Kingtone Customized zausVHFChannel XaivBi Directional Amplifier (BDA)yog cov nqi zoo thiab txhim khu kev qha kev daws teeb meem tsim los txuas ntxiv thiab txhim kho qhov kev pab cuam ntawm cheeb tsamVHFintercom kev sib txuas lus systems.Channel Selective BDAs tso cai rau cov neeg siv kom nthuav dav tsuas yog cov neeg nqa khoom xav tau nyob rau hauv ob qho tib si cov lus qhia, uplink thiab downlink.Kev xaiv channel yog programmable hauv zos ntawm RS 232 lossis chaw taws teeb ntawm Modem lossis RJ45.
CEEB TOOM
Lus Cim 1: Lub zog tso zis hluav taws xob yog qhov ua haujlwm ntawm tus lej ntawm cov neeg nqa khoom xwm txheej ntawm lub kaw lus, theem teeb liab ntawm cov cab kuj mus rau
teeb liab txhim kho qhov system, nce ntawm PA's, thiab qhov tso tawm ntawm cov ntxaij lim dej hauv qhov system bidirectional.
Faj seeb 2: Daim duab Noise System yog cov lej ntawm lub amplifier NF thiab cov lim poob ua ntej lub amplifier.Cov lim losses ib re dependent
lub passband dav rau lub uplink frequencies, passband dav rau downlink frequencies, thiab nres band ntawm lawv.
Lub xub ntiag ntawm VHF Repeater BDA muab rau cov kev sib txuas lus sib txuas lus nrog cov neeg nyob hauv cov channel siab, vim tias kev pab them nqi txuas ntxiv dhau ntawm qhov chaw.Cov kev siv ntawm cov kab no ntawm cov booters yog cov xwm txheej hauv tsev xws li tunnels, cov tsev, subways, thiab sab nraum zoov xws li chaw ntau pob, cov chaw nyob deb nroog thiab cov nroog loj.Vim nws yog ib tug dual system ntawm cov khoom, yog li koj yuav txuag tau tus nqi ntawm ob npaug rau feeder.
Specifications
| Uplink | Downlink | ||
| Ua hauj lwm zaus | Tetra 380 | 380 ~ 385 MHz | 390 ~ 395 MHz |
| Tetra 400 | 400 ~ 405 MHz | 410 ~ 415 MHz | |
| Tetra420 | 415 ~ 420 MHz | 425 ~ 430 MHz | |
| CDMA 450 C | 450 ~ 455 MHz | 460 ~ 465 MHz | |
| CDMA 450 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 | |
| Lwm tus | raws li customized | ||
| Tso zis zog | 27/30/33/37/40dBm | 33/37/40/43/46dBm | |
| Tau txais | 80dB ib | 80-95dB | |
| Downlink rau Uplink Separation | 3 Mhz min | ||
| MGC | ≥ 31dB / 1dB kauj ruam | ||
| VSWR | ≤1.5:1 | ||
| Hauv band flatness | ≤ 3dB | ||
| Peb txiav txim intermodulation | ≤-45dBc | ||
| Tau txais kev kho kom raug | 0-10dB≤1dB | ||
| 10-20dB≤1dB | |||
| 20-30dB≤1.5dB | |||
| Kev ncua sijhawm | ≤5dB | ||
| Kev tsis lees paub band | ± 0.4MHz | ≤-25dBm | |
| ± 0.6MHz | ≤-35dBm | ||
| ± 1 MHz | ≤-48dBm | ||
| Spurious Emission | 9KHz ~ 150KHz ≤-36dBm / 10KHz | ||
| 150KHz ~ 30MHz≤-36dBm / 100KHz | |||
| 30MHz ~ 1GHz ≤-36dBm / 100KHz | |||
| 1GHz-12.75GHz ≤-30dBm / 1MKHz | |||
| Nrov duab | ≤5dB | ||
| I / O impedance | 50 Ω | ||
| RF Connector | N-hom (poj niam) | ||
