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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MQIVXUNX7BTVTA3GOSVO7YUT554FFDBQ/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "MQIVXUNX7BTVTA3GOSVO7YUT554FFDBQ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/TZXTIBVHBEKLPASBTUI54KFTQWMOQNRY/?format=api",
    "sender": {
        "address": "ve9qrp (a) gmail.com",
        "mailman_id": "4d6061838db34aba9a1c4722addebfaf",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4d6061838db34aba9a1c4722addebfaf/emails/?format=api"
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: mode s converter",
    "date": "2008-01-20T21:09:37Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TZXTIBVHBEKLPASBTUI54KFTQWMOQNRY/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VTXTMHTL4SXIKBWIK3QZ54MLLSPIJS35/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "It's been a while since I've had my s-band equipment working, but as I\nremember, an access point makes what appears to be an increase in the\nnoise level on a SSB/CW radio. (My linksys wifi router provides the\nsame service on all bands!) The nice thing about a signal generator is\nthat you have a single tone that you can hear with certainty, take\ns-meter readings of, etc. When I had my downconverter and patch\nantenna on my mast, I used to turn on the signal generator and point\nthe array at my shack, where I was holding the signal generator, as a\nway of ensuring that everything was working.\n\nDiane points out that calculating the frequency can be difficult. This\nis true, but if you have an all-band radio, you can listen to the\nharmonic of a 40 MHz can which should be up around 440 MHz. The error\nwill be multiplied 11 times, and you can use that to get a pretty good\nidea of where the signal generator should appear in the s-band.\n\n73, Bruce\nVE9QRP\n\nOn Jan 20, 2008 4:24 PM, Stefano Simonetti <[email protected]> wrote:\n>\n> Thanks for the answers,\n>\n> I have here a 50MHz block, I will try, thank you, I already saw those\n> projects at the ao40 days...Now finally I will make the circuit.\n>\n> I was also wondering if a wifi access point beacon would do the work.\n>\n> ISM band starts at 2400 and channel 1 is from 2401 to 2423 with the center\n> of 2412.\n>\n> I tried but heard nothing, I don't know if there should be RF around\n> 2401-2402  from an access point beacon tuned on channel 1.\n>\n> What do you think about?\n>\n> 73 - Steve - IW1RDZ\n>\n> ----- Messaggio originale -----\n> Da: Diane Bruce <[email protected]>\n> A: Bruce Robertson <[email protected]>\n> Cc: Stefano Simonetti <[email protected]>; AMSAT BB <[email protected]>\n> Inviato: Domenica 20 gennaio 2008, 20:29:32\n> Oggetto: Re: [amsat-bb] Re: mode s converter\n>\n>\n>\n> On Sun, Jan 20, 2008 at 02:03:57PM -0400, Bruce Robertson wrote:\n> > On Jan 20, 2008 12:44 PM, Stefano Simonetti <[email protected]> wrote:\n> > > Hi to all, I would like to test my \"old\" AO40 13cm converter\n> (2400-2402MHz) to see if it is still alive...\n> > >\n> ...\n> >\n> > If you need a cheap-and-dirty signal source, try using one of those\n> > small, canned RF oscillators at 40 MHz. Properly powered with a 5v\n>\n> http://www.db.net/~db/gen_2400.pdf\n>\n> > voltage regulator and a 9v battery, it will produce a harmonic signal\n> > that you'll hear well from right next to the downconverter, and, with\n>\n> It works a treat. There is a design using a filter\n> here: http://www.g4dmf.co.uk/2400/2400.html I've not gotten around\n> to building it.\n>\n> > a gain antenna, from some distance away. Don't worry about building it\n> > an antenna. If you're not sure if what you're hearing is the sig gen.\n> > or a birdie, just blow on the sig gen, and its frequency will warp!\n>\n> The problem with the xtal module is which harmonic are you listening to?\n> It's good enough for tweaking your converter and making sure things work,\n> but it's not going to reliable to use as a frequency standard. ;-)\n>\n> >\n> > At $2, it was all I used to hack and tweak my downconverter. I got\n> > this idea from a VE2 ham's webpages, but I can't seem to google them\n> > up right now.\n>\n> I took one off an old 386sx board; Just about any old\n> xtal module will multiply up into 2.4.\n>\n> - 73 Diane VA3DB\n> --\n> - [email protected] [email protected] http://www.db.net/~db\n>\n>\n>\n>  ________________________________\n> L'email della prossima generazione? Puoi averla con la Nuova Yahoo! Mail\n",
    "attachments": []
}