AD831 High Frequency Transducer RF Mixer Module 500MHz Bandwidth Mixing Down Mixing Dual Balanced Mixer Single Chip Radio Frequency Converter -10dBm
The AD831 is a low distortion, wide dynamic range, single chip mixer, suitable for HF and VHF Receiver RF-IF frequency, second mixer in DMR base station, DC-baseband conversion, quadrature modulation and demodulation, and ultrasound imaging, frequency move detection and other applications.
The AD831 has provide +24 dBm third-order intermodulation intercept point, realization of -10 dBm LO power, without the need for a high power LO drive.
There is no corresponding shielding and isolation problems, therefore, compared with the passive mixer to improve the performance of the system, reduce the system cost.
The mixer is designed as a single power supply, RF, IF and LO ports with DC isolation capacitor, easy to use.
The amplifier has low DC offset characteristics, so it can be used in DC-baseband frequency conversion and quadrature amplitude demodulation.
AURSINC MMDVM Hotspot USB HAT Board for Simplex & Dual Band Hotspot & Modem RPT Hat Support DMR DSTAR BlueDV | Compatible with Windows Linux Android System | BER, DMR, TX & TCXO offset | MicroUSB Port
Compatible with Raspberary Pi: Connect MMDVM hotspot USB hat to raspberry pi usb port and run pistar, select modem-USB to setup.
Wide Compatibility: AURSINC Hotspot radio board supports mmdvm_hs hat,mmdvm_hs dual hat and mmdvm modem rpt hat(oled display is not compatible for now).
Support Bluedv: USB Hat board supports bluedv windows, bluedv-android, bluedv-ios, bluedv-linux DSTAR | DSTAR,DMR,Fusion(YSF, FCS)(only DN mode).
Muliti Functions: MMDVM Board supports mmdvmhost/mmdvmcal on linux/windows to test the mmdvm hat BER/DMR/TX check TCXO offset | BER XX%.
MMDVM_HS Firmware: The mmdvm-hs hat supports the updated mmdvm_hs firmware running: linux: sudo stm32flash -v -w xxx.bin /dev/ttyAMA0 | windows: sudo stm32flash -v -w xxx.bin /dev/comx | com serial driver is ch340x.
Hima MMDVM Hotspot Spot Radio Station+ Antenna + OLED with Screen Support P25 DMR YSF D-Star UHF Expansion Board WiFi Digital Voice Modem Suitable for Raspberry Pi-Zero W, Pi 3, Pi 3B+
The kit includes: high performance with screen ARM processor, SMA antenna connector, including antenna, 2 pins, 4 screws..
Support:D-STAR, P25, DMR and work with UHF.Software:Pi-Star,Suit for Raspberry Pi 3,Raspberry PI-Zero w, Raspberry Pi 3b+.The 40pin raspberry pie needs to insulate the middle 20pin pin headers for normal use..
Power supply: USB cable connected to your computer or laptop. The Hotspot will also work mobile in your vehicle if you Tether it to your mobile phone network..
Basic Setup: 433.550000MHZ DMR (Need the 2.4GHz SSID as the Pi W doesn't support 5.8GHz)..
Note: All designs will be contributed on MMDVM open source project.If you encounter a different version of pi zero not work, please see the picture instructions. If you have any difficult， please contact us to help you solve the problem..
Radioddity GD-73A DMR/Analog Two Way Radio 2 Watts UHF Handheld Ham Radio for Beginners with Dual Time Slot, 3600mAh Battery, USB Rechargeable & Programming, Compact Long Range Walkie Talkie
【Mini Size DMR】Compatible with MOTOTRBO, the GD-73A features lightweight and mini size that can easily fit your pocket. The clear LCD screen and compact keypad achieve a simple but effective one-hand radio operation, perfect for both business use and hams..
【3600mAh Battery & Custom Keys】3600mAh large capacity battery supports 48 hours of standby time and up to 12 hours of continuous working time. You can assign 4 different functions (from a total of 21) to 2 customized keys to suit your needs..
【Micro USB Connectivity & Hotspot Use】Comes with a micro-USB cable for both charging and programming. It is ideal for daily use and for use in combination with your personal hotspot..
【In-depth User Guide】DMR requires a certain learning curve but with the very detailed user manual Radioddity provides, you can find it very easy to get a hold of this radio. Latest CPS & firmware is available from radioddity..
【Updated Software & Firmware Support】Newest Firmware and software for new functions and bugs fixing can be free downloaded from radioddity. 18 months warranty and 60-day no-reason return guaranteed..
Retevis RT3S DMR Radio, Dual Band Radio, Digital 2 Way Radio, Dual Time Slot 2000mAh Dual Band Scanning SMS Emergency Alarm, Long Range Handheld Walkie Talkie for Camping Traveling(1 Pack)
LCD screen and numeric keypad can be operated quickly.
2000mAh large capacity rechargeable battery supports 16 hours of standby and working time.
compatible with digital and analog modes.
includes dual band 3,000 channels multiple digital talk groups.
quickly switch working modes to adapt to different usage environments.
2m and 70cm frequency bands can be used in urban or suburban areas.
different frequency bands can be selected for use.
long distance calls such as camping and hiking are available.
easy to use interface and digital buttons.
allow you to operate without any trouble.
manual operation to quickly adjust function and frequency.
support SMS function and can write, receive and send information.
realize two groups of calls at the same time at one frequency point to improve communication efficiency.
