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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4P7VM52DNQNDA3YIWAG5JYO672SDCO2Z/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "4P7VM52DNQNDA3YIWAG5JYO672SDCO2Z",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/4P7VM52DNQNDA3YIWAG5JYO672SDCO2Z/?format=api",
    "sender": {
        "address": "tom.k3io (a) gmail.com",
        "mailman_id": "a3cf919d50e34818957525c30686cb1e",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/a3cf919d50e34818957525c30686cb1e/emails/?format=api"
    },
    "sender_name": "Tom Clark, K3IO",
    "subject": "[eagle]  2M High Efficiency PA",
    "date": "2007-07-15T02:59:18Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "In case you missed it, the following EAGLE item appears in today's AMSAT\nNEWS SERVICE (ANS) bulletins:\n\n> SB SAT @ AMSAT $ANS-196.04\n> High Efficiency RF Linear Amplifier Design Proposed for Eagle\n>\n> AMSAT News Service Bulletin 196.04\n> >From AMSAT HQ SILVER SPRING, MD.\n> July 15, 2007\n> To All RADIO AMATEURS\n> BID: $ANS-196.04\n>\n> AMSAT members Allen Katz, K2UYH and Marc Franco, N2UO have\n> designed a VHF, high-efficiency, class-E, RF power amplifier\n> with a DC to RF efficiency of 86.8%.  Their innovative \n> design is based on silicon carbide (SiC) metal-semiconductor \n> field effect transistors, or MESFETs.\n>\n> The design was presented in a paper at the IEEE International \n> Microwave Symposium in Hawaii.  It is now available on-line:\n> http://www.cree.com/products/wireless_docs.htm titled\n> \"Class-E Silicon Carbide VHF Power Amplifier\" (June 5, 2007)\n>\n> The final amplifier efficiency was measured at around 86 to 88%\n> with this number holding quite well at almost any drain voltage \n> or output power. This type of amplifier is under consideration\n> for the envelope elimination and restoration linear amplifier\n> planned for the AMSAT Eagle satellite.\n>\n> [ANS thanks Marc, N2UO for the above information]\n>\n> /EX\n>   \nMarc has promised to have a presentation with more details on this work\nfor the October AGM in Pittsburgh.\n\n(BTW -- Marc & Patty are expecting their first 2nd harmonic)\n",
    "attachments": []
}