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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SNJH6W6TF76G44VKHTWYC7EX7LMGIMMM/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "005201c9e9d4$10bb78f0$6701a8c0@sysoffice",
    "message_id_hash": "SNJH6W6TF76G44VKHTWYC7EX7LMGIMMM",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ZTB5LN6FAVXPSPYLBDWQ2LW5CCYPRSTA/?format=api",
    "sender": {
        "address": "hkowall (a) shaw.ca",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Howard Kowall",
    "subject": "[amsat-bb] Re: Another satellite-receiver option",
    "date": "2009-06-10T14:02:17Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/S6X4LSB4YJEUNM6RH4IB2NFICSGJMLNF/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Good Morning\nI was able to download the manual from the manufacture site\nnot a very good manual,but it does not seem it is full duplex\nthe manual can be downloaded here\nhttp://www.wouxun.com/down_01.asp\n\nThanks Again\nHoward\nVE4ISP\n----- Original Message ----- \nFrom: \"Art McBride\" <[email protected]>\nTo: \"'Luc Leblanc'\" <[email protected]>; <[email protected]>\nSent: Wednesday, June 10, 2009 12:32 AM\nSubject: [amsat-bb] Re: Another satellite-receiver option\n\n\n> Luc,\n> When using a preamp in any metropolitan area a band pass filter is needed.\n> Helicoil types are very good for VHF. DCS makes them or build one out of \n> the\n> RSGB Book.\n> QFH antennas can be made 1/4 turn to 1 turn, 1/4 wave to 1 wave all with\n> different patterns. If done right they are a very effective antenna.\n>\n> NOAA Tiros N satellites run 5 watts on 137 MHz. On 70 cm AO-51 is 1/2 W \n> and\n> you lose 9 dB more for the increase in frequency. You have 3dB less \n> galactic\n> noise on 70 cm, and another 3 dB for reduced bandwidth 37 KHz to 16 KHz.\n> Doing the math you are comparing 5 watts of (NOAA-18) to .250 effective\n> watts on AO-51 adjusted for noise power and frequency. A huge difference!\n>\n> Art,\n> KC6UQH\n>\n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On\n> Behalf Of Luc Leblanc\n> Sent: Tuesday, June 09, 2009 8:43 AM\n> To: [email protected]\n> Subject: [amsat-bb] Re: Another satellite-receiver option\n>\n>\n> I try also  to receive NOAA APT transmission with an helix but i got very\n> marginal results even with a preamp for 137khz. The signal was\n> better but the pagers QRM was also boosted by about a factor of 5...\n>\n> The only one viable solution was to use my VHF satellite beam with a PAR\n> electronics vhf notch filter part number 5602516. Of course you\n> should have a 50khz band pass below that results are also very marginal. I\n> don't know if the PCR-100 is able to received at this bandwidth\n> but the PCR-1000 can and it can be driven by WXtoimg software.\n>\n>\n> P.S. My home made helix is available for 35$ plus shipping but a bit hard \n> to\n> securely fit inside a shipping box. pics available if needed.\n>\n> On 8 Jun 2009 at 23:14, Jerry Clement wrote:\n>\n>> I use a Hamtronics R139 Weather fax Receiver with a QFH antenna that I\n> built for receving and decoding images from the weather birds such as NOAA\n> 18. I never had any luck with any of my other receivers such as my Icom \n> R20,\n> being to narrow for this purpose,  although I know of guy's who have\n> modified receivers successfully for just this purpose. My set up may be \n> seen\n> on my website: www.stormchaser.cjb.net  click on: Quadrifilar Helix \n> Antenna.\n> The page needs to be upgraded, as I use a newer laptop than the one shown.\n>>\n>> Jerry VE6AB\n>> www.ve6ab.blogspot.com\n>> _______________________________________________\n>\n>\n>\n> \"-\"\n>\n>\n> Luc Leblanc VE2DWE\n> Skype VE2DWE\n> www.qsl.net/ve2dwe\n> WAC BASIC CW PHONE SATELLITE\n>\n>\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> __________ Information from ESET NOD32 Antivirus, version of virus \n> signature\n> database 4142 (20090609) __________\n>\n> The message was checked by ESET NOD32 Antivirus.\n>\n> http://www.eset.com\n>\n>\n>\n>\n> __________ Information from ESET NOD32 Antivirus, version of virus \n> signature\n> database 4142 (20090609) __________\n>\n> The message was checked by ESET NOD32 Antivirus.\n>\n> http://www.eset.com\n>\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",
    "attachments": []
}