Re: [Flexradio] Placing a order for kits
Don Tony Parks - KB9YIG offers both SoftRock and Delta-44 interface kits. He handles sales directly via E-mail: Contact him at: [EMAIL PROTECTED] Eric2 - AA4SW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Donald Gaines Sent: Friday, July 21, 2006 10:22 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Placing a order for kits I am confused! I want to buy two soft rock radio kits. And if is there a kit that allows a less bulky connection to the D44 sound card, I want one of those also. I have purchased an SIR and a number of other items and you should my credit card and address on file. My problem is I haven't figured out just who is selling what! Can you decode it for me? Thanks Don Gaines, N9SOY -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060721/37c25cc7/attachment .html ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
[Flexradio] Wav to MP3
Anyone know of a Wav to MP3 converter that will recognize WAV's produced by the Flex? These are not the IF wav's, just regular post processed WAV's recorded with the SDR. I've tried wavemp3.exe, WaveEdit, and Nero Wave Editor, and none of them know how to handle these particular WAV's. They play fine in the Media players, but none of the editors or converters can read them. Thanks, Brian / w5ami ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
Re: [Flexradio] Wav to MP3
Have you tried the free Audacity? http://audacity.sourceforge.net/ Mike - AA8K Radio Station W5AMI wrote: Anyone know of a Wav to MP3 converter that will recognize WAV's produced by the Flex? These are not the IF wav's, just regular post processed WAV's recorded with the SDR. I've tried wavemp3.exe, WaveEdit, and Nero Wave Editor, and none of them know how to handle these particular WAV's. They play fine in the Media players, but none of the editors or converters can read them. Thanks, Brian / w5ami ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
Re: [Flexradio] Wav to MP3
Just did and it works!! Thanks Mike! Problem solved... On 7/22/06, Mike Naruta [EMAIL PROTECTED] wrote: Have you tried the free Audacity? http://audacity.sourceforge.net/ Mike - AA8K Radio Station W5AMI wrote: Anyone know of a Wav to MP3 converter that will recognize WAV's produced by the Flex? These are not the IF wav's, just regular post processed WAV's recorded with the SDR. I've tried wavemp3.exe, WaveEdit, and Nero Wave Editor, and none of them know how to handle these particular WAV's. They play fine in the Media players, but none of the editors or converters can read them. Thanks, Brian / w5ami -- There is nothing more uncommon than common sense. -- Frank Lloyd Wright ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
Re: [Flexradio] Strange hardware behaviour
Well, it's been an interesting day. We had a blockage in the bathroom which involved dismantling a fair bit to get at the pipe run. It was hot today as its been for several weeks, hitting 30 plus so maybe it was the heat but while doing this boring mucky task I decided to dual boot my main machine with Ubuntu to make sure the problem was a software one as it was looking increasingly like hardware... I knew it would break stuff but I hit the buttons anyway and sure enough my dual boot machine turned out to be a half boot machine. It would half boot Windows and then reboot ad-infinitum. Oh , I just knew it had trashed my RAID array and only written to one of the discs. I pulled the power from one disc and sure enough I had a dual boot machine on one disc. Not sure I'm brave enough to try and rebuild the other half just yet. Having got the new Ubuntu up to scratch and installed my software it works fine. I guess my parallel port on my other box is not up to the job. Bob On Fri, 2006-07-21 at 09:18 -0700, Jim Lux wrote: At 07:35 AM 7/21/2006, FlexRadio - Eric wrote: This is characteristic of the DDS dropping out. And, what Eric forgot to mention, often from the DDS overheating... Jim ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
[Flexradio] Installing Ubuntu on an existing Windows PC
If you are interested in installing Ubuntu on an existing Windows PC, here is a great link that describes in detail the process of resizing your existing NTFS partition, explanation and description of how to setup your Ubuntu ext3 partitions, setup a partition that can be shared by Windows and Ubuntu and setting up GRUB to dual boot your system. http://users.bigpond.net.au/hermanzone/ Enjoy! -Tim --- Tim Ellison mailto:[EMAIL PROTECTED] Integrated Technical Services http://www.itsco.com/ Apex, NC USA 919.674.0044 Ext. 25 / 919.674.0045 (FAX) 919.215.6375 - cell PGP public key available at all public KeyServers Skype: kg4rzy ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
Re: [Flexradio] Birdie at 28435
Jim Lux wrote: At 05:41 AM 7/21/2006, Robert McGwier wrote: The correct approach for the SDR-1000 is straightforward to state, and will require some pain to get it done. In this case again, the 48 kHz minimum is our friend. We could put our last IF anywhere in that 48 kHz. We have chosen 11025 +/- spur reduction calculation because Gerald chose 11025 in the original VB console and we just didn't change it. The watch receivers and the softrock receivers and other similar ones can tune anywhere in that band. So we have two parameters to set to get to the last signal to process, the DDS frequency and the software oscillator. The correct approach is to map all spurs and find the DDS frequency/software oscillator pair that eliminates spurs from in band. Since we have some DC and/or 1/f noise and a few other factors, we do not actually have 48 kHz, we have probably more like 40 kHz. That is still PROBABLY more than enough to never have a spur in band. This will require real work, and a serious study of the appropriate strategy, but it can be attempted. I wouldn't be quite so sanguine that one can find a combination of DDS frequency and digital LO that guarantees no spurs in an arbitrary bandwidth (hey.. if we figured it out for 300 Hz,then people will whine about 2.3 kHz BW, and if we get it there, then they'll say, but what about my 10 kHz AM hifi signal, etc.). Probably does still mean probably. I agree it will require study. That said, there's a handy research project that someone might want to take on. There's several well known ways to calculate what the spurs from the DDS are; here's a great paper out on the web for this.. I'll look for the reference, but I'm sure the link has been posted here, and you could probably also google DDS Spur Simulation Matlab and find it. Then, it's just a matter of setting up a brute force search program to scan through the entire HF band in sufficiently small steps to find preferred DDS frequencies There are also analytical ways to attack the problem (since the DDS spurs are algorithmic in nature). Once you know where the problem areas are, one can come up with a good way to implement it in the user software (that is, a 100 GB lookup file with 0.1Hz granularity is probably NOT an optimal strategy). The other thing that will almost certainly be needed for such a strategy (and which should actually have a higher priority) is to put in a decent calibration system. If you start pushing the IF around, the odds of the I/Q imbalance biting you is much greater, for two reasons: 1) The I/Q imbalance over frequency of the DDS output 2) The I/Q imbalance of the audio path. Thanks for providing the segue. Here we agree with no reservations at all. Last week I discovered what my difficulty has been in using the impulse generator in the test panel. It is entirely my fault because I asked Eric to put it in, he did it, and I did not look in sufficient detail at the generation algorithm! When I requested 100 pulses, the pulses were fired on the console_GUI thread, and too rapidly to be accommodated. Some were jammed next to each and other various horrors. It looked pretty bad.On a whim, I dropped it to 1 pulse. That pulse looked great. I increased it 1 pulse at a time until I got a double pulse. I then realized what needed to be done, and Eric worked it out. The pulses are strong enough not to miss and it might work with one. But, it would be nice to use more than one for a little better look but it would be best if this were nearly a pulse train. Eric put the pulse generation on its own thread, at very high priority, and it is very clean now. I can now say that we will be able to mitigate deformation of the impulse response by the circuitry. AGAIN, this will require some hard work. It will require an efficient strategy after the initial algorithm has been proven. Once this is done, we should move immediately to implement NB3 using this impulse response to try a subtractive impulsive noise mitigation scheme. both of these paths have reactive components and strays as well as active devices, and the more you move around, the more likely it is that a simple single point cal (as currently used) won't work. However, there's also an interesting note of realism that should be injected here.. Most signals that are transmitted are hardly pure tones from a hydrogen maser with -150 dBc phase noise 10 Hz out. That is, the NF of the transmitter's PA is none too wonderful, not to mention various and sundry distortions that are also introduced. While reducing interference from reciprocal mixing, etc. that comes from LO spurs is useful, at some point, those spurs drop below the noise floor of the signal you are receiving. I agree with this. I think we are only trying to avoid, to the extent possible, the most vexatious ones you
Re: [Flexradio] Installing Ubuntu on an existing Windows PC
In general the 2.6 Kernel does not support RAID unless you have a real RAID controller. Meaning here , the inexpensive RAID controllers (like IWill, Adaptec) do it with software not hardware and Ubuntu or any other 2.6 Kernel Linux will hose you array if you try to install it. The first clue is that is sees the two drives as individual drives instead of one combined container. On Saturday 22 July 2006 16:14, Tim Ellison wrote: If you are interested in installing Ubuntu on an existing Windows PC, here is a great link that describes in detail the process of resizing your existing NTFS partition, explanation and description of how to setup your Ubuntu ext3 partitions, setup a partition that can be shared by Windows and Ubuntu and setting up GRUB to dual boot your system. http://users.bigpond.net.au/hermanzone/ Enjoy! -Tim --- Tim Ellison mailto:[EMAIL PROTECTED] Integrated Technical Services http://www.itsco.com/ Apex, NC USA 919.674.0044 Ext. 25 / 919.674.0045 (FAX) 919.215.6375 - cell PGP public key available at all public KeyServers Skype: kg4rzy ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com -- Cecil KD5NWA www.qrpradio.com ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
[Flexradio] Installing Ubuntu on an existing Windows PC
I took the easy/chicken way out of installing Ubuntu. I installed a second hard drive to keep all things separate. In the past I have installed Suse Linux and Xandros Linux. Ubuntu is by far the most slick I have ever used. For my machine, a home brewed Asus A8V mobo with an Athlon FX-53 processor, I could not install release 6.06 (Dapper Drake) directly because of a bug in the install program. Instead, I had to install release 5.10 (Breezy Badger) and then do an upgrade to Dapper Drake over the web install/upgrade. The upgrade via the web was a cinch and very slick. All of my hardware is supported without a glitch. I will probably build a separate computer for my SDR 1000 which will be ordered probably in October (as soon as I get finished paying for the latest semester tuition for my youngest daughter). The SDR 1000 computer will probably have 2 HDD's, Intel E6600 duo 2 processor, if the processors pan out, 2 meg RAM, cheap video card, 750 meg Zip drive and DVD+- RW with CD ROM with R/RW. Only rarely will this computer be allowed on the net for updates. Most updates will be by sneaker net from my other PC across the room. There will be no permanent network connection for the SDR 1000 computer. It will dual boot Win XP and Ubuntu Linux. I will run several digital mode programs and feed them from Dragon Dictate as much as I can. For some unknown reason, Dragon Dictate runs much faster on an Intel processor than on an Athlon FX-64. Eric W. also wrote me that Intel processors do a better job with CW on the SDR 1000 than Athlon processors. Given the recent changes in the CW code, this speed advantage may have disappeared. I will watch the web and wait. Brad A. Steffler KE4XJ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
