April 2010 - AMSAT-BB - mailman.amsat.org

FS: Yaesu FT8900 for FM sat use
by John Geiger 17 Apr '10

17 Apr '10

I have for sale a Yaesu FT8900 quadband (10m/6m/2m/70cm)transceiver. It does 50 watts on 10m, 6m and 2m FM and 35 watts on 70cm. It comes with the box, manual, power cord, and mic. Works fine, and looks good other than a small scuff on the top of the radio. This radio does dual receive so it is perfect for full duplex on the FM satellites. I am am asking $320 shipped and can take paypal/check/MO. 73s John AA5JG

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Radios for satellite operations
by Jacob Tennant 17 Apr '10

17 Apr '10

Was wondering today after searching around on the internet, what radios are people using for satellite operations as I noticed the ICOM IC-910H and the Yaesu FT-847 are now discontinued? Was hoping to get into the SSB/CW satellites but was hoping to do it on a new radio, but it seems the satellite radios are disappearing from the market. I do have a Yaesu FT-857D that I am getting setup to do the FM satellites with and will try the SSB/CW satellites if I can do it with that radio. Jacob Tennant - K8JWT

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Arecibo
by Nick Pugh K5QXJ 17 Apr '10

17 Apr '10

Here is a good reference for the Arecibo EME event http://www.k2txb.com/2010_arecibo_operation.htm nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School

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Arecibo and circular polarization using cheap yagis
by Douglas Quagliana 17 Apr '10

17 Apr '10

I heard Arecibo would be using circular polarization, but I haven't heard if it will be left or right-handed circular polarization. I also heard that there's a way to do circular polarization with the popular "cheap yagis." Apparently the details are in an article in the April 1999 issue of CQ VHF "Cheap Circular Polarization? It Can Be Done" on pages 66-69. Is there anyone on the list that has this back issue that can tell me what the method is that is described in this article? Is it a physical quarter-wave displacement on the same boom? Two booms with a quarter-wave coax delay? Something else? How is the circular polarization done with the cheap yagis? Douglas KA2UPW/5

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Arecibo
by Nick Pugh K5QXJ 17 Apr '10

17 Apr '10

Hi All I have a KLM 436 with < 1 db preamp I did not here them yesterday. I have about 2 db of sun noise. The question I have for those who copied Arecibo yesterday how much sun noise do you have in a 2.4 KHz band with filter? Thanks nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School

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HO-68 Mode Schedule
by John Zaruba Jr 17 Apr '10

17 Apr '10

Does anyone know if HO-68 will move to an automated schedule after commissioning? Does the satellite have the ability to automatically schedule it's operational state or does it require interaction from the ground command station? The english language version of CAMSAT's website does not discuss this aspect of the satellite's operation. 73, John K2ZA

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op error
by Bob- W7LRD 17 Apr '10

17 Apr '10

My 910 in cw will tx when key is closed whether in vox mode or not. Set the key for external keyer. I'm sure it's simple, I can't figure it out. 73 Bob W7LRD

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OT-ish - anyone got FT-290 bits?
by Gordon JC Pearce 17 Apr '10

17 Apr '10

Hi all, In order to get onto the linear transponders I picked up a slight-project Yaesu FT-290 at a rally last weekend. It's pretty much working, but the display is faulty. It pretty much only ever displays a backwards F, no matter what you do. Other than that it tunes, memorises, clarifies and generally seems to behave itself, so I suspect that the display IC is faulty and the CPU is actually okay. So, does anyone have a dead FT-[267]90 for spares? Really, I just need the display PCB (the LCD seems fine, so I'd take a chance on one with a broken LCD) or even just the chip. If I could find spec on the chip I'd even have a crack at building a replacement controller. Feel free to reply offlist if you don't want to noise up the list with radio fixing chatter. Thanks, Gordon MM0YEQ

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AGWPE and Window 7 problems
by D. Craig Fox 17 Apr '10

17 Apr '10

Greetings all. Having only 12 el on 70cm and no az/el, Arecibo is so not happening at my QTH. But I digress. I recently went to a new Windows 7 (Intel Core I-7 processor) computer from a P4 (what a delight.) Anyway, SatPC, digipan, MMRTTY, HRD all work fine using my Signalink. What no longer works, however, is AGWPE and UISS. Unless I set the default speakers in the computer to the USB codec (Signalink), it simply will not transmit packet. Decodes fine. This is preventing me from d'ing on NO44 and ISS. I have posted this problem on some other sites but so far no useful feedback. If you are running Signalink, AGWPE and Windows 7, can we talk offline? Thanks in advance. 73s Craig N6RSX NOTICE: This communication may contain privileged or other confidential information. If you are not the intended recipient of this communication, or an employee or agent responsible for delivering this communication to the intended recipient, please advise the sender by reply email and immediately delete the message and any attachments without copying or disclosing the contents. Thank you.

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Re: Arecibo
by Bill Dzurilla 16 Apr '10

16 Apr '10

I'm at work and not QRV, but I had no problem copying them with a single 12 el. yagi leaned again the chair when they did the test a couple of weeks ago, and most everyone else gave them good reports. At the time, they were running 50w, a barefoot Kenwood TS-2000. They must have changed rigs if now they only have 20w. And something else must be wrong, because even folks with big antennas are having trouble copying them (more so than the 50w vs. 20w would suggest). There's a live feed at http://www.ustream.tv/channel/kp4ao-eme Good luck and 73, Bill NZ5N > From: Sebastian <w4as(a)bellsouth.net> > Subject: [amsat-bb] Re: Arecibo > To: "Mark L.Hammond" <marklhammond(a)gmail.com> > Cc: AMSAT BB <AMSAT-BB(a)amsat.org> > Message-ID: <4141F900-265D-4987-B3BE-59B3834BE01B(a)bellsouth.net> > Content-Type: text/plain; > charset=us-ascii > > I can hear very faint CW from them. > > I'm surprised as I have just a single yagi, and apparently > their amp isn't working. > > 73 de W4AS

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