15Makilomita 30km mtunda wamavidiyo opanda zingwe opatsirana opanda zingwe
15km 30km 80km 150km long-distance wireless video transmitter-receiver transmission transceiver
M'ndandanda wazopezekamo
Mfundo kugulitsa / Mawonekedwe / Ubwino
Mphamvu ya Signal
Chophimba cholandirira chimatha kuwonetsa mphamvu ya siginecha ya transmitter, ogwiritsa ntchito amatha kusuntha malo abwinoko olandirira.
Video + Data + Control
Kupatula kanema, imathandiziranso njira ziwiri zosinthira deta ndi malamulo owongolera kudzera pa UART pakati pa transmitter ndi wolandila.
m'munsi kachedwedwe
Kuchokera pakompyuta ya wolandila chithunzithunzi, titha kuwona kufalikira kwapano / kuchedwa ndi 28-76ms (millisecond). zambiri
Bandwidth Presettable
Kutumiza kwa bandwidth kumatha kuwoneka pa 3M, 5M, 10M, ndi 20m. tsatanetsatane 10-15-20Mbps
Antenna Awiri pa TX RX Transceiver
ANT1 yamagetsi yama transceiver, ANT2 yolandirira mawonekedwe
Yathunthu mu phukusi
Phukusili likuphatikizapo transmitter, wolandila, onse mbali mlongoti ndi Chalk chingwe. chithunzi
- Kutengera OFDM ukadaulo, kamera yapaintaneti (Kamera ya HD yokhala ndi ethernet) tikulimbikitsidwa.
- Awiri burodibandi zida zolumikizira opanda zingwe (Wolandirayo atha kutsitsa makanema omvera, ikhozanso kukweza zidziwitsozo kwa wolandila)
- Chiyankhulo: 2Madoko a X Ethernet, 3X RS232 madoko ofananira, zotulutsa zomvera (Ntchito zowongolera zambiri) Ngati kamera yanu ndi yotulutsa HDMI, ndiye imafunikira chowonjezera chowonjezera, zomwe zimatha kupanga kanema wa kanema wa HDMI komanso mawu omvera kuzinthu zapa digito kwa transmitter iyi. Pa wolandila, imatha kulumikiza kompyuta yanu kapena NVR mwachindunji, ngati mukufuna kutulutsa kuwunika kwa HDMI, ndiye kuti ikufunikiranso chowonjezera chowongolera kuti chizisunga digito ku HDMI kanema ndi mawu amawu.
- Default Data Interface ndi RS232, Tikhozanso kusintha kukhala TTL, Sbus, kapena RS485, chonde titumizireni ngati mukufuna kudziwa momwe mungalumikizire ndi wowongolera ndege, Mwachitsanzo, Pix khwangwala 4.
- Mtengo wa Port Baud: Data Port 1 zogwiriziza 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800; Data Port 2 ndi Data Port 3 thandizo 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.
- Tinyanga tiwiri: Cholumikizira cha SMA ANT1 mlongoti wamkulu amagwira ntchito munjira ya transceiver, Antenna wothandizira wa ANT2 amagwira ntchito munjira yolandirira.
- Opanda zingwe ntchito pafupipafupi gulu: 1427.9~ 1447.9MHz (1.4G) kapena 806 ~ 826MHz (800MHz), kapena mwakufuna 2401.5~ 2481.5MHz (2.4G) kuthandiza pafupipafupi basi kudumpha mu gulu pafupipafupi (kusakhulupirika pafupipafupi ntchito ndi 1.4G)
- Opanda zingwe bandiwifi: 3MHz, 5MHz, 10MHz, 20MHz, mfundo zonse nawo bandiwifi ntchito, ndipo kuchuluka kwakukulu kogawana dongosolo ndi 30Mbps.
- mode Kusinthasintha: QPSK / QAM16 / QAM64 basi anatengera.
- Machitidwe ochezera: mfundo ndi mfundo, netiweki ya nyenyezi-point-to-multi-point. (Mwachitsanzo, 6 makamera ndi transmitter kwa wolandila m'modzi.)
- Mphamvu yopatsira opanda zingwe: 10W.
- Node kulandira sensitivity: -103 pa bandiwifi 10MHz.
- Support Kubisa kwa AES128 ndikusintha.
- kufala mtunda: 15km / 30km / 80km / 150km mwakufuna.
- Kusintha kwa chipangizocho ndi mawonekedwe ogwirira ntchito opanda zingwe zitha kuwonedwa kudzera pa Webusaiti ya UI za network port kapena doko la serial.
- 2KM utali wautali wamtundu wopanda zingwe wolandila wolandila wokhala ndi chithunzi cha data: DC12 ~ 16V, 33dBm, mphamvu yapakati pa chotumizira makanema ndi ochepera 12W, ndipo pafupifupi mphamvu yogwiritsira ntchito wolandila vidiyoyi ndi yochepera 10W. (Cholumikizira magetsi chachikasu ndi XT30PW / Chithunzi cha XT60PW) (Popanda PA kunja kulikonse, module ili ndi 300mW, 25dBm)
5KM utali wautali wamtundu wopanda zingwe wolandila wolandila wokhala ndi chithunzi cha data: DC24 ~ 25V, 37dBm, mphamvu yapakati pa chotumizira makanema ndi ochepera 22W, ndipo pafupifupi mphamvu yogwiritsira ntchito wolandila vidiyoyi ndi yochepera 16W.
10KM utali wautali wamtundu wopanda zingwe wolandila wolandila wokhala ndi chithunzi cha data: Kufotokozera, 40-41dBm, 28V mphamvu yamagetsi ikulimbikitsidwa, kugwiritsa ntchito mphamvu pazaka zosakwana 1.4A@28V, ndipo kufunikira kwakanthawi kokwanira kwamagetsi kumatha kufikira 2.8A@28V. - kukula: 124*67.8*28.5mamilimita (kupatula cholumikizira chomwe chimatuluka mu chipolopolo, etc.).
- Kunenepa: 0.3W 133 gm, 2W 142 gm, 5W 142g, 10W 242.5 gm
Lowetsani linanena bungwe
kalasi yamtunda wosankha | Kufotokozera |
Efaneti 1 | 4PIN ZH1.5mm cholumikizira cholumikizidwa ndi Ethernet2 |
Efaneti 2 | Cholumikizira cha RJ45 cholumikizidwa ndi Ethernet1 |
kalasi yamtunda wosankha | 9PIN ZH1.5mm cholumikizira, 3 kalasi yamtunda wosankha |
kalasi yamtunda wosankha | 4PIN ZH1.5mm cholumikizira, kalasi yamtunda wosankha |
Amapereka mphamvu mpaka 2.5W mubokosi lachitsulo laling'ono lolemera kuposa | Amapereka mphamvu mpaka 2.5W mubokosi lachitsulo laling'ono lolemera kuposa |
kalasi yamtunda wosankha | TX/RX Antenna port, kalasi yamtunda wosankha |
kalasi yamtunda wosankha | kalasi yamtunda wosankha, kalasi yamtunda wosankha |
mphamvu LED | Nyali yofiyira imakhala yoyaka nthawi zonse |
Node LED | Kuwala kwa buluu kwa chizindikiro cha mtundu wa Node |
Link LED | Kuwala kobiriwira, Wireless ulalo ntchito udindo chizindikiro |
Njira yotumizira
onani Tsatanetsatane wa kasinthidwe ka Web UI
2W 27km Test transmitter ndi mapu olandila
FAQs
Mphamvu ya transmitter iyi ndi batri zonse ndi 3A@28V. Pa nthawi yabwino, batire yomwe tidayesa ndi 7AH, imatha kugwira ntchito kwa maola 2-4. Ngati mumagula batire ya15AH yotsika mtengo, imatha kugwira ntchito mosalekeza kwa maola 4-8.
Osangosintha ma frequency pa intaneti UI parameter mosavuta, pambuyo kusintha pafupipafupi, ikufunikanso kusintha Power Amplifier mkati ndi ma frequency transmitter ndi mlongoti wolandila. Chifukwa chake wogula akuyenera kutsimikizira pafupipafupi zomwe mukufuna musanapereke. Mlongoti umasinthidwa motsatira ma frequency awa.
Ponena za chingwe cha RF, our engineer doesn't recommend that you used it so long. Padzakhala kuchepetsedwa kwa 0.5dB kwa chingwe cha RF cha mita imodzi. Za 3 mita RF chingwe, mphamvu ya chizindikiro idzachepetsedwa ndi 1.5dB.
Pofuna kuthandizira mtunda wautali, Ndibwino kuti mugwiritse ntchito chingwe cha RF chocheperako 1 mita?
Pamenepo, chotumizira ndi chaching'ono kwambiri, ndikwabwino kukhala patali pang'ono kuchokera pa chotumizira kupita ku mlongoti wa transmitter. Chingwe chamagetsi cha transmitter ndi chingwe cha ethernet kuchokera ku kamera kupita ku transmitter chikhoza kukhala chotalikirapo chifukwa palibe zotayika ngati chingwe cha RF..
inde, mavidiyo osasinthika ndi IP RJ45 ethernet port, ngati wanu kamera ndi HDMI kapena SDI kapena AHD, kuphatikiza kabokosi kakang'ono ka encoder kuti athetse vutoli. Chonde onani pansipa chitsanzo.
- Ngati dera lanu lili ndi DVB-T kapena DVB-T2 digito kanema kanema, ndi Ma frequency a TV ndi 170-860Mhz, ili ndi 800Mhz, chifukwa chake sankhani 1.4G ndiyabwinoko.
- Chifukwa mlongoti wa GPS umalandira chizindikiro cha GPS ndipo mayendedwe a GPS pa drone ali mmwamba, mlongoti wathu wa transmitter ukuloza pansi kutumiza chizindikiro pansi. Zotsatira zake, ma frequency a 1.4G pa GPS ndi ochepa.
Kukula kwa phukusi ndi 125 × 23 x 11cm pa. Malemeledwe onse:3.72KG, Kulemera kwa Voliyumu:7.5KG
Nachi chithunzi chonse.
Za pafupipafupi kudumphadumpha, injiniya ali ndi malingaliro anu.
- Monga ma frequency a system ndi 20Mb, ngati bandwidth yanu yasankhidwa 20Mb, ndiye sichingathe kudumpha (mfundo imodzi yokha). Ngati bandwidth yasankhidwa 10Mb, ndiye muli ndi mfundo ziwiri zoti mudumphire, ngati bandwidth yasankhidwa 5Mb, ndiye mwatero 4 amaloza ku hop.
- Ngati 1410Mhz yadzaza, ndiye 1420Mhz nayonso yadzaza, popeza ma frequency ali pafupi kwambiri.
- Pamene akudumpha pafupipafupi, kufalitsa kwa data kapena kanema kudzachotsedwa, ndipo vidiyo yanu idzayimitsidwa.
- Pa nthawi yabwino, ndi bwino kusankha kudumpha SI.
- Ngati mtunda wanu wotumizira ndi wochepera 15 ~ 22km, ndiye tili ndi njira ina yoti tisankhepo, pafupipafupi ndi 110Mb, ndipo ngakhale mutasankha 20Mb bandwidth, zatero 5 mfundo zoti musankhe pa pafupipafupi kudumphadumpha.
Ngati mukufuna kuthandizira S.bus, ndiye chonde tiuzeni tisanatumize, ndipo tidzasintha RS232 yathu kukhala TTL.
TX900 yathu ili ndi madoko atatu a RS232. Ngati mukufuna kuti muthandizire S.bus, kungofunika kuphatikiza chosinthira chaching'ono kuchokera ku S.BUS kupita ku RS232 kuli bwino. ( Mini SBUS Kutembenuza Module Uart kukhala Sbus, Sbus ku Uart ).
Chonde tiuzeni ngati mukufuna doko la sbus musanaperekedwe. Katswiri wathu asintha doko la D2 kuchokera ku RS232 kupita ku Sbus.
RSSI wireless link status data imafuna makasitomala (monga owongolera ndege) kutumiza pamanja malamulo AT kupeza izo. Itha kupezeka m'njira ziwiri:
- Konzani UART3 (data port 3rd) monga AT command serial port, ndiyeno tumizani malamulo a AT kudzera mu UART3 (D3) kupeza. https://ivcan.com/change-d3-from-transparent-serial-port-to-at-command/
- Sinthani mtundu wa firmware 1.5.1 kapena pamwamba, kotero kuti pakhale seva yowonjezera ya TCP mkati kuti makasitomala athe kupeza kudzera mu TCP kutumiza malamulo a AT kuti apeze mawonekedwe opanda zingwe..
- Kuunikira kwa LED kumagwiritsidwa ntchito kuwonetsa mawonekedwe olumikizira opanda zingwe (Mwachitsanzo, ngati ulalo wopanda zingwe wachotsedwa, kuwala kuzimitsa), ndipo palibe pini yodzipatulira yakunja yodziwitsa owongolera ndege.
Kapena onani UART AT mndandanda wamalamulo Pano.
kapena onani https://ivcan.com/how-to-get-the-rssi-and-snr-on-the-drone-transmitter/
- Doko losawerengeka la makanema athu opanda zingwe ndi lowonekera, ndipo palibe deta yomwe imatumizidwa kwa wowongolera ndege. Izi zimayendetsedwa ndi siteshoni yapansi.
- It won't send the failsafe command, koma inu mukhoza kuwona kugwirizana udindo kuwala kuchokera chizindikiro chizindikiro.
- Apa pali kugwirizana udindo chizindikiro mphamvu chizindikiro zikutanthauza
- Osati Bright: Zikuwonetsa kuti ulalo wopanda zingwe wa module sunalumikizidwe
- Red: Zikuwonetsa kuti ulalo wopanda zingwe wa module walumikizidwa, koma mphamvu yamawu opanda zingwe ndiyofooka kwambiri
- lalanje: Zikuwonetsa kuti ulalo wopanda zingwe wa module walumikizidwa, ndipo mphamvu yamawu opanda zingwe ndi yapakatikati
- Green: Zikuwonetsa kuti ulalo wopanda zingwe wa module walumikizidwa, ndipo mphamvu yamawu opanda zingwe ndi yamphamvu kwambiri
- Tikumvetsetsa kuti mukuyembekeza kukhala ndi ntchitoyi, Ngati ndege itataya chizindikiro pakuthawa sibwerera kunyumba chifukwa wowongolera ndege sangamvetsetse kuti ulalo wa rc watayika.
- Muyenera kuwona mawonekedwe a ulalo wa kuwala kwa LED, ngati ndi Orange kapena Red, muyenera kuwongolera ndege mmbuyo pasadakhale.
- Mukhozanso kupeza RSSI pamawindo omwe ali pansipa
Chonde yang'anani zokhazikitsira firmware, tsitsani firmware yaposachedwa pa ulalo womwe uli pansipa.
https://ivcan.com/how-to-upgrade-the-latest-firmware-of-the-wireless-video-transmitter-and-receiver
Pakugwiritsa ntchito bwino, node imodzi ngati chotumizira, mfundo ina ngati wolandira. Ngati mukufuna kuthandizira mtunda wautali kapena pamwamba pa phiri, monga chithunzi pansipa, inde, chonde gulani 3rd nord ngati wokolola.
Mukungoyenera kuyika mfundo yachitatu pakati ndikuyika mfundo yachitatu kukhala 2D3U ndiye chabwino..
Momwe mungakhalire 3rd node kukhala 2D3U?
Khazikitsani ndi AT command:
pa+cfun=0
ku^dstc=0
pa+cfun=1
Yambitsaninso ulalo chipangizo pambuyo ntchito
Pa tsamba la Web UI parameter mangagment ndi gawo la debug,
AT command
Lowetsani PA^DGMR?
Ngati mupeza zotsatira 6602, ndiye izo 15Km mtundu.
Ngati mupeza zotsatira 6603, ndiye izo 30Km mtundu.
4Kanema wa K amathandizidwa.
4Kanema wa K nthawi zambiri amakhala ndi zopitilira 8Mbps, ndipo kanema wa 1080P nthawi zambiri amakhala ndi oposa 2M, kotero mtunda wamakanema athu opanda zingwe potumiza kanema wa 4K udzakhala wamfupi kuposa wa 1080P.
M'mawu amodzi, ndipamwamba tanthauzo la kanema, kufupikitsa mtunda wotumizira.
Kanema compression ndi yaying'ono, ndipo mtunda wotumizira umathandizidwa patali.
Munjira yotumizira mavidiyo, ngati pali kutayika kwa data, chithunzicho chidzawoneka chojambula kapena chosasunthika, kuzizira ndi zochitika zina.
Padzakhala chiwerengero chochepa cha retransmissions pa mlingo wa ulalo opanda zingwe (kumene, zolakwika za data zidzachitikanso ngati zinthu sizili bwino). Kugwiritsa ntchito kwapamwamba kumapeto sikudzadziwa, Ndiponso siidzapempha wotumiza kuti abwezere.
Ngati chizindikiro cha ulalo wopanda zingwe sichili bwino pamalo ena mtunda utatalikitsidwa, ndipo nthawi zonse pamakhala zolakwika pang'ono, n’kosatheka kuzipanga kuti zizitumizidwanso nthawi zonse, kotero kuti chidziwitso cha wogwiritsa ntchito kumapeto chidzakhala chosauka kwambiri.
Wosanjikiza ulalo wopanda zingwe ali ndi njira yochepera yotumiziranso. Tayesa tcp protocol yopatsira pagawo lopatsira makanema (kuyesa kutumizanso kumtunda wapamwamba kudzera pa protocol ya tcp), koma mayeso anapeza kuti palibe kusintha koonekeratu, ndipo zidzabweretsanso kuchedwa kosalamulirika.
- Kutentha kopangidwa ndi mbali ya ndege kumakhala kokulirapo kuposa komwe kuli pansi. Ngati fan ikugwira ntchito, fufuzani ngati mpweya wolowera ndi kutuluka kwa fan yapansi (malo a kutentha akumira kumapeto onse awiri) aletsedwa
- Yesani kusintha mphamvu ya chopatsira mpweya kuchokera ku 24V kupita ku 12 ~ 18V (mphamvu yotumizira idzachepetsedwa kukhala pafupifupi 35 ~ 36DB)
- Chepetsani pang'ono mphamvu yotumizira ndegeyo ndi malamulo omwe ali pansipa a AT: PA^DSSMTP="23" Yambitsaninso mukatha kukhazikitsa
funso: Kodi zokonda izi ndi mphamvu yaikulu ya module? (24 dBm)
yankho: 24dBm ndiye mphamvu yayikulu yotulutsa ulalo wa Module, ndi phindu la PA (pa 14dbm) ziyenera kuwonjezeredwa. Mphamvu yeniyeni yotumizira pambuyo pa 24V yamagetsi PA kutulutsa ndi pafupifupi 38dBm.
# |
Zofuna Kugula |
Inde Ayi |
Zolemba |
1 |
Chigawochi chidzagwira ntchito mu VHF BAND ndi UHF band ndi ma RF transmissions. |
UHF |
1427.9-1467.9MHz |
2 |
Chipangizocho chiyenera kukhala ndi mphamvu ya RF yotulutsa 27 dBm kapena kuposa. |
inde |
2W 33dBm 5W 37dBm 10W 40-41dBm |
3 |
Chipangizocho chidzapereka serial (Bidirectional, Fullduplex) monga mawonekedwe a data. (RS232 kapena RS422) |
inde |
RS232 bidirectional full duplex |
4 |
Kugwiritsa ntchito mphamvu kwa unit sikudutsa 25W. |
inde |
<22W |
5 |
Unyinji wa unit usapitirire 250 gm.
|
inde |
<150 gm (142gm) |
6 |
Chigawochi chiyenera kukhala ndi mlingo wa data osachepera 4.8 Ophatikizidwa HDMI kapena Embedded SDI kapena AV audio |
inde |
RS232:>50kBps Efaneti:>2M Bps |
Nthawi yotsogolera: 10 masiku kwa dongosolo laling'ono.
HS kodi: 8517629900
Kusiyana pakati pa air unit (chopatsilira) ndi ground unit (wolandila) ndi mfundo ziwiri:
Chimodzi ndi mtundu wa chipangizo: Air unit (chopatsilira) ndi access node ndi ground unit (wolandila) ndi node yapakati.
Awiri ndi chiŵerengero cha mlingo wa downlink ndi up ulalo. Kupitilira 30km, chiŵerengero chabwino cha mlingo ndi 4:1 kapena 3:2.
If you don't want to connect the receiver ethernet cable directly to the computer. Ndiye sikwapafupi kupeza wolandila pa netiweki kwanuko.
Nazi njira ziwiri zothetsera inu.
1. Onjezani adilesi ya IP ya gawo la netiweki la 192.168.1.x kumbali ya PC (PC ikhoza kukhazikitsidwa ndi ma adilesi angapo a IP pagawo lamanetiweki)
2. Sinthani IP ya wolandila data wopanda zingwe kuchokera 192.168.1.12 ku adilesi ya gawo la netiweki la 10.220.20.x kuti mukumane ndi netiweki yanu yapafupi.
Kwa mafunso ena ndi mayankho, chonde lankhulani ndi mnzako wapa netiweki wadera lanu kapena mainjiniya, wolandila wathu ali ngati kompyuta yokhala ndi adilesi ya IP, iyenera kusunga gawo la IP adilesi yomweyo, Mwachitsanzo, 192.168.1.xxx.
- inde, pali njira zitatu zochitira izi.
- TX900 ili ndi madoko atatu a data. Siyanitsani kudzera m'madoko osiyanasiyana owonekera, monga D2 kuwongolera ndege zolumikizirana ndi D3 kuwongolera ndege zaumishoni. Choyipa ndichakuti wolandila wa TX900 amayenera kulumikizidwa ndi madoko awiri kuti atumize malangizo padera..
- Gwiritsani ntchito khomo lowonekera lomwelo kuti mutumize zambiri zambiri, ndiyeno yonjezerani ma protocol osanjikiza (monga chidziwitso chamutu) ku deta kuti asiyanitse ndege yomwe iyenera kulandira ndikukonza deta. Choyipa ndichakuti kukonza kutumiza ndi kulandira deta kumakhala kovuta.
- Kapena gwiritsani ntchito olandila awiri: Wolandira mmodzi ndi wa ndege ya mishoni (chopatsilira), ndipo wolandila wina ndi wa drone yobwereza. Kulumikizana ndi ntchito ndizosavuta.
Download & Operation Guide
Kanema wamayeso waposachedwa kuchokera paphiri mpaka 27 km kutali ndi nyanja kuti muwone zotsatira zautali ndikugwira ntchito pa wolandila
Zosankha za TX900B kwa makasitomala ena amafuna pafupipafupi kudumphadumpha.
- TX900B-2W imathandizira ma frequency osiyanasiyana ndi 1420 ~ 1530MHz, ndipo pali 110Mb bandwidth yoti mugwiritse ntchito. (800Mhz frequency range does not support this 110Mb bandwidth)
- Makasitomala amatha kukhazikitsa bandiwifi yogwira ntchito ngati 1.4M/3M/5M/10M/20MHz (Komabe 1.4M/3MHz mwina sikungakhale koyenera kufalitsa makanema). Kenako TX900B-2W ikhoza kugwira ntchito FHSS mode (Frequency-hopping kufalikira sipekitiramu) ndi ma frequency apakati ogwirira ntchito adzasankhidwa okha ndi dongosolo ndipo atha kuchita kudumpha pafupipafupi (pakati pa 1420 ~ 1530MHz) pa ntchito yake.
- Makasitomala amathanso kukonzekera kugwiritsa ntchito ma frequency pafupipafupi mu 1420 ~ 1530MHz yonse ndikuyika chipangizocho kuti chizigwiranso ntchito pamayendedwe okhazikika..
- TX900B-2W imathandizira mtunda wautali kwambiri pa 22km.
- Kupatula ma frequency osiyanasiyana omwe amathandizidwa komanso mtunda wautali kwambiri, maonekedwe a thupi, mawonekedwe, UI, ntchito, ndi zina zotero, TX900B-2W ndi yofanana ndi TX900B-15km-2W yomwe ilipo.
- TX900B-2W imangogwira ma frequency osiyanasiyana ndi 1420 ~ 1530MHz, sichigwirizana ndi ma frequency a 800MHz ndi 2.4GHz.
- Pali mitundu iwiri, Mtengo wa TX900B-2W-15KM, ndi TX900B-2W-22km.
- Monga ma frequency a TX900B-2W ndi 110Mb, kotero ngati mukonza bandwidth yogwira ntchito ngati 10Mb, ndiye mudzapeza 11 amaloza kudumpha.
- TX900B imathandizira 110Mb bandwidth yodumphira pafupipafupi ndipo imakhala ndi magawo atatu otumizira omwe mungasankhe., 22Km, 55Km, ndi 150km.
Download
1 | D3 serial doko ntchito kasinthidwe |
2 | TX900 kufala mandala ndi UDP siriyo malangizo doko |