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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3DUSEPSA4DXPUHRXPE2IEXH4IQ3BXGY5/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "3DUSEPSA4DXPUHRXPE2IEXH4IQ3BXGY5",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/D2SHA7WJAIRVODYBTP5GLMVGFY32GAMK/?format=api",
    "sender": {
        "address": "ko6th_greg (a) hotmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Greg D.",
    "subject": "[amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ",
    "date": "2009-05-16T21:31:45Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/OA2AEIM6B6TQAT6P2S3XFK7FVK5B7JIF/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\nHi Roger,\n\nThe Pringles Can antennas are linearly polarized along the line of the \"probe\" stuck in at the bottom.  It's actually a 1/4 wave feed.  \n\nYears ago I took a 7 turn helix and a co-worker's Pringles can out to the courtyard at work, aiming back into the building just to see how vulnerable a building's Wi-Fi signal is.  The helix clearly out performed the Pringles, and I found that the Pringles was very susceptible to how it was rotated (as expected).  But, \"vertical\" wasn't quite where I expected it.  Rather it was some 15 or 20 degrees off.  I have no idea if the Access Point was mounted at an angle, or if it was some other effect.\n\nAnd, yes, I could clearly receive the network traffic.\n\nGreg  KO6TH\n\n\n> From: [email protected]\n> To: [email protected]\n> Date: Sat, 16 May 2009 17:27:25 -0400\n> Subject: [amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ\n> \n> Not that they were optimum tuned for the 2.5 GHz frequency but what polarity\n> were the \"Pringles Can\" washer antennas that were so popular for\n> Net-Stumbling a few years ago?\n> \n> Roger\n> WA1KAT\n> ----- Original Message -----\n> From: \"Greg D.\" <[email protected]>\n> To: <[email protected]>; <[email protected]>\n> Sent: Saturday, May 16, 2009 2:33 PM\n> Subject: [amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ\n> \n> \n> \n> Hi Luc,\n> \n> \n> >\n> > Conclusion don't jump too fast on some hamfest deal as what's good for\n> WiFI is not always so good at 2.4ghz!\n> >\n> \n> This was probably just a typo; if so, pardon the reply...\n> \n> \n> \n> Wi-Fi and Wi-Max are different things.  An antenna designed for Wi-Max\n> may not operate very well, as you describe, on 2.4 ghz.  Wi-Fi's\n> 802.11b/g is on 2.4 ghz (channel 1 is right on top of our allocation),\n> so a properly designed Wi-Fi antenna could be good for 13cm Ham\n> applications.\n> \n> >\n> > P.S. I can use the antenna on 2.4ghz and i got fairly\n> good signal from AO-51 when he's in S mode but i cannot get rid out of\n> the fades.\n> > Could be i found why?\n> >\n> \n> Pretty much every Wi-Fi antenna I've ever seen is linearly polarized.  The\n> \"diversity\" antennas are two separate antennas, usually one vertical and one\n> horizontal, with separate cables going to two radios.  Going circular would\n> seem to be a no-brain improvement for the Wi-Fi crowd, but I think I've only\n> seen one vendor do it.\n> \n> Enjoy the new toy,\n> \n> Greg  KO6TH\n> \n> \n> _________________________________________________________________\n> Hotmail® has ever-growing storage! Don’t worry about storage limits.\n> http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutoria\n> l_Storage1_052009\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_________________________________________________________________\nHotmail® has a new way to see what's up with your friends.\nhttp://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tutorial_WhatsNew1_052009",
    "attachments": []
}