Kingtone Musamman mitarVHFTashar ZabiBi Direct Amplifier (BDA)su ne masu tasiri masu tsada kuma masu dogara da aka tsara don fadadawa da inganta yankin ɗaukar hotoVHFtsarin sadarwa na intercom.Tashoshin Zaɓin BDAs yana bawa mai amfani damar haɓaka masu ɗaukar kaya kawai a cikin kwatance biyu, sama da ƙasa.Zaɓuɓɓukan tashoshi na gida ne ta hanyar RS 232 ko nesa ta hanyar Modem ko RJ45.
BAYANI
Lura 1: Ƙarfin fitar da tsarin aiki ne na adadin masu ɗaukan da suka faru akan tsarin, matakin siginar waɗannan mai ɗaukar s zuwa ga
tsarin haɓaka sigina, samun PA's, da saka asarar masu tacewa a cikin tsarin bidirectional.
Bayanin kula 2: Hoton Hayaniyar Tsarin shine jimlar amplifier NF da asarar tacewa kafin amplifier.Tace hasarar sake dogaro da ita
Faɗin fasfo don mitocin sama, da faɗin fasfon don mitoci na ƙasa, da maƙallan tasha a tsakanin su.
Kasancewar VHF Repeater BDA yana ba da tsarin sadarwar intercom tare da babban adadin zama tashoshi, tunda an ƙara ɗaukar hoto fiye da ɗaukar hoto.Abubuwan da aka saba amfani da su na wannan layin na booters sune yanayi na cikin gida kamar rami, gine-gine, hanyoyin karkashin kasa, da yanayin waje kamar filayen wasa, yankunan karkara da manyan birane.Domin tsarin kayan aiki guda biyu ne, don haka zaku iya adana kuɗin ninka mai ciyarwa.
Ƙayyadaddun bayanai
| Uplink | Downlink | ||
| Mitar Aiki | Tetra380 | 380 ~ 385 MHz | 390 ~ 395 MHz |
| Tetra400 | 400 ~ 405 MHz | 410 ~ 415 MHz | |
| Tetra420 | 415 ~ 420 MHz | 425 ~ 430 MHz | |
| CDMA450C | 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 | |
| IDAN | 806 ~ 821 MHz | 851 ~ 866 MHz | |
| Wasu | kamar yadda aka saba | ||
| Ƙarfin fitarwa | 27/30/33/37/40dBm | 33/37/40/43/46dBm | |
| Riba | 80dB ku | 80-95dB | |
| Downlink zuwa Uplink Separation | 3Mhz min | ||
| MGC | ≥ 31dB/1dB mataki | ||
| VSWR | ≤1.5:1 | ||
| A cikin band flatness | ≤3dB | ||
| Uku oda intermodulation | ≤-45dBc | ||
| Samun daidaito daidai | 0-10dB≤1dB | ||
| 10-20dB≤1dB | |||
| 20-30dB≤1.5dB | |||
| Jinkirin tsarin | ≤5dB | ||
| Ƙungiyar kin amincewa | Fo±0.4MHz | ≤-25dBm | |
| Fo± 0.6MHz | ≤-35dBm | ||
| ± 1 MHz | ≤-48dBm | ||
| Zubar da Zuciya | 9KHz ~ 150KHz≤-36dBm/10KHz | ||
| 150KHz ~ 30MHz≤-36dBm/100KHz | |||
| 30MHz ~ 1GHz≤-36dBm/100KHz | |||
| 1GHz-12.75GHz≤-30dBm/1MKHz | |||
| Hoton surutu | ≤5dB | ||
| I/O Impedance | 50Ω | ||
| RF Connector | N-Nau'i (Mace) | ||
