Re: [Flexradio] SDR1000 for sale
** SOLD ** Thanks for your interest. 2008/9/21 Larry Gadallah [EMAIL PROTECTED]: FOR SALE FlexRadio SDR-1000 * 8-pin Mic connector, June '06 build * 100 W PA * USB-Parallel adapter * All original cables * Software and documentation on CD-ROM $725.00 + shipping -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 917E DDB7 C911 9EC1 0CD9 C06B 06C4 835F 0BB8 7336 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] SDR1000 for sale
FOR SALE FlexRadio SDR-1000 * 8-pin Mic connector, June '06 build * 100 W PA * USB-Parallel adapter * All original cables * Software and documentation on CD-ROM $725.00 + shipping Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 917E DDB7 C911 9EC1 0CD9 C06B 06C4 835F 0BB8 7336 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Computers and OS for Flexradios
Alan: I haven't tried it myself, but my understanding is that the procedure described there is used for setting/resetting the firmware password by means of the Open Firmware Password application, which is available for both PowerPC and Intel Macs. The difference between the implementation of the firmware in the two is that the PowerPC Macs use the Open Firmware firmware and the Intel Macs use the Intel EFI firmware. The control of the password is accomplished using the same OS X application in either case. About 2/3 of the way down the page, the following statement appears: On any computer capable of firmware password protection (including Intel-based Macintosh computers), follow these steps:. I interpret this to mean that Intel-based Macs can be configured with firmware passwords. Cheers, On 31/07/07, Alan NV8A [EMAIL PROTECTED] wrote: I had read reports (by Mac enthusiasts) that this is unreliable, unsupported, could corrupt passwords, and could void the warranty. I am still confused after reading the information at the URL in your message. In one place it says: All Intel-based Macintosh computers support firmware password protection, but the list of machines that follows does not mention the MacBook family. Then the last sentence on that page is: Note that Intel-based Macintosh computers do not use Open Firmware. These steps do not apply to Intel-based machines. 73 Alan NV8A On 07/31/07 01:32 pm Larry Gadallah wrote: Intel-based Macs do have a BIOS password feature; They use Intel's Extended Firmware Interface (EFI) for their BIOS, but an OS X application is required to setup and manipulate the password for the firmware. See http://docs.info.apple.com/article.html?artnum=106482 Our son just got a MacBook Pro for college (a notebook is a requirement for the program in which he is enrolled), and I've had an opportunity to play with it a little. It certainly is cool, and some of the ways in which the Mac differs from IBM-compatibles I probably could get used to, but the big downside of the Mac (apart from cost) is security, although that may not matter if we're using it only for our radios or other hobby purposes. If you interrupt the boot sequence (look it up), you get to a Unix-like prompt with root/Administrator privileges, from which you can change passwords, delete accounts, and create new accounts with Administrator privileges. There is no equivalent -- at least in a MacBook -- of the typical PC's password protection in the BIOS that can be set to prevent the machine being booted at all. I can't see how a business could possibly rely on such a machine, especially when most of the backup solutions aren't -- as admitted even by Mac enthusiasts. snip -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B ___ 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 Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] New PCs now sold with Vista and notXP-Implicationsfor SDR-1000?
Wow, is it just me or is it getting hot in here? ;-) On 3/8/07, Larry W8ER [EMAIL PROTECTED] wrote: BinLaden uses a Mac and OSX! Mark Amos wrote: Well, all I can say is that if God had meant us to use Mac's, Steve Jobs would be working for Microsoft - and he'd be a Republican!! (I think I covered them all!) 73, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B ___ 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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] New PCs now sold with Vista and notXP-Implicationsfor SDR-1000?
OK, now we have to post the obligatory canonical OS joke: http://www.zyra.org.uk/os-air.htm -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B ___ 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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] FA-66 and EMI?
I haven't checked transmit, since I'm only connected to a random wire, without a tuner or a good ground (due to second floor shack). The last test I did kind of confirmed that the junk is coming from the SDR, because at 10 Mhz, if I only connect the FA-66 to the PC, the screen looks exactly as illustrated on the Flex site: two humps on the left and right sides, and the middle is flat. As soon as I connect the SDR (without an antenna), I get a broad hump centered just below 10 Mhz, and I hear noise and splatter (sounds like bleedthrough of BCB stations). I'm going to try bonding the SDR and the FA-66 next. Maybe it's some kind of ground loop. On 1/4/07, Lee A Crocker [EMAIL PROTECTED] wrote: Can you transmit? I had a similar problem when I started with the FA-66 and it turned out to be a problem in the SDR-1000. I sent it back and they replaced 2 resistors and a choke, but they didn't list exactly what resistors and choke they replaced. Once I got it back the FA-66 tuned up perfectly. 73 W9OY __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.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 Knowledge Base: http://kb.flex-radio.com/ -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B ___ 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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] FA-66 and EMI?
Ken: That is the first thing I tried. I started powering the FA-66 from it's own wall-wart, then when I saw the interference problems, I tried powering it off the bus, but it made no difference. I also removed all the TX-related cables, but to no avail. Cheers, On 1/4/07, Ken N9VV [EMAIL PROTECTED] wrote: Hi Larry, I had noise from my PC Firewire port. I had my FA-66 powered from the PC Firewire to 6-pin cable. I changed to the wall-wart external power for my FA-66 and it quieted down and is doing a great job. Could that be your FA-66 noise source? Larry Gadallah wrote: Has anyone seen this before? I can provide screen shots and wave files if anyone is interested. Any ideas what might be behind this? Is the FA-66 more susceptable to EMI, or do I have a defective one? Thanks es 73, BK de ken n9vv -- Flex-Radio Customer Support (1-512-250-8595) --- The answer to your question can be found in the wonderful new Knowledge Base Please use it frequently http://kb.flex-radio.com/ -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B ___ 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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Birdie at 28435
Eric et al: I'd be interested to know what the general procedure is for dealing with spurs that show up at inconvenient frequencies too. I listen a lot to HF aero channels, and they can't QSY :-). Should the spurs move if spur reduction is toggled? I've been lucky on some frequencies to find that I can tweak the bandwidth in order to filter out the spur, but this doesn't work too well if the spur is at, say, +1000 Hz :-). Cheers, On 7/20/06, Eric Wachsmann [EMAIL PROTECTED] wrote: Jerry, What happens when you turn the Spur Reduction off? Does the spur move? What mode is this group running? If it's not CW, try turning on the ANF (Automatic Notch Filter) to cut the birdie out. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Jerry Harley Sent: Thursday, July 20, 2006 1:20 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Birdie at 28435 28435 is a pet frequency of a group centered around Philadelphia (everyday at 1pm til 2pm). I have a birdie that is 2500 above 28435 only if i have the preamp on med or high. If i adjust the frequency to 28434.9 or 28435.1 the birdie goes away. Spur reduction has a small effect on the birdie. I know this is a minor problem and probably I'm the only one it is going to bother. Most of the time I stay with preamp in low, but when our DE stations come in I have to turn it up or I am unable to copy. Please put this in the to be looked at bin.wa2tti Jerry ___ 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 -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060721/ed998883/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
Re: [Flexradio] Split Frequency???
Hi Cliff: I had this problem when I first got my SDR. I eventually resolved it, but what's odd is that I'm not sure what fixed the problem. The things I did were as follows: - Make sure audio I/Q channels have the correct polarity - Perform image suppression calibration - Add RFI suppression to all of the cables (power/audio/parallel/USB) - Reloaded USB cable driver (I'm using the Parallel-USB cable) - Disconnect Presonus Firebox, Shutdown PC, turn on radio, reboot PC, reconnect Firebox, startup PowerSDR Sometimes I'd see the same problem, and I'd have to repeat the last step above a few times. Now about 9 times out of 10 when I startup the radio it works OK, but sometimes I have to go through the shutdown everything and start it up again routine a few times. Another thing I should mention is that I've noticed sometimes that when I start up, the receiver isn't working at all, I can't tune, etc. I go into the General setup tab in PowerSDR and I see that the Parallel-USB cable checkbox has been cleared somehow. I reselect it and the radio comes to life immediately. Cheers, On 6/28/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Message: 5 Date: Tue, 27 Jun 2006 19:06:57 +0100 (BST) From: Cliff G3NDC [EMAIL PROTECTED] Subject: [Flexradio] Split Frequency??? To: FlexRadio@flex-radio.biz Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=iso-8859-1 I have a strange fault on my SDR, the frequency of received signals seems to be offset by about 57.8 KHz. For example a signal detected on my Yaesu FT1000 Rx is shown as 14.137460MHz but appears on the SDR at 14.079600 MHz This difference in frequency is substantially constant across the band and always the same way round. ie FT1000 higher than the SDR. I think the problem arose following a Microsoft update but I can't be sure. Any ideas please Cliff -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex- radio.biz/attachments/20060627/da5de278/attachment.html -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060629/93abfe92/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] Squelch Question
At the risk of asking a silly question (directed mainly to Bob and Frank): How practical/likely is it to develop a syllabic rate squelch for the SDR-1000? The existing squelch seems to be based strictly on RF energy, which works well sometimes, but many times on HF, this doesn't work well because of QRN, QRM, etc. My understanding is that a good syllabic rate squelch can reliably detect human voices that are barely audible in the noise. This makes monitoring an HF SSB channel a pleasure instead of a chore. I spent some time about six months ago trying to research what would be required to do this in DSP on a soundcard, and there is plenty of information about how to build such a squelch using analog components, but little or nothing about how to do it in DSP. It seems to me that it would be fairly simple, given the tools and infrastructure that are already there in PowerSDR/DttSP, but I know little to nothing about DSP programming. What do you think? Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060619/15ff6ff4/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
Re: [Flexradio] Setup problem
Hi Ed: On 6/6/06, Ed Popp [EMAIL PROTECTED] wrote: Larry, I'm sorry to hear that your having problems with the SDR-1000. Lets try a couple of things and see if we can determine what or where the problem is. Sounds like there is some kind of power short. First I assume that you don't have time to turn on the console display before the fuse blows. I did have the console running, and I had walked through the setup wizard and I got to the point where I tuned to a local MW station and got -145 dBm, so I knew something wasn't right. If you have a 50 ohm dummy load connect it to the output of the radio. Then have the SDR Console display displayed on your computer. On the left hand of the display there is a small window labeled PWR set this to zero. Apply power and watch your power supply to see if excessive current is being drawn. If so, turn off power. Take the cover off the radio and see if you can see anything concerning the main power line into the radio. There is a 25 AMP fuse next to the power terminations on the amplifier board. There is a short somewhere before that 25 amp fuse if it's OK. If there is no excessive power drawn turn on the display console and listen for some relay clicks. If all is well up to this point key the transmitter. There should be 0 power out. I also turned the power down on the console to 10, not to 0, but all along I've never heard any relay clicks in the SDR, nor had I seen any light from the power switch LED. When I get home, I will take the cover off and pull the fuse for the HF PA and see if that makes any difference. I'll also try and take an ohmmeter reading across the power terminals. That should indicate if there's a short. Let me know how this goes and we can go from there. OK. Thanks for the advice. I'm wondering whether this problem is mechanical or electrical in nature. Since I just got the radio, I wouldn't be too concerned if some wire or connector shifted in transit and was shorted, but I'm more worried about the stories I've heard about oscillation due to various wiring faults in the PA. Since the problem seems to be related to the PA and is independent of where the power switch is, it seems to be the leading culprit. I feel a little sheepish now, since I was originally going to buy a 1 W unit and upgrade the PA later, but I changed my order to the 100 W PA unit :-(. Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060606/cea1b33c/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
Re: [Flexradio] 16 versus 24 bit audio
Message: 39 Date: Sat, 20 May 2006 16:09:52 - From: Peter Martinez [EMAIL PROTECTED] Subject: Re: [Flexradio] 16 versus 24 bit audio To: Flex Reflector FlexRadio@flex-radio.biz Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response From G3PLX: Sami is right. You CAN recover a signal from noise by narrowing the bandwidth, so if my signal was level with the noise in 24kHz bandwidth, I could filter it to a narrower bandwidth (in software) and improve it's SNR. I've been wondering about this lately; Isn't this getting close to what the definition of process gain is? Incidentally, Analog Devices has some excellent white papers that go into the details of the tradeoffs between sensitivity, dynamic range, resolution, etc. Definitely recommended reading. But that's true regardless of the number of bits in the raw data. So long as we have at least half an lsb of additive noise to dither away the quantisation problem, we can always gain SNR by reducing the downstream software bandwidth. Any more added noise at the front end than this only makes things - well - er - noisier. The noise power calculation I did earlier shows that there is ALREADY about the right amount of noise inherent in the physics to get the dither optimum for a 24-bit ADC at 0dBm. If there are cards with more noise than this, it's probably because the designer couldn't get it any lower for the price, not because he chose to add more noise for some subtle reason. To take Jim's points, I have only so far measured the rms noise with no input, and not yet looked to see if there are any clues in it's spectrum - these things would take a lot more time. Clock jitter wouldn't explain what I see (an output with no input) although it would certainly cause noise in the presence of a large pure tone. I haven't tried that yet either. It would be interesting to see the spectral characteristics of the noise. Let me close this topic before Phil accuses me of cruelty to dead horses. Before I aquired a 24-bit card, I honestly believed that 24-bit cards would be 8 bits better than 16 bit cards. When I did get one recently, I was surprised to find this wasn't the case. Jim is right. 24 bit cards may only be slightly better than 16-bit cards. I have learned something this week. Seems to me that the marketing folks take the number of bits in the ADC and run with it. A 16 bit card is only 14 bits, and a 24 bit card is only 18 bits, so the 24 bit card is 4 bits better than the 16 bit card. Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20060520/eadbfa34/attachment.html ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
