[amsat-bb] Re: Need help to compile Gpredict
Oscar, I did a make install and everything worked. Let me know if you run into any issues. Here's a screenshot! Joseph Armbruster On Nov 2, 2011, at 8:31 PM, Joseph Armbruster wrote: Oscar, After reading the posts today I figured I would go home and take a quick stab at it. Here is what I have done and my results so-far. Total time for these steps was about 10 minutes (and my port upgrade is still running... grrr...) Anyhow, hopefully this helps! I'm going to step away from the computer for a bit, when I come back later, i'll report back on the result of my final run! Joseph Armbruster, KJ4JIO # grabbed gpredict-1.3.tar.gz from sf.net tar -zxvf gpredict-1.3.tar.gz ./configure # received an error: #checking for XML::Parser... configure: error: XML::Parser perl module is required for intltool sudo port install intltool #… waited … #ran into a dependency issue with p5.12-xml-parser #Error: Dependency 'p5.12-xml-parser' not found. #Error: Status 1 encountered during processing. #fixed it with: sudo port selfupdate sudo port upgrade intltool sudo port install intltool #re-ran: ./configure #received other errors: #configure: error: Package requirements (gtk+-2.0 = 2.18.0 glib-2.0 = 2.22.0 gthread-2.0 = 2.22.0 goocanvas = 0.15 libcurl = 7.19.0) were not met: #No package 'goocanvas' found #No package 'libcurl' found sudo port install goocanvas #completed without error sudo port install libcurl #completed without error #re-ran: ./configure #completed without error #SUMMARY: #Gpredict version... : 1.3 #Glib version... : 2.28.8 #Gio version : 2.28.8 #Gthread version : 2.28.8 #Gdk version : 2.24.7 #Gtk+ version... : 2.24.7 #GooCanvas version.. : 0.15 #Liburl version. : 7.22.0 #ran make #completed without error (took about 30 seconds to build on my 2.53Ghz Macbook Pro) #tried to run it cd src ./gpredict #received this error: #Xlib: extension RANDR missing on display /tmp/launch-gueRnl/org.x:0. sudo port upgrade outdated #… this is taking forever right now, because I use ports quite a bit… #… standby for more! On Nov 1, 2011, at 6:23 PM, Oscar Vera wrote: Hello, I have been having problems to compile Gpredict on mac. Is anyone gong to the AMSAT meeting and could provide a little help to compile Gredict? thank you. o. ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Satellite Tracking?
Hi folks, The Celestrak web site has some great in depth stuff on keps and tracking. I think most people just drop onto the site to get the keps, but its certainly worth a more detailed look. A big thank you to Dr. Kelso for a great site. 73 John G7HIA From: Geoff vk2...@ozemail.com.au To: amsat-bb@AMSAT.Org Sent: Wednesday, 2 November, 2011 21:42:08 Subject: [amsat-bb] Satellite Tracking? On Thu, 3 Nov 2011 04:16:13 am Armando Mercado wrote: Greetings, Well, in all seriousness, Who would like to post a set of keps for one (or all) of the amateur satellites now flying using the methods pioneered by Karl Meinzer, DJ4ZC and James Miller, G3RUH? I recall a few weeks ago someone decrying the lack technical discussion on the board. ...Well, here go you folks! Best 73's Armando N8IGJ snipped Hi Armando et al, I don't know about the methods written up by Karl James. For a long time I've had a project using Doppler shift curves in the back of my mind (the target doesn't need to cooperate). I have most of the hardware based around my HPSDR box and a t'bolt frequency reference. The software hasn't even progressed beyond ideas and algorithms. I haven't even picked a language or development environment (one day). I can see a very accurate Doppler shift curve being useful in the early days after a multiple cubesat launch. How accurate would you need to be to pick your cubesat from the crowd? One pass? multiple passes? Anyway that's this morning's breakfast coffee ideas from me. Have fun y'all :-). 73 de Geoff vk2tfg (/3). ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Satellite Tracking?
Hello Geoff, The doppler method was used in the early days of the space age, (and maybe still is). It's a neat bit of detective work. Monitor the frequency of the satellite, and determine the time of closest approach. From that you can determine the speed and altitude. Build up enough data points and you can figure out the orbit. Like you said, the target doesn't need to cooperate, just transmit. As with the latest cubesat launch, when there are many objects, it takes several weeks to figure out who's who. This could be way around that problem. 73 Armando N8IGJ Hi Armando et al, I don't know about the methods written up by Karl James. For a long time I've had a project using Doppler shift curves in the back of my mind (the target doesn't need to cooperate). I have most of the hardware based around my HPSDR box and a t'bolt frequency reference. The software hasn't even progressed beyond ideas and algorithms. I haven't even picked a language or development environment (one day). I can see a very accurate Doppler shift curve being useful in the early days after a multiple cubesat launch. How accurate would you need to be to pick your cubesat from the crowd? One pass? multiple passes? Anyway that's this morning's breakfast coffee ideas from me. Have fun y'all :-). 73 de Geoff vk2tfg (/3). ___ Sent via AMSAT-BB@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
[amsat-bb] ARISSat-1 Nov 3, 2011
Did anyone hear signals from ARISSat-1 on the last pass, (16:53 Z Cincinnati) ? I did not hear anything on 2 m or the transponder. Will listen and try both 2 m and also Tx thru the transponder ,Rx approx 145.930 +/- doppler. Farrell Winder, W8ZCF ___ Sent via AMSAT-BB@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
[amsat-bb] Re: ARISSat-1 Nov 3, 2011
Hi Farrell, Did anyone hear signals from ARISSat-1 on the last pass I copied ARISSat-1 on that pass. I was only tuned to 145.950 so just heard the FM stuff. The SSTV pictures were live shots. Signals were nominal. -- 73 de JoAnne K9JKM k9...@amsat.org ___ Sent via AMSAT-BB@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
[amsat-bb] Re: ARISSat-1 Nov 3, 2011
Yes, 50 telemetry frames received from North Carolina. Mark N8MH At 01:43 PM 11/3/2011 -0400, Farrell Winder wrote: Did anyone hear signals from ARISSat-1 on the last pass, (16:53 Z Cincinnati) ? I did not hear anything on 2 m or the transponder. Will listen and try both 2 m and also Tx thru the transponder ,Rx approx 145.930 +/- doppler. Farrell Winder, W8ZCF ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: ARISSat-1 Nov 3, 2011
JoAnne, Thanks, Signals OK last pass, Nov3, 18:29 Cincinnati. 2 m loud and clear, heard Bob K9OIM approx 145.930 thru the transponder for a few seconds at beginning of pass. Trying to connect with someone next pass 20:06 Z. Farrell, W8ZCF, Cincinnati Try next pass at - From: JoAnne Maenpaa k9...@comcast.net Sent: Thursday, November 03, 2011 1:55 PM To: 'AMSAT' AMSAT-BB@amsat.org Subject: [amsat-bb] Re: ARISSat-1 Nov 3, 2011 Hi Farrell, Did anyone hear signals from ARISSat-1 on the last pass I copied ARISSat-1 on that pass. I was only tuned to 145.950 so just heard the FM stuff. The SSTV pictures were live shots. Signals were nominal. -- 73 de JoAnne K9JKM k9...@amsat.org ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Kansas City Tracker
Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Kansas City Tracker
Since it has been a while since these have been up on the list, I want to remind folks that this requires an early early early generation slot, called an ISA slot. The drivers for the card are STRICTLY DOS 6.2 and earlier interrupt handlers and are zero likely to work on a modern windows machine. If you have an old machine with ISA slots, running DOS, this board was one of the engineering marvels of its time and should still work beautifully on Yaesu rotators today. You will need Quiktrak or IT to run it (again, DOS computer programs). Bob N4HY On Thu, Nov 3, 2011 at 4:09 PM, Al Ozias aloz...@copper.net wrote: Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listinfo/amsat-bb -- Bob McGwier Facebook: N4HYBob ARS: N4HY ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Kansas City Tracker
WISP is another Windows program that controlled the Kansas City Tracker ISA based card very nicely, if you want to use it in a Windows 95/98 environment. Tim - N8DEU - Original Message - From: Robert McGwier rwmcgw...@gmail.com To: Al Ozias aloz...@copper.net Cc: AMSAT-BB amsat-bb@AMSAT.Org Sent: Thursday, November 03, 2011 3:35 PM Subject: [amsat-bb] Re: Kansas City Tracker Since it has been a while since these have been up on the list, I want to remind folks that this requires an early early early generation slot, called an ISA slot. The drivers for the card are STRICTLY DOS 6.2 and earlier interrupt handlers and are zero likely to work on a modern windows machine. If you have an old machine with ISA slots, running DOS, this board was one of the engineering marvels of its time and should still work beautifully on Yaesu rotators today. You will need Quiktrak or IT to run it (again, DOS computer programs). Bob N4HY On Thu, Nov 3, 2011 at 4:09 PM, Al Ozias aloz...@copper.net wrote: Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listinfo/amsat-bb -- Bob McGwier Facebook: N4HYBob ARS: N4HY ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Some Elmering requested for uplinking to ARISSAT-1
Thanks Dave and everyone else who responded, both personally and on the board. To comment on a couple of comments: I certainly expect to hook up computer control of the doppler comp etc, but was trying to do it manually at first just to understand better. Re my problems inside: The shingles on the house are pretty new so are not embedded with guck. However, I expected them to be pretty neutral. Not so. But anyway, I've given up having antennas in my attic, and I'm outside now exclusively. Re power, using CW to match up. Ok, I'll try my full power out, and CW. Thanks for the ideas. Re other sats, beam, etc: Good ideas for sure; I wanted to eliminate variables, and since I can't mess up pointing with an omni, and I have received ARRISat easily, I figured ARRISat involved the fewest variables. But I'll try the other stuff too. Thanks again to everyone! I'll let you know how I make out. In the meantime, I'd like to hear from anyone who has been successful with an omni or Lindenblad with 50W uplink. Burns, W2BFJ On Wed, Nov 2, 2011 at 6:49 PM, David Palmer KB5WIA kb5...@amsat.orgwrote: Hi Burns, My 2 cents -- sounds like things are mostly okay (your recieving setup is obviously good if you can hear others in the transponder passband). The big factor that I can see is lack of gain on the uplink. I've successfully gotten into ARISSAT with my 5W QRP radio, but that's using a 13 dBd gain yagi. In theory the ERP of your 25W uplink isn't too far below that, so it would be worthwhile trying the 50W to see if that helps. That or switch to an antenna outside with some gain... Other factors to consider are sometimes the sats transponder is off (so even if everything at your end is okay you won't hear your own signal, nor anyone elses). And the return signal varies greatly from pass to pass, depending (I think) on the relative orientation of the antenna stub. Also be sure to try finding yourself on CW first SSB is often very difficult to copy on ARISSAT, much easier to start with CW and once you've found yourself switch over. 73! de Dave KB5WIA Can someone comment on my method, both in terms of technical goodness and good operating practice? A couple specific questions: 1) Xmitting in the middle of the passband and just scanning, I should be able to at least briefly find myself without messing with doppler, right? I was planning to lock the receive and transmit frequencies (constant sum) once I found myself and follow the doppler by hand, but I never got to that step. 2) I'm right that the sidebands are inverted from receive to xmit, right? I think I would hear something even if that was wrong. 3) Finally, what about power? How much have you required for success on ARRISAT? I was running around 25W. I could boost up to as high as 50, but I can only diddle so many knobs in 5 or 10 minutes :-) 3) I know a beam would be better, but trying to reduce variables, and pointing is one of them. Besides, I'm inside in my shack! But has anyone successfully uplinked with an omni/circular? I can always remove the parasitic elements and end up with a center-fed dipole to remove the circularity. (Not sure how that would affect the impedance match...) Thanks! Burns, W2BFJ ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Kansas City Tracker
I have my original PacardBell P100 desktop with win95 which has been gathering dust on a shelf. It has ISA slots and parallel port which would probably be ideal for running KC Tracker. I offer it for sale for $50-OBO (as-is with keyboard and mouse but no monitor) plus shipping (best to go parcel-post from my zip 99635). I kept it since these old machines have little or no residual value in case I wanted to run some old legacy sw. But I also have a IBM P90 Thinkpad with win95 for this purpose (I also use it for packet and a DOS cw keyboard program). 73, Ed - KL7UW At 12:35 PM 11/3/2011, Robert McGwier wrote: Since it has been a while since these have been up on the list, I want to remind folks that this requires an early early early generation slot, called an ISA slot. The drivers for the card are STRICTLY DOS 6.2 and earlier interrupt handlers and are zero likely to work on a modern windows machine. If you have an old machine with ISA slots, running DOS, this board was one of the engineering marvels of its time and should still work beautifully on Yaesu rotators today. You will need Quiktrak or IT to run it (again, DOS computer programs). Bob N4HY On Thu, Nov 3, 2011 at 4:09 PM, Al Ozias aloz...@copper.net wrote: Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listinfo/amsat-bb -- Bob McGwier Facebook: N4HYBob ARS: N4HY ___ Sent via AMSAT-BB@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 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com == ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Kansas City Tracker
I still use my KCT card with SatPS32 under windows XP. I bought an updated ISA slot motherboard for somewhat more then I would of paid for a comparable performance Mobo for the same money. That was about 3 years ago. All is still working well. I tried to upgrade to Win7 a year ago but gave up because of some other issues I don't quite remember other than the KCT. This is my oldest computer I now own, but still works well running APRS with WX, and to track sats with... 73 Jeff kb2m -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Robert McGwier Sent: Thursday, November 03, 2011 6:27 PM To: Tim Cunningham Cc: AMSAT-BB Subject: [amsat-bb] Re: Kansas City Tracker You are right! Senior moment! On Nov 3, 2011 6:13 PM, Tim Cunningham tim_cunning...@charter.net wrote: WISP is another Windows program that controlled the Kansas City Tracker ISA based card very nicely, if you want to use it in a Windows 95/98 environment. Tim - N8DEU - Original Message - From: Robert McGwier rwmcgw...@gmail.com To: Al Ozias aloz...@copper.net Cc: AMSAT-BB amsat-bb@AMSAT.Org Sent: Thursday, November 03, 2011 3:35 PM Subject: [amsat-bb] Re: Kansas City Tracker Since it has been a while since these have been up on the list, I want to remind folks that this requires an early early early generation slot, called an ISA slot. The drivers for the card are STRICTLY DOS 6.2 and earlier interrupt handlers and are zero likely to work on a modern windows machine. If you have an old machine with ISA slots, running DOS, this board was one of the engineering marvels of its time and should still work beautifully on Yaesu rotators today. You will need Quiktrak or IT to run it (again, DOS computer programs). Bob N4HY On Thu, Nov 3, 2011 at 4:09 PM, Al Ozias aloz...@copper.net wrote: Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF ___ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/**li stinfo/amsat-bb http://**amsat.org/mailman/listinfo/**amsat-bbhttp://amsat.org/mailman/lis tinfo/amsat-bb -- Bob McGwier Facebook: N4HYBob ARS: N4HY __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listin fo/amsat-bb __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listin fo/amsat-bb ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Mast-mounted preamp recommendation?
All, Does anyone have any recommendations on high quality mast-mounted preamps for UHF? We're using the Icom AG-35 and not happy with the noise figure. We're going to try an adjustment described here http://www.eham.net/reviews/detail/6116. We are looking at the amps from ARR and SSB. Any other recommendations? http://www.ssbusa.com/gaasfet.html http://www.advancedreceiver.com/page10.html Thanks, --Jamie ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Mast-mounted preamp recommendation?
The difficulty with mast mounted preamplifiers is that they have to be selected for a specific electromagnetic environment. If your environment is hot with a lot of ham activity, local pagers and FAA stations, the preamp may not be able to handle all of the RF, unless it is suitably narrow banded. Some preamplifiers are broadband and some are narrow band, where you will be operating. If your environment is quiet, most any preamplifer will work well. If your RF environment is NOT quiet, you have to limit the preamp RF pass band for your activity. Otherwise too much RF gets into it and raises the noise floor, reducing the S/N Last time I tested a ICOM 2M preamp, it performed well, less than 1 dB NF with pro test gear. What does your RF environment look like ? Stan, W1LEFN41sr Cape Cod On 11/3/2011 9:18 PM, James Cutler wrote: All, Does anyone have any recommendations on high quality mast-mounted preamps for UHF? We're using the Icom AG-35 and not happy with the noise figure. We're going to try an adjustment described here http://www.eham.net/reviews/detail/6116. We are looking at the amps from ARR and SSB. Any other recommendations? http://www.ssbusa.com/gaasfet.html http://www.advancedreceiver.com/page10.html Thanks, --Jamie ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Kansas City Tracker
I also have an old Motherboard with an ISA slot. Just the motherboard, processor (1ghz, I think), and memory. I do not have anything that needs the ISA slot anymore, so it's up for grabs. No reasonable offer will be refused. My wife insists... :-) Greg KO6TH Date: Thu, 3 Nov 2011 15:17:18 -0800 To: rwmcgw...@gmail.com; aloz...@copper.net From: kl...@acsalaska.net CC: amsat-bb@amsat.org Subject: [amsat-bb] Re: Kansas City Tracker I have my original PacardBell P100 desktop with win95 which has been gathering dust on a shelf. It has ISA slots and parallel port which would probably be ideal for running KC Tracker. I offer it for sale for $50-OBO (as-is with keyboard and mouse but no monitor) plus shipping (best to go parcel-post from my zip 99635). I kept it since these old machines have little or no residual value in case I wanted to run some old legacy sw. But I also have a IBM P90 Thinkpad with win95 for this purpose (I also use it for packet and a DOS cw keyboard program). 73, Ed - KL7UW At 12:35 PM 11/3/2011, Robert McGwier wrote: Since it has been a while since these have been up on the list, I want to remind folks that this requires an early early early generation slot, called an ISA slot. The drivers for the card are STRICTLY DOS 6.2 and earlier interrupt handlers and are zero likely to work on a modern windows machine. If you have an old machine with ISA slots, running DOS, this board was one of the engineering marvels of its time and should still work beautifully on Yaesu rotators today. You will need Quiktrak or IT to run it (again, DOS computer programs). Bob N4HY On Thu, Nov 3, 2011 at 4:09 PM, Al Ozias aloz...@copper.net wrote: Surplus KCT I have at my QTH a Kansas City Tracker board with a printed manual and a copy of the KCT.ZIP file. The owner of the board, George-WA5KBH, would like to find it a home. To acquire it contact me (Al-N7EQF) directly by email. The cost of acquiring the item is to pay for the shipping cost (flat rate priority mail envelope), commit a donation to AMSAT and promise not to ask me any questions concerning how to install, configure, or operate it (I do not know). The board is un-tested and may or may not work, no known reason to suspect it's condition. Thanks - Al - N7EQF __**_ Sent via AMSAT-BB@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-bbhttp://amsat.org/mailman/listinfo/amsat-bb -- Bob McGwier Facebook: N4HYBob ARS: N4HY ___ Sent via AMSAT-BB@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 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com == ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Mast-mounted preamp recommendation?
Here you go: http://www.hf-berg.de/HFC/vorverstaerker_vox_mast.htm Excellent products, quick shipment from Germany, good communication. Stefan, VE4NSA On Thu, Nov 3, 2011 at 8:18 PM, James Cutler jwcut...@gmail.com wrote: All, Does anyone have any recommendations on high quality mast-mounted preamps for UHF? We're using the Icom AG-35 and not happy with the noise figure. We're going to try an adjustment described here http://www.eham.net/reviews/detail/6116. We are looking at the amps from ARR and SSB. Any other recommendations? http://www.ssbusa.com/gaasfet.html http://www.advancedreceiver.com/page10.html Thanks, --Jamie ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Mast-mounted preamp recommendation?
Hi Jamie In a separate email I have sent to you an article that I write for Radio Rivista 9/1993 describing with schematic diagrams and mechanical drawings my low noise GaAsFET high dinamic range and high selectivity cavity preamplifier for 435 MHz with NF=0,43 dB and gain G = 20 dB I am using it with great success in my environment area in the bay of Naples wich is hot with a lot of ham activity, local pagers and FAA stations. By the way it require a lot of mechanical work but for best performance it must be tuned for the lowest Noise Figure using only a very simple diode noise generator that was described in the article. Unfortunately building low noise preamplifiers and tuning instruments by yourself in novadays seems to become a RF endangered species Have fun. 73 de i8CVS Domenico - Original Message - From: James Cutler jwcut...@gmail.com To: amsat-bb@amsat.org Sent: Friday, November 04, 2011 2:18 AM Subject: [amsat-bb] Mast-mounted preamp recommendation? All, Does anyone have any recommendations on high quality mast-mounted preamps for UHF? We're using the Icom AG-35 and not happy with the noise figure. We're going to try an adjustment described here http://www.eham.net/reviews/detail/6116. We are looking at the amps from ARR and SSB. Any other recommendations? http://www.ssbusa.com/gaasfet.html http://www.advancedreceiver.com/page10.html Thanks, --Jamie ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
