Kingtone Customized frequency VHF Channel Selective Bi Directional Amplifier (BDA)are cost effective and reliable solutions designed to extend and improve the coverage area of VHF intercom communication systems. Channel Selective BDAs allows the user to amplify only desired carriers in both directions,uplink and downlink. Channel selection is programmable locally via RS 232 or remote via Modem or RJ45.
NOTES
Note 1: System output power is a function of the number of carriers incident on the system, the signal level of these carrier s to the
signal enhancement system, gain of the PA’s, and the insertion loss of the filters within the bidirectional system.
Note 2: System Noise Figure is the sum of the amplifier NF and the filter losses prior to the amplifier. The filter losses a re dependent on
the passband width for the uplink frequencies, the passband width for the downlink frequencies, and the stop band between them.
The presence of a VHF Repeater BDA provides to the intercom communication system with a high channel occupancy rate, since coverage is extended beyond site coverage. Typical applications of this line of booters are indoor situations such as tunnels, buildings, subways, and outdoor scenarios such as stadiums, rural areas and dense urban areas. Because it is a dual system of equipment, so you can save the cost of doubling the feeder.
Specifications
| Uplink | Downlink | ||
| Working Frequency | Tetra380 | 380 ~ 385 MHz | 390 ~ 395 MHz |
| Tetra400 | 400 ~ 405 MHz | 410 ~ 415 MHz | |
| Tetra420 | 415 ~ 420 MHz | 425 ~ 430 MHz | |
| CDMA450 C | 450 ~ 455 MHz | 460 ~ 465 MHz | |
| CDMA450 A | 452.5 ~ 457.5 MHz | 462.5 ~ 467.5 MHz | |
| Tetra480 | 480 ~ 485 MHz | 490 ~ 495 MHz | |
| VHF | 136 ~ 174 MHz | 136 ~ 174 MHz | |
| IDEN | 806 ~ 821 MHz | 851 ~ 866 MHz | |
| Others | as customized | ||
| Output Power | 27/30/33/37/40dBm | 33/37/40/43/46dBm | |
| Gain | 80dB | 80-95dB | |
| Downlink to Uplink Separation | 3Mhz min | ||
| MGC | ≥ 31dB / 1dB step | ||
| VSWR | ≤1.5:1 | ||
| In band flatness | ≤3dB | ||
| Three order intermodulation | ≤-45dBc | ||
| Gain adjustment accuracy | 0-10dB≤1dB | ||
| 10-20dB≤1dB | |||
| 20-30dB≤1.5dB | |||
| System Delay | ≤5dB | ||
| Rejection band | Fo±0.4MHz | ≤-25dBm | |
| Fo±0.6MHz | ≤-35dBm | ||
| Fo±1MHz | ≤-48dBm | ||
| Spurious Emission | 9KHz~150KHz≤-36dBm/10KHz | ||
| 150KHz~30MHz≤-36dBm/100KHz | |||
| 30MHz~1GHz≤-36dBm/100KHz | |||
| 1GHz-12.75GHz≤-30dBm/1MKHz | |||
| Noise Figure | ≤5dB | ||
| I/O Impedance | 50Ω | ||
| RF Connector | N-Type (Female) | ||
