Re: [Flexradio] Repost - Multiple SDRS one CPU
Whatever scheme the USB approach uses, it should accomodate the pervasive use of USB hubs (I think you'd need this anyway, because most PCs actually have a hub inside the box anyway). Windows assigns a Device Instance ID for every USB device you plug in. Even for the same device the ID is different depending on which port it's connected to. For the SDR-1000 USB adapter the ID looks something like this: USB\VID_0547PID_2235\51E3499EF01 Plugged into another port: USB\VID_0547PID_2235\51E3499EF02 In both examples the device was connected to the same USB host controller / root hub, so only the last number has changed to indicate the different port. I don't have any external USB hubs to test with, but I assume the same principle applies, and you get a unique identifier for every port in your computer and USB hubs. You can use Windows Device Manager to see ID's for different devices: http://kotisivu.dnainternet.net/ahti/sdr-1000/DeviceInstanceId.png Do USB devices have internal serial numbers? There's no serial number in this case. The Cypress EZ-USB is an EEPROM-less device, and we decided not to put in an external EEPROM either. Having a unique serial number for an adapter-type device is generally not very useful. We're usually interested only in the hardware the adapter is connected to - not the identity of the adapter itself. If the USB interface were built in the SDR-1000, then it would be a good idea to have an EEPROM to store information. Not only a serial number, but also configuration and calibration data for that particular unit. 73, Sami OH2BFO
Re: [Flexradio] Repost - Multiple SDRS one CPU
Sami Aintila wrote: If the USB interface were built in the SDR-1000, then it would be a good idea to have an EEPROM to store information. Not only a serial number, but also configuration and calibration data for that particular unit. 73, Sami OH2BFO Serious thought should be given to this for the SDR 2000. Bringing (especially) the PA data along is a major headache when upgrading. It also caused trouble for us in Belize where we switched rigs and had to recalibrate everything (and, there are multiple SDR owners in the world, too, so it isn't just the not-so-common DXpeditioning or contesting). The PA data actually goes with the hardware, so it ultimately ought to be stored with it. In lieu of that, serious thought should be given to breaking out some of the more serious data separately. This data base import function seems eternally fragile. Perhaps the really critical data, especially including the PA amplifier settings, should be exported into XML or something. Maybe the critical voltage value for the sound card, too (especially useful for those that set it manually). I've had enough trouble with the whole what happens to the DB when I upgrade thing that I never reuse one anyway. It always seems safest and best to re-run the wizard, but that means all the PA settings go in by hand (and, also, I suppose, equalizer settings and so on). One cookie jar has always been a problem in software design. Too many eggs in one basket. But, the stuff that's directly tied to the hardware (but variable, such as also the postive/negative indicator on the 144 MHz card) probably ought to be exported/imported separately, at least optionally, because it almost never would be changed once set and there's no point in organizing the world so that people end up doing so. Stuff that's more like personal taste (e.g. equalizer settings) might be left off of this, since the idea would be that this would be read in separately at upgrade time, not any old time. Larry WO0Z
[Flexradio] CW
Im curious about how the CW function works. There are times when it works great and then The problem seems to be with the buffer. At times I can only type in characters during signal breaks. Other times I can type continuously. It doesnt seem to matter what the power level is nor the amount of text in the buffer awaiting transmission. Ive monitored the CPU usage through the Windows Task Manager, but I havent seen any indication that there is a correlation there. Im not fast enough to switch over to my keyer so I would like to figure out how to work around this- Any suggestions? Thanks, Richard KE5DLQ
Re: [Flexradio] price is a virus
As a follow-up to this, we have received virus messages internally that look like they came from flex-radio.com addresses. These are forgeries coming from someone else's machine that has our address in their address book. We strongly suggest that our customers use virus protection (avast is a good free choice) and always be cautious when you have received a binary attachment -- ESPECIALLY when it is from someone that you would normally trust. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Mike WA8BXN Sent: Saturday, February 04, 2006 12:06 PM To: FlexRadio List Subject: Re: [Flexradio] price is a virus Someone has worm_bagel.cl virus. ___ 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
Re: [Flexradio] Uncontrollable power output with 1.4.5 Preview 12
John, We are currently looking into a bug possibly in the ALC code section with the latest preview. We suggest turning the compander (CPDR) on and leaving it on (even with setting = 0) until we resolve this issue. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of John Belstner Sent: Saturday, February 04, 2006 5:53 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Uncontrollable power output with 1.4.5 Preview 12 Greetings, In upgrading from 1.4.4 I am seeing a drastic increase in power output with the same audio levels. Eric mentioned to me when I tried an earlier Preview that the drive chain was different in 1.4.5 but what I'm seeing with Preview 12 is the inability to turn the power down using the Windows volume control panel. With what I believe to be no drive (main, wave and line in volumes turned all the way down) the power output indicates over 200 watts PSK31. I immediately powered down of course. The power setting on the console was 30 W and using 1.4.4 that's exactly what I get regardless of what the audio drive is. I hope that brief incident wasn't damaging to the PA. It made the lights flash and the stereo speakers hum a bit though. Any ideas? Cheers, John ___ 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
Re: [Flexradio] Question on Searching Flex-Radio dot Biz
Bruce, Right now, probably the best approach is to use the Ctrl+F find feature built into your browser to search the archive. If you use a program like Thunderbird or Outlook, you can also search through your email folders. I have heard that Google Desktop is good with finding emails you can't seem to locate. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Bruce K3CMZ Sent: Saturday, February 04, 2006 4:00 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Question on Searching Flex-Radio dot Biz I am not able to find a way to search this list. If someone could describe how this is done, Please post! Thanks Much Bruce K3CMZ ___ 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
Re: [Flexradio] Echo on transmission
Echo issues can sometimes be traced to ground loops. How do you have your microphone plugged in? If you are going through the radio, you might try going directly into the soundcard. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of F6AUE Sent: Saturday, February 04, 2006 11:50 AM To: Reflector Flexradio Subject: [Flexradio] Echo on transmission I try to solve an echo problem on my transmission. On the report received from other stations my modulation seems good but there is an echo on it, it seems this echo varies sometimes. Is somebody already solve this problem ? I'm using a Delta 44 sound card. thanks 73 René ___ 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
[Flexradio] GPS and calibration
At 05:58 AM 2/6/2006, Robert McGwier wrote: There is nothing wrong with this at all if you know all of the pitfalls. I thought you were trying to take OCXO's and use them and were not using the 200 MHz signal. OOOPS. The GPS solution can be subtle. If you have a late model ($100 or so) timing receiver, you can get the sawtooth error down to 25 counts error per counting period. That is on a good TIMING gps receiver. The rest can have sawtooth errors that are over in several msec territory. There's a whole raft of reasons why you don't want to calibrate using a single 1 second epoch of the GPS: the 50-100 ns jitter (i.e. 0.1 ppm) in the 1pps being but one of them. The virtue of having a counter in the FPGA that free runs, and you use the 1pps to latch it, then send the data to the PC, is that all manner of clever (or not so clever) schemes can be used to manage the data, and it's just software in the PC, where it's easy to change. The key is the no dead time counting. For folks that happen to have a high quality 10 MHz source around, one would want to run that into the FPGA to generate the 1pps clock, rather than the GPS. My gut feel is that you're better off using a decent (i.e. low phase noise), but drifting, 200 MHz oscillator in the SDR and measuring it against your nice 10 MHz, (to correct the dial readout) rather than let the DDS try to multiply up the 10 MHz, but that's not based on any analysis. As for measuring the actual DDS output, given that the output frequency is derived arithmetically by logic gates (presumably error free) from the reference, if you measure the reference, you're also measuring the output frequency, and it makes life easier that you have to measure something at only one frequency, rather than over a wide band. Single frequency measurements are always better than wideband (match isn't as important, you can use filters, the uncertainty of the measurement is always the same, etc.). Jim
[Flexradio] FlexRadio at Orlando Hamcation this weekend
Hello all, If you are planning to attend the Orlando Hamcation this weekend (Feb. 10-12), please drop by the FlexRadio booth. We would love to shake your hand. Also, please tell your friends to come see us. 73, Gerald Gerald Youngblood, K5SDR President FlexRadio Systems 8900 Marybank Drive Austin, TX 78750 Ph: 512-250-8595 Email: [EMAIL PROTECTED] Web: www.flex-radio.com
Re: [Flexradio] CW
I'm curious about how the CW function works. There are times when it works great and then. The problem seems to be with the buffer. At times I can only type in characters during signal breaks. Other times I can type continuously. It doesn't seem to matter what the power level is nor the amount of text in the buffer awaiting transmission. I've monitored the CPU usage through the Windows Task Manager, but I haven't seen any indication that there is a correlation there. I'm not fast enough to switch over to my keyer so I would like to figure out how to work around this- Any suggestions? Thanks, Richard KE5DLQ ___ How are you doing CW? Through the new keyer? Old keyer? A third party program like MixW? The answers you get will vary depending on how you're doing it. CW is a bit of an adventure on the SDR. However, it can be made to work very effectively. An old fashioned iambic key plugged right into the rig with the new keyer can, with a little practice, be made to be quite effective. Tremendous work has been done to make that possible and usable in the most challenging and unfriendly software environment imaginable. It's not perfect, mind you, but I have been able to get a lot done with it and, with the rest of the rig's advantage, would still be my preferred CW platform over any rig I've owned or used. Lately, I've worked DXCC on 80 meters, all CW, and worked the Palmyra DXpedition, twice, on 80 and 40 with it, for instance. Won many a large scale pileup. And so on. Run two different HF amplifiers, too. Used to use the text-based facilities in the old PowerSDR Console keyer, too. It's still there, I just don't use it now. Was able to work DX effectively, even including some pileups (harder there because I mostly used the memory keyer, but you can't have all canned responses, realistically, for that). Have not used 3rd party code much. MixW seems to echo when I try it. But, I'm behind a few ECOs, too. Larry WO0Z
Re: [Flexradio] Problem to adjust sidetone level with preview 12
Marc, What soundcard are you using? Unless you are using one with multiple stereo outputs, you are seeing the limitations of a consumer card. Basically, with only one output, we have to share the output in terms of output power and monitor volume. This means the more power you put out, the louder the volume on the monitor (very annoying). When we switched to professional cards (like the Delta 44 and the FireBox), we set it up so that one set of outputs would go to your speakers for the monitor, and one would go to the radio. This allows us to independently control the monitor volume (AF) and the radio power (PWR). If you are using one of our professional cards and are still having trouble, let us know. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Marc Franco Sent: Monday, February 06, 2006 12:38 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Problem to adjust sidetone level with preview 12 Hi all, I haven't been able to adjust the sidetone level on CW with preview 12 and the new keyer. It seems to be fixed at one particular level. Sometimes this can be annoying, particularly using headphones. Am I doing something wrong, or is it really a bug? Thanks, Marc N2UO __ 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://mail.flex-radio.biz/pipermail/flexradio_flex- radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
[Flexradio] searching the list
Here is what I found out about making mailman have a searchable archieve http://www.python.org/cgi-bin/faqw-mm.py?req=showfile=faq01.011.htp Lee W9OY __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: [Flexradio] searching the list
This is great info. Does anyone have experience with any of these options? Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Lee A Crocker Sent: Monday, February 06, 2006 2:58 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] searching the list Here is what I found out about making mailman have a searchable archieve http://www.python.org/cgi-bin/faqw-mm.py?req=showfile=faq01.011.htp Lee 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://mail.flex-radio.biz/pipermail/flexradio_flex- radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
Re: [Flexradio] FCC equipment authorization
Hi Phil, The following is a direct quote from an email sent to me by Ed Hare, W1RFI, on December 5, 2002 regarding my questions on Part 15 rules as applied to amateur radio equipment. Ed is the ARRL's laboratory manager and heads up much of their work on BPL. He also confirmed this at the time with Chris Imlay, chief FCC counsel for the ARRL. Ed stated in his email, Part 97 equipment does not have to be FCC Certificated, with the exception of HF amplifiers. Much of the VHF equipment that we see with FCC ID numbers is also a scanning receiver, so needs to be Certificated on that basis. If this is a Part 97 transmitter, and do note that a number of them do indeed transmit somewhat outside the ham bands, no Certification would be necessary. 73, Gerald Gerald Youngblood, K5SDR President FlexRadio Systems 8900 Marybank Drive Austin, TX 78750 Ph: 512-250-8595 Email: [EMAIL PROTECTED] Web: www.flex-radio.com -Original Message- From: Philip M. Lanese [mailto:[EMAIL PROTECTED] Sent: Friday, February 03, 2006 7:14 PM To: Gerald Youngblood; 'Jim Lux'; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] FCC equipment authorization Gerald Jim The SDR-1000 may require certification as a Part 15 Class B unintentional radiator because of it's connection to computing equipment, its use in home environments, the transfer of digital control data back and forth between a computer and devices within the SDR that the FCC may interpret as digital and/or auxiliary computing equipment. FCC Part 15 Subpart B is for unintentional radiators. The category of unintentional radiators includes a wide variety of devices that contain clocks or oscillators and logic circuitry but that do not deliberately generate radio frequencies emissions. Among the common unintentional radiators are personal computers, peripherals, receivers, radios, TV sets, and cable TV home terminals. FCC Part 15 Section 15.101 has a very informative table for unintentional radiators. Two levels of radiation and conducted emissions limits for unintentional radiators are specified in FCC Part 15 Subpart B. The two levels are Class A digital devices, the higher less strict limits, and Class B digital devices, the lower more strict limits. Manufacturers are encouraged to meet the Class B digital device limits. The TCB (Telecommunications Certification Board) personnel I spoke with today recommended very careful reading and interpretation of the Part 15 regulations (and cross references) as applied to digital devices. Phil, K3IB - Original Message - From: Gerald Youngblood [EMAIL PROTECTED] To: 'Jim Lux' [EMAIL PROTECTED]; FlexRadio@flex-radio.biz Sent: Friday, February 03, 2006 10:56 AM Subject: Re: [Flexradio] FCC equipment authorization Jim, The SDR-1000 is sold as amateur radio equipment under Part 97 FCC rules. The fact that is an intentional radiator for the amateur radio service places it under Part 97 and NOT Part 15 rules. The SDR-1000 is not type approved so it is NOT licensed for commercial use outside the amateur radio bands. 73, Gerald Gerald Youngblood, K5SDR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Lux Sent: Thursday, February 02, 2006 5:42 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] FCC equipment authorization Is there a FCC authorization for the SDR1000? Seems like it would be needed, since it's an intentional radiator, not just a bag of parts, etc James Lux, P.E.
Re: [Flexradio] searching the list
I am sure Scott would enable this if asked. I asked him about python based cgi when I set this up and had exactly this in mind. Bob Eric Wachsmann - FlexRadio wrote: This is great info. Does anyone have experience with any of these options? Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Lee A Crocker Sent: Monday, February 06, 2006 2:58 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] searching the list Here is what I found out about making mailman have a searchable archieve http://www.python.org/cgi-bin/faqw-mm.py?req=showfile=faq01.011.htp Lee W9OY _
Re: [Flexradio] FCC equipment authorization
At 01:16 PM 2/6/2006, Gerald Youngblood wrote: Hi Phil, The following is a direct quote from an email sent to me by Ed Hare, W1RFI, on December 5, 2002 regarding my questions on Part 15 rules as applied to amateur radio equipment. Ed is the ARRL's laboratory manager and heads up much of their work on BPL. He also confirmed this at the time with Chris Imlay, chief FCC counsel for the ARRL. Ed stated in his email, Part 97 equipment does not have to be FCC Certificated, with the exception of HF amplifiers. Much of the VHF equipment that we see with FCC ID numbers is also a scanning receiver, so needs to be Certificated on that basis. If this is a Part 97 transmitter, and do note that a number of them do indeed transmit somewhat outside the ham bands, no Certification would be necessary. Excellent.. that clarifies why lots of ham gear has FCC authorization, even though it's ham only. I note from other FCC matters that because the SDR1000 uses software to control the transmit frequency (and open source software no less) this might raise some issues in the future. Realistically, it's probably in the category of: as long as nobody complains... Jim...
[Flexradio] suggestion for release notes
It would be useful if the release notes/change log identified which modules changed, as well as just the change that was implemented. And, if the module had a header that had the change log for that module, it would be useful. release_notes.cs has lots of bug fixes described, but not in much detail. Example: //v1.4.4 Released 07/??/05 // // Bug Fixes: // // Issue: X2 TR Sequencing broken. // Fix:The sequencing was broken with the release of the new // hardware code back in Beta v1.3.3. The X2 pin 7 was // not switching before the delay. This has been // addressed and is now working as intended. // Reported by:W0VB // Coded by: KE5DTO BUT.. nowhere does it say which module was fixed. Is this in hardware.cs or hardware_v2.cs? And if so, which routine in hardware.cs? just a few extra words in the description of the fix can be very, very useful. If you're tinkering with some part of the codebase, and you want to know if some change in a new beta drop is going to have an impact on what you're doing, it's nice to at least know that it might have an effect. Jim, W6RMK
Re: [Flexradio] suggestion for release notes
Jim, In the near future, we will have an SVN server for the PowerSDR source. This will allow public access to view each and every revision to all source files (along with hopefully good notes about why the changes were made). I expect that this will help significantly with what you are asking for. On the other hand, the release notes are directed at our general customer base and there was a conscious decision made to keep them readable (to some degree) by non-developers. For this reason, very early on, we decided not to include which files changed per release note. I think SVN is the answer here. We will have to revisit what our release notes will look like after we have the SVN server as it will not help with non-developer customers. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Jim Lux Sent: Monday, February 06, 2006 4:31 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] suggestion for release notes It would be useful if the release notes/change log identified which modules changed, as well as just the change that was implemented. And, if the module had a header that had the change log for that module, it would be useful. release_notes.cs has lots of bug fixes described, but not in much detail. Example: //v1.4.4 Released 07/??/05 // //Bug Fixes: // //Issue: X2 TR Sequencing broken. //Fix:The sequencing was broken with the release of the new //hardware code back in Beta v1.3.3. The X2 pin 7 was //not switching before the delay. This has been //addressed and is now working as intended. //Reported by:W0VB //Coded by: KE5DTO BUT.. nowhere does it say which module was fixed. Is this in hardware.cs or hardware_v2.cs? And if so, which routine in hardware.cs? just a few extra words in the description of the fix can be very, very useful. If you're tinkering with some part of the codebase, and you want to know if some change in a new beta drop is going to have an impact on what you're doing, it's nice to at least know that it might have an effect. Jim, W6RMK ___ 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
Re: [Flexradio] Repost - Multiple SDRS one CPU
Eric Blossom [EMAIL PROTECTED] wrote: You *really* want to use something other than the default Cypress EZ-USB VendorID/ProductID/DeviceID. I agree using the default Cypress ID's is not very elegant, because it may conflict with other experimental devices some people may be playing with. No problems have been reported though. If you need a PID, let me know. I'll allocate one for you under the Free Software Folks Vendor ID. The SDR-1000 USB adapter was developed more or less as a byproduct of a research project we're involved in. The USB firmware and driver software are currently shared with this project, which isn't (and probably never will be) open source. If FlexRadio someday starts making radios with a built-in USB interface, it would then be appropriate to rewrite the USB software in a GPL-compatible way. But until that happens, we probably don't qualify for a PID under the FSF Vendor ID. 73, Sami OH2BFO
Re: [Flexradio] suggestion for release notes
At 03:18 PM 2/6/2006, Eric Wachsmann - FlexRadio wrote: Jim, In the near future, we will have an SVN server for the PowerSDR source. This will allow public access to view each and every revision to all source files (along with hopefully good notes about why the changes were made). I expect that this will help significantly with what you are asking for. My experience has been that you have to beat on and force the developers to come up with a meaningful description of the change, or else, they wind up just parroting whatever diff came up with: Changed line 45 to reference alternate pointer which is too detailed, and fix bugs, which is too generalized.. On the other hand, the release notes are directed at our general customer base and there was a conscious decision made to keep them readable (to some degree) by non-developers. I figured that this was the case. For this reason, very early on, we decided not to include which files changed per release note. Perhaps the best way to handle this is to have the detailed information (in the module, for instance), and then, have some person (you?) prepare the public description of what's changed in this release. Clearly, the level of detail in a .x beta release is going to be different than in a x.0 production release, and I can't think of any automated way to do this, because so much relies on a feel for what the conceptual level of understanding is for the target audience. I think SVN is the answer here. We will have to revisit what our release notes will look like after we have the SVN server as it will not help with non-developer customers. If there is a desire, down the road, to actually provide a platform for useful software radio experimentation, this kind of thing will be quite important. Eric Wachsmann FlexRadio Systems Jim
Re: [Flexradio] SSB Carrier suppression on Preview 12
Have you tried nulling the transmitter image in Preview 12. It could be that the two databases have different values for the gain and phase on the TX image null. Gerald Gerald Youngblood, K5SDR President FlexRadio Systems 8900 Marybank Drive Austin, TX 78750 Ph: 512-250-8595 Email: [EMAIL PROTECTED] Web: www.flex-radio.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dudley Hurry Sent: Sunday, February 05, 2006 12:55 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] SSB Carrier suppression on Preview 12 SDR Gang, I have received several reports while running Preview 12 of unsuppressed carrier. Sure enough it is strong enough to be heard and seen on a ProII receiver.And looking at the transmitted signal in the PowerSDR console, version 11's carrier appears to be roughly 55 db down from the voice peaks, whereas version 12 is only 30 db down.. Anyone else seen or hear this? Don't forget the SDR Net at 1400 Eastern on or around 14.313 MHz. Thanks, 73, Dudley WA5QPZ ___ 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
Re: [Flexradio] FlexRadio at Orlando Hamcation this weekend
Gerald Alls I want to know is: do you have your I/Q recordings this year! (smile) Have a great time! Eric2 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerald Youngblood Sent: Monday, February 06, 2006 1:21 PM To: 'FlexRadio Mailing List' Subject: [Flexradio] FlexRadio at Orlando Hamcation this weekend Hello all, If you are planning to attend the Orlando Hamcation this weekend (Feb. 10-12), please drop by the FlexRadio booth. We would love to shake your hand. Also, please tell your friends to come see us. 73, Gerald Gerald Youngblood, K5SDR President FlexRadio Systems 8900 Marybank Drive Austin, TX 78750 Ph: 512-250-8595 Email: [EMAIL PROTECTED] Web: www.flex-radio.com
Re: [Flexradio] Question on Searching Flex-Radio dot Biz
Hi Eric Thanks for the reply. Searching online with the present system is a bit of a chore! There is just too much stuff to weed through, I pity those with a slow dial-up. I am going to set up a file on my desktop from the archives that I can search and clear out the weeds. Thanks Again Bruce K3CMZ On Mon, 06 Feb 2006 12:01:37 -0600, you wrote: Bruce, Right now, probably the best approach is to use the Ctrl+F find feature built into your browser to search the archive. If you use a program like Thunderbird or Outlook, you can also search through your email folders. I have heard that Google Desktop is good with finding emails you can't seem to locate. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Bruce K3CMZ Sent: Saturday, February 04, 2006 4:00 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Question on Searching Flex-Radio dot Biz I am not able to find a way to search this list. If someone could describe how this is done, Please post! Thanks Much Bruce K3CMZ ___ 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
Re: [Flexradio] SSB Carrier suppression on Preview 12
Hey Jerry, I have both the monitoring and TX radio on dummy loads. As a check, I did the same test on my Pro II as I did with the SDR (using identical settings) and there is no carrier heard from the Pro II like there is on the SDR1000. I really believe the carrier is not being fully suppressed. -Tim --- Tim Ellison ( [EMAIL PROTECTED] ) Integrated Technical Services ( http://www.itsco.com ) -Original Message- From: Jerry [mailto:[EMAIL PROTECTED] Sent: Sunday, February 05, 2006 9:36 PM To: Tim Ellison Subject: Re: [Flexradio] SSB Carrier suppression on Preview 12 Hi Tim What S meter reading? It sounds as if the carrier is down many DB's. If there is any carrier it would blow out the front end of the monitoring radio. A fraction of a milliwatt would gove a S9++ signal. 73 de Jerry At 04:33 PM 2/5/2006 -0500, you wrote: Sure do. I just finished testing it on 20m USB with 1.4.5p12. If I have the TX set to 14.170 MHz and key the rig without modulating, I begin to hear an unsuppressed carrier on a separate receiver starting at 14.17000 MHz (barely audible) which increases in intensity and pitch until a peak at 14.16690 MHz (very audible). It does this with versions 1.4.5p7 and 1.4.4. Version 1.4.4 sounds louder than 1.4.5p7. The difference between 1.4.5p7 and 1.4.5p12 is too close to tell by ear. I have no way to test this with a scope, so these observations are at best approximations. -Tim --- Tim Ellison ( [EMAIL PROTECTED] ) Integrated Technical Services ( http://www.itsco.com ) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dudley Hurry Sent: Sunday, February 05, 2006 1:55 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] SSB Carrier suppression on Preview 12 SDR Gang, I have received several reports while running Preview 12 of unsuppressed carrier. Sure enough it is strong enough to be heard and seen on a ProII receiver.And looking at the transmitted signal in the PowerSDR console, version 11's carrier appears to be roughly 55 db down from the voice peaks, whereas version 12 is only 30 db down.. Anyone else seen or hear this? Don't forget the SDR Net at 1400 Eastern on or around 14.313 MHz. Thanks, 73, Dudley WA5QPZ ___ 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 ___ 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
Re: [Flexradio] FCC equipment authorization
Gerald, Jim The TCB personnel seemed to agree that the "Intentional Radiator" part of the SDR 1000 would becovered by Part 97. There was concern that"Unintentional Radiations" could cause problems, which is probably why IcoKenYaeTec have their equipment Part 15 certifiedwhendigital communication to/from external equipment is provided. All of this stuff is subject to individual interpretation and Jim pretty much summed it up with: "Realistically, it's probably in the category of: as long as nobody complains...". The problemforOriginal Equipment Manufacturers is thata complaintcan cost them a LOT in consequential damage so mostbuildUnintentional Radiation Compliance Certificationintoall new product designcycles. I am presently involved with a new product thathasbothIntentionalandUnintentional Radiations (RFID, BlueTooth,WIFIand GPSsystems embeddedinto a hand-held WindowsCE computer with RS-232, RS-485, Fast Ethernet, USBand Fiber Opticconnectivity options)so we have tosatisfy the limitsof radiatedAND conducted emissionsfor BOTH. Jim is right on with his cautionabout FO driver PC board circuit layout. In fact,given a set of smallerSDR boards and conversion of thePowerSDR GUI torununder Real Time Linux,this productcould be used for ahand-heldSDR1000 with a built-in wired, wireless and/or fiber internet connection. Withnew off-the-shelf, direct conversion ISM BandSystems-On-a-Chip, thisproducthas reached the stage ofdevelopmentwhereit can be 'software re-defined'forCW/AM/SSB/FMoperation in the14, 432-450 and 2304 MHzbands which arevery close to nearby ISM bands (i.e. 13.56 MHz ISM to 14 MHzHAM). Phil, K3IB
Re: [Flexradio] FCC equipment authorization
Funny you should mention that. Matt Ettus of USRP ( http://www.ettus.com) is now building out his FlexMMM series. He has released the Flex400, will soon release the Flex2400, and then the Flex 1296 and Flex 902/3 boards. I have added gr-audio-portaudio to the GnuRadio pile. It is not complete but I learned of the efficacy of portaudio for Linux stuff doing the new WSJT 5.9.3 with Joe Taylor. Frank and I will be able to easily extend the DttSP supported hardware by a factor of 2 :-P by running it behind the GnuRadio with portaudio. It is using these ISM band systems on a chip, I/Q mixer based widgets. I like my Flex400. I used it to give a demonstration of GnuRadio to the national science foundation types at Rutger's Winlab last week. We could send 1.5 MBPS GMSK through a packet system between my 2.2 Ghz P4-M laptop and a 1 GHz Via based widget. I will load pictures on my smugmug site later after I get my PaintShop Pro X reloaded (stinking Corel won't answer my emails asking for a retransmission because of my disk crash. PAY THE $5 for the CD!! ). It is forcing me to learn GIMP and other tools I have neglected. Bob N4HY Philip M. Lanese wrote: Gerald, Jim The TCB personnel seemed to agree that the Intentional Radiator part of the SDR 1000 would be covered by Part 97. There was concern that Unintentional Radiations could cause problems, which is probably why IcoKenYaeTec have their equipment Part 15 certified when digital communication to/from external equipment is provided. All of this stuff is subject to individual interpretation and Jim pretty much summed it up with: Realistically, it's probably in the category of: as long as nobody complains The problem for Original Equipment Manufacturers is that a complaint can cost them a LOT in consequential damage so most build Unintentional Radiation Compliance Certification into all new product design cycles. I am presently involved with a new product that has both Intentional and Unintentional Radiations (RFID, BlueTooth, WIFI and GPS systems embedded into a hand-held WindowsCE computer with RS-232, RS-485, Fast Ethernet, USB and Fiber Optic connectivity options) so we have to satisfy the limits of radiated AND conducted emissions for BOTH. Jim is right on with his caution about FO driver PC board circuit layout. In fact, given a set of smaller SDR boards and conversion of the PowerSDR GUI to run under Real Time Linux, this product could be used for a hand-held SDR1000 with a built-in wired, wireless and/or fiber internet connection. With new off-the-shelf, direct conversion ISM Band Systems-On-a-Chip, this product has reached the stage of development where it can be 'software re-defined' for CW/AM/SSB/FM operation in the 14, 432-450 and 2304 MHz bands which are very close to nearby ISM bands (i.e. 13.56 MHz ISM to 14 MHz HAM). Phil, K3IB -- AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman Laziness is the number one inspiration for ingenuity. Guilty as charged!
Re: [Flexradio] FCC equipment authorization
Robert McGwier wrote: Frank and I will be able to easily extend the DttSP supported hardware by a factor of 2 :-P by running it behind the GnuRadio with portaudio. It's only 3/2! Or even less if you count the SoftRock 4 and 5 as different hardware. Anyway it's the portaudio part that's important. I am deriving a great deal of pleasure from replacing the jack code with it... 73 Frank AB2KT
