September 2008 - AMSAT-BB - mailman.amsat.org

AO-51 L/U mode SSB/FM
by Luc Leblanc 22 Sep '08

22 Sep '08

HI Couple of pass with nobody but a lot of stations out of the passband. Just hear VE3NPC in the morning pass and a K3 station swishing on the evening pass and me calling in the void!. The downlink audio is very very low i have to set the volume near the maximum to be able to hear something. Don't use automatic doppler for the uplink as you will have to "clarify" the voice. It is not a killer mode... but it help to see how your L band apparatus is working. I don't know why the audio is so low? Any explanations are welcome If any one got a recording i will be glad to hear it. I will try to record something tomorrow morning if i can get up early to start the wood stove as they forecast a minimum of -2 overnight. Autumn is really on the 21st of september here!!! "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Re: FOR SALE ICOM IC-W32A
by Stuart Underwood 22 Sep '08

22 Sep '08

The W32A has been sold. Thanks to all that had interests. 73, Stuart W8STU I have for sale a mint W32A.. It looks like it just came from the store. That's how nice of shape it is in. This is a 2m/70cm HT. Comes with radio, stock antenna, wal-wart, manual, HT case, and box. Pix on request. I am asking $225.00 shipped. Paypal or postal money order. If interested please call 440-639-9547 anytime after 3:00 PM EST or email w8stu(a)arrl.net Thanks in advance. 73, Stuart W8STU _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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Re: Duplexer for Sats
by Pughkeithd＠cs.com 22 Sep '08

22 Sep '08

In a message dated 9/22/2008 10:41:01 AM Central Daylight Time, satkins(a)inetdesign.org writes: > Subj: [amsat-bb] Duplexer for Sats > Date:9/22/2008 10:41:01 AM Central Daylight Time > From:[email protected] > To:[email protected] > Received from Internet: > > > > Hello everyone. I've worked AO-51 a few times so I'm not a total > newbie. Just joined the list here to ask about building my own duplexer > for working the sats. Awhile ago I found a page that described how to > build one using a pencil to wind the inductors. It was a really small > duplexer using RG-174 and SMC connectors. Does anyone know where I > might find this web page? Or have instructions for building a duplexer? > > Thanks > -- > Stephen Atkins > VE6CPU > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > Stephen, Check this out: http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf A duplexer is built as part of the antenna combination, but could be done separately if necessary. Any 50 ohm coax and connectors could be used. This one does feature inductors wound on a pencil. 73 - Keith, W5IU

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Re: Polarity questions
by Clint Bradford 22 Sep '08

22 Sep '08

>>...20-dB, assuming the signal is pure circular polarization...linear, then -3 dB...difference between RHCP and LHCP is 20 dB...difference between Horizontal and Vertical Linear is 20 dB...difference between (RHCP or LHCP) and (Horizontal or Vertical) is 3 dB...the VHF/UHF Manual handbook says 20 -30dB...in the real world, expect around 20~25dB loss from being completely cross- polarized...Between linear and circular, expect about 3dB loss... Ahh, thank goodness for the engineers... Just know that to get started working the FM satellites, you do not need to spend much to make successful contacts...Working AO-51 from Southern California (which some claim is not a "real world") at a Watt or so with an HT and Arrow Antenna is a breeze, and the polarization of the Yagi makes no difference in quality of TX/RX signal. And as you refine your satellite comms requirements, you can spend more money! Clint Bradford, K6LCS 909-241-7666

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Duplexer for Sats
by Stephen Atkins 22 Sep '08

22 Sep '08

Hello everyone. I've worked AO-51 a few times so I'm not a total newbie. Just joined the list here to ask about building my own duplexer for working the sats. Awhile ago I found a page that described how to build one using a pencil to wind the inductors. It was a really small duplexer using RG-174 and SMC connectors. Does anyone know where I might find this web page? Or have instructions for building a duplexer? Thanks -- Stephen Atkins VE6CPU

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Opening up a U110 rotator motor?
by Doug Faunt N6TQS +1-510-655-8604 22 Sep '08

22 Sep '08

Does anyone have information on this? Has it been discussed on AMSAT-BB or in the Journal at any time? If you done it (and put it back together) any hints would be appreciated. 73, doug

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Re: helix feed for sale
by Edward Cole 22 Sep '08

22 Sep '08

Hey, Bob, Does RCA know you stold their mascot? I suppose the dog is not part of the offer? Nice looking antenna! 73, Ed - KL7UW At 10:44 PM 9/21/2008, w7lrd(a)comcast.net wrote: >Hello >I have an extra helix feed available on Ebay. >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=110291240601&ssPage… >73 Bob W7LRD >_______________________________________________ >Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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helix feed for sale
by w7lrd＠comcast.net 22 Sep '08

22 Sep '08

Hello I have an extra helix feed available on Ebay. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=110291240601&ssPage… 73 Bob W7LRD

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FOR SALE ICOM IC-W32A
by Stuart Underwood 21 Sep '08

21 Sep '08

I have for sale a mint W32A.. It looks like it just came from the store. That's how nice of shape it is in. This is a 2m/70cm HT. Comes with radio, stock antenna, wal-wart, manual, HT case, and box. Pix on request. I am asking $225.00 shipped. Paypal or postal money order. If interested please call 440-639-9547 anytime after 3:00 PM EST or email w8stu(a)arrl.net Thanks in advance. 73, Stuart W8STU

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Re: First impression
by Clint Bradford 21 Sep '08

21 Sep '08

>>..I too am frustrated by the almost complete abscense of any thing related to AMSAT or the satellites coming out of QST.... We have no one to blame but ourselves if WE miss the opportunity to submit articles to QST. They would WELCOME well-written articles on the topic. Clint Bradford, K6LCS -------------------------------------- Clint Bradford, K6LCS / KAF3359 909-241-7666 - cell

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