Re: [Flexradio] Various things...
Well, I'm not exactly sure what you're expecting when the band is as crowded as shown in that particular example screen shot and, as is often the case, signals from adjacent stations are so close that they overlap. In general, I have no problem identifying the edges of a particular signal when there is no adjacent QRM - certainly to enough accuracy to know whether the selected filter width is sufficient to capture all of the sidebands. I did point out that this was with the 0.5 setting for the panadapter width so there is plenty of scope to expand the display further if that's what floats your boat. As far as the vertical resolution goes, if -40dBm works for you then, let happiness reign. Brett Gazdzinski wrote: Mine looks better than that, I adjusted it to expand the amplitude (-40 to -120). If you look at the image you sent, just how wide exactly is that AM signal??? I cant tell. I see the QST review also nit picked the display... But its much better now that I adjusted it per instructions from Brian. I am having fun now! Brett ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
Brett, You have to be kidding.. Right? I can view a AM signal, even tell the audio response on each sideband, exactly if I move the cursor over the signal and read the frequency response in the lower left of the panadapter. You can monitor your AM signal in the Flex 5000 with the RX2 option, view it in the lower panadapter. I will tell you that the panadapter does take a lot of CPU to display, so if you are having to slow the display refresh down, this will cause the display to be less reactive. 73, Dudley WA5QPZ Brett Gazdzinski wrote: Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jhu...@austin.rr.com ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
Very curious...I think for most PowerSDR users (I have the SDR-1000 and HPSDR kit) the resolution available via the panadapter is a joy to behold. Never had a problem differentiating different types of sigs - AM, SSB, FM, RTTY, etc via their appearance on the display. Something must not be configured right or the PC/Graphics combo is not up to the task. Even on my old Pentium 4 with poor mobo graphics I never had resolution problems. It would be interesting if you could post a screenshot somewhere for comparison purposes. 73, Pete, N3EVL Brett Gazdzinski wrote: Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to n3...@townisp.com No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.115/2405 - Release Date: 09/30/09 10:35:00 ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
No I am not kidding. The Icom had a smaller display but showed more information it seemed. Maybe something is not right with my setup, as I could not begin to tell the bandwidth of an AM signal. It shows a sharp spike (carrier) and very little modulation. The waterfall display seems ok. SSB is quite clear. I have had other sdr's and spectrum analyzers and think as you change the amplitude scale the signal should reflect it. (like it does on spectrum analyzers). If you change from 1db per division, to 10 db per division, the signal should not stay the same size. What is the point of being able to adjust it? Brett - Original Message - From: Dudley Hurry jhu...@austin.rr.com To: Brett Gazdzinski brett.gazdzin...@verizon.net Cc: Flex-Radio E-Mail Reflector flexradio@flex-radio.biz Sent: Thursday, October 01, 2009 4:18 PM Subject: Re: [Flexradio] Various things... Brett, You have to be kidding.. Right? I can view a AM signal, even tell the audio response on each sideband, exactly if I move the cursor over the signal and read the frequency response in the lower left of the panadapter. You can monitor your AM signal in the Flex 5000 with the RX2 option, view it in the lower panadapter. I will tell you that the panadapter does take a lot of CPU to display, so if you are having to slow the display refresh down, this will cause the display to be less reactive. 73, Dudley WA5QPZ Brett Gazdzinski wrote: Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jhu...@austin.rr.com ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
Brett, All I can say is you must have the display really messed up.. I would suggest a database reset to get back to the defaults. Start with 96K or 48 K sample rate and then go to 4X in the panadapter, change the panadapter to AVG, and then go to display tab of Setup and increase the Main Display FPS (Frames per Sec) and if that doesn't convince you then, ... The Icom display does not even show the signal on the correct sideband, and very poor resolution. 73, Dudley WA5QPZ Brett Gazdzinski wrote: No I am not kidding. The Icom had a smaller display but showed more information it seemed. Maybe something is not right with my setup, as I could not begin to tell the bandwidth of an AM signal. It shows a sharp spike (carrier) and very little modulation. The waterfall display seems ok. SSB is quite clear. I have had other sdr's and spectrum analyzers and think as you change the amplitude scale the signal should reflect it. (like it does on spectrum analyzers). If you change from 1db per division, to 10 db per division, the signal should not stay the same size. What is the point of being able to adjust it? Brett - Original Message - From: Dudley Hurry jhu...@austin.rr.com To: Brett Gazdzinski brett.gazdzin...@verizon.net Cc: Flex-Radio E-Mail Reflector flexradio@flex-radio.biz Sent: Thursday, October 01, 2009 4:18 PM Subject: Re: [Flexradio] Various things... Brett, You have to be kidding.. Right? I can view a AM signal, even tell the audio response on each sideband, exactly if I move the cursor over the signal and read the frequency response in the lower left of the panadapter. You can monitor your AM signal in the Flex 5000 with the RX2 option, view it in the lower panadapter. I will tell you that the panadapter does take a lot of CPU to display, so if you are having to slow the display refresh down, this will cause the display to be less reactive. 73, Dudley WA5QPZ Brett Gazdzinski wrote: Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jhu...@austin.rr.com ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
I operate RTTY primarily. I can distinctly see both the mark and space tones cleanly separated on the panadaptor, and they are only 170 Hz apart. I routinely click on the panadaptor to tune rtty signals and rarely have to tune more than 40 Hz with the mouse wheel to fine-tune after the rough click-tune. I suspect you are seeing an extremely wide bandwidth on the panadaptor, and that is preventing you from seeing fine detail. I routinely watch a 25 - 30 KHz segment to get the above hi-rez performance. I have used panadaptors on my radios since the early '70's when Heath offered the first one for hams. I have never seen as good a panadaptor as PowerSDR provides, and that includes 756PRO3s that I formerly used here. I couldn't even tell if a signal was RTTY or CW on the 756PRO3 while watching the same 25KHz band segment. Jerry W4UK At 11:22 PM 10/1/2009, Dudley Hurry wrote: Brett, All I can say is you must have the display really messed up.. I would suggest a database reset to get back to the defaults. Start with 96K or 48 K sample rate and then go to 4X in the panadapter, change the panadapter to AVG, and then go to display tab of Setup and increase the Main Display FPS (Frames per Sec) and if that doesn't convince you then, ... The Icom display does not even show the signal on the correct sideband, and very poor resolution. 73, Dudley WA5QPZ Brett Gazdzinski wrote: No I am not kidding. The Icom had a smaller display but showed more information it seemed. Maybe something is not right with my setup, as I could not begin to tell the bandwidth of an AM signal. It shows a sharp spike (carrier) and very little modulation. The waterfall display seems ok. SSB is quite clear. I have had other sdr's and spectrum analyzers and think as you change the amplitude scale the signal should reflect it. (like it does on spectrum analyzers). If you change from 1db per division, to 10 db per division, the signal should not stay the same size. What is the point of being able to adjust it? Brett - Original Message - From: Dudley Hurry jhu...@austin.rr.com To: Brett Gazdzinski brett.gazdzin...@verizon.net Cc: Flex-Radio E-Mail Reflector flexradio@flex-radio.biz Sent: Thursday, October 01, 2009 4:18 PM Subject: Re: [Flexradio] Various things... Brett, You have to be kidding.. Right? I can view a AM signal, even tell the audio response on each sideband, exactly if I move the cursor over the signal and read the frequency response in the lower left of the panadapter. You can monitor your AM signal in the Flex 5000 with the RX2 option, view it in the lower panadapter. I will tell you that the panadapter does take a lot of CPU to display, so if you are having to slow the display refresh down, this will cause the display to be less reactive. 73, Dudley WA5QPZ Brett Gazdzinski wrote: Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
On Thu, Oct 1, 2009 at 5:25 PM, Brett Gazdzinski brett.gazdzin...@verizon.net wrote: If you change from 1db per division, to 10 db per division, the signal should not stay the same size. What is the point of being able to adjust it? Ah, you need to change the lower (Min:) and upper (Max:) bound on the pan display to change the range, not the step size. Step size only changes the grid scale. I normally have the lower bound set at about -130dBm depending on the noise level in the band. On 40m I normally run with a lower bound of -120dBm. I set the upper bound to -40dBm. That spreads the signals out vertically. There just aren't many signals that can hit -40dBm. -- 73 de Brian, WB6RQN/J79BPL ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Various things...
What sampling rate are you using and what is the console zoom factor? You can widen out the display. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Brett Gazdzinski Sent: Wednesday, September 30, 2009 10:35 PM To: Flex-Radio E-Mail Reflector Subject: Re: [Flexradio] Various things... Well, I have put the 5000a through its paces, and have some questions. The panadaptor and scope displays seem very poor, I am used to being able to see signals much more pronounced, I have adjusted the scale and other options with no improvement. Its hard to see (on the panadaptor) how wide an AM signal is, the scope display does not show the carrier with modulation, and another odd thing, when an AM signal stops talking, the noise level goes up, unlike a normal AM receiver where the carrier quiets the receiver even with no speech. I can adjust the agc and improve things but it seems to need adjustment for various signal strengths, where a normal receiver handles weak and strong signals without any adjustemt needed I spent a lot of time compairing the homebrew receiver to the flex, and the homebrew seems much better in most respects. I am a little disapointed in the displays on the flex, the resolution seems very poor, or is there something I am overlooking? Also, there is no way I can monitor my outgoing audio, because its so delayed, even if I make the buffers as small as is allowed. That is partly a slow PC I guess... Brett N2DTS ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to telli...@itsco.com ___ 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://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
