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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KYMWZW2RWOKCHBPN2KHKMWP3INTRH275/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "KYMWZW2RWOKCHBPN2KHKMWP3INTRH275",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/7QNFOKCXOUE4OXP5G4NFVGEC226X43ZT/",
    "sender": {
        "address": "maccody (a) att.net",
        "mailman_id": "b6473a44d40d4c91b7f8bb74bef3b879",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/b6473a44d40d4c91b7f8bb74bef3b879/emails/"
    },
    "sender_name": "Mac A. Cody",
    "subject": "Re: [amsat-bb] Re-purpose Cable Modems, headed to dumpsters ?",
    "date": "2020-10-10T16:36:57Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7QNFOKCXOUE4OXP5G4NFVGEC226X43ZT/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/PVYPGTJSRR3YX6WOBP5XDCXN2HJQ2HY7/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Greg,\n\nInteresting concept.  Thanks for the post!\n\nI scanned through the various sources and I cannot find which cable modem or\nfirmware version is being used.  I also looked through the companion Github\nhttps://github.com/stdw/bcm3383-reverse-engineering\nwithout gaining any insight.\n\nLooking at the OpenWrt webpage you referenced, the only cable modem \nmentioned\nthat specifically uses the BCM3383 is the Technicolor TC7200. There are\nprobably others, though.\n\nI hope that more development occurs.\n\n73\n\nMac / AE5PH\n\nOn 10/10/20 6:35 AM, Gregory Beat via AMSAT-BB wrote:\n> Amateur Radio has a history of re-purposing Radio & Electronics surplus, for a variety of uses (receiving, transmitting, accessories, etc.).\n>\n> Recent posting on Github the past two weeks\n> https://github.com/stdw/cm-sdr\n>\n> “cm-sdr” is a piece of software to turn a Broadcom BCM3383-based cable modem into a general purpose Software Defined Radio (SDR)\n>\n> In its current state, cm-sdr serves as a proof of concept. It can currently stream I/Q data to a peer via TCP. A script to demodulate and play FM radio broadcasts is also provided.\n>\n> cm-sdr is dependent on many functions and memory mapped registers in the unmodified firmware. Thus, at the moment it is highly tailored to one specific cable modem model and firmware version.\n>\n> ==\n>\n> Earlier work by OpenWrt with the Broadcom’s BCM33xx chipset.\n> https://openwrt.org/docs/techref/hardware/soc/soc.broadcom.bcm33xx\n>\n> The BCM3383 DOCSIS 3.0 cable gateway System on a Chip (SoC) combines Broadcom's Full-Band Capture (FBC), dual-band concurrent Wi-Fi and a custom applications processor.\n> https://www.broadcom.com/products/broadband/cable/modems/bcm3383\n> Current Broadcom cable modem SoC offerings\n> https://www.broadcom.com/products/broadband/cable/modems\n>\n> ==\n> greg, w9gb\n>\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb\n\n\n",
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}