Kingtone Customized frequencyVHFChannel SelectiveBi Directional Amplifier (BDA)inodhura uye yakavimbika mhinduro dzakagadzirirwa kuwedzera nekuvandudza nzvimbo yekuvharaVHFintercom kutaurirana masisitimu.Channel Selective BDAs inobvumira mushandisi kukwidziridza chete anodiwa anotakura mumativi ese, uplink uye downlink.Kusarudzwa kwechiteshi kunorongwa munharaunda kuburikidza neRS 232 kana kure neModem kana RJ45.
MAZANO
Cherechedzo 1: Sistimu yekuburitsa simba ibasa rehuwandu hwevatakuri chiitiko pane sisitimu, chiratidzo chechiratidzo cheaya anotakura kusvika kune
chiratidzo chekusimudzira system, kuwana kwePA's, uye kurasikirwa kwekuiswa kwemasefa mukati meiyo bidirectional system.
Cherechedzo 2: Sistimu Noise Figure ihuwandu hweamplifier NF uye kurasikirwa kwesefa kusati kwasvika amplifier.Sefa inorasikirwa nekutsamira kwairi
iyo passband hupamhi yeuplink frequencies, iyo passband upamhi hweiyo downlink frequencies, uye yekumira bhendi pakati pavo.
Kuvapo kweVHF Repeater BDA kunopa iyo intercom yekutaurirana system ine yakakwira chiteshi chekugara, sezvo kufukidzwa kuchiwedzerwa kupfuura kufukidzwa kwesaiti.Zvakajairika mashandisirwo eiyi mutsara wemabhooter mamiriro emukati senge tunnels, zvivakwa, subways, uye ekunze mamiriro akaita senhandare, nharaunda dzekumaruwa nenzvimbo dzemadhorobha.Nekuti iviri system yemidziyo, saka iwe unogona kuchengetedza mutengo wekupeta kaviri iyo feeder.
Zvinotsanangurwa
| Uplink | Downlink | ||
| Kushanda 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 | |
| Vamwe | as customized | ||
| Output Power | 27/30/33/37/40dBm | 33/37/40/43/46dBm | |
| Gain | 80dB | 80-95dB | |
| Downlink kune Uplink Separation | 3Mhz min | ||
| MGC | ≥ 31dB / 1dB nhanho | ||
| VSWR | ≤1.5:1 | ||
| Mubhendi flatness | ≤3dB | ||
| Matatu odha intermodulation | ≤-45dBc | ||
| Wana kugadzirisa kwakarurama | 0-10dB≤1dB | ||
| 10-20dB≤1dB | |||
| 20-30dB≤1.5dB | |||
| System Kunonoka | ≤5dB | ||
| Kuramba bhendi | 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 (Mukadzi) | ||
