Duplex MMDVM Hotspot Board UHF VHF Buil-in Antenna Support P25 DMR YSF for Raspberry Pi Zero W 0W 2W 3B+ 4B 4B+
Direct purchase from the factory 
Pūmau hoko haumaru
Koha kore utu
Kaupapa tuku
Kaupapa hokiKoha Kore Utu
Nau mai ki Roymall, tō paetukutuku ngaio mō te hoko koha toa matua. Ka whakahōnoretia, ka mihi ki tō tautoko, ā, ka hiahia mātou ki te whakaatu i tō mātou mihi mā te tāpiri i tētahi wāhanga hiamo ki āu hoko. I a koe e hoko ana i a mātou, kāore koe e whai wāhi ki te ngahau i ngā hua kounga teitei e whakapai ake i tō oranga, engari ka whiwhi hoki koe i tētahi koha kore utu muna me ia tono ka tukuna e koe. Kua rite ki te tirotiro i tō mātou kohinga, ki te kimi i ō koha tino pai? Tirohia tā mātou kohinga o ngā taonga toa matua, tuku mai i tō ota, ā, ka tūmanako ki te hiamo o tō koha kore utu e tae mai ana i te taha o tō hoko.Kaupapa Tukunga
Ka mahi uaua mātou ki te tuku taonga ki a koe i muri i te whiwhinga o āu ota, ā, ka whakarite kia tae haumaru mai. Ka whakaratohia ngā taipitopito tukunga i roto i tō īmēra whakau.I te nuinga o ngā wā, ka tukatukahia ngā ota i roto i te 2 rā.I raro i ngā āhuatanga motuhake, ka rētihi pēnei: Ka tonoa e koe he ota i te Rāhoroi, i te Rātapu, i ngā rā hararei rānei, ka rētihi mō te 2 rā..He tikanga, e 5-7 rā mahi (Mane ki te Paraire) me kore e pāngia e te rētihi rererangi, e ētahi atu āhuatanga taiao rānei..Nā te mea kei te ao whānui tā mātou ratonga tuku, ka whakawhirinaki ngā wā tuku ki tō wāhi, nō reira me tatari mō ētahi wā mēnā kei ngā takiwahi tawhiti, kei ngā whenua tawhiti rānei koe.1. Kaupapa Hoki & Whakawhiti
Ka whakaaetia e mātou anake ngā taonga i hokona mai i roymall.com. Mēnā ka hoko koe i ō mātou kaiwhakarato ā-rohe, i ētahi atu kaihoko rānei, kāore e taea te hoki mai i a mātou. Kāore e whakaaetia ngā taonga hokohoko mutunga, ngā koha kore utu rānei hei hoki.Kia uru ki te hoki, me kore e whakamahia tō taonga, ā, me noho ki te āhuatanga i whiwhi ai koe. Me noho hoki ki te kōpaki taketake.I muri i te whiwhinga o ngā tohutohu hoki mai i a mātou, tēnā koa kōpaki i ō taonga kua hoki mai, ka tuku i tō kōpaki ki te poutāpeta ā-rohe, ki tētahi kaihere rānei.Ka tukatukahia tō hoki, tō whakawhiti taonga i roto i te 3-5 rā mahi i muri i te whiwhinga. Ka tukatukahia te moni hoki, ka hoki aunoa ki tō huarahi utu taketake.Kāore e taea te whakaaetia he hoki, he whakawhiti rānei mēnā i hangaia motuhake te hua, tae atu ki te rahi whaiaro, te tae whaiaro, te tā whaiaro rānei.Mehemea kei te hiahia āwhina anō, whakapā mai. service@roymall.com Whatsapp rānei: +8619359849471
2.Kaupapa Moni Hoki
Ka whiwhi koe i te moni hoki katoa, i te 100% moni hoki toa i muri i te whiwhinga o te kōpaki kua hoki mai, me te tirotiro. Ka tukatukahia te moni hoki, ka hoki aunoa ki tō huarahi utu taketake.Kia mōhio, kāore e taea te utu hoki i ngā utu tuku, i ngā utu, i ngā utu rānei. Kāore e taea te utu hoki i ngā utu tuku taapiri ina kua tukuna te kōpaki. Kei a koe te kawenga ki te utu i ēnei utu, ā, kāore e taea e mātou te whakakore, te utu hoki rānei, ahakoa ka hoki mai te ota ki a mātou. I muri i te whiwhinga me te whakau i tō taonga kua hoki mai, ka tuku īmēra mātou ki a koe hei whakamōhio kua whiwhi mātou i tō taonga kua hoki mai. Ka whakamōhio hoki mātou ki a koe mō te whakaaetanga, te whakakore rānei o tō moni hoki.Mēnā he raruraru ōu e pā ana ki te tukatuka moni hoki, whakapā mai. service@roymall.com Whatsapp rānei: +8619359849471Product Name: Duplex MMDVM Hotspot Board
Frequency Support: UHF 430-440MHZ, VHF 140-150MHz
Compatibility: Raspberry Pi Zero W, 2W, 3B+, 4B, 4B+
Modem Type: STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO)
Onboard Antenna: Yes
This link is only for Mini Duplex MMDVM boardsSetting up Pi-star software and raspberry hardware (rpi 0-3) New pi4b needs to remove Right SocketPi-star general configuration for MMDVM_DUPLEXSet controller mode: duplex repeater or simpleRadio frequency: Freq: 144-148, 219-225, (main frequency band) 420-475, 842-950Duplex mode: Example: RX:438.000000 TX:433.000000Duplex mode: Example: RX:145.000000 TX:433.000000Simple mode: Example: RX:438.000000 TX:438.000000Radio/Modem Type: STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO) or any other (GPIO board)Options: (not needed now, some older boards need to be set)Admin->Expert->Edit MMDVMHOST->RXOFFSET=0 TXOFFSET=0 (default value in pistar)(Update: 2019/2 new 3225 TCXO so 0ffset is 0 )Update new firmware: (pi-star/Expert/ssh access/user:pi-star pass:raspberry)sudo pistar-mmdvmhshatflash hs_dual_hatThe default bit error rate is less than 5%, and the default 0ffset is 0. If the bit error rate is greater than 5%, as long as the signal can be received, it can be corrected through 0ffset.
Features:
1. Versatile: This duplex MMDVM hotspot supports DMR, P-25, D-Star, and System Fusion, accommodating various radio communications preferences.
2. Raspberry Pi Compatible: The hotspot mounts cleanly on all current types of Raspberry Pi, inclusive of the Pi Zero W, 2W, 3B+, 4B, and 4B+, making it ideal for Raspberry Pi enthusiasts.
3. Dual Mode: The device supports both Duplex and Simplex modes, allowing for flexible communication sessions. In Duplex mode, it supports 2 time slots with simultaneous Tx and Rx.
4. No Ofset Required: With the best adjustment set at TX=0, RX=0, this device requires no ofset, simplifying the setup process for users.
5. Indicator LEDs: The board includes built-in LEDs that indicate status, along with status words on the shell for clear and straightforward device operation.
Package Includes:
1 x Duplex MMDVM Hotspot Board
