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GET /hyperkitty/api/list/[email protected]/email/V4U5AFU3MJVN7ZTI5GCKUEFZRVDLGGOG/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/V4U5AFU3MJVN7ZTI5GCKUEFZRVDLGGOG/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "CAGfY+e1AqdXbefS+dGMAj3rzAhADOAS31yO+zFaTyG7_+6qTtw@mail.gmail.com", "message_id_hash": "V4U5AFU3MJVN7ZTI5GCKUEFZRVDLGGOG", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/V4U5AFU3MJVN7ZTI5GCKUEFZRVDLGGOG/", "sender": { "address": "ea4gqs (a) gmail.com", "mailman_id": "871ced065b9046d2969cdfaaba12d778", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/871ced065b9046d2969cdfaaba12d778/emails/" }, "sender_name": "Felix Paez", "subject": "Re: [amsat-bb] Elk Antenna, Midland CT 890 and Full Duplex", "date": "2015-12-17T09:17:54Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Thanks Patrick and Dani,\n\nyeah It seems the classic desensing issue... I did not remember that. When\nI made the tests with the whip antenna I think it was U/V... I will try\nAO-85 and let you know.\nVery interesting the links to your messages about the handy tests Patrick,\n\nRegards,\n\nFelix EA4GQS\n\n2015-12-16 19:01 GMT+01:00 <[email protected]>:\n\n> Send AMSAT-BB mailing list submissions to\n> [email protected]\n>\n> To subscribe or unsubscribe via the World Wide Web, visit\n> http://www.amsat.org/mailman/listinfo/amsat-bb\n> or, via email, send a message with subject or body 'help' to\n> [email protected]\n>\n> You can reach the person managing the list at\n> [email protected]\n>\n> When replying, please edit your Subject line so it is more specific\n> than \"Re: Contents of AMSAT-BB digest...\"\n>\n>\n> Today's Topics:\n>\n> 1. Improve Orbital-decay predictions (Luc Leblanc)\n> 2. Special Membership Offer for Fox-1A launch expiring December\n> 31, 2015 (Andrew Glasbrenner)\n> 3. Re: Special Membership Offer for Fox-1A launch expiring\n> December 31, 2015 (J. Boyd (JR2TTS))\n> 4. Re: Help needed please (Aayush Yadav)\n> 5. Telemetry Signals Heard from from Athenoxat-1\n> (Mani [VU2WMY/KJ6LRS])\n> 6. Re: [amsatindia] Telemetry Signals Heard from from\n> Athenoxat-1 (Nitin Muttin)\n> 7. Elk Antenna, Midland CT 890 and Full Duplex (Felix Paez)\n> 8. Re: Elk Antenna, Midland CT 890 and Full Duplex\n> (Patrick STODDARD (WD9EWK/VA7EWK))\n> 9. Re: Elk Antenna, Midland CT 890 and Full Duplex (Dani EA4GPZ)\n> 10. SatPC32c Problem.......... (Carmen Peca)\n> 11. Re: AO-7 (Gustavo Nicolau)\n> 12. Re: SatPC32c Problem.......... (Burns Fisher)\n>\n>\n> ----------------------------------------------------------------------\n>\n> Message: 1\n> Date: Tue, 15 Dec 2015 16:32:55 -0500\n> From: Luc Leblanc <[email protected]>\n> To: [email protected]\n> Subject: [amsat-bb] Improve Orbital-decay predictions\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; CHARSET=US-ASCII\n>\n>\n>\n>\n>\n> http://www.nasa.gov/press-release/goddard/plunging-into-the-ionosphere-satellite-s-last-days-i\n> mprove-orbital-decay-predictions\n>\n>\n> Luc Leblanc VE2DWE\n>\n>\n>\n>\n>\n>\n>\n>\n>\n> ------------------------------\n>\n> Message: 2\n> Date: Tue, 15 Dec 2015 22:16:06 -0500\n> From: \"Andrew Glasbrenner\" <[email protected]>\n> To: \"'Andrew Glasbrenner'\" <[email protected]>,\n> \"'amsat-bb'\"\n> <[email protected]>\n> Subject: [amsat-bb] Special Membership Offer for Fox-1A launch\n> expiring December 31, 2015\n> Message-ID: <0cdd01d137b0$1a4fbc60$4eef3520$@com>\n> Content-Type: text/plain; charset=\"UTF-8\"\n>\n> We've welcomed dozens of new members since the AO-85 launch with our offer\n> of ?Getting Started With The Amateur Satellites? as a free PDF with\n> membership in AMSAT, but this offer will come to an end on December 31st,\n> 2015. Point your browser to\n> http://store.amsat.org/catalog/index.php?cPath=32 and help AMSAT keep\n> amateur radio in space, and get a free e-book as a thank you.\n>\n> 73, Drew KO4MA\n> AMSAT-VP Operations\n>\n> -----Original Message-----\n> From: AMSAT-BB [mailto:[email protected]] On Behalf Of Andrew\n> Glasbrenner\n> Sent: Thursday, October 01, 2015 2:44 PM\n> To: amsat-bb\n> Subject: [amsat-bb] Special Membership Offer for Fox-1A launch on October\n> 8, 2015\n>\n>\n>\n> >From http://www.amsat.org/?p=4591\n>\n> AMSAT?s Fox-1A is set to launch as part of the GRACE (Government Rideshare\n> Advanced Concepts Experiment) auxillary payload on the NROL-55 mission\n> October 8, 2015 from Vandenburg AFB on an Atlas V vehicle. More details\n> will be released when made available from our launch provider. NRO has\n> released this factsheet about the mission:\n> http://www.amsat.org/wordpress/wp-content/uploads/2015/10/GRACE_CubeSat_FactSheet.pdf\n>\n> General information on Fox-1A is available in the downloadable AMSAT Fox\n> Operating Guide\n> http://www.amsat.org/wordpress/wp-content/uploads/2015/05/FoxOperatingGuide_May2015_Hi.pdf\n>\n> FoxTelem software for decoding and submitting telemetry has been made\n> available for download at http://www.amsat.org/?page_id=4532 .\n>\n> As part of the preparations for the launch and activation of this new\n> satellite, AMSAT is making our ?Getting Started With The Amateur\n> Satellites? book available for a limited time as a download with any paid\n> new or renewal membership purchased via the AMSAT Store. This offer is only\n> available with purchases completed online, and for only a limited time. A\n> perennial favorite, Getting Started is updated every year with the latest\n> amateur satellite information, and is the premier primer of satellite\n> operation. The 132 page book is presented in PDF format, in full color, and\n> covers all aspects of making your first contacts on a ham radio satellite.\n>\n> Please take advantage of this offer today by visiting the AMSAT store (\n> http://store.amsat.org/catalog/) and selecting any membership option.\n> While there, check out our other items, including the M2 LEOpack antenna\n> system, AMSAT shirts, hats, and other swag. Thank you, and see you soon on\n> Fox-1A!\n>\n> 73, Drew KO4MA\n> AMSAT VP Operations\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available to\n> all interested persons worldwide without requiring membership. Opinions\n> expressed are solely those of the author, and do not reflect the official\n> views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n>\n>\n> ------------------------------\n>\n> Message: 3\n> Date: Wed, 16 Dec 2015 12:30:33 +0900\n> From: \"J. Boyd (JR2TTS)\" <[email protected]>\n> To: [email protected]\n> Subject: Re: [amsat-bb] Special Membership Offer for Fox-1A launch\n> expiring December 31, 2015\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=\"UTF-8\"\n>\n> On Tue, 15 Dec 2015 22:16:06 -0500, \"Andrew Glasbrenner\" <\n> [email protected]> wrote:\n>\n> > We've welcomed dozens of new members since the AO-85 launch with our\n> > offer of ?Getting Started With The Amateur Satellites? as a free PDF\n> > with membership in AMSAT, but this offer will come to an end on December\n> > 31st, 2015. Point your browser to\n> > http://store.amsat.org/catalog/index.php?cPath=32 and help AMSAT keep\n> > amateur radio in space, and get a free e-book as a thank you.\n>\n> And I am one of them! Became a member last weekend. Thanks to all in\n> AMSAT and on this board for the helpful information that comes in every\n> day.\n>\n> Now then, can I obtain my SATPC32 password now? It's been four days... :)\n>\n> --\n> J. Boyd, JR2TTS/NI3B\n> [email protected]\n> http://www.flickr.com/photos/the2belo/\n> http://www.qrz.com/db/JR2TTS\n> Twitter: @Minus2_C\n>\n>\n>\n> ------------------------------\n>\n> Message: 4\n> Date: Wed, 16 Dec 2015 16:55:37 +0530\n> From: Aayush Yadav <[email protected]>\n> To: \"[email protected]\" <[email protected]>\n> Subject: Re: [amsat-bb] Help needed please\n> Message-ID:\n> <CALRS4DzNr7eMdjMpTE=\n> [email protected]>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hello all,\n>\n> Currently we are planning to transmit 1 Watt signal from the satellite but\n> due to vswr losses, the transmitted power is around 100 mW. This is due to\n> the antenna's S11 loss being around -1 rather than -10. This is for the VHF\n> band for which we are using an antenna 17 cm long, thus such high loss. The\n> length can not be increased much and so is the case with the\n> electronics(power amplifier) as we are restricted by other constraints.\n> We would love to hear some of your suggestions so as to how can we still\n> increase the transmission power meeting all these requirements. And if not,\n> what can be done on the Ground-Station to improve the reception. Are there\n> satellites available which transmit such low power and still can be\n> received?\n> Any Help would be appreciated.\n>\n> Thanking you,\n> Aayush Yadav\n> Team Pratham.\n>\n> On Mon, Dec 7, 2015 at 9:01 AM, Nitin Muttin <[email protected]> wrote:\n>\n> > Hi Aayush,\n> >\n> > As discussed please consider the below points.\n> >\n> > 1. Fine tune your antennas in the satellite sub band on VHF and UHF. VHF\n> -\n> > 145.800Mhz - 146.000 Mhz. UHF 435-438 Mhz.\n> >\n> > 2. Replace the RG -58 Cable with Heliax or LMR 400 Cable.\n> >\n> > 3. Move the pre amp (LNA) to the mast closer to the antenna.\n> >\n> > 4. Refer http://www.dk3wn.info/satellites.shtml for the list of\n> > satellites , modes and frequencies.\n> >\n> > 5. For some satellites you can use sound card based software TNC like\n> > http://uz7.ho.ua/packetradio.htm for AX25.\n> >\n> > 73\n> > Nitin [VU3TYG]\n> >\n> > ------------------------------\n> > *From:* Aayush Yadav <[email protected]>\n> > *To:* Nitin Muttin <[email protected]>\n> > *Cc:* Mani VU2 WMY <[email protected]>; Somashekar S. <[email protected]>\n> > *Sent:* Saturday, 5 December 2015 2:27 PM\n> > *Subject:* Re: Help needed please\n> >\n> > Hello sir,\n> > As discussed over the phone, could you please provide me with the various\n> > satellites to track, information regarding softwares and the cables.\n> > Thank you sir,\n> >\n> > Yours sincerely,\n> > Aayush\n> > Team pratham\n> >\n> >\n> >\n> > On Tue, Dec 1, 2015 at 6:28 PM, Nitin Muttin <[email protected]> wrote:\n> >\n> > Hi Aayush,\n> >\n> > Sure, we can discuss on Saturday after 11AM. I can be reached on\n> > 9880018675.\n> >\n> > 73\n> > Nitin [VU3TYG]\n> >\n> > ------------------------------\n> > *From:* Aayush Yadav <[email protected]>\n> > *To:* Nitin Muttin <[email protected]>\n> > *Cc:* Mani VU2 WMY <[email protected]>; Somashekar S. <[email protected]>\n> > *Sent:* Tuesday, 1 December 2015 3:40 PM\n> >\n> > *Subject:* Re: [amsat-bb] Help needed please\n> >\n> > Hi Nitin,\n> > I was wondering if you were free this week, we would really appreciate\n> the\n> > help.\n> >\n> > Thanking you,\n> >\n> > Regards,\n> > Aayush Yadav\n> > Team Pratham.\n> >\n> >\n> >\n> > On Tue, Nov 24, 2015 at 9:10 PM, Nitin Muttin <[email protected]>\n> wrote:\n> >\n> > Sure Aayush we can discuss this next week over a phone call. This week we\n> > have a tight schedule to the HAMFEST 2015 in Rajkot.\n> >\n> > 73\n> > Nitin [VU3TYG]\n> > Secretary, AMSAT INDIA\n> > www.amsatindia.org\n> >\n> > ------------------------------\n> > *From:* Aayush Yadav <[email protected]>\n> > *To:* Nitin Muttin <[email protected]>\n> > *Sent:* Tuesday, 24 November 2015 7:37 PM\n> >\n> > *Subject:* Re: [amsat-bb] Help needed please\n> >\n> > Hello Nitin,\n> >\n> > We would love to have your help on the same. If you have any advice on\n> how\n> > we should continue our work we really welcome the suggestions. Thanks a\n> lot\n> > for your reply.\n> > If you could help us in improving our sensitivity, as currently we get\n> > around -110 dbm noise at the antenna but as per our calculations the\n> power\n> > of the signal we need to recieve would be of an order of -150 dbm.\n> >\n> > 73\n> > Aayush Yadav.\n> > Team Pratham.\n> >\n> >\n> >\n> > On Tue, Nov 24, 2015 at 11:40 AM, Nitin Muttin <[email protected]>\n> wrote:\n> >\n> > Thanks Burns for the pointers.\n> >\n> > @Aayush, I can help you with information so that you are able to\n> > successfully receive and decode telemetry.\n> >\n> > 73\n> > Nitin [VU3TYG]\n> >\n> > ------------------------------\n> > *From:* Burns Fisher <[email protected]>\n> > *To:* Aayush Yadav <[email protected]>\n> > *Cc:* \"[email protected]\" <[email protected]>\n> > *Sent:* Tuesday, 24 November 2015 1:28 AM\n> > *Subject:* Re: [amsat-bb] Help needed please\n> >\n> > Hello Aayush,\n> >\n> > Starting out with very strong signals is probably a good idea even though\n> > you can probably get any satellite\n> > that you wish with a good ground station. Start out with AO-85 for FM\n> > reception and AO-73 for SSB\n> > reception. AO-73 is especially strong during local day time during\n> > Mon-Friday (UTC). There is not\n> > transponder turned on then, so all the power goes into the telemetry.\n> >\n> > Both of these can be received with an HT (handheld with a simple antenna)\n> > so you are very likely to receive\n> > them on any station you have and optimize from there.\n> >\n> > I would also suggest that you might find local colleagues in AMSAT-India\n> > who would be able to tell you\n> > things of local interest (what parts are available where, for example).\n> >\n> > 73,\n> >\n> > Burns W2BFJ\n> >\n> > On Mon, Nov 23, 2015 at 2:16 PM, Aayush Yadav <[email protected]>\n> > wrote:\n> >\n> > > Hello all,\n> > >\n> > > As a part of a student satellite project from India, I have a few\n> > questions\n> > > regarding how can i improve my reception of data on the ground station.\n> > We\n> > > have a TS2000 and have designed a few yagi antennas for uhf and vhf\n> > band. I\n> > > would like to know some satellites on which we can practice receiving\n> any\n> > > signal. We are totally new to this system and have practiced some\n> failed\n> > > attempts of the same. Further, we would really appreciate If anyone\n> could\n> > > help on how we can increase our reception power. Any other help or\n> advice\n> > > would also be appreciated. Thank you.\n> > >\n> > > Aayush Yadav,\n> > > Team Pratham,\n> > > IIT Bombay.\n> > > _______________________________________________\n> > > Sent via [email protected]. AMSAT-NA makes this open forum available\n> > > to all interested persons worldwide without requiring membership.\n> > Opinions\n> > > expressed\n> > > are solely those of the author, and do not reflect the official views\n> of\n> > > AMSAT-NA.\n> > > Not an AMSAT-NA member? Join now to support the amateur satellite\n> > program!\n> > > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> >\n> >\n> >\n> > >\n> > _______________________________________________\n> > Sent via [email protected]. AMSAT-NA makes this open forum available\n> > to all interested persons worldwide without requiring membership.\n> Opinions\n> > expressed\n> > are solely those of the author, and do not reflect the official views of\n> > AMSAT-NA.\n> > Not an AMSAT-NA member? Join now to support the amateur satellite\n> program!\n> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n> >\n>\n>\n> ------------------------------\n>\n> Message: 5\n> Date: Wed, 16 Dec 2015 19:54:25 +0530\n> From: \"Mani [VU2WMY/KJ6LRS]\" <[email protected]>\n> To: \"BB, AMSAT\" <[email protected]>, [email protected],\n> VUHAMS <[email protected]>, [email protected]\n> Cc: [email protected]\n> Subject: [amsat-bb] Telemetry Signals Heard from from Athenoxat-1\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes\n>\n> Hello All,\n>\n> Heard strong CW telemetry signals from just launched Athenoxat-1on 437.485\n> Mhz at 14:09 UTC during its first 22 degrees southern pass over Bangalore,\n> India.\n>\n> But, couldn't decode as it was too fast.\n>\n> Good wishes and greetings from all of us here in India for an early and\n> successful commissioning of all the six satellites from Singapore.\n>\n> 73 de\n> Mani [VU2WMY/KJ6LRS]\n> Secretary & Station-In-Charge\n> Upagrah Amateur Radio Club VU2URC\n> ISRO Satellite Centre\n> HAL Airport Road, Bangalore-560 017.\n> Phone:(Office)91-80-25082598/25082054/25082192\n> Mobile:? 91-9880 341 456\n> E-mail ID: [email protected]\n> ? ? ? ? ? [email protected]\n> ? ? ? ? ? [email protected]\n>\n> ------------------------------------------------------------------------------\n> Confidentiality Notice: This e-mail message, including any attachments, is\n> for\n> the sole use of the intended recipient(s) and may contain confidential and\n> privileged information. Any unauthorized review, use, disclosure or\n> distribution is prohibited. If you are not the intended recipient, please\n> contact the sender by reply e-mail and destroy all copies of the original\n> message.\n>\n> ------------------------------------------------------------------------------\n>\n>\n>\n> ------------------------------\n>\n> Message: 6\n> Date: Wed, 16 Dec 2015 14:35:38 +0000 (UTC)\n> From: Nitin Muttin <[email protected]>\n> To: \"[email protected]\" <[email protected]>, \"BB,\n> AMSAT\" <[email protected]>, VUHAMS <[email protected]>,\n> \"[email protected]\" <[email protected]>\n> Cc: \"[email protected]\" <[email protected]>\n> Subject: Re: [amsat-bb] [amsatindia] Telemetry Signals Heard from from\n> Athenoxat-1\n> Message-ID:\n> <[email protected]>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Congrats Mani, I could not hear any signals will try next pass?73\n> Nitin [VU3TYG]\n>\n> From: \"'Mani [VU2WMY/KJ6LRS]' [email protected] [amsatindia]\" <\n> [email protected]>\n> To: \"BB, AMSAT\" <[email protected]>; [email protected]; VUHAMS\n> <[email protected]>; [email protected]\n> Cc: [email protected]\n> Sent: Wednesday, 16 December 2015 7:54 PM\n> Subject: [amsatindia] Telemetry Signals Heard from from Athenoxat-1\n>\n> ? Hello All,\n>\n> Heard strong CW telemetry signals from just launched Athenoxat-1on 437.485\n> Mhz at 14:09 UTC during its first 22 degrees southern pass over Bangalore,\n> India.\n>\n> But, couldn't decode as it was too fast.\n>\n> Good wishes and greetings from all of us here in India for an early and\n> successful commissioning of all the six satellites from Singapore.\n>\n> 73 deMani [VU2WMY/KJ6LRS]\n> Secretary & Station-In-Charge\n> Upagrah Amateur Radio Club VU2URC\n> ISRO Satellite Centre\n> HAL Airport Road, Bangalore-560 017.\n> Phone:(Office)91-80-25082598/25082054/25082192\n> Mobile:? 91-9880 341 456\n> E-mail ID: [email protected]\n> ? ? ? ? ? [email protected]\n> ? ? ? ? ? [email protected]\n> Confidentiality Notice: This e-mail message, including any attachments, is\n> for the sole use of the intended recipient(s) and may contain confidential\n> and privileged information. Any unauthorized review, use, disclosure or\n> distribution is prohibited. If you are not the intended recipient, please\n> contact the sender by reply e-mail and destroy all copies of the original\n> message.\n> __._,_.___ Posted by: \"Mani [VU2WMY/KJ6LRS]\" <[email protected]>\n> | Reply via web post | ? | Reply to sender | ? | Reply to group\n> | ? | Start a New Topic | ? | Messages in this topic (1) |\n>\n> Visit Your Group\n> - New Members 1\n> ? Privacy ? Unsubscribe ? Terms of Use\n>\n>\n> .\n> __,_._,___#yiv1601860811 #yiv1601860811 -- #yiv1601860811ygrp-mkp\n> {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0\n> 10px;}#yiv1601860811 #yiv1601860811ygrp-mkp hr {border:1px solid\n> #d8d8d8;}#yiv1601860811 #yiv1601860811ygrp-mkp #yiv1601860811hd\n> {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px\n> 0;}#yiv1601860811 #yiv1601860811ygrp-mkp #yiv1601860811ads\n> {margin-bottom:10px;}#yiv1601860811 #yiv1601860811ygrp-mkp .yiv1601860811ad\n> {padding:0 0;}#yiv1601860811 #yiv1601860811ygrp-mkp .yiv1601860811ad p\n> {margin:0;}#yiv1601860811 #yiv1601860811ygrp-mkp .yiv1601860811ad a\n> {color:#0000ff;text-decoration:none;}#yiv1601860811\n> #yiv1601860811ygrp-sponsor #yiv1601860811ygrp-lc\n> {font-family:Arial;}#yiv1601860811 #yiv1601860811ygrp-sponsor\n> #yiv1601860811ygrp-lc #yiv1601860811hd {margin:10px\n> 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv1601860811\n> #yiv1601860811ygrp-sponsor 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#yiv1601860811reco-head {color:#ff7900;font-weight:700;}#yiv1601860811\n> #yiv1601860811ygrp-reco {margin-bottom:20px;padding:0px;}#yiv1601860811\n> #yiv1601860811ygrp-sponsor #yiv1601860811ov li a\n> {font-size:130%;text-decoration:none;}#yiv1601860811\n> #yiv1601860811ygrp-sponsor #yiv160186\n> 0811ov li {font-size:77%;list-style-type:square;padding:6px\n> 0;}#yiv1601860811 #yiv1601860811ygrp-sponsor #yiv1601860811ov ul\n> {margin:0;padding:0 0 0 8px;}#yiv1601860811 #yiv1601860811ygrp-text\n> {font-family:Georgia;}#yiv1601860811 #yiv1601860811ygrp-text p {margin:0 0\n> 1em 0;}#yiv1601860811 #yiv1601860811ygrp-text tt\n> {font-size:120%;}#yiv1601860811 #yiv1601860811ygrp-vital ul li:last-child\n> {border-right:none !important;}#yiv1601860811\n>\n>\n>\n>\n> ------------------------------\n>\n> Message: 7\n> Date: Wed, 16 Dec 2015 17:59:36 +0100\n> From: Felix Paez <[email protected]>\n> To: [email protected]\n> Subject: [amsat-bb] Elk Antenna, Midland CT 890 and Full Duplex\n> Message-ID:\n> <\n> CAGfY+e0JsnHWGn62Tvsac2kRSAX0zb0n9cuF6Lt33PgvBqmRFQ@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hi all,\n>\n>\n>\n> First of all, thanks for your patience. Still learning!\n>\n>\n>\n> Well, until few days ago I have been able to do many contacts throught\n> SO-50 using my Baofeng UV-5R and Elk antenna in half duplex.\n>\n>\n>\n> I wanted to go next step and try Full Duplex so I bought a Midland CT 890\n> Full Duplex handy (129 eur).\n>\n>\n>\n> I can tell that the Midland receiver seems much better than the Baofeng\n> one. I have been able to work (still half duplex) even when the satellite\n> was a few degrees over the horizon. The Baofeng seems much deaf than the\n> Midland, but this my subjective experience. The measured sensitivities I\n> got from a review are: 0.179 uV (12 dB SINAD) in VHF and 0.205 uv (12 dB\n> SINAD) in UHF but I don?t have the Baofeng values. If somebody has them It\n> would be nice if you share so we can compare.\n>\n>\n>\n> I have checked that the Full Duplex mode works by transmiting with it and\n> at the same time receiving a signal from the Baofeng UV-5R but all this\n> using the whip antenna that comes with the Midland.\n>\n>\n>\n> The problem comes when I connect the Elk antenna to it. If I press the PTT\n> the receiver noise goes to maximum. I tried to make a contact with the\n> SO-50 but I could not hear anything when I pressed the PTT. All was noise.\n> I had to disable the Full Duplex and then I was able to make some nice\n> contacts (EA1JM, CU2ZG?) in half duplex.\n>\n>\n> So my questions are?\n>\n> 1. Is it possible to use a single Log Periodic antenna (only one feed\n> point) as the Elk to work Full Duplex or two antennas are needed?\n>\n> 2. In case that it is possible? Would this improve by using separate\n> receiver and transmitter with a filter that gives a feed point for VHF and\n> another one for UHF? (the Elk antenna only has a feed point)\n>\n> I have to make more tests but at first time, It does not seem possible to\n> use the Midland CT 890 (and maybe other full duplex handys?) with the Elk\n> antenna in Full Duplex?\n>\n>\n>\n> Thanks. Any comments are always welcome\n>\n>\n>\n> Felix EA4GQS\n>\n>\n> ------------------------------\n>\n> Message: 8\n> Date: Wed, 16 Dec 2015 10:19:38 -0700\n> From: \"Patrick STODDARD (WD9EWK/VA7EWK)\" <[email protected]>\n> To: \"[email protected]\" <[email protected]>\n> Subject: Re: [amsat-bb] Elk Antenna, Midland CT 890 and Full Duplex\n> Message-ID:\n> <\n> CAN6TEUfDxADq1yoHw3AEGaD+2FA5SQkQksya8XYmtz_6n0cn+Q@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hola, Felix!\n>\n> Your Midland CT-890 is very similar to the Wouxun KG-UV8D HT,\n> which has been on sale in much of the world for the past year\n> and a half. I have not seen the CT-890 here, but I'll offer\n> some answers to your questions based on the thought that these\n> radios are very similar, if not the same, but sold with different\n> model numbers...\n>\n> 1. Yes, you can use a log periodic antenna to work satellites\n> full-duplex using your CT-890, but not SO-50. The HT's 70cm\n> receiver is desensed when you transmit on 2m, and this happens\n> when using other antennas as well. You may be able to work\n> the new AO-85 satellite full-duplex with this HT, as you\n> would transmit to AO-85 on 70cm instead of 2m, and avoid\n> the internal desense issues you experienced when transmitting\n> to SO-50 on 2m. This is a common issue with a few of the\n> Chinese-made dual-band HTs that are advertised as having\n> full-duplex capabilities.\n>\n> 2. A separate receiver and transmitter for SO-50 should let\n> you work SO-50 full-duplex. You could use the Baofeng HT as\n> your transmit radio, and use the better receiver in your\n> CT-890 to hear the satellite downlink. This should also work\n> for LilacSat-2 (2m uplink, 70cm downlink) and AO-85 - but\n> you may be able to work AO-85 full-duplex with just your\n> CT-890.\n>\n> I had written about my experiences using my KG-UV8D to work\n> AO-85 full-duplex in a couple of posts to this list in\n> October and November:\n>\n> http://amsat.org/pipermail/amsat-bb/2015-October/055462.html\n> http://amsat.org/pipermail/amsat-bb/2015-November/056254.html\n>\n> You can also read about my tests with a few other HTs with\n> AO-85 from another AMSAT-BB post I made early this month:\n>\n> http://amsat.org/pipermail/amsat-bb/2015-December/056269.html\n>\n> You may find these posts useful, as you work with your new\n> CT-890.\n>\n> Buena suerte, y 73!!\n>\n>\n>\n>\n> Patrick WD9EWK/VA7EWK\n> http://www.wd9ewk.net/\n> Twitter: @WD9EWK\n>\n>\n>\n> On Wed, Dec 16, 2015 at 9:59 AM, Felix Paez <[email protected]> wrote:\n>\n> > Hi all,\n> >\n> >\n> >\n> > First of all, thanks for your patience. Still learning!\n> >\n> >\n> >\n> > Well, until few days ago I have been able to do many contacts throught\n> > SO-50 using my Baofeng UV-5R and Elk antenna in half duplex.\n> >\n> >\n> >\n> > I wanted to go next step and try Full Duplex so I bought a Midland CT 890\n> > Full Duplex handy (129 eur).\n> >\n> ?\n> ?<snip>?\n>\n>\n>\n> > So my questions are?\n> >\n> > 1. Is it possible to use a single Log Periodic antenna (only one feed\n> > point) as the Elk to work Full Duplex or two antennas are needed?\n> >\n> > 2. In case that it is possible? Would this improve by using separate\n> > receiver and transmitter with a filter that gives a feed point for VHF\n> and\n> > another one for UHF? (the Elk antenna only has a feed point)\n> >\n> > I have to make more tests but at first time, It does not seem possible to\n> > use the Midland CT 890 (and maybe other full duplex handys?) with the Elk\n> > antenna in Full Duplex?\n> >\n> >\n> >\n>\n>\n> ------------------------------\n>\n> Message: 9\n> Date: Wed, 16 Dec 2015 17:21:12 +0000\n> From: Dani EA4GPZ <[email protected]>\n> To: \"[email protected]\" <[email protected]>\n> Subject: Re: [amsat-bb] Elk Antenna, Midland CT 890 and Full Duplex\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=utf-8\n>\n> El 16/12/15 a las 16:59, Felix Paez escribi?:\n>\n> > The problem comes when I connect the Elk antenna to it. If I press the\n> PTT\n> > the receiver noise goes to maximum. I tried to make a contact with the\n> > SO-50 but I could not hear anything when I pressed the PTT. All was\n> noise.\n> > I had to disable the Full Duplex and then I was able to make some nice\n> > contacts (EA1JM, CU2ZG?) in half duplex.\n>\n> Hi Felix,\n>\n> Probably you are experiencing desensing on the receiver caused by the\n> transmit signal. This is much worse when working V/U because the 3rd\n> harmonic of the TX signal lies on the 70cm band. Patrick WD9EWK has made\n> many tests with different inexpensive Chinese full-duplex radios and it\n> seems that most of them are fine to work AO-85 (which is U/V) but it's\n> impossible to work SO-50 with any of them. Perhaps you could have more\n> luck with AO-85.\n>\n> >\n> > So my questions are?\n> >\n> > 1. Is it possible to use a single Log Periodic antenna (only one feed\n> > point) as the Elk to work Full Duplex or two antennas are needed?\n>\n> Yes. It's technically possible, although, as I said, desense can be an\n> issue. I think that it's worse with the elk than with, say the arrow\n> (which is two crossed yagis) because the coupling between the TX and RX\n> is much greater on the elk than on the arrow.\n>\n> > 2. In case that it is possible? Would this improve by using separate\n> > receiver and transmitter with a filter that gives a feed point for VHF\n> and\n> > another one for UHF? (the Elk antenna only has a feed point)\n>\n> If you have a 2m/70cm duplexer, you can try using two radios. Perhaps a\n> cheap Baofeng for TX and the Midland (which is more sensitive) for RX.\n> This will probably be much better than just using the Midland\n> full-duplex, because the external duplexer will provide better isolation\n> than the one on the Midland.\n>\n> > I have to make more tests but at first time, It does not seem possible to\n> > use the Midland CT 890 (and maybe other full duplex handys?) with the Elk\n> > antenna in Full Duplex?\n>\n> It seems that it's difficult to get a handheld that can do V/U\n> full-duplex. However, U/V is much easier.\n>\n> 73,\n>\n> Dani M0HXM/EA4GPZ.\n>\n>\n>\n> ------------------------------\n>\n> Message: 10\n> Date: Wed, 16 Dec 2015 12:44:04 -0500\n> From: \"Carmen Peca\" <[email protected]>\n> To: <[email protected]>\n> Subject: [amsat-bb] SatPC32c Problem..........\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=\"us-ascii\"\n>\n> Hi All, I was wondering if anyone has had any problem with SatPC32c and CAT\n> control. I have been running SatPC32b with the 910H and everything worked\n> perfectly. I upgraded to version \"C\" and the LVB rotor control works fine\n> but I cannot get the CAT working. I made sure everything worked Ok with Ham\n> Radio Deluxe, and it worked flawlessly changed frequencies and mode with no\n> problems using the same com port. If anyone can point me in the right\n> direction to correct this, it would be greatly appreciated.\n>\n> Thanks,73\n> Carm,WO3T\n>\n>\n>\n> ------------------------------\n>\n> Message: 11\n> Date: Wed, 16 Dec 2015 15:46:41 -0200\n> From: Gustavo Nicolau <[email protected]>\n> To: [email protected]\n> Subject: Re: [amsat-bb] AO-7\n> Message-ID:\n> <CAGHu4f9aOUWSJmrND03t0AyEAT5_+6+x6eUCWZ=\n> [email protected]>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hi all. Today i'm qrv in AO7. 73 de PT9BM. Gustavo Nicolau. GH40\n>\n> 2015-12-12 13:56 GMT-02:00 Gustavo Nicolau <[email protected]>:\n>\n> > > Hello to all, gud condictions today via AO7. I'm QRV.\n> > >\n> > > 73 de PT9BM.\n> >\n>\n>\n> ------------------------------\n>\n> Message: 12\n> Date: Wed, 16 Dec 2015 13:01:09 -0500\n> From: Burns Fisher <[email protected]>\n> To: Carmen Peca <[email protected]>\n> Cc: AMSAT BB <[email protected]>\n> Subject: Re: [amsat-bb] SatPC32c Problem..........\n> Message-ID:\n> <CABX7KxU8pcMFGVqPK+fdZE-z+cTn_0dFtqtUxM=\n> [email protected]>\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hi Carmen,\n>\n> I'm having trouble with my TS-2000 as well, but I have not used it for a\n> while (and have not really tried to debug it very much). However, check\n> the release notes on SatPC32c. When I was scanning around, I found that it\n> said to change a couple check boxes for some radios. It did not solve my\n> TS-2000 problem, but I don't remember if the 910H was also one that\n> required a change.\n>\n> 73,\n>\n> Burns W2BFJ\n>\n> On Wed, Dec 16, 2015 at 12:44 PM, Carmen Peca <[email protected]>\n> wrote:\n>\n> > Hi All, I was wondering if anyone has had any problem with SatPC32c and\n> CAT\n> > control. I have been running SatPC32b with the 910H and everything worked\n> > perfectly. I upgraded to version \"C\" and the LVB rotor control works fine\n> > but I cannot get the CAT working. I made sure everything worked Ok with\n> Ham\n> > Radio Deluxe, and it worked flawlessly changed frequencies and mode with\n> no\n> > problems using the same com port. If anyone can point me in the right\n> > direction to correct this, it would be greatly appreciated.\n> >\n> > Thanks,73\n> > Carm,WO3T\n> >\n> > _______________________________________________\n> > Sent via [email protected]. AMSAT-NA makes this open forum available\n> > to all interested persons worldwide without requiring membership.\n> Opinions\n> > expressed\n> > are solely those of the author, and do not reflect the official views of\n> > AMSAT-NA.\n> > Not an AMSAT-NA member? Join now to support the amateur satellite\n> program!\n> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> >\n>\n>\n> ------------------------------\n>\n> Subject: Digest Footer\n>\n> _______________________________________________\n> Sent via [email protected].\n> AMSAT-NA makes this open forum available to all interested persons\n> worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Not an AMSAT member? Join now to support the amateur satellite program!\n> http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n> ------------------------------\n>\n> End of AMSAT-BB Digest, Vol 10, Issue 385\n> *****************************************\n>\n", "attachments": [] }