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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/73Q22K3TYZS3DK3X2KPO2ML2U6OXH4NJ/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "54A00C0294AC4F5AB6B6B3EEE7C86E8D@AlPC", "message_id_hash": "73Q22K3TYZS3DK3X2KPO2ML2U6OXH4NJ", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/73Q22K3TYZS3DK3X2KPO2ML2U6OXH4NJ/", "sender": { "address": "tokens (a) myranch.com", "mailman_id": "5a60dd875fc042f0b65148831bedbef4", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/5a60dd875fc042f0b65148831bedbef4/emails/" }, "sender_name": "[email protected]", "subject": "[amsat-bb] Re: AMSAT-BB Digest, Vol 7, Issue 179", "date": "2012-06-04T21:44:45Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Just checked again and actually I have HI confirmed on 6 and I worked that \nZF before on 6, no QSL.\n\nKHP\n\n-----Original Message----- \nFrom: [email protected]\nSent: Monday, June 04, 2012 3:00 PM\nTo: [email protected]\nSubject: AMSAT-BB Digest, Vol 7, Issue 179\n\nSend AMSAT-BB mailing list submissions to\[email protected]\n\nTo subscribe or unsubscribe via the World Wide Web, visit\nhttp://amsat.org/mailman/listinfo/amsat-bb\nor, via email, send a message with subject or body 'help' to\[email protected]\n\nYou can reach the person managing the list at\[email protected]\n\nWhen replying, please edit your Subject line so it is more specific\nthan \"Re: Contents of AMSAT-BB digest...\"\n\n\nToday's Topics:\n\n 1. Re: Icom Power Cord (Clint Bradford)\n 2. A great suggestion (Thomas Doyle)\n 3. 1K grids (Bruce)\n 4. Re: full duplex w/ 2 HT's (Ronald Nutter)\n 5. Re: full duplex w/ 2 HT's (Greg D)\n 6. Re: A great suggestion (Clint Bradford)\n 7. Re: European Lunar Lander - Call for Declarations (Stefan Wagener)\n 8. Re: European Lunar Lander - Call for Declarations (i8cvs)\n 9. Re: European Lunar Lander - Call for Declarations\n (Jari Koivurinne)\n 10. Re: full duplex w/ 2 HT's (Andrew Glasbrenner)\n 11. nitinol wire vs steel tape (Nick Pugh)\n 12. Re: full duplex w/ 2 HT's (Dobarrows)\n 13. Re: [CubeSat] nitinol wire vs steel tape (chantal cappelletti)\n\n\n----------------------------------------------------------------------\n\nMessage: 1\nDate: Sun, 3 Jun 2012 12:57:42 -0700\nFrom: Clint Bradford <[email protected]>\nTo: [email protected]\nSubject: [amsat-bb] Re: Icom Power Cord\nMessage-ID: <[email protected]>\nContent-Type: text/plain; charset=us-ascii\n\nI believe the IC-910 also uses the IC-OPC-657A power cord - if that helps in \nyour searching.\n\nClint K6LCS\n\n>> ... IC-821 ...\n\n\n\n\n\n------------------------------\n\nMessage: 2\nDate: Sun, 3 Jun 2012 15:59:58 -0500\nFrom: Thomas Doyle <[email protected]>\nTo: [email protected]\nSubject: [amsat-bb] A great suggestion\nMessage-ID:\n<CAHnRQRKmTZgvrezjAEPOu=KW2QQmeD07=sAh_nE5+q+TbhANfQ@mail.gmail.com>\nContent-Type: text/plain; charset=ISO-8859-1\n\nA great suggestion was made for a simple addition to the\nprogram written for demos and education.\n\nYou can now add your own images to the little slide show that takes\nplace in the lower right hand portion of the screen. This is a good\nway to personalize your presentation by including images that\nare of specific interest to your group or add images that for one\nreason or another are not included in the program.\n\nIf any group or organization would like an image added to the gallery\nand/or included with the program distribution just send me your request\nin an email with the image attached and I will try to include it. If any\nregistered trademark or copyright issues are involved with the image\nsimply add a line or two to your request authorizing use of the image\nin this application.\n\nThe updated version of the program, information on how to add your\nown images and a little gallery of images to try out is on the\nweb site.\n\nhttp://www.tomdoyle.org/simplesatlookdown\n\nHave Fun - 73 W9KE Tom Doyle\n\n\n------------------------------\n\nMessage: 3\nDate: Sun, 3 Jun 2012 14:31:02 -0700 (PDT)\nFrom: Bruce <[email protected]>\nTo: [email protected]\nSubject: [amsat-bb] 1K grids\nMessage-ID:\n<[email protected]>\nContent-Type: text/plain; charset=us-ascii\n\nCongrats to Jerry, K5OE. He just submitted his VUCC upgrade to 1,000 grids \ntoday, actually 1,008 but who's counting.\n\nIt was an easy set of cards to check. About 30 from a bunch of hams and 100 \nor so grids from Yuri. Not a bad haul. and... I have never worked Yuri on \nsatellite.\n\n73...bruce\n\nSent from my iPhone\n\n------------------------------\n\nMessage: 4\nDate: Sun, 03 Jun 2012 16:17:07 -0500\nFrom: Ronald Nutter <[email protected]>\nTo: Robert Coppock <[email protected]>\nCc: [email protected]\nSubject: [amsat-bb] Re: full duplex w/ 2 HT's\nMessage-ID: <[email protected]>\nContent-Type: text/plain; charset=ISO-8859-1; format=flowed\n\nRobert:\n\nI have used a duplexer on the UHF side of my satellite ops for several\nyears. I find that some radios have more of a desense problem than\nothers. Here is a link to my website where I briefly talk about what I\ndo on portable ops and using what is referred to as a Mode J filter -\nhttp://www.ka4kyi.com/satellite_gear/misc_equipment/\n\nRon Nutter\nKA4KYI\nAMSAT Area Coordinator for Missouri\n\nOn 6/2/12 11:33 AM, Robert Coppock wrote:\n>\n>\n>\n> hola, i am trying to determine the best way to work full duplex on the \n> birds with 2 HT's or radios. i cannot find any info so far on the web. \n> my concern is to keep the transmit power out of the receive radio, i guess \n> basically the difference between a diplexer and duplexer. since i am \n> efficient (lazy) i thought i would just look for suggestions here while i \n> am checking google also. what do i need, di/du/ plexer, and what is the \n> correct wiring scheme ? i will be using the arrow antenna without the \n> built in duplexer, from the 2 feeds (vhf/uhf) and 2 HT's for now. my \n> picture of it so far, is to wire the vhf radio direct to the vhf feed port \n> on the arrow, and have the uhf port on the arrow come into a duplexer, \n> with the duplexer uhf port going to the uhf radio, and the duplexer vhf \n> port terminated into a 50 ohm dummy load. also, any suggestions of \n> specific duplexers would be appreciated. i think i started on this project \n> a few years ago, but never got around to get!\nti!\n> ng it all together. grazie mille, Robert k f 0 g cn81 in the \n> woodwork, literally, \n> shasta/klamath national forests.\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\n\n\n\n------------------------------\n\nMessage: 5\nDate: Sun, 03 Jun 2012 19:45:36 -0700\nFrom: Greg D <[email protected]>\nTo: [email protected]\nSubject: [amsat-bb] Re: full duplex w/ 2 HT's\nMessage-ID: <[email protected]>\nContent-Type: text/plain; charset=us-ascii; format=flowed\n\nSo, all the on-line information seems to point to this solution -\nputting a diplexer (filter) on the 70cm side to tap off and absorb the\nincoming 2m signal. Isn't there also a design where one puts a filter on\nthe 2m side, to tap off and absorb the 70 cm (3rd harmonic of 2m) signal?\n\nI would think that any (reasonable) 70cm receiver would have enough\nrejection for a signal so far out of band, but the in-band 3rd harmonic\ncan only be taken care of at its source. At least, I think that's the logic.\n\nIs there anything worthy about the other design, or is the most common\nproblem that our HTs can't possibly deal with a strong 2m signal on the\n70cm side because of their \"DC to Daylight\" receivers?\n\nI've been on the mode-J birds without much of a problem with this sort\nof desense, though I did have a lot of trouble on AO-40 with reflected\nRF when aiming through a big oak tree behind the house. The 70cm uplink\nwas interfering with the 13cm downlink, and I was pretty sure at the\ntime that it was a 3rd harmonic sort of problem.\n\nJust curious,\n\nGreg KO6TH\n\n\nRonald Nutter wrote:\n> Robert:\n>\n> I have used a duplexer on the UHF side of my satellite ops for several\n> years. I find that some radios have more of a desense problem than\n> others. Here is a link to my website where I briefly talk about what I\n> do on portable ops and using what is referred to as a Mode J filter -\n> http://www.ka4kyi.com/satellite_gear/misc_equipment/\n>\n> Ron Nutter\n> KA4KYI\n> AMSAT Area Coordinator for Missouri\n>\n> On 6/2/12 11:33 AM, Robert Coppock wrote:\n>>\n>>\n>>\n>> hola, i am trying to determine the best way to work full duplex on\n>> the birds with 2 HT's or radios. i cannot find any info so far on the\n>> web. my concern is to keep the transmit power out of the receive\n>> radio, i guess basically the difference between a diplexer and\n>> duplexer. since i am efficient (lazy) i thought i would just look for\n>> suggestions here while i am checking google also. what do i need,\n>> di/du/ plexer, and what is the correct wiring scheme ? i will be\n>> using the arrow antenna without the built in duplexer, from the 2\n>> feeds (vhf/uhf) and 2 HT's for now. my picture of it so far, is to\n>> wire the vhf radio direct to the vhf feed port on the arrow, and have\n>> the uhf port on the arrow come into a duplexer, with the duplexer uhf\n>> port going to the uhf radio, and the duplexer vhf port terminated\n>> into a 50 ohm dummy load. also, any suggestions of specific duplexers\n>> would be appreciated. i think i started on this project a few years\n>> ago, but never got around to get!\n> ti!\n>> ng it all together. grazie mille, Robert k f 0 g cn81 in the\n>> woodwork, literally, shasta/klamath national forests.\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\n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>> .\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\n> program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n\n------------------------------\n\nMessage: 6\nDate: Sun, 03 Jun 2012 20:27:33 -0700\nFrom: Clint Bradford <[email protected]>\nTo: AMSAT BB <[email protected]>\nSubject: [amsat-bb] Re: A great suggestion\nMessage-ID: <[email protected]>\nContent-Type: text/plain; CHARSET=US-ASCII\n\nBrilliant! Great program ... accurate tracking ... simple and elegant - \nGREAT work, Tom.\n\n\nClint Bradford K6LCS\nhttp://www.work-sat.com\n\n\n\n------------------------------\n\nMessage: 7\nDate: Mon, 4 Jun 2012 02:26:20 -0500\nFrom: Stefan Wagener <[email protected]>\nTo: i8cvs <[email protected]>\nCc: Amsat - BBs <[email protected]>\nSubject: [amsat-bb] Re: European Lunar Lander - Call for Declarations\nMessage-ID:\n<CAKu8kHCN5PQZmbDjYeqWnZcarjVi2g-qRiwueQ=uKYSt-pkPfw@mail.gmail.com>\nContent-Type: text/plain; charset=windows-1252\n\nThanks folks,\n\nThat's a very helpful and constructive discussion. It will certainly allow\nfor better assessment of the feasibility, options and limitations.\n\nStefan, VE4NSA\n\nOn Sat, Jun 2, 2012 at 8:54 PM, i8cvs <[email protected]> wrote:\n\n> Hi Peter, DB2OS\n>\n> I was reading the document in particular point 2.2.2\n> Communication and 2.2.3 but in my opinion the Radio\n> Hams are off side because everyting has been already\n> designed and in my opinion there is no room available\n> on the Lander for a Moon-Earth experimental communication\n> transponder in our L band and S band because our antennas\n> are too big.\n>\n> Since the main 7.2 and 8.5 GHz X band High Gain Antennas\n> of the Lander are oriented toward the Earth in a fixed position\n> to compensate the pointing for libration probably only a 5 watt\n> pep and a circularly polarized horn on our 10.5 GHz should be\n> possible.\n>\n> 73\" de\n>\n> i8CVS Domenico\n>\n> ----- Original Message -----\n> From: \"Peter Guelzow\" <[email protected]>\n> To: <[email protected]>\n> Sent: Sunday, June 03, 2012 12:57 AM\n> Subject: [amsat-bb] Re: European Lunar Lander - Call for Declarations\n>\n> Hi together,\n>\n> Please also have a look at this document:\n>\n>\n> http://wsn.spaceflight.esa.int/docs/lunarlander/LunarLander_EIDA_CDI_230512.\n> pdf\n>\n> in particular see point 2.2.2 Communication and 2.2.3:\n>\n> \"Visibility of the Earth from the landing site imposes the following\n> constraint:\n> ? communications shall only be possible within a 13.7 day (TBC) window\n> each month, and shall depend on the availability of the ground station.\"\n>\n> further:\n>\n> \"the mean power available for an individual payload is expected not to\n> exceed 20W\"\n>\n> 73s Peter DB2OS\n>\n> On 03.06.2012 00:29, Peter Guelzow wrote:\n>\n> > Check also this discussion from James Miller, G3RUH:\n> >\n> > http://www.amsat.org/amsat/articles/g3ruh/110.html\n> >\n> >\n> > 73s Peter, DB2OS\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\n\n------------------------------\n\nMessage: 8\nDate: Mon, 4 Jun 2012 10:01:14 +0200\nFrom: \"i8cvs\" <[email protected]>\nTo: \"Stefan Wagener\" <[email protected]>\nCc: Amsat - BBs <[email protected]>\nSubject: [amsat-bb] Re: European Lunar Lander - Call for Declarations\nMessage-ID: <000001cd4228$79df1300$0401a8c0@b3o7f1>\nContent-Type: text/plain; charset=\"Windows-1252\"\n\nHi Stefan VE4NSA, Peter DB2OS and folks on BB\n\nIt should be very nice to have a transponder on the Lunar Lander operating \ninto the X/K band 10,5 GHz Uplink and 24 GHz downlink. As on AO40 the \nantennas are very small and probably there is room for a transponder.\n\nFor a good feasibility and assesment with ESA it would be very important to \nhave also a 24 GHz Beacon relaying to us TLM data concerning some primary \nESA experiments.\n\nJust my idea.\n\n73\" de\n\ni8CVS Domenico\n ----- Original Message ----- \n From: Stefan Wagener\n To: i8cvs\n Cc: Peter Guelzow ; Amsat - BBs\n Sent: Monday, June 04, 2012 9:26 AM\n Subject: Re: [amsat-bb] Re: European Lunar Lander - Call for Declarations\n\n\n Thanks folks,\n\n\n That's a very helpful and constructive discussion. It will certainly allow \nfor better assessment of the feasibility, options and limitations.\n\n\n Stefan, VE4NSA\n\n\n On Sat, Jun 2, 2012 at 8:54 PM, i8cvs <[email protected]> wrote:\n\n Hi Peter, DB2OS\n\n I was reading the document in particular point 2.2.2\n Communication and 2.2.3 but in my opinion the Radio\n Hams are off side because everyting has been already\n designed and in my opinion there is no room available\n on the Lander for a Moon-Earth experimental communication\n transponder in our L band and S band because our antennas\n are too big.\n\n Since the main 7.2 and 8.5 GHz X band High Gain Antennas\n of the Lander are oriented toward the Earth in a fixed position\n to compensate the pointing for libration probably only a 5 watt\n pep and a circularly polarized horn on our 10.5 GHz should be\n possible.\n\n 73\" de\n\n i8CVS Domenico\n\n\n ----- Original Message -----\n From: \"Peter Guelzow\" <[email protected]>\n To: <[email protected]>\n Sent: Sunday, June 03, 2012 12:57 AM\n Subject: [amsat-bb] Re: European Lunar Lander - Call for Declarations\n\n\n Hi together,\n\n Please also have a look at this document:\n\n http://wsn.spaceflight.esa.int/docs/lunarlander/LunarLander_EIDA_CDI_230512.\n pdf\n\n in particular see point 2.2.2 Communication and 2.2.3:\n\n \"Visibility of the Earth from the landing site imposes the following\n constraint:\n ? communications shall only be possible within a 13.7 day (TBC) window\n each month, and shall depend on the availability of the ground station.\"\n\n further:\n\n \"the mean power available for an individual payload is expected not to\n exceed 20W\"\n\n 73s Peter DB2OS\n\n On 03.06.2012 00:29, Peter Guelzow wrote:\n\n > Check also this discussion from James Miller, G3RUH:\n >\n > http://www.amsat.org/amsat/articles/g3ruh/110.html\n >\n >\n > 73s Peter, DB2OS\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 \nprogram!\n Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n\n\n\n------------------------------\n\nMessage: 9\nDate: Mon, 4 Jun 2012 11:32:38 +0300\nFrom: \"Jari Koivurinne\" <[email protected]>\nTo: \"i8cvs\" <[email protected]>\nCc: Amsat - BBs <[email protected]>\nSubject: [amsat-bb] Re: European Lunar Lander - Call for Declarations\nMessage-ID:\n<[email protected]>\nContent-Type: text/plain;charset=iso-8859-1\n\nHi all\n\nThere is nothing much to do with 20W mean power. Just a 5W pep beacon...\n\n-jari oh3uw\n\n\n> Hi Stefan VE4NSA, Peter DB2OS and folks on BB\n>\n> It should be very nice to have a transponder on the Lunar Lander operating\n> into the X/K band 10,5 GHz Uplink and 24 GHz downlink. As on AO40 the \n> antennas\n> are very small and probably there is room for a transponder.\n>\n> For a good feasibility and assesment with ESA it would be very important \n> to\n> have also a 24 GHz Beacon relaying to us TLM data concerning some primary \n> ESA\n> experiments.\n>\n> Just my idea.\n>\n> 73\" de\n>\n> i8CVS Domenico\n>\n\n\n\n\n------------------------------\n\nMessage: 10\nDate: Mon, 4 Jun 2012 06:01:21 -0400\nFrom: Andrew Glasbrenner <[email protected]>\nTo: Greg D <[email protected]>\nCc: \"[email protected]\" <[email protected]>\nSubject: [amsat-bb] Re: full duplex w/ 2 HT's\nMessage-ID: <[email protected]>\nContent-Type: text/plain; charset=us-ascii\n\nUsually the diplexer as a filter is only needed to keep the 2m tx from \noverloading a 70cm preamp. For a two radio setup with no preamp, it usually \nisn't needed at all.\n\n73, Drew KO4MA\n\nSent from my iPhone\n\nOn Jun 3, 2012, at 10:45 PM, Greg D <[email protected]> wrote:\n\n> So, all the on-line information seems to point to this solution - putting \n> a diplexer (filter) on the 70cm side to tap off and absorb the incoming 2m \n> signal. Isn't there also a design where one puts a filter on the 2m side, \n> to tap off and absorb the 70 cm (3rd harmonic of 2m) signal?\n>\n> I would think that any (reasonable) 70cm receiver would have enough \n> rejection for a signal so far out of band, but the in-band 3rd harmonic \n> can only be taken care of at its source. At least, I think that's the \n> logic.\n>\n> Is there anything worthy about the other design, or is the most common \n> problem that our HTs can't possibly deal with a strong 2m signal on the \n> 70cm side because of their \"DC to Daylight\" receivers?\n>\n> I've been on the mode-J birds without much of a problem with this sort of \n> desense, though I did have a lot of trouble on AO-40 with reflected RF \n> when aiming through a big oak tree behind the house. The 70cm uplink was \n> interfering with the 13cm downlink, and I was pretty sure at the time that \n> it was a 3rd harmonic sort of problem.\n>\n> Just curious,\n>\n> Greg KO6TH\n>\n>\n> Ronald Nutter wrote:\n>> Robert:\n>>\n>> I have used a duplexer on the UHF side of my satellite ops for several \n>> years. I find that some radios have more of a desense problem than \n>> others. Here is a link to my website where I briefly talk about what I do \n>> on portable ops and using what is referred to as a Mode J filter - \n>> http://www.ka4kyi.com/satellite_gear/misc_equipment/\n>>\n>> Ron Nutter\n>> KA4KYI\n>> AMSAT Area Coordinator for Missouri\n>>\n>> On 6/2/12 11:33 AM, Robert Coppock wrote:\n>>>\n>>>\n>>>\n>>> hola, i am trying to determine the best way to work full duplex on the \n>>> birds with 2 HT's or radios. i cannot find any info so far on the web. \n>>> my concern is to keep the transmit power out of the receive radio, i \n>>> guess basically the difference between a diplexer and duplexer. since i \n>>> am efficient (lazy) i thought i would just look for suggestions here \n>>> while i am checking google also. what do i need, di/du/ plexer, and what \n>>> is the correct wiring scheme ? i will be using the arrow antenna without \n>>> the built in duplexer, from the 2 feeds (vhf/uhf) and 2 HT's for now. my \n>>> picture of it so far, is to wire the vhf radio direct to the vhf feed \n>>> port on the arrow, and have the uhf port on the arrow come into a \n>>> duplexer, with the duplexer uhf port going to the uhf radio, and the \n>>> duplexer vhf port terminated into a 50 ohm dummy load. also, any \n>>> suggestions of specific duplexers would be appreciated. i think i \n>>> started on this project a few years ago, but never got around to get!\n>> ti!\n>>> ng it all together. grazie mille, Robert k f 0 g cn81 in the woodwork, \n>>> literally, shasta/klamath national forests.\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 \n>>> program!\n>>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>> .\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 \n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\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\n------------------------------\n\nMessage: 11\nDate: Mon, 4 Jun 2012 05:47:29 -0500\nFrom: \"Nick Pugh\" <[email protected]>\nTo: <[email protected]>, <[email protected]>\nSubject: [amsat-bb] nitinol wire vs steel tape\nMessage-ID: <095b01cd423f$70bfe710$523fb530$@net>\nContent-Type: text/plain; charset=\"us-ascii\"\n\nDoes anyone on the list know if there is any trade off using nitinol wire\nover steel tape for antennas on cube sats?\n\n\n\n\n\n\n\nThanks\n\n\n\nnick\n\nOffice 337 593 8700\n\nCell 337 258 2527\n\n\n\nHelping UL become a world Class Engineering and Educational School\n\n\n\n\n\n\n\n------------------------------\n\nMessage: 12\nDate: Mon, 4 Jun 2012 11:53:01 -0400 (EDT)\nFrom: Dobarrows <[email protected]>\nTo: [email protected]\nSubject: [amsat-bb] Re: full duplex w/ 2 HT's\nMessage-ID: <[email protected]>\nContent-Type: text/plain; charset=\"us-ascii\"\n\nMy portable setup using an arrow antenna doesn't use a diplexor or duplexor.\n\nWith the setup for 2m uplink, I connect my VX5R to the two meter driven \nelement with a piece of RG-8X.\n\nI connect my Icom IC R10 to the 432 mhz driven element with another piece of \nRG-8X. Just turn the radios on,\nadjust the frequencies, and wave the antenna around until you hear the \nsatellite on the receive radio. When I transmit and I can hear my signal in \nthe IC-R10 I know that I may be heard. If I hear someone else in the \ndownlink, I stop transmitting and wait for another chance\n\nNow note that my IC R10 is not a second HT, but just a receiver. You should \nbe able to swap in a second HT for the IC R10 with no problem.\n\nMost of the time, I use a better setup by inserting a Down East Microwave \npreamp between the antenna and the IC R10. The preamp improves reception on \nthe downlink considerably. By using a receive only radio with the pre amp, \nI don't have to worry about accidently transmitting on 432 and burning up \nthe pre amp. I run the preamp with two six volt lantern batteries in \nseries.\n\nWhen working a pass, I start with the receiver in usb mode and tuned about \n10 mhz higher than the published downlink frequency. This helps me zero in \non the satellite. When the signal gets better (the squawking noise \nlistening to a FM signal with usb setting gets loud) I switch the receiver \nto FM and gradually tune down frequency to keep up with the doppler. I \nusually don't touch the transmit frequency on the VX 5R. I just keep it on \nthe published downlink frequency for the whole pass.\n\n73, W8IJ\n\n\n------------------------------\n\nMessage: 13\nDate: Mon, 4 Jun 2012 18:07:32 +0200\nFrom: chantal cappelletti <[email protected]>\nTo: Nick Pugh <[email protected]>\nCc: [email protected], [email protected]\nSubject: [amsat-bb] Re: [CubeSat] nitinol wire vs steel tape\nMessage-ID:\n<CAERGK4esKyX0nVSnQkectrUMc8WzGt5yM=bB+sEwws3yDZaicA@mail.gmail.com>\nContent-Type: text/plain; charset=ISO-8859-1\n\nDear Nick.\nwe have tried to use the Nitinol for our CubeSat but for our\nexperience it is better to use the steel tape.\nIf you want to have more details please contact us:\[email protected]\nThanks,\nChantal\n\n2012/6/4 Nick Pugh <[email protected]>:\n> Does anyone on the list know if there is any trade off using nitinol ?wire\n> over steel tape for antennas on cube sats?\n>\n>\n>\n>\n>\n>\n>\n> Thanks\n>\n>\n>\n> nick\n>\n> Office?? 337 593 8700\n>\n> Cell????? 337 258 2527\n>\n>\n>\n> Helping UL become a world Class Engineering ?and Educational School\n>\n>\n>\n>\n>\n>\n> _______________________________________________\n> CubeSat mailing list\n> [email protected]\n> http://lists.cubesat.org/mailman/listinfo/cubesat\n>\n\n\n\n-- \nChantal Cappelletti, PhD\nG.A.U.S.S. coordinator\nITALY : +39-0688346436\n? ? ? ? ? ? +393336200333 ?(cell)\n? ? ? ? ? ? G.A.U.S.S.- Gruppo di Astrodinamica\n? ? ? ? ? ? via Salaria 851,\n? ? ? ? ? ? 00138 ROMA\n\nUSA :?? 001-606-783-9597 (office)\n? ? ? ? ?? Space Science Center\n? ? ? ? ?? Morehead State University\n? ? ? ? ?? 200A Martindale Dr.\n? ? ? ? ?? Morehead, Kentucky 40351\n\n\n\n------------------------------\n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT member? Join now to support the amateur satellite program!\nhttp://amsat.org/mailman/listinfo/amsat-bb\n\n\nEnd of AMSAT-BB Digest, Vol 7, Issue 179\n**************************************** \n\n", "attachments": [] }