CM108b based Radio Interface Module in a raspberry Pi HAT format. Ideal to build an AllStar node based on [AllStarLink Raspberry PI images] (http://dvswitch.org/files/ASL_Images/Raspberry_Pi/Stretch/)

This is not a kit, but just the PCB with the CM108b Audio card. Buyers will need to procure parts based on their intended usage.

New stock boards are black.

The supported options are:

• SA818 VHF or UHF module with serial RX/TX directly to Raspberry PI GPIO RX/TX. Supports MiniCircuits Low Pass filters ( FV1206 case)
• Connector to interface with a radio like Yaesu FT7900 or TYT TH-9000D

Requires an USB breakout board to connect the CM108 to the USB port, or can be directly soldered to USB pads under the Raspberry PI (D+ & D- only).

Recommended parts :

• 490Mhz Low Pass Filter 139-LFCN-490 (Mouser) if using SA818 UHF
• 160Mhz Low Pass Filter 139-LFCN-160 (Mouser) if using SA818 VHF
• SMA connector like 471-SMACONNECTOR (Mouser)
• 2x20 pin connector for Raspberry pi GPIO
• JST PH 2 pin right angle through hole 474-PRT-09749 (Mouser) or cheaper
• JST PH pigtail https://www.amazon.com/gp/product/B07Q128X2V
• USB A Male breakout board https://www.amazon.com/gp/product/B07MQFJQLT
• 1x6 right angle pin header (if not using SA818)

There is an option to add a screw terminal to provide 5v to the Raspberry PI - But there is no protection, and is used at the buyer own risk.

For programming the SA818 - you can use 0x9900's python code available here :

https://github.com/0x9900/SA818

Full Documentation :

https://projects.w6ipa.com/documentation/pirim/

NOTE: Due to the weirdness of USPS - I have removed the Priority Mail options as it is not delivered faster. Also - at this point - no shipping outside the USA - sorry