Preview.
MMDVM REPEATER @BI7JTA
BI7JTA's MMDVM Google blog bi7jta@gmail.com https://www.bi7jta.org/
Friday, March 15, 2024
Friday, June 9, 2023
Sunday, November 20, 2022
Saturday, November 19, 2022
MMDVM Family #2022-to-NOW #BI7JTA #DMR/YSF/DSTAR/NXDN/P25/POCSAG
Family of MMDVM ver.2022
MMDVM Repeater V3F4
Duplex HotSpot for Raspberry Pi 3B/4B
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Duplex_Mini HotSpot for Raspberry Pi Zero/W
All assemble 2.4inch/3.5/5/7:
Devices && software: https://www.bi7jta.org/shop/duplex-neospot-model-a-3d-white-2-4inch-34
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Cool FAN Simplex hotSpot
Simplex hotSpot for Raspberry Zero/W
NANO hotSPOT(CNC Case )
Monday, September 27, 2021
Nextion to MMDVM Hotspot
Nextion to MMDVM Hotspot
Nextion RX <---> TX HAT /USBtoTTL
Nextion TX <---> RX HAT /USBtoTTL
Nextion GND <---> GND HAT /USBtoTTL
Nextion 5V <---> 5V HAT /USBtoTTL
https://www.bi7jta.org/wiki/index.php?title=Main_Page#Nextion_to_Repeater_V3F4
Friday, September 24, 2021
Correct method for adjusting TXLevel #MMDVM_REPEATER
Monday, August 23, 2021
BI7JTA in AliExpress, eBay, IOSS TAX and EPR Policy in Germany. ----2022.7.1
My Blog Store:
** Not need pay any platform cost,
** Buyers from USA, Canada, Southeast Asia, Japan, Switzerland and South Africa, recommend this purchase method (except for buyers from EU countries, EU buyers recommend aliexpress store).
My Aliexpress Store:
https://www.aliexpress.com/store/5077377
** Including 10%~15% platform cost ,local country EU IOSS TAX(if in EU),
** In addition, IOSS tax fees from EU countries will be charged. Buyers from EU countries recommend this purchase method.
** Germany Country duo to the EPR Policy, will not appear in AliExpress/Germany, please buy in eBay link , or directly bi7jta.org/cart/. ---- 2022.7.1
DE BI7JTA,73!
Monday, May 24, 2021
How to Configure your BM Static Talkgroup use API-KEY #MMDVM #DMR
Tuesday, May 18, 2021
How to Install NextionDriver for Model 10 #MMDVM
Detail command (Ctrl +C, Ctrl +C )
#Make SD card writable
rpi-rw;
#uninstall history NextionDriver
sudo rm -rf /usr/local/bin/NextionDriver;
cd /home/pi-star;
# clone github code, some unknow issue will cause NextionDriver service not communitication with MMDVMhost service,when use OD7LDS github new code, so this use offline zip code, the old version.
# sudo rm -rf NextionDriverInstaller;
# git clone https://github.com/on7lds/NextionDriverInstaller.git;
sudo rm -f on7lds-NextionDriverInstaller-Offline.zip*;
sudo rm -rf NextionDriver;
sudo rm -rf NextionDriverInstaller;
sudo wget https://www.bi7jta.org/files/MMDVM_Nextion/Driver/on7lds-NextionDriverInstaller-Offline.zip;
sudo unzip on7lds-NextionDriverInstaller-Offline.zip;
# install Driver
sudo chmod +x NextionDriverInstaller/install.sh;
sudo NextionDriverInstaller/install.sh;
echo "Done"
Buy product from me with Nextion Display www.bi7jta.org/cart
73 DE BI7JTA
Sunday, May 9, 2021
How to Adjust TXLevel Match your Repeater Radio #MMDVM
1, Use SDR# , RTL-SDR
2, Use SDR Uno , SDR Play
3, CMU200
Read the detail https://www.bi7jta.org/wiki/index.php?title=Main_Page#Adjust_TX_Level_with_SDR
Monday, May 3, 2021
Solved Problem MMDVM_Bridge DVSwitch "DMR, Master is closing down"
Error logs:
M: 2021-05-04 01:06:20.134 MMDVM_Bridge-20191105_V1.4.1 is running
E: 2021-05-04 01:06:30.243 DMR, Master is closing down
M: 2021-05-04 01:06:30.243 DMR, Closing DMR Network
Fix:
vi /etc/MMDVM_Bridge.ini
[General]
Callsign=BI7JTA
Id=4600***
Timeout=180
Duplex=1 #Change Duplex from 0 to 1
Monday, April 26, 2021
Product available for sell #Repeater board V3F4 with Cable #MMDVM
$59.00
https://www.bi7jta.org/cart/index.php?route=product/product&path=59_62&product_id=52
PayPal
Features:
Repeater and Simplex mode change anytime , through change the RX/TX board line order.
Support MMDVM mode DMR/YSF/P25/NXDN/DSTAR/POCSAG
More demo in Youtube page https://www.youtube.com/wintershuang
Product available for sell #Duplex Model_A : ALC_SPOT_NX
$175
Features:
Support MMDVM mode DMR/YSF/P25/NXDN/DSTAR/POCSAG
Double timeslot in DMR mode, act as a mini Digital voice repeater.
Support VHF/UFH, frequency range: 144MHz-148MHz, 420MHz-475MHz,842MHz-950MHz, Avoid satellite frequency: 145.8~146 MHz , 435~438.000 MHz
High-quality ECS TCXO, stable with low BER.
Saturday, April 17, 2021
Sunday, August 9, 2020
Monday, January 20, 2020
Monday, October 14, 2019
About DMR,DSTAR,P25, NXDN YSFReflector Digital Voice Transcoding Server, MMDVM, SVXLINK
How to create an XLX_XRF D-Star Reflector
https://sadigitalradio.com/digital-radio-how-tos/create-xlx-xrf-d-star-reflector/
How to Creating a YSFReflector
http://ks0lnk.net/?page_id=2968
How to build a Digital Voice Transcoding Server with AMBE
https://n5amd.com/digital-radio-how-tos/build-digital-voice-transcoding-server/?fbclid=IwAR2KoV7n7jHE8olO1c0Jv6xKRCS4UXOZSF3kH7tks8vfiKUjRRL1NtQuQc4
mmdvm_svxlink-1.pdf
https://www.do0tpb.de/app/download/20307140/mmdvm_svxlink-1.pdf
P25 NXDN Ref Dashboard
https://github.com/bi7jta/MMDVM-Install_RPT_N4IRS/tree/master/P25/P25Reflector-Dashboard
Other link
https://github.com/bi7jta/XLX_CN
Sunday, October 13, 2019
Adjust RX/TXOffset (BER) for MMDVM HAT #PI-STAR
Limit:
Just for MMDVM SIMPLEX HAT, DUPLEX HAT,
not for MMDVM Repeater HAT, adjust external radio frequency offset and RX/TXLevel instead.
Wednesday, October 9, 2019
OpenGD77,TYT-MD760 flash MMDVM firmware, work as MMDVM SIMPLEX hotspot
Sunday, September 29, 2019
J-STAR Users Guide : Allstarlink Setup
Preview .
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Update 2019-12-01, I continue update in my Wiki website https://www.bi7jta.org/wiki ,now have completed: for DR-1X for GM338-CDM1250-C...
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Important update ,from firmware v1.4.12 Frequency restrictions to avoid satellite interference. Please avoid the following ranges: 145....
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Important update ,from firmware v1.4.12 Frequency restrictions to avoid satellite interference. Please avoid the following ranges: 145.8-...