dB CTB: 60dB | dBµV | 107 |
Gain Adjustment | dB | 0 - min.18 dB (AGC) |
Input Equalizer Adjustable | dB | 0…20 dB 1 dB step, Adjust via JXP PAD |
Interstage Equalizer Adjustable | dB | 0, 4, 8 Adjust via DMC Jumper |
Return Loss | dB | 16 |
RF Test Point | dB | - 30 |
Noise Figure | dB | ≤7 |
Notes:
1. Forward Gain and Noise Figure measured with 0 dB input EQ and 0 dB input pad.
2. Distortion performance reference output level is 107 dBµV (CENELEC 42 channel，flat). Digital refers to 550 MHz to 1.2 GHz loading with QAM carriers at -6 dB relative to analog CW carrier levels.
Table 2. Return Path Specifications
Item | Units | Value |
Pass Band | MHz | 5 ~ 85 |
Gain | dB | 30 |
Gain Control (Input & Output) |
| 0..20 dB 1 dB step, Adjust via JXP PAD |
Equalizer Adjustable | dB | 0, 4 Adjust via DMC Jumper |
Frequency Response | dB | ± 1.0 |
Return Loss | dB | 18 |
RF Test Point | dB | - 30 |
Noise Figure | dB | ≤ 6 |
Table 3. General Specifications
Item | Units | Value |
Power Consumption (High Gain / Low Gain) | W | ≤5 |
Supply Voltage | V AC | 26-65 V (remote PS) / 220 V (local PS) |
RF Connectors | - | F - female, Imperial |
Dimensions (W x H x D) | mm | 105 x 125 x 50 |
Weight | kg | 0,70 |
Mechanical Enclosure | - | IP 54 class protection, diecast housing |
Operating Temperature | °C | - 40 - + 55 |
Storage Temperature | °C | - 40 - + 80 |
Relative Humidity Range | - | 5% - 95% |
Note: Unless otherwise noted, all specifications reflect typical performance and are referenced to 20°C.
Ordering Information
Description | Part Number |
QF1218-35B RF Amplifier, 1.2G, 85/110, 60V | 9920000033 |
QF1218-35B RF Amplifier, 1.2G, 85/110, 220V,Europe Plug | 9920000034 |
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