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 
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Enkola y'okutuma
Enkola y'okuddamuEky'okubonereza Ky'omulembe
Tusanyuse okukulaba ku Roymall, wobudde bwo obw'ebintu ebirungi ebikwata ku ggwe. Tukwagala nnyo okukulaba era tukwagala okukwebaza okukola naffe. Tugenda okukwebaza okukola naffe nga tukwongera ku kiseera ky'okwagala mu bigulo byo. Bw'ogula naffe, tojja kufuna ebintu ebirungi ebitonotono ebitambuza obulamu bwo, naye ojja kufuna n'eky'okubonereza ky'omulembe ku buli kugula kwo. Otegefu okunoonya ebintu ebirungi ebitonotono ebigula? Noonya ebintu byaffe ebirungi, gula, era otungule okufuna eky'okubonereza ky'omulembe ne kugula kwo.Enkola Y'okutuma
Tujja kukola bulungi okutuma ebintu byo oluvannyuma lw'okugula era tujja kukakasa nti bijja kufika bulungi. Ebikwata ku kutuma bijja kufunibwa mu email yo ey'okukakasa.Mu ngeri yonna, ebintu bijja kutandikibwa okutumibwa mu nnaku 2.Mu kiseera ky'obuzibu, bijja kulemererwa nga bino: Bw'ogula ku Lw'okuna, Sabbiiti oba ennaku z'amawanga, bijja kulemererwa ennaku 2..Mu ngeri yonna, bijja kusasulwa mu nnaku 5-7 ez'okukola (Ku Lw'okubiri okutuuka ku Lw'okuna) nga tebirina kulemererwa ku nnyonyi oba ebirala ebitakozesebwa..Olw'okuba enkola yaffe y'okutuma eri mu nsi yonna, ekiseera ky'okutuma kijja kuteekwa okuba ku nsi gy'oli, kale kijja kutwala ekiseera era tusaba okumanya nti ojja kutunga nga oli mu nsi endala oba mu nsi endala.1. Enkola Y'okuddamu N'okukyusa
Tujja kukkiriza ebintu ebiguliddwa ku roymall.com. Bw'ogula ku badduukizi baffe oba ku badduukizi endala, tojja kusobola kuddamu ebintu ku ffe. Ebintu ebiguliddwa oba eby'okubonereza by'omulembe tebijja kukkirizibwa okuddamu. Okuddamu ekintu, kijja kuba tekikyali kukozesebwa era kijja kuba mu kifo ekimu nga bwekyafunibwa. Kijja kuba mu kifukiriro eky'obulungi.Oluvannyuma lw'okufuna ebyokulabirako okuva ku ffe, tusaba okukifukirira ebintu byo ebiddayo era otume ku posita oba ku mutume endala.Tujja kukola ebintu byo ebiddayo oba eby'okukyusibwa mu nnaku 3-5 ez'okukola, oluvannyuma lw'okubifuna. Ssente zijja kuddamu mu ngeri ey'obulungi ku ngeri yo ey'okusasula.Tebijja kukkirizibwa okuddamu oba okukyusibwa ebintu ebikozesebwa ku ggwe, okuli obunene obukwata ku ggwe, langi ekwata ku ggwe, oba ebifaananyi ebikwata ku ggwe.Oli mukozi, tusaba okutukwatako. service@roymall.com oba Whatsapp: +8619359849471
2.Enkola Y'okuddamu Ssente
Ojja kufuna ssente zo zonna oba 100% ku ssente zo mu dduuka oluvannyuma lw'okufuna eky'okuddamu era okukikakasa. Ssente zijja kuddamu mu ngeri ey'obulungi ku ngeri yo ey'okusasula. Tusaba okumanya nti ssente z'okutuma n'ebirala tebijja kuddamu. Ssente z'okutuma ez'enjawulo tezijja kuddamu, oluvannyuma lw'okutuma. Ojja kuba osobola okuzisasula era tetujja kusobola kuzikyusa oba kuziddayo, wadde nga ebintu byo bijja kuddayo ku ffe.Oluvannyuma lw'okufuna era okukakasa eky'okuddamu, tujja kukutumira email okukulaga nti twafuna eky'okuddamu. Tujja kukulaga nti eky'okuddamu kyakirizibwa oba ky'okuddamu kyakakanirwa.Bw'olina ebizibu ku ngeri y'okuddamu ssente, tusaba okutukwatako. service@roymall.com oba Whatsapp: +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
