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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/L3A5Q66N72SOIBWNTLPFDHJYBAO5F6MO/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "L3A5Q66N72SOIBWNTLPFDHJYBAO5F6MO",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/3LYOLQB2YZP7JTNGJBVKKNB3UL5MRCAE/?format=api",
    "sender": {
        "address": "gary_mayfield (a) hotmail.com",
        "mailman_id": "fe442cdc520e4857a9168b9182091295",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/fe442cdc520e4857a9168b9182091295/emails/?format=api"
    },
    "sender_name": "Gary \"Joe\" Mayfield",
    "subject": "[amsat-bb] Re: 2 Meter TV Interference",
    "date": "2011-12-08T02:47:39Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/B7L64ORAI5U4YABAZK3ZDVTOUJDOPCID/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I have one still on RF channel 3 (KDLO).  West of me is one on RF channel 2\n(KOTA).  \n\n73,\nJoe kk0sd\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Charles Suprin\nSent: Wednesday, December 07, 2011 3:49 PM\nTo: Bob Bruninga\nCc: [email protected]; Gordon JC Pearce\nSubject: [amsat-bb] Re: 2 Meter TV Interference\n\nI didn't think there were any vhf stations left. All the numbers on the\nchannels now are virtual. All the tv antenna plans are for uhf bands. A\nquick look in the Boston market and the lowest channel is 19, channel\n2@500MHz. Are there places that still use vhf?\n\nCharles\nOn Dec 7, 2011 1:38 PM, \"Bob Bruninga\" <[email protected]> wrote:\n\n> HPF above 500 MHz?  Then the TV would not be able to see anything but a\nfew\n> UHF channels.\n>\n> What is needed is a stub filter.  Just a piece of open ended coax 13\" long\n> \"T\"ed into the antenna lead....\n>\n> The 13\" is about 66% of a quarter wave at 2 meters.\n>\n> Done\n>\n> Bob, WB4APR\n>\n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On\n> Behalf Of Gordon JC Pearce\n> Sent: Wednesday, December 07, 2011 3:02 AM\n> To: [email protected]\n> Subject: [amsat-bb] Re: 2 Meter TV Interference\n>\n> On Tue, 6 Dec 2011 21:17:55 -0600\n> Wyatt Dirks <[email protected]> wrote:\n>\n>\n> > Just recently I have been having troubles with a neighbor while I am\n> working the FM satellites(SO-50 and AO-27). The setup I am currently using\n> is my mobile setup because I am unable to put a base station up for many\n> reasons. I am using a FT8900 with 50 watts out into a 1/4 wave or 1/2\n> Larson\n> mobile antenna.The 1/4 wave is mounted permanently via a hole in the roof\n> of\n> my truck an the 1/2 wave is mounted on a mount opposite the factory\n> installed FM/AM radio whip. It doesn't seem to matter what antenna I use\n> for\n> the problem to occur. Then I use either the arrow antenna or my cju for\nthe\n> downlink.\n>\n> Use 5W into a hand-held Yagi.  You'll get far better results.\n>\n>\n> > Today I had another local ham over at the request of the neighbor and\nhis\n> mobile Kenwood radio did the same thing to the neighbors tv when he\n> transmitted on 2 meter with 50 watts out. He also recommended that they\nget\n> a filter. I did not see the specs on the filter nor do I know what\n> bandwidth\n> it was for.\n>\n> What you want is a highpass filter that will lop off everything below\n> 500MHz.  The chances are that your TX output is clean enough but the\nlittle\n> amplifier in the splitter for the TV is causing all sorts of intermod -\nand\n> probably covers from broadcast VHF radio to the top of the TV band.\n>\n> --\n> Gordon JC Pearce MM0YEQ <[email protected]>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}