Re: [amsat-bb] FM birds
Tracking doppler on 2m and 70cm was hard enough at field day. I like 2GHz and up, but do not want to even think about the doppler. In the KITSAT days, I used an IC-751 as the receive IF. It has a true FM detector, with discriminator centered at 0-volts. It steps in 1 or 10 Hz increments, even on FM. I wrote a simple radio-control program which would take data from InstantTrack, calculate frequency from that, and set the radio on the expected frequency at the beginning of the pass. Didn't matter if there was a little error, once AOS happened, the AFC put the receiver dead-on, and I got good data for the entire pass -- hands free. It was a joy to watch. And that was a simple digital mode. The other thing that is exciting about going digital, is the idea of CAT-5 (or fiber) to the box at the antenna, not coax. Digital will enable so much . . . . 73, Jim wb4...@amsat.org On 7/27/2014 1:24 AM, Phil Karn wrote: On 07/22/2014 07:49 AM, wa4...@comcast.net wrote: SSB/CW birds are the only way to go and if you build it they will come . Think about what it would be like to tune for Doppler while working SSB through a LEO satellite on microwave. Before you say computer control, work out the effect of even a tiny error in your clock or orbital elements on a high elevation pass and remember that SSB has no carrier or pilot tone for closed-loop frequency tracking. Sure, you could have a second receiver track the satellite's beacon. But if you're going to all that trouble, why not just have it track a single high speed data stream from the satellite, one that's much less affected by Doppler in the first place? ___ 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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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
Re: [amsat-bb] going digital
Which is exactly what the FunCube guys did, and look at what they've wrought!! 73, Jim wb4...@amsat.org When DirecTV designed their satellite broadcast system, did they worry about backward compatibility with the multitude (or so it probably seemed) of existing C-band BUD (Big Ugly Dish) owners? All of whom were then receiving analog FM, I might add. If not, then why are they still in business? Probably because they didn't design a satellite. They designed an entire _/*system*/_ including ground station components as well as flight hardware. The ground system components were made available such that their target audience was able to upgrade their BUD installations with only reasonable expenditures of time, effort and money. But that's just a guess in my part. I'd love to chat with you on the new digital hamsat, but if it's going to require I spend $5k+ on hard-to-source, esoteric components and cobble them together with duct tape, then it'll be a while before I'm QRV. So, the first few days after launch those 60 DV channels may be a little quiet. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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
Re: [amsat-bb] going digital
Look at what the FunCube guys did! On 7/21/2014 5:00 PM, Gus wrote: On 07/21/2014 01:00 PM, Phil Karn wrote: Next questions: Does a DirecTV receiving station cost $5K? Actually, DirecTV is not available for purchase in my neck of the woods. I can get a system installed, but it wouldn't be my system to fiddle with. Are its components hard to source or esoteric? Well, I know where I could nick one, but I'd rather not. Otherwise, I guess I could source one overseas, ship it in, then bow down before the Customs Excise godlings. ham gear is 10 + 17.5% but there's no way they'd pass that as ham gear, so probably 115 + 17.5% or worse. That might satisfy Rx needs, but wouldn't include a transmitter Does that sound hard to source or esoteric? If not, what makes you think that a digital ground station for an AMSAT satellite should be? Phil, I'm not saying it /should/ be, but that if it is, you won't get many users on the system. So, part of the system design for any such bird had better include design of low cost, easy to find, simple to use hardware that will allow me -- or any other doofus like me -- to get QRV without too much hardship. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Nova for Windows
All: Two problems with Nova after the move from Windows 7: 1. It doesn't run. Throws Exception ERegistryException in module Nfw32.exe at 00079BEE. Failed to set data for . Can Nova run on Win7 (32bit??) 2. Can't find my registration number or activation code or whatever? Any way to recover this? Thanks, and good luck at FD! 73, Jim wb4...@amsat.oorg --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Field Day
All: Has the new FunCube been released for use, or is it still being commissioned? Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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
Re: [amsat-bb] Hotmail Rejecting Amsat
Comcast is blocking a bunch of stuff as well. The spammers are winning. On 6/18/2014 9:02 PM, Gary wrote: Apparently Hotmail is blocking all things Amsat. The email reflector is blocked. My Amsat alias used to forward to my Hotmail account, but now bounces. I would be interested if someone has solved this. Please do not reply that I need to get rid of Hotmail. Thanks and 73, Joe kk0sd ___ 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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Ancient History
All: Back in the early days of PACSATs, I ran SatLink, and somehow acquired the source code -- which is printed in a stack of paper several inches high. I would like to electronically archive, and before spending hours at the scanner, wonder if anyone knows where it may be published? Google searches lead me to commercial programs, and I've not found at the amsat web site either. Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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: Ancient History
All: With the assistance of WD9EWK, I learned that the source code IS on the Amsat.org website: ftp://ftp.amsat.org/amsat/software/PC/pacsat/ In case anyone else is interested . . . . . 73, Jim wb4...@amsat.org On 1/25/2014 1:44 PM, Jim Sanford wrote: All: Back in the early days of PACSATs, I ran SatLink, and somehow acquired the source code -- which is printed in a stack of paper several inches high. I would like to electronically archive, and before spending hours at the scanner, wonder if anyone knows where it may be published? Google searches lead me to commercial programs, and I've not found at the amsat web site either. Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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: why not to buy an M2 antenna Sealing Coax
When I lived in Hampton Roads (and was in the Nav) I eventually came on to the following algorithm: 2 layers of good electrical tape 2 layers of coax seal 2 more layers of good electrical tape, each overlapping the under layer. When I retired from the Navy and took the antennas down, connectors that had been in the air for 15 years looked brand new. An additional bennie, if I had to open one up, just a slit with a knife and I could peel the layers back get access to the connector. When done, just press back into place and cover with 2 more layers of good tape. Worked great for me. Good luck 73, Jim wb4...@amsat.org On 12/10/2013 2:21 PM, Rich/wa4bue wrote: I am not a fan of COAX Seal, it tends to migrate into the connector. In the Hampton Roads area, a NAVY town, we use the old NAVY way: * Light application of high great Silicon * Double sided electrical tape rap * Electrical tape rap * Spray lacquer over * Nylon tie on each end Great seal! - Original Message - From: WA6FWF wa6...@sbcglobal.net To: amsat-bb@amsat.org Sent: Tuesday, December 10, 2013 1:54 PM Subject: [amsat-bb] Re: why not to buy an M2 antenna Well I look my antennas over each year but they have always been relatively easy to get at even when they were on a glen martin tower on the roof, I could see every other year if it is a major undertaking but based on his call he is in New York, to think you can put a antenna up and ignore it for years in a area with snow and freezing temps stretches reason. I'm also a fan of coax seal and some sort of coating on the elements, When I look my antennas over I'm checking for loose bolts and UV damage to plastic parts and coax, out on the west coast it is the Sun and heat that is the thing to worry about. 73 Kevin WA6FWF On 12/10/2013 10:32 AM, R.T.Liddy wrote: I'm neutral on this topic, but I was curious if the M2 Manual mentioned anything about maintenance. Here are the instructions: http://www.m2inc.com/pdf_manuals/436CP30.pdf There is no mention of maintenance. Of course, it would be a good idea to check things out regularly. But, depending on where the antenna is installed, it could be quite difficult to get to it once it's put up. I can't think of anyone that actually does yearly maintenance on their antennas. My rule of thumb is to anticipate what problems could occur and do what's necessary to avoid them during the initial installation. I always use Coax-Seal and spray the heck out of everything with clear Rustoleum. GL, Bob K8BL From: WA6FWF wa6...@sbcglobal.net To: amsat-bb@amsat.org Sent: Tuesday, December 10, 2013 1:01 PM Subject: [amsat-bb] Re: why not to buy an M2 antenna Might I ask what sort of preventative maintenance did you perform each year? 73 Kevin WA6FWF On 12/10/2013 8:46 AM, Lizeth Norman wrote: Purchased a M2 436CP30. Had a failure of the switching block in less than 5 years. White plastic cracked and allowed water to ingress to the switcher. Customer service?? No return call. Pics on request. Norm n3ykf ___ 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 ___ 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 ___ 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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] AO-73 keps in NFW
All: I trued to get keps for AO-73, but do not see that bird listed in Nova for windows, after updating from celestrak.com. Any suggestions? Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] remailer
All: Anything up with the remailer? Just got a bounce on 2 emails I sent to somebody @amsat.org: host inbound.ucsd.edu[132.239.0.180]: 550 #5.7.1 Your access to submit messages to this e-mail system has been rejected. Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Labtech AB PA1268
All: I am trying to find information on the subject amplifier to assist in an estate sale. I'm pretty sure that it is an L-band power amp, purchased for uplink to AO-40. I am seeking any technical information available, even specs, and new price or estimated value. Google and eBay have struck out, so hoping someone here can help. Thanks 73, Jim wb4...@amsat.org --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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: Yaesu g 5500 elevation rotator
I had this several years ago. When I got it open, the pot was fine, but the fine center arm wire had broken due to fatigue. Another bad mechanical design issue in these otherwise nice rotors. By all means, get a replacement, but if the pot is good and could be easily repaired by soldering and reinforcing mechanically the connection, you can keep the spare for when you really need it. Good luck!! 73, Jim wb4...@amsat.org On 9/9/2013 1:47 PM, Alan wrote: Nick, 2-3 years ago, mine failed. I called Yaesu/Vertex, and after talking them through finding it in the rotator rather than the controller, they came up with one. Parts and shipping were reasonable. 73s, Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Nick Pugh K5QXJ Sent: Monday, September 09, 2013 8:31 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Yaesu g 5500 elevation rotator The 500 pot on the Yaesu g5500 elevation rotator failed. Does some on the list have a replacement part number and source preferable a USA source? Thanks nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School ___ 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 ___ 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: Software must have list
Drew: Here's my list, for what it's worth: Nova (It does some things better than SatPC32, some not as well -- I have and use both) Smith chart program EZNEC Some kind of CAD program for doing schematic and other drawings (I use TurboCAD, mostly because I've used it for over 15 years and found a new version relatively expensively) Elsie filter design software (say you want a better diplexer to use 2m and 70cm radios on the same dual-band antenna, Elsie will let you design up to 7 or 9 poles) Obvious office stuff (I use OpenOffice, tho have MS on the laptop for the rare occasion OO doesn't quite cut it) Skype -- don't use it often, but nice to have when you want it, especially with all the time I spend in hotel rooms A good restore disk creator. I had to buy one for the XP desktop, but think the Win7 laptop came with it, albeit VERY difficult to find. Finally, a manual -- continuing the tradition of refusing to provide user documentation with the product (it's all in the help files -- yeah, right) I bought Windows 7, the missing manual from O'Reilly. Missing manual is a series, this is the first one I've bought, and it has been VERY helpful in figuring out Win7. I hate the new interface (why must they tinker for the sake of tinkering?!) but I really do like the much faster boot, awake, and shutdown of Win7 compared to XP (on comparable processors -- replaced both machines within a month of each other.) I'll be eager to see others' lists -- probably a WHOLE lot better ideas out there! Good luck! 73, jim wb4...@amsat.org On 8/18/2012 4:50 PM, Andrew Glasbrenner wrote: So my 4 yr old XP shack computer is in critical care right now, and I have a new quad core Win 7 HP that I'm setting up today. So far I've downloaded and installed: SatPC32 (still working on the speech error problem) MixW 3 HDR 5.sumthing Spectravue next up is WSJT What must have ham radio programs, especially satellite/vhf/uhf, do you have and recommend? 73, Drew KO4MA ___ 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] Nova and Sat-PC32 on Windows 7
All: My laptop finally died, and the replacement came with 64-bit version of Windows 7. I installed (as administrator) both Sat-PC32 and Nova; neither works. Does anyone have any idea or instructions on how to install? Or are they known to NOT work, in which case, what are people using for 64-bit Windows 7? Thanks 73, Jim wb4...@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: Nova and Sat-PC32 on Windows 7
Thanks all. Already have some good suggestions. Will try and advise. 73, Jim wb4...@amsat.org On 7/4/2012 4:20 PM, Jim Sanford wrote: All: My laptop finally died, and the replacement came with 64-bit version of Windows 7. I installed (as administrator) both Sat-PC32 and Nova; neither works. Does anyone have any idea or instructions on how to install? Or are they known to NOT work, in which case, what are people using for 64-bit Windows 7? Thanks 73, Jim wb4...@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] Nova for windows on Winders7
All: Finally installed Nova on the new laptop. (Yeah, for FD) Updating keps doesn't work -- complains about some missing file. Updating time from internet doesnl't work. Just tries and tries Any suggestions on getting it to work on Win7? Thanks 73, jim wb4...@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] OT -- Satellite Internet
All: Living out here in the boondocks (so I can plant a tower and grow a credible aluminum microwave array) my internet options are dialup, verizon, and satellite. Verizon was unreliable (couldn't stay connected; had to reset the device several times an hour), so gave up. Looked at satellite, considered Wild Blue. Then heard bad things about them. Then they no longer served my area. Went with Hughes, which was OK for a year or so, then fell on their sword. Paying for 1mb downloads, getting 200K to 700K. Most emails have to be sent several times before getting through without some kind of error -- which does not happen when I take the same laptop on the road and connect through a hotel network. I've been working with Hughes customer service since October --unsatisfactory: -- they have not been able to improve things for more than a couple of hours -- they cannot deviate from the script, and want to blame my router -- even when it is out of circuit -- they have difficulty with the language -- they are unwilling or unable to connect me to a higher level of tech support So, Hughes is about to become history. I've recently learned about a new satellite service called exede, which I've traced to Wild Blue under a new name. They claim up to 12Mb download rates, but have a total capacity cap -- which appears to be well beyond my average daily use. (I only busted Hughes' daily limit once in 3 years, when I installed WindersXP on a new machine and had to get all the service packs and security fixes.) I'm wondering if anyone has any experience, good or bad, with exede/WildBlue. Please respond direct, off list, to wb4...@amsat.org To list members and operators: thanks for indulging brief, off-topic but related, info. Very 73, Jim wb4...@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: Good 70cm all mode radios for satellites
I agree. Have a 475 forweak signal, and a 471 for microwave IF. Good rigs. 73, Jim wb4...@amsat.org On 7/27/2011 3:54 PM, Bob- W7LRD wrote: Find a IC 451 or IC471. A oldy but a goodie. Very reasonable on the usual used markets, ebay, hamfests etc. 73 Bob W7LRD - Original Message - From: John Geigeraa...@fidmail.com To: AMSAT-BBamsat-bb@amsat.org Sent: Wednesday, July 27, 2011 11:43:33 AM Subject: [amsat-bb] Good 70cm all mode radios for satellites What are some of the best 70cm all mode radios to use on the satellites? I am looking for a monoband radio, not one of the HF/VHF/UHF radios as I have the other bands covered already. I would like one that is plenty sensitive on FM as well to receive the FM satellites. 73s John AA5JG ___ 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 ___ 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: Should I abandon full doppler correction?
All: For what it's worth, I think I prefer the manual doppler correction on the highest frequency, which can be done manually. Full doppler essentially requires constant computer control of both tx rx frequencies, AND a whole lot of accurate data. I've had similar experiences at Field Day, and was able to pick out the guys doing full doppler, and rarely able to work them. For whatever my opinion is worth 73, Jim wb4...@amsat.org On 7/24/2011 5:17 PM, Tom Schaefer, NY4I wrote: Hi all, I just tried a nice pass on FO-29. I heard K9CIS on CW and W5BK from Texas. In both cases, while I am using full doppler correction with my 9100 and MacDoppler, I suspect they are leaving the transmit frequency fixed as they both changed frequency. K9CIS on CW was quite extreme in the Doppler shift. I know that this is a by-product of me using full doppler to listen to stations that are not, but it seems that the majority of the stations I hear are NOT using flu doppler. I have asked this question before, but it seems to be happening more frequently. Should I abandon full doppler correction? Another less black-and-white step is that if I hear a station moving to adjust my settings so I am not doing full doppler. Has anyone ever taken a survey to see how many satellite users actually use full doppler. Am I assuming more guys use computers and anyone of the multiple ways to do computer control that have ben available for years? Does anyone ever talk about this in AMSAT circles? Sort of like the encouragement one gives to people afraid of LOTW to try it? Computers in the shack…NEVER! I exaggerate but it seems that way. Then again, being a computer person and having computer capable rigs I realize I am skewed in my expectations. I know there are guys working with old 271/471 pairs or even the old FT726 out there. Great radios and a simple way to do it, but even they have ways to do full doppler control and they have been out for 20 years. Thanks, Tom Tom Schaefer, NY4I n...@arrl.net EL88pb Monitoring EchoLink node KJ4FEC-L 489389 DSTAR Capable APRS: NY4I-15 ___ 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] Microwave Modules MML 144/200S manual/schematic sought
All: I was just /given/ one of the subject amplifiers. Google has not turned up anything; anybody got a line on manual/schematic? Thanks 73, Jim wb4...@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: searching advice on low pass filter for 146 MHz
Werner: I EMPHATICALLY agree with the advice to turn down the gain. Improving your IMD will provide much more bang for the effort than trying to find a filter with a loaded Q of over 100 at 2m. An easy way (if imperfect) to get it right is to maximize the RF gain in the Icom radio and then adjust gain down until the preamp-on noise is only SLIGHTLY higher than preamp off. This gets you enough gain to let the preamp set system noise figure, although you still have a bit of excess. Good luck and please share your results! 73, Jim wb4...@amsat.org On 4/27/2011 1:15 PM, Werner Kullmann, HB9BNK wrote: What an amazing responsetime on this list ! (post the question, go shopping, find valuable advice !) thank you all very much ! It will be a few days, until I can get at the antenna. I will report my findings here Thanks and 73 Werner, HB9BNK ___ 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: Yaesu 847 vs. Icom 910
I have a 910, a friend has an 847. We typically use both at Field Day. I think the 910 is a better satellite radio. Good luck! 73, Jim wb4...@amsat.org On 2/16/2011 12:46 AM, Phil wrote: On Tue, 15 Feb 2011 12:00:41 pm zach hillerson wrote: I am finally in the market for a base station radio for satellites. I should mention that I am also planning to install a wire dipole in the backyard for HF work, but convenience shouldn't be the reason to buy/not to buy a radio. It seems that the Icom 910 and Yaesu 847 are the two main transceivers in base use for satellites. I know some folks are using the Kenwood TS2000, bu i t I understand thatit has a birdie that makes operation on a couple FM satellites challenging. I am hoping to work both the linear and fm birds with this transceiver. Is there a BB favorite? Have I just opened up a bad can of worms? I just want to make sure that I am purchasing the proper parts the first time Hello Zach, I've owned an FT-847 for the past eleven years and although it has served me well (mostly satellite use but some HF operation as well) it has several annoying birdies which are most noticeable the 144 MHz band. One particularly annoying S7 birdie appears around 145.9 MHz which makes communication via VO-52 difficult at times. Other that that it has been a very reliable radio. ___ 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] Nova for Windows question
All: In preparation for Echoes of Apollo event this spring, I'm resurrecting Nova and rotors, etc. Interesting anomaly. Background: My desktop has Nova version 2.1v My laptop (which will be used for the event) has Nova version 2.2b First issue is why are they different; don't remember -- though all was the same. More important: When I launched Nova on the laptop, I had no views configured. Which I attributed to a new install following a new hard drive a year or so ago, but now I'm not so sure -- something may be corrupted. Copied the views file from desktop to laptop and most was well. HOWEVER, could not find moon or AO-51. Rebuild data base (IAW help file and FAQ) and found Echo (AO-51), which I can drag into my current view and track. Moon shows up on list of celestial objects, but I'm not allowed to drag it into the tracking list -- get an error message about no keplerian elements available. (Which is no surprise; I think I recall that Nova uses a different algorithm for moon and sun.) Question: What do I have to do to be able to track the moon in Nova for Windows 2.2b? Thanks and very 73, Jim wb4...@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: SSB pre-Amps
I use them as well, and REALLY like them. At Field Day, for simplicity, I power them up the coax from the IC910. Home station, they get separately powered through a sequencer. 73, Jim wb4...@amsat.org On 1/30/2011 4:31 PM, Dave wrote: Hi group- Is anyone using the SSBUSA-2000 and SSBUSA-7000 pre-amps? How are you powering them? Thanks, Dave KA0SWT _ No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1204 / Virus Database: 1435/3412 - Release Date: 01/30/11 ___ 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
