Kingtone Customized frequencyVHFKgetho ya ChannelBi Directional Amplifier (BDA)ke litharollo tse sebetsang hantle le tse tšepahalang tse etselitsoeng ho atolosa le ho ntlafatsa sebaka sa tšireletso eaVHFmekhoa ea puisano ea intercom.Li-BDA tse Khethang Lits'oants'o li lumella mosebelisi ho holisa li-carriers tse lakatsehang feela ka mahlakoreng ka bobeli, uplink le downlink.Khetho ea mocha e ka hlophisoa sebakeng sa heno ka RS 232 kapa hole ka Modem kapa RJ45.
LINTLHA TSEO
Tlhokomeliso ea 1: Matla a hlahisoang ke sistimi ke ts'ebetso ea palo ea bajari ba ketsahalo ho sistimi, boemo ba matšoao a bajari bana ho isa ho
Sistimi ea ntlafatso ea lets'oao, phaello ea li-PA, le tahlehelo ea ho kenya li-filters ka har'a sistimi ea litsela tse peli.
Tlhokomeliso ea 2: Setšoantšo sa Lerata la Sistimi ke kakaretso ea NF ea amplifier le tahlehelo ea filthara pele ho amplifier.Sefefa se lahleheloa ke ho its'etleha hape
bophara ba "passband" bakeng sa maqhubu a uplink, bophara ba "passband" bakeng sa maqhubu a theolelo, le "stop band" pakeng tsa bona.
Ho ba teng ha VHF Repeater BDA ho fana ka sistimi ea puisano ea intercom ka sekhahla se phahameng sa ho lula ha likanale, kaha ts'ireletso e atolosoa ka ntle ho tšireletso ea sebaka.Ts'ebeliso e tloaelehileng ea mohala ona oa libota ke maemo a kahare a ka tlung joalo ka lithanele, meaho, litsela tse tsamaeang ka tlas'a lefatše, le maemo a kantle joalo ka mabala a lipapali, libaka tsa mahaeng le litoropo tse teteaneng.Hobane ke sistimi e habeli ea lisebelisoa, kahoo o ka boloka litšenyehelo tsa ho pheta phepelo habeli.
Litlhaloso
| Uplink | Khokahano e tlase | ||
| Khafetsa ea ho sebetsa | 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 | |
| Ba bang | joalo ka tloaelo | ||
| Matla a Output | 27/30/33/37/40dBm | 33/37/40/43/46dBm | |
| Fumana | 80dB | 80-95dB | |
| Theolela ho karohano ea Uplink | 3Mhz mets | ||
| MGC | ≥ 31dB / 1dB mohato | ||
| VSWR | ≤1.5:1 | ||
| Ka sehlopha se bataletseng | ≤3dB | ||
| Litaelo tse tharo tsa intermodulation | ≤-45dBC | ||
| Fumana ho nepahala ha phetoho | 0-10dB≤1dB | ||
| 10-20dB≤1dB | |||
| 20-30dB≤1.5dB | |||
| Ho lieha ha Sisteme | ≤5dB | ||
| Sehlopha sa ho hana | Fo±0.4MHz | ≤-25dBm | |
| Ho ± 0.6MHz | ≤-35dBm | ||
| Fo±1MHz | ≤-48dBm | ||
| Phatlalatso e Senyehileng | 9KHz~150KHz≤-36dBm/10KHz | ||
| 150KHz~30MHz≤-36dBm/100KHz | |||
| 30MHz~1GHz≤-36dBm/100KHz | |||
| 1GHz-12.75GHz≤-30dBm/1MKHz | |||
| Setšoantšo sa Lerata | ≤5dB | ||
| I/O Impedance | 50Ω | ||
| Sehokelo sa RF | N-Mofuta (Mosali) | ||
