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

Visable Iss pass
by Rick Elverum 21 Mar '08

21 Mar '08

I saw the ISS pass from North west to South east this morning about 6:00 am local At 2 miles high and with a snowy winter I have missed any possibility of viewing it with the old eyes. Today was different. It was a beautiful site and so bright- traveling very fast about a 85 degree pass. Rick de KB0VBZ --------------------------------- Never miss a thing. Make Yahoo your homepage.

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Replacement KLM 2M-14C matching harness coax?
by i8cvs 20 Mar '08

20 Mar '08

Hi Tom, N9RPQ All messages with the requested pictures sent to you via your email address bounced back to me. Do you have another email address ? 73" de i8CVS Domenico ----- Original Message ----- From: Paul Gabel To: i8cvs Sent: Wednesday, March 19, 2008 9:20 PM Subject: Re: [amsat-bb] Fw: Replacement KLM 2M-14C matching harness coax? i8CVS Domenico I have the same antenna please send me the pics showing the info thanks Tom N9RPQ 73 i8cvs <domenico.i8cvs(a)tin.it> wrote: ----- Original Message ----- From: "Ken Swaggart" To: "AMSAT-BB" Sent: Wednesday, March 19, 2008 12:49 AM Subject: [amsat-bb] Replacement KLM 2M-14C matching harness coax? > It's time to rebuild my Oscar 10 vintage KLM 2M-14C matching harness. There > are no markings on the original harness but it has teflon insulation and I > assume it is 75 Ohm. Anyone have the replacement info? I'd prefer to use > teflon cable. The antenna manual doesn't describe the matching harness. > > Tnx, > Ken, W7KKE > Hi Ken, W7KKE The balun across each folded dipole is made with 50 ohm RG-303 teflon insulated coax cable, velocity factor 0.694 The phasing coupling harness is made with two matching lines of 75 ohm RG-302 teflon insulated coax cable, velocity factor 0.694 The polarity switcher is a relay Guardian Electric WJ MFG Corp 1365 series 12 V dc A410-364385-00 Due of the lenght of relay the lenght of coax RG-302 going from relay to the 50 ohm unbalance feed is critical to be 1/4 electrical wave long beginning from the folded dipole so that use only 75 ohm RG-302 or any other type of 75 ohm teflon insulated coax with the same lenght as the original one. For water protection it is necessary to enclose the PCB and relay into an additional plastic box and if anyone is interested on it I can send a set of pics showing my own installation. 73" de i8CVS Domenico _______________________________________________ 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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KiwiSAT Experimental package
by Fred Kennedy 20 Mar '08

20 Mar '08

Hi Guys, Help please. For our KiwiSAT experimental package we need to decode 9600 data simultaneously on the VHF and UHF (Main and Sub) Bands and would like to know which of the popular satellite multimode transceivers are capable of doing so. We believe the Icom IC 910 is one. What about the others? Negative reports would be helpful! 73 and thanks Fred (ZL1BYP)

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IEEE: Last interview with Arthur C Clarke
by Arthur Feller 20 Mar '08

20 Mar '08

See: http://spectrum.ieee.org/mar08/6075 73, art..... Life is short. Be swift to love! Make haste to be kind! - Henri Frederic Amiel, philosopher and writer (1821-1881)

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Icom IC2720H Full Duplex
by Kent R. Frazier 20 Mar '08

20 Mar '08

I was trying to work AO-27 this afternoon. Maybe I'm wrong, but I thought the IC2720H would operate in "Full Duplex", i.e. being able to transmit on one band while simultaneously receiving on the other. I had my left band set on the uplink of 145.850 and the right band set to the downlink of 436.795 (adjusting for doppler). I was able to hear the downlink just fine. When I tried to transmit on the left band (set as the main band) the audio on the right band would mute. Thus, I was unable to hear if I was hitting the satellite. I have the sub-band mute feature set to off. Is there anyone in the group that uses this radio that could help me out? Thanks, Kent -- Kent R. Frazier, K5KNT

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"Yagi Beam Combo Survey"
by nader omer 20 Mar '08

20 Mar '08

Hello all I wish if someone can do this survey again ... "Yagi Beam Combo Survey" the first survey posted on 14 Dec 1998 by Hank Heidt N4AFL ... tnx Hank http://www.amsat.org/amsat/archive/amsat-bb/199812/msg00241.html 73's --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.

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Arthur C. Clarke, SK
by Arthur Feller 20 Mar '08

20 Mar '08

See: http://www.washingtonpost.com/wp-dyn/content/article/2008/03/18/AR200803180… Also: http://www.nytimes.com/2008/03/19/books/19clarke.html?_r=1&hp&oref=slogin 73, art..... W4ART/2 Highland Park, NJ Life is short. Be swift to love! Make haste to be kind! - Henri Frederic Amiel, philosopher and writer (1821-1881)

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Re: HQ8R now QRV on all linear and FM sats
by Bill Dzurilla 19 Mar '08

19 Mar '08

Never mind, the TS-2000 is not working. Back to the HT in the morning. --- Bill Dzurilla <billdz.geo(a)yahoo.com> wrote: > We now have a TS-2000 at our disposal and I'll be > qrv > today and tomorrow on the sats. Just had a high > AO-16 > pass but it seems the radio was set to hear the > secondary receiver, so I heard no one. Sorry if you > heard my uplink and I did not respond. > > 73, Bill NZ5N and the HQ8R team > > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

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Re: HQ8R now QRV on all linear and FM sats
by Bill Dzurilla 19 Mar '08

19 Mar '08

We now have a TS-2000 at our disposal and I'll be qrv today and tomorrow on the sats. Just had a high AO-16 pass but it seems the radio was set to hear the secondary receiver, so I heard no one. Sorry if you heard my uplink and I did not respond. 73, Bill NZ5N and the HQ8R team ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

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Re: Writer Arthur C Clarke dies at 90
by Tom Clark, K3IO 19 Mar '08

19 Mar '08

[This message is resent -- for some reason it never made it yesterday] Trevor, M5AKA reports on the passing today of Arthur C Clark in 4S7-land. You might be interested in knowing that Arthur was an AMSAT Life Member. His member number, quite fittingly, was LM-2001. In the 1970's and 80's, Arthur was a frequent visitor to NASA. He was listed in the Goddard phone director as a consultant in the LANDSAT group, and he also served as a consultant at NASA HQ. In the early 1980's (when I was AMSAT President), on a trip to Washington, Dick Daniels (W4PUJ), Jan King (W3GEY) and I made the presentation of honorary AMSAT LM-2001 to Arthur. He was most appreciative and spent a couple of hours talking with us about our being the "Wright Brothers" of the satellite world, building satellites in our basements and garages. Arthur communicated with us several times in the years following that visit. He asked that his LM-2001 Journal subscription be sent in his name to a library in Sri Lanka. 73, Tom

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