** If you choose Only_HAT item, it is not including Raspberry Pi , you can use Raspberry Pi ZeroW, 3B, 4B, or Windows PC.
** Highly recommended to buy an all-in-one device or the TF card with It's configured Pi-Star OS from me, otherwise you will possible meet many problems and need to deal with them yourself.
My Aliexpress Store:
** Including 10%~15% platform cost ,local country EU IOSS TAX(if your QTH in EU),
** In addition, IOSS tax fees from EU countries will be charged.
** Germany Country duo to the EPR Policy, will not appear in AliExpress/Germany, please buy from my eBay, or directly here. ---- 2022.7.1
Buyers from EU countries please buy in my AliExpress store
The EU including Austria, Belgium, Bulgaria, Hungary, Germany, Greece, Denmark, Ireland, Spain, Italy, Cyprus, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Finland, France, Croatia, Czech Republic, Sweden and Estonia.
If you from United Kingdom, USA, or other countries, place the order in here directly.
Repeater and Simplex mode change anytime , through change the RX/TX board line order.
Support MMDVM mode DMR/YSF/P25/NXDN/DSTAR/POCSAG, Analog (Just work in some Motorola GM340 or GMxx serial)
Double timeslots in DMR mode, act as a mini Digital voice repeater.
Support VHF/UFH, frequency range: depends on your external radio.
High-quality Fox924B 12MHz TCXO, stable with low BER.
Support Raspberry Pi 3B, 3B+, 3A, 4B, Pi ZERO(W), , Compatible with NanoPi NEO, Orange Pi, Compatible to BlueDV(Required to add USBtoTTL or Bluetooth model)
With USB interface ,can connect to Raspberry Pi and PC, inner PL2303 model.
Upgrade through ST-Link, USB, GPIO, continue upgrade support.
Including && components
1x PCB with complete soldering,
1x External radio connector cable
Specs and Docs:
Power require: 5V2A
TCXO: 12.0MHz ,FOX924
HAT: 1.6mm thick, unleaded process
Interface: MicroUSB, GPIO, DB9 female, 6 PinOut
Technical support: email@example.com , www.facebook.com/winters.cn
Microsoft Teams, TeamViewer, Facebook IM, Telegram, WhatsApp.
Payment : PayPal
- 2.5Repeater Board
- 2.5.1Importance Process: Calibration Frequency Offset
- 2.5.2Simplex and Repeater diagram (Motorola 16 Pins and 20 Pins)
- 2.5.3V3F4 Pinout define
- 2.5.4COS LED bright means RX and TX work (in Duplex/repeater mode)
- 2.5.5FT-7900/7800/8900 YAESU
- 2.5.8DR-1X YAESU
- 2.5.11ICOM IC-208H
- 2.5.12GM300/M120 Motorola
- 2.5.15GM950i Motorola
- 2.5.16Kenwood TK8180
- 2.5.17Kenwood TM-451E
- 2.5.18Kenwood TKR750/850
- 2.5.19XPR4550/M8268/XPR5550e DMR serial radio
- 2.5.20XiR M3188/XiR M3688 DMR radio
- 2.5.21Data radio FC302
- 2.5.22MTR2000 Motorola
- 2.5.24RadioCPS DMR radio templates
- 2.5.25FM Analog mode
- 2.5.26Upgrade firmware
- 2.5.27Troubleshooting Possible Error
- 2.5.28Compile firmware
- 2.5.29Adjust TX Level with SDR
- 2.5.30Adjust RX Level with MMDVMCal
- 2.5.31Adjust RSSI Potentiometer
DIY project, not support unconditional returns, please make sure you have enough patience to use this set of open source development kit, have question you can contact firstname.lastname@example.org ,I will use Remote desktop: Teamviewer, Microsoft Teams, help you make it work, if necessary.
Support Digital mode DMR/YSF/P25/NXDN/DSTAR/POCSAG/FM Analog
1) If you choose Only_HAT item, it is not including Raspberry Pi , you can use Raspberry Pi ZeroW, 3B, 4B, or Windows PC.
2) If you select MCS2000/TK8180/8185 DB25 cable , I will make a SIMPLEX cable link to one radio, you can soldering and use in DUPLEX two radios.
3) Please let me know your repeater radio you will link to this board , I will adjust the TXLevel for you , otherwise you need a RTL-SDR or spectrum analysizer, I will help you by Microsoft Teams or Teamviewer.
The components I can provide , click the photo to view big image.
Facebook group https://www.facebook.com/groups/v3f446 (add me as IM friend query more information)
Build up with higher performance components
4PIN header for Nextion .
With DB9 cable (option 0.5/0.75/1.0/1.5 Meter)
Yaesu DR-1X (not work with DR-1XFR, DR-2X)
Yaesu FT-7800, FT-7900, FT-8900, iCOM-2720
Motorola SM120, SM50
Tait repeater serial, HUAWEI E403, HUAWEI 450C
FC302 Data radio
Use SDR#(RTL-SDR) or Radio analylzer (such as CMU200) to view and adjust the TXLevel for you different repeater radio.
Use spectrum analyzer, eg. CMU200
SDRPlay + SDRuno adjust TXLevel
The board details,
Shipping components list
1, Radio Data
5V <-> HAT 5V
RXD <-> HAT TX
TXD <-> HAT RX
GND <-> HAT G
V3F4 Cancel OLED interface, please follow Raspberry GPIO definition, and jump line yourself.
4, Potentiometer ( High-precision )
RX : Adjust RX level
RV2: Secondary adjustment, suggest keep default
TX : Adjust TX level
5, External LED
J7 : Connect external led
J8 : Open,GND for external LED
Repeater board V3F4 with Cable , MMDVM
- Brands NANO-Wireless
- Product Code: Repeater_Kit_MMDVM
- Availability: In Stock
- Ex Tax: $65.00