Re: [Flexradio] Panoramic vertical scale
Hans, Thanks for the reference, I think that was what I was half-remembering. However, wouldn't that mean that if I left the sampling rate at 48ksps and changed the DSP buffer size from 512 to 4096 the baseline would drop by 12db? This doesn't seem to happen. Chris - AE6VK -Original Message- From: Hans-Juergen Hartfuss [mailto:[EMAIL PROTECTED] Sent: Monday, March 05, 2007 12:07 AM To: Christopher T. Day Subject: Re: [Flexradio] Panoramic vertical scale Christopher, plase see my e-mail to the reflector of December 19, 06 includede below. 73, Hans DL2MDQ Dear FRS-Team, an additional remark in the context of the SDR S-meter discussion. This instrument measures the power within the passband selected. In discussions with other users on the band, my impression is that the exact relation S-meter power reading vs. the panadapter baseline reading is not completely clear to everybody. Unfortunately the Manual does not clarify the question. Without any signal (50 Ohm at the receiver input) the panadapter baseline gives the noise power as any other spectrum analyzer system gives for a given bandwidth (noise power spectral density). However, the question remains, what is the bandwidth the scale is refering to? It would be nice the reading would correspond to dBm/Hz which is not the case by comparison with the S-meter reading: As an example under the conditions described before and at 3.7 MHz with preamp HIGH, the panadapter baseline is in my system with the FA-66 at -144 dBm. Simultaneously the S-meter shows at 5 kHz bandwidth: -119.5 dBm at 1kHz: -127.2 dBm at 100 Hz: -137 dBm. Refering all readings to 1 Hz bandwidth, we get in good agreement of these 3 measurements: -157 dBm/Hz (an excellent S-meter!). This means that the panadapter measures the noise power within a passband which is 13 dB wider than 1 Hz that is 20 Hz. If I understand the SDR-1000 correctly, the whole spectrum is represented by a number of FFT bins which equals the buffer size chosen. The 20 Hz bandwidth then results from the fact that I am using 48 kHz sampling rate (SR) and a DSP buffer size (BS) of 2048. For the bandwidth of one bin we then get 48 kHz/2048 = 23.44 Hz in sufficient agreement with my estimation of 20 Hz from above, which means the panadapter gives the noise power in dBm measured within the bandwidth of one FFT bin. One such bin as the smallest bandwidth segment available seems to be chosen as the panadapter spectral density reference. It would first be nice to have this information, if correct and complete, in the Manual and second why don't you use the information of Sampling Rate and Buffer Size to correct the baseline in such a way that the scale refers to 1 Hz (dBm/Hz) and not to dBm/(SR/BS) as described? Thanks in advance for your reply together with congrats once more for this excellent product. Possibly all this has been discussed long before, however, I am still relatively new in the field, since May 06, and still discovering details. Hans, DL2MDQ Am Sonntag, 04.03.07 um 20:29 Uhr schrieb Christopher T. Day: I'm sure this has been answered many times, but the it seems to have fallen out of my brain. According to the Manual, the Received Signal Meter reads the actual RMS power within the filter passband. This means it should scale with the width of the filter and it sure seems to do so. I can't find any similar definition for the vertical scale of the Panoramic Display. What does that reading mean? If it were the power in the minimal FFT bin, I would expect it to scale with the DSP Buffer Size, i.e.., fewer FFT point = wider bin = more signal. Maybe I'm missing it, but it doesn't appear to scale that way. Is the vertical scale already divided out to be RMS power/Hz? Thanks Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ attachments/20070304/672d55d1/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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.flex-radio.com/
[Flexradio] Panoramic vertical scale
I'm sure this has been answered many times, but the it seems to have fallen out of my brain. According to the Manual, the Received Signal Meter reads the actual RMS power within the filter passband. This means it should scale with the width of the filter and it sure seems to do so. I can't find any similar definition for the vertical scale of the Panoramic Display. What does that reading mean? If it were the power in the minimal FFT bin, I would expect it to scale with the DSP Buffer Size, i.e.., fewer FFT point = wider bin = more signal. Maybe I'm missing it, but it doesn't appear to scale that way. Is the vertical scale already divided out to be RMS power/Hz? Thanks Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070304/672d55d1/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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] UCB schematic and header question
1) These were added after the schematic was drawn. The schematic is not up-to-date. 2) These are for future enhancements. Leave them open. 3) INP6 is a virtual line on the schematic. The two instances of it connect together. In other words, the PCB connects the top of R1 to Pin 3 of U8. Chris - AE6VK -Original Message- From: Ross [mailto:[EMAIL PROTECTED] Sent: Saturday, March 03, 2007 11:15 AM To: FlexRadio@flex-radio.biz Subject: [Flexradio] UCB schematic and header question Hi all, This query doesn't seem to have made onto the reflector, so I am sending it again. My apologies if it coms up twice. I have built up the UCB , but I have a couple of questions. (a) the schematic on the K3TUF website does not show U13, U14, U15 etc is there an updated schematic anywhere? (b) at the bottom of the board is a 10pin header, this does not appear to be in the schematic either, are these pins supposed to be jumpered? if so is it across the board? (c) what is INP6 (as shown on the schematic) and where does it come from? Assistance please. Thanks Ross ZL1WN -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070304/a56da436/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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] UCB schematic and header question
Ross, I haven't done that specific thing myself, but have a look at the XVTR Setup Window that you get from the XVTRs button on the Main Menu Bar. The idea seems to be that you use the VHF+ button on the Band Panel, which switches the buttons from HF bands to just numbers. Then you set up what you want the buttons to mean on VHF via the XVTRs Window. In particular, if you enable Band Button 0, for example, then you can select the UCB Address [= Relay Number. Note that the Pins on the ExtCtl Panel represent the _bits_ of the UCB Address with Pins 1-4 giving you Relays 0-15.] You can also set up other useful stuff like the real frequency covered by the XVTR. There is a little more detail in the 1.8.0 SDR-1000 Manual, Chapter 9 Operating Forms. I'm not completely sure how you are trying to set things up, but it sounds like you have only two choices - select 2m or select 70cm. That sounds like a single button/relay will do using the normally open connection. E.g., enable Button 0 for 70cm and select UCB Address 0. Then, when you select Button 0, the UCB relay will close, switching your control relay to the 70cm position. If you select any other button - enable another one for 2m and some other Address - the relay will release and the control relay will switch to 2m. That's probably garbled some but I hope you get the idea. Keep me posted. Chris - AE6VK P.S. - I spent some vacation time last year in NZ and loved it. -Original Message- From: Ross [mailto:[EMAIL PROTECTED] Sent: Sunday, March 04, 2007 3:49 PM To: Christopher T. Day Subject: Re: [Flexradio] UCB schematic and header question Thanks Chris, that answers the question exactly. My next question is related. I am trying to use the UCB in the following manner. I have my SDR1000 1 watt rig, set up to drive a transverter on 2m an 70cm. by enabling 1 and 2 in the XVTR option. I have relays feeding the 2 and 70 transverters, I wish to use the UCB to control the relay that selects either the 2 or 70cm relays. So far I haven't worked out how to do it. My idea is that when I select say 1 (which is 144mhz) then the controlling relay will switch the SDR output to the 144mhz relay then to the transverter, similarly when 2 (432) is selected the controlling relay will switch the input to the 432 relay. Using the EXT CTRL in the setup doesn't seem to work. Ideas as to what I need to do please. Thanks Ross ZL1WN - Original Message - From: Christopher T. Day [EMAIL PROTECTED] To: Ross [EMAIL PROTECTED]; FlexRadio@flex-radio.biz Sent: Monday, March 05, 2007 9:16 AM Subject: RE: [Flexradio] UCB schematic and header question 1) These were added after the schematic was drawn. The schematic is not up-to-date. 2) These are for future enhancements. Leave them open. 3) INP6 is a virtual line on the schematic. The two instances of it connect together. In other words, the PCB connects the top of R1 to Pin 3 of U8. Chris - AE6VK -Original Message- From: Ross [mailto:[EMAIL PROTECTED] Sent: Saturday, March 03, 2007 11:15 AM To: FlexRadio@flex-radio.biz Subject: [Flexradio] UCB schematic and header question Hi all, This query doesn't seem to have made onto the reflector, so I am sending it again. My apologies if it coms up twice. I have built up the UCB , but I have a couple of questions. (a) the schematic on the K3TUF website does not show U13, U14, U15 etc is there an updated schematic anywhere? (b) at the bottom of the board is a 10pin header, this does not appear to be in the schematic either, are these pins supposed to be jumpered? if so is it across the board? (c) what is INP6 (as shown on the schematic) and where does it come from? Assistance please. Thanks Ross ZL1WN -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070304/a56da436/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 Knowledge Base: http://kb.flex-radio.com/ __ NOD32 2094 (20070304) Information __ This message was checked by NOD32 antivirus system. http://www.eset.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/
Re: [Flexradio] RX only Antenna
Mark, I found the same problem with Pin 6 on 20m only with my unmodified, 1W SDR-1000 using the new UCB. This is now sounding like a bug, not a setup problem, to me. Chris - AE6VK -Original Message- From: Mark Mumaw [mailto:[EMAIL PROTECTED] Sent: Sunday, February 25, 2007 10:23 PM To: FlexRadio reflector Subject: Re: [Flexradio] RX only Antenna ... I also found that the 20 Meter pin 6 did not work. Pin 6 worked properly on all other bands except 20 Meters. I don't know if this is a bug or just something with my setup. ... 73's Mark NU6X Sedona,AZ ___ 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] SDR-1000 CW Contest Performance
Besides, there are a few of us that loath Linux. Chris - AE6VK -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Thursday, February 22, 2007 10:34 AM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] SDR-1000 CW Contest Performance At 08:42 AM 2/22/2007, Frank Brickle wrote: Jim Lux wrote: And when will PowerSDR have the new dttsp v2.0 integrated? Does the Windows dttsp v2.0/PowerSDR v2.x still use PortAudio? That is entirely up to Flex. The development trunk now supports OSX and linux, and as a consequence, FireWire, LAN/WAN distribution of compressed audio, and quite a few other features that will require some gymnastics to accommodate under XP or Vista. Since, alone of all the participants, Flex has a strong financial stake in the Windows version, but has consistently punted on the issue of supporting other platforms, I think it's their responsibility and theirs alone to underwrite the modifications necessary to support their chosen platform. Offhand, I suspect that the moderately large base of installed SDR1000 users have somewhat of a financial stake in a Windows version, as well. (hmm.. 1000 users at $1500 investment each.. just $1.5 Million invested in what you imply is an orphan product that nobody cares about) Would flex care to comment on the road ahead? Jim, W6RMK ___ 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/ ___ 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/
[Flexradio] FW: single line-in/line-out cable
[This was meant for the reflector. Meanwhile the reference is http://audiosystemsgroup.com/RFI-Ham.pdf which I found to be EXCELLENT. There are more very good papers from the same source at http://audiosystemsgroup.com/publish.htm Chris - AE6VK] -Original Message- From: Christopher T. Day Sent: Tuesday, February 20, 2007 1:29 PM To: 'Joe - AB1DO' Subject: RE: [Flexradio] single line-in/line-out cable I use a length of CAT-5a twisted pair cable for this, two pairs for transmit and two for receive, sharing the white conductor as ground in each pair of pairs. I don't have time at the moment to dig up the reference, but one of the audio engineer web pages touted CAT-5a cable as better than shielded since the twisting was held to such a tight standard. Seems to work very well for me. Chris - AE6VK -Original Message- From: Joe - AB1DO [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 20, 2007 1:13 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] single line-in/line-out cable Hi gang, mulling over some ways to reduce the number of SDR-1000 interconnect cables here and I was wondering if a single 4 lead shielded cable could be used to replace the two I/Q cables between the SDR-1000 and the sound card. The four leads would be connected in pairs to a pair of 1/8 audio connectors either side, with the shield connected to only one connector pair (say To Line In). That way there would only be one ground connection and one cable. I don't think there would be an issue concerning running both the line-in and line-out wires in one cable as they are never used together anyway (one is transmit, the other receive). I also don't think there would be an issue of cross-talk between tip and ring (most 1/8 audio cables are twin leads within a single shield and if I'm not mistaken, the 15-pin Delta-44 cable runs all leads within a single shield), but I may be wrong on that one. Comments anyone? 73 de Joe - AB1DO -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070220/6f05e3e1/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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] spam: SVN828
I wish you hadn't pointed out hecto and kilo. Otherwise, I'd thought the rule was that multipliers 1 were upper case and those 1 were lower case. So much for that idea. Chris - AE6VK Anybody else remember when moonbounce was on 1.024 kilomegacycles? -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 17, 2007 6:11 AM To: Bob Tracy; [EMAIL PROTECTED]; [EMAIL PROTECTED]; FlexRadio Subject: Re: [Flexradio] spam: SVN828 At 06:05 PM 1/16/2007, Bob Tracy wrote: You guys have to pardon the older generation. Back when the terminology change was made from cycles to Hertz it was common to use lower case for the multiplier. Some habits are hard to break. The prefixes aren't consistent anyway. h (hecto) and k (kilo) are lower case, M, G, T are uppercase. m is lower case, mu is lower case (and a different symbol set to boot), p and f are both lower case. 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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] spam: SVN828
Try this list - http://www.essex1.com/people/speer/large.html So far, I've only seen Exa- through zepto- used in earnest. Chris - AE6VK -Original Message- From: Joe - AB1DO [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 17, 2007 10:57 AM To: FlexRadio Subject: Re: [Flexradio] spam: SVN828 How about deca (da)? Groeten, Joe - Original Message - From: [EMAIL PROTECTED] To: Jim Lux [EMAIL PROTECTED]; Bob Tracy [EMAIL PROTECTED]; [EMAIL PROTECTED]; FlexRadio FlexRadio@flex-radio.biz Sent: Wednesday, January 17, 2007 13:43 Subject: Re: [Flexradio] spam: SVN828 And n nano c centi d deci I must missing some ;-) age??? groeten Peter petervn(a)hetnet.nl mailto:[EMAIL PROTECTED] ; pa0pvn(a)hetnet.nl mailto:[EMAIL PROTECTED] ; pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org . Van: Jim Lux [mailto:[EMAIL PROTECTED] Verzonden: wo 17-1-2007 15:11 Aan: Bob Tracy; [EMAIL PROTECTED]; [EMAIL PROTECTED]; FlexRadio Onderwerp: Re: [Flexradio] spam: SVN828 At 06:05 PM 1/16/2007, Bob Tracy wrote: You guys have to pardon the older generation. Back when the terminology change was made from cycles to Hertz it was common to use lower case for the multiplier. Some habits are hard to break. The prefixes aren't consistent anyway. h (hecto) and k (kilo) are lower case, M, G, T are uppercase. m is lower case, mu is lower case (and a different symbol set to boot), p and f are both lower case. Jim -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070117/67c7bae6/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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.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 Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Mike inputs with Edirol FA-66
The microphone connector on the front of the SDR-1000 does _not_ feed the audio signal to anything inside the box; only the PTT circuit connects to the electronics. The small mic jack on the back of the SDR-1000 is directly connected to the connector on the front. The mic audio has to go into the FA-66 no matter what. The idea is that if you use the front connector, you need to supply a cable from the jack in the back to the FA-66. Chris - AE6VK -Original Message- From: Army Curtis - AE5P [mailto:[EMAIL PROTECTED] Sent: Monday, January 15, 2007 4:06 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Mike inputs with Edirol FA-66 Hello all, Using the Edirol FA-66 sound box. When I connect a Heil headset mike directly to mike input 1 on the FA-66, it works like a champ. When I try and connect a microphone either to the mike jack on the front of the SDR-1K or to the miniature phone jack on the back of the SDR, no transmit audio at all. Is it possible to have a microphone connected to the SDR when using the FA-66, or must any and all microphones be connected directly to the FA-66? Thanks very much for any help. Army Curtis - AE5P Nacogdoches, the oldest town in Texas -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.10/626 - Release Date: 1/14/2007 8:29 PM ___ 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/ ___ 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] [hpsdr] D anyone?
Of course, there is always Java, which not only compiles across platforms but whose executables really do run across platforms. But that would be too easy. Chris - AE6VK -Original Message- From: Jerry Flanders [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 02, 2007 8:15 AM To: Hpsdr (E-mail); FlexRadio Reflector Subject: Re: [hpsdr] [Flexradio] D anyone? * High Performance Software Defined Radio Discussion List * Versions of the compiler are available for Linux as well as Win32. They say the difference is String literals are read-only. Attempting to write to them will cause a segment violation with the Linux version. Is this a serious limitation for PowerSDR? Sure would be nice if one development effort could be easily compiled to both platforms. Otherwise, recent postings here make me wonder if a consumer version of PowerSDR will still be available in 3-4 years. Jerry W4UK At 10:05 AM 1/2/2007, Philip Covington wrote: http://www.digitalmars.com/d/index.html :-) Happy New Year to All! 73 de Phil N8VB ___ HPSDR Discussion List To post msg: [EMAIL PROTECTED] Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org HPSDR web page: http://hpsdr.org Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/ ___ 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] [FlexRadio] PowerSDR Equalizer does not savesettings for later recall
Bob, Up near the Profiles drop-down box there is a Save button. I think Tim means that one, not the Accept button near the bottom of the Setup window. Chris - AE6VK -Original Message- From: Robert Cleve [mailto:[EMAIL PROTECTED] Sent: Saturday, December 23, 2006 4:14 AM To: Flexradio Subject: Re: [Flexradio] [FlexRadio] PowerSDR Equalizer does not savesettings for later recall Tim, If you mean by going into the Setup menu and clicking on Apply and then OK then this doesn't work for me. Doing that, and then after choosing a different Transmit Profile, causes the saved EQ settings to disappear. When I go back to the Transmit Profile where I had originally saved the EQ setting it was gone. Running here v1.8.0. Bob -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20061223/b65820fd/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
Re: [Flexradio] Double rx image on pan scope power sdr-1000
I've been seeing a similar effect even though I can get the image rejection panel to behave correctly. What seems particularly strange is that the phantom images appear _below_ the received signal. Chris - AE6VK -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Saturday, November 25, 2006 6:30 AM To: John Bryson; flexradio@flex-radio.biz Subject: Re: [Flexradio] Double rx image on pan scope power sdr-1000 At 02:28 PM 11/24/2006, John Bryson wrote: All of a sudden I'm getting double image signals on the scope. Example: if I tune in wwv in the passband at 15.000mhz I will also see the same sig at about 14.977mhz with equal strenth. Sounds like either the I or Q (left or right) isn't getting through. calibrating the image rejection funtion has no effect at all. I tried manually with sig gen but has no effect. When tuning in sigs, they seem to jump several khz up or down. That's because of the spur reduction. The DDS actually tunes in steps, with the fine tuning done in software on the I/Q data from the radio. We all talk about an 11 kHz IF, but in reality, it varies somewhat. When I tune up in freq, the image will go down in freq. and vise-versa I replaced line in cable no change Hmm.. that's the usual problem. Ran both versions v.1.6.2 and 1.6.3 ... no change Sound card is the delta-44. Windows -xphome GOt any tips for me on this problem? tks John Jim, W6RMK ___ 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] Is CW emission at legal quality? Bug 655
I've been trying to get my SDR-1000 ready for transmission and I think I'm hitting the effects of Bug 655 - there is no CW image control for TX. What I see on my SoftRock watching the SDR-1000 CWL signal (into a dummy load, of course) has the image at 1200Hz above the desired signal and an audio second harmonic or intermixing at 600Hz below and 1800Hz above the desired signal, using a 600Hz nominal CW tone. All three of these spurious signals are ~20-25db below the main signal, which seems to me to constitute a signal that it would be illegal for me to put on the air. According to observation and Bug 655, there seems to be no way to adjust things to make them better. Is this particular to my system or is it seen by others? My worry from the Bug description is that this may be affecting all SDR-1000 CW users. Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20061107/530f7f4f/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] Microphone connector model
Does anyone know the model number/part number for the 4-pin female microphone connector that mates with the 4-pin male microphone panel connector on the middle-era SDR-1000 boxes, circa November 2005? I need another one to make up a cable for a Heil HM-Pro I just bought at Pacificon. Thanks. Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20061016/cc2d69e4/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] DC/DC Converter (DC1) Replaced with Linear Supply
John, What linear supply did you use? Thanks. Chris - AE6VK -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, September 22, 2006 8:06 AM To: flexradio@flex-radio.biz Subject: [Flexradio] DC/DC Converter (DC1) Replaced with Linear Supply Hi Folks, I just wanted to let you know about a modification I made to my radio. DC1 is a switch mode converter that provides +/- 15 volts for the instrumentation amplifiers IC6/7 on receive that interface the QSD to the sound card. The DC/DC converter's internal oscillator free runs at ~120 kHz and is very rich with odd harmonics, every 240 or so kHz, throughout the HF range. This manifests itself as low level 'carriers' that drift around and through receive frequencies. When the SRD is first powered up they move quite fast, but after the unit has warmed up the move very, very slowly through your QSO. These signals were about S4 on my SDR1000 in the 40M band and are easily removed with the automatic notch. But, loving to tinker like I do I removed the DC1 and soldered a 7 pin header in its place. I used a 1 x 2 x 2, +/- 15v linear supply wired to the header. How's it work? Great! No more warbling tones from within the SDR. I wish I would have done more before and after testing. Now when I connect the receiver to a dummy load, most of the bands are clear of spurs with the noise floor at -153 dBm. I imagine that the fundamental waveform (square wave?) of the DC/DC converter was putting an awful lot of total integrated power into the QSD and mixing with other signals there to increase the total spurs. It just keeps gettin' better. Regards, John k2ox ___ 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
Re: [Flexradio] OT : USB - Parallel
Alberto, You might take a look at the UM245R module from FTDI Chips. http://www.ftdichip.com/Products/EvaluationKits/UM245R.htm It has a bit-bang mode that might do what you want and it's quite inexpensive. http://www.ftdichip.com/Documents/AppNotes/AN232R-01_FT232RBitBangModes. pdf I have one sitting on my bench, but I haven't gotten around to doing anything with it yet. Chris - AE6VK -Original Message- From: Sami Aintila [mailto:[EMAIL PROTECTED] Sent: Monday, August 21, 2006 3:44 AM To: Alberto I2PHD Cc: flexradio@flex-radio.biz Subject: Re: [Flexradio] OT : USB - Parallel On 8/15/06, Alberto I2PHD [EMAIL PROTECTED] wrote: If someone has suggestions, please don't be shy... :-) Alberto, Commercial off-the-shelf devices are almost always only USB-to-printer and not really USB-to-parallel adapters. Using them for anything else than printing is very difficult and often impossible. However, the FlexRadio USB adapter could probably do what you need, but it may require some additional software development. If you have the Flex USB adapter, I could send you some code to test with your DDS board. But if you don't have the Flex adapter, and would need to buy one for this experiment, please understand that I can't promise it will work! 73, Sami OH2BFO ___ 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
Re: [Flexradio] First SDR1000 to SDR1000 EME Contact Made on Two Metersbetween W5UN and W0VB on August 16, 2006
Terry, Terrific! Two questions: 1) Did either/both of you record the QSO as a wave file? 2) Any chance of such wave files being posted for the enjoyment of the rest of us? Thanks. Chris - AE6VK -Original Message- From: Terry - W0VB [mailto:[EMAIL PROTECTED] Sent: Sunday, August 20, 2006 4:12 PM To: flexradio@flex-radio.biz Subject: [Flexradio] First SDR1000 to SDR1000 EME Contact Made on Two Metersbetween W5UN and W0VB on August 16, 2006 Greetings, I'm happy to report that Dave, W5UN, and I completed what we believe is the first EME contact using an SDR1000 on each end of the contact on August 19, 2006. I was able to visit Dave, W5UN on Saturday, August 12th, 2006 with the purpose of getting his SDR1000 (original owner W3EME) upgraded and operational. Dave upgraded his sound card to a Delta 44 card, and loaded up the virtual serial driver from N8VB. He had all this installed, and running, prior to my arrival at 10 PM at night. We tuned the installation, and listened to signals off the moon until 3 AM. Things seemed to be working as desired. His old setup was using a Sound Blaster Audigy 2 (if memory serves me). Upon installing the Delta 44, his observation was This radio went from something with potential (read that as poor) to a real high performance radio!. Fant, AA5F, and I left his QTH around 11 AM in the morning with Dave on a mission to incorporate the SDR1000 into the primary operating position of his station. I continued my trip from east Texas to an unplanned week long work assignment in Raleigh, NC arriving back at my home QTH a week later. After finally arrived home at 1900Z on Saturday, August 19th W5UN calls and says he's ready to run at 2200Z. We start our EME QSO using a digital mode called JT65B from the application - WSJT. Twenty five (25) minutes later I finally heard and saw Dave's signal on the radio. I was a little worried because they was a ripping aurora going on with some signals reaching 20 over S9 on my receiver whenever I aimed north. We completed this historic QSO by 2230Z. Great day in my shack! Both SDR1000 configurations used one (1) CPU (everything running on one PC) - WSJT application running JT65B mode - VAC, Virtual Audio Cable - N8VB's Virtual Serial Cables - each person using an External Two Meter transverter W5UN Station - 32-17 el yagi antennas - 1,200 watts out W0VB Station - one (1) 21 el yagi (no elevation) - 300 watts out - preamp in the shack Terry, W0VB ___ 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
Re: [Flexradio] USB Parallel Port Adapter
Sami, Thanks, that seems to answer my original question. But I've thought of another. Suppose instead of having a USB-to-Parallel Port Adapter from Flex-Radio, I wanted to build my own USB device that had as one of its Functions providing access through its USB port to the SDR-1000 parallel port so that PowerSDR can still control the hardware. Is that firmware Open Source like the PowerSDR code? If not, is there enough public specification around for me to write my own? Thanks. Chris - AE6VK -Original Message- From: Sami Aintila [mailto:[EMAIL PROTECTED] Sent: Saturday, June 24, 2006 1:38 PM To: Christopher T. Day Cc: Flexradio Subject: Re: [Flexradio] USB Parallel Port Adapter Chris, My question is, is it non-standard in any way? The answer is yes. And no. The USB adapter firmware was written specifically for SDR-1000, so you can't use it with any other parallel port device. However, firmware is actually a misnomer when we're talking about Cypress EZ-USB, because the device is entirely RAM-based. In theory you can program your own firmware to the USB adapter and use it for whatever you like! 73, Sami OH2BFO ___ 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] Older WAV files still available?
Is there any accessible place on the Flex-Radio web site with the old WAV files that used to be demos for the SDR-1000? In particular, one of them was a moonbounce signal from an Italian station. It was one of my favorites, but I can't find it on my machine any more and the index file in the wave file directory of the Flex-Radio download site prevents my browser from seeing anything but the three currently linked files. Thanks. Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060618/58dc8c93/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] 6M and the SDR-X
Duane, Since the target price range of the SDR-Xseems to be ~$10,000, a fleet of them doesn't sound like what you're looking for. Chris - AE6VK -Original Message- From: Duane - N9DG [mailto:[EMAIL PROTECTED] Sent: Friday, May 26, 2006 11:26 AM To: FlexRadio@flex-radio.biz Subject: [Flexradio] 6M and the SDR-X Since the 6M topic has come up I'll make another plea for a version of the Flex Radio SDR to be made available that is designed exclusively for VHF transverter use. Its key features would include: 1. 26-36 MHz coverage (or any other single HW pre-configurable range). 2. 100mW max RF output. 3. Separate (or common) RX/TX IF ports. 4. Optional support for multiple (6?) switched RX/TX IF ports. 5. Integrated UCB functionality. I'm sure there's more key features to include but I can't think of them at the moment ;).. I haven't seen the details of the SDR-X yet but I wonder if it is modular enough HW wise to accommodate this?? One of the goals of such a transverter IF radio would be to keep its acquisition costs low so that I VHF'ers afford to buy a small fleets (5-6) of them to interface with all of thier transverters. Part of keeping the cost down is to do away with all the band-filter switching needed for full HF coverage. Single band (hardwired) is all that will be need for dedicated transverters use. Thoughts? Duane N9DG __ 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 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] Issues Remaining
If you look down to the second paragraph of the message you replied to, it says $75 plus shipping. Chris - AE6VK -Original Message- From: Jimmy Jones [mailto:[EMAIL PROTECTED] Sent: Thursday, May 25, 2006 3:22 AM To: John Basilotto; Tim Ellison; Toby Pennington; Flex Subject: Re: [Flexradio] Issues Remaining Has there been a price set for this upgrade? My radio starts about 10 cycles or so down and works it's way up to be fairly stable. Jimmy - Original Message - From: John Basilotto To: Tim Ellison ; Toby Pennington ; Flex Sent: Wednesday, May 24, 2006 7:46 PM Subject: Re: [Flexradio] Issues Remaining All SDR1000s sold after April 3 have the thermistor installed. The radio now stabilizes after three minutes and is rock solid from there on out. For those interested inn having the thermistor installed, the cost is $75 plus shipping. More information will be released next week. John P. Basilotto W5GI Marketing and Product Manager FlexRadio Systems Office 512-250-8595 Mobile 512-663-6727 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Tim Ellison Sent: Wednesday, May 24, 2006 6:23 PM To: Toby Pennington; Flex Subject: Re: [Flexradio] Issues Remaining Toby, I don't operate CW very much so I can't add anything about #1 other that what others have said. As for #2, I have never had the power jump on me running in any mode. The SDR1K out 100 watts PEP rain or shine. Matter of fact with the gain limiting logic, you really can't over drive it without having to really work at it. There is a little frequency drift in the first 10-15 minutes the rig is on until it reaches operating temperature. I operate a lot of PSK and I don't ever notice the drift. Also, Flex is supposed to be putting a thermistor on the OX to stabilize it a little more, so this should be a moot point unless you need 10^-4 Hz stability. :-) -Tim --- Tim Ellison ( [EMAIL PROTECTED] ) Integrated Technical Services ( http://www.itsco.com ) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Toby Pennington Sent: Wednesday, May 24, 2006 5:55 PM To: Flex Subject: [Flexradio] Issues Remaining FWIW.I have decided to postpone purchasing an SDR 1K due to the following reported problems. If I am in error please correct.. 1. On CW the rig goes out of phase periodically 2. The power output can suddenly jump from 100 watts to 120 to 130 watts 3. Frequency stability can vary from 15 to 25 hz while transmitting as the osc heats up (design Flaw?) Otherwise the SDR 1k seems to be an excellent rig with great potential, but any one of the above listed issues is a deal killer. Toby W4CAK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20060524/890d76f8/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 ___ 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 -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.0/346 - Release Date: 5/23/2006 -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20060525/6c7a3623/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 ___ 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] Cw Latency Problem Solved?
Toby, I'm not certain, but I suspect this was a comment about the SDR-X, not the SDR-1000. I doubt that there is a simple full-QSK solution with the latter given its half-duplex design. Chris - AE6VK -Original Message- From: Toby Pennington [mailto:[EMAIL PROTECTED] Sent: Sunday, May 21, 2006 12:02 PM To: Flex Cc: Ron Hinton Subject: [Flexradio] Cw Latency Problem Solved? I was just told by someone that Gerald made the comment on Teamspeak last night that the cw latency problem had been solved. Someone is already able to send cw at 60 wpm QSK with no latency and has found a way to do this. Does anyone else know about this and in particular how is this achieved. by a software change or hardware addition. Also does anyone know about the timeline for this improvement to the SDR 1K. Toby W4CAK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20060521/d293d1ed/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 ___ 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] Cw Latency Problem Solved?
Ok, I misremembered. I'll have to review the recording. Chris - AE6VK -Original Message- From: Ken N9VV [mailto:[EMAIL PROTECTED] Sent: Sunday, May 21, 2006 8:15 PM To: Christopher T. Day Cc: Toby Pennington; Flex; Ron Hinton Subject: Re: [Flexradio] Cw Latency Problem Solved? I have listened to that part of the recording again today (now on teamspeak) and he clearly said that the current problem and limitation is the SOUNDCARD and not the SDR-1000 hardware. So I guess that means that the HPSDR Janus board is a LIFE SAVER and may mean some super CW performance from the current SDR-1000 hw? bk de ken Christopher T. Day wrote: Toby, I'm not certain, but I suspect this was a comment about the SDR-X, not the SDR-1000. I doubt that there is a simple full-QSK solution with the latter given its half-duplex design. Chris - AE6VK -Original Message- From: Toby Pennington [mailto:[EMAIL PROTECTED] Sent: Sunday, May 21, 2006 12:02 PM To: Flex Cc: Ron Hinton Subject: [Flexradio] Cw Latency Problem Solved? I was just told by someone that Gerald made the comment on Teamspeak last night that the cw latency problem had been solved. Someone is already able to send cw at 60 wpm QSK with no latency and has found a way to do this. Does anyone else know about this and in particular how is this achieved. by a software change or hardware addition. Also does anyone know about the timeline for this improvement to the SDR 1K. Toby W4CAK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20060521/d293d1ed/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 ___ 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] 16 versus 24 bit audio
Peter, One subtlety that was mentioned once but not emphasized very much is that some of what you may be seeing as noise is actually deliberate dithering in the card, which has the effect of pushing quantization noise out to inaudible frequencies. 8-bits seems a bit much for dithering to me, but still, a perfect non-dithering card, i.e., one that outputs a pure string of '0's for a shorted input, is arguably _worse_ than a dithering card that outputs a controlled spectrum of noise on shorted input. It can all get rather weird when there are non-linear, low S/S+N psychoacoustic detectors at the end of the chain, i.e., ears. Chris - AE6VK -Original Message- From: Peter Martinez [mailto:[EMAIL PROTECTED] Sent: Friday, May 19, 2006 11:20 PM To: Flex Reflector Subject: Re: [Flexradio] 16 versus 24 bit audio From G3PLX: Alberto: Thanks! That's the information I was seeking. It looks as if I was half-right, if there are, at best, 18 good bits in a 24-bit card. As Phil says, if 16-bit cards turn out to be worse that 16-bits, then there is some reason to go for a 24-bit card (which is worse than 24bits!). But for sure, 24 bit cards are not going to be 256-times (48dB, 8-bits) better than 16-bit cards. I will now continue working to convert my own 16-bit SDR code to 24-bits, but I think I will add a button on the front panel which zaps the bottom 8 bits. It will be VERY interesting to see if it makes any difference. To take Frank's point, as far as I can see from both the ASIO and WMME interfaces, there IS an accessible point in the software where this can be done before the audio data becomes floating-point. Thanks to all who replied. 73 Peter ___ 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] Teamspeak Audio - 05-13-06 lots of announcements
Steve, Unfortunately, the input voltage _is_ critical; the picoPSU will shut down if the input voltage is over ~13-13.5V. I picked the picoPSU mostly because it was cute and would fit well in a small box, once we get that far. Most guys felt they already had or could get a surplus ATX supply out of any old computer; that power cable would plug into the Atlas connector directly. The only caveat is that a number of older, cheaper ATX supplies need a minimum load for the switching regulator to be stable. I haven't pursued that route myself, but there is a place for one on the Atlas board. 10 ohms is the usual value = a few watts. There are such things available from Mouser and, presumably, others. There are only three boards in existence so far and I think the other two have been powered by multi-voltage bench supplies through the pin header, not the ATX connector. Chris - AE6VK -Original Message- From: Steve Nance [mailto:[EMAIL PROTECTED] Sent: Sunday, May 14, 2006 8:21 AM To: Christopher T. Day; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] Teamspeak Audio - 05-13-06 lots of announcements Thanks Chris, guess I had better get one on order. Is the input voltage critical? I would like to use a 13.8 vdc Astron I have. Steve - K5FR -Original Message- From: Christopher T. Day [mailto:[EMAIL PROTECTED] Sent: Sunday, May 14, 2006 9:58 AM To: Steve Nance; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] Teamspeak Audio - 05-13-06 lots of announcements Steve, It is the picoPSU-120. http://www.mini-box.com/s.nl/sc.8/category.13/it.A/id.417/.f This site also carries a variety of 12V switching power supplies to feed it. I bought the 90W version. Chris - AE6VK -Original Message- From: Steve Nance [mailto:[EMAIL PROTECTED] Sent: Sunday, May 14, 2006 7:26 AM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Teamspeak Audio - 05-13-06 lots of announcements Eric, This DC to DC pwr supply you mentioned, do you know the name and model? I thought I saved the posts, but can't find it. 73, Steve - K5FR snip It is designed to be powered by an ATX computer supply but will need a 10 ohm x 10 watt load resistor on the supply unless you use the supply Chris used. I don't offhand remember the price of that DC to DC ATX supply, but it runs off 12 volts and does not need a load resistor. /snip ___ 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] Teamspeak Audio - 05-13-06 lots of announcements
Bob, I agree that the Class E-S approach has a lot of appeal, but presumably we don't have to think of it as envelope elimination and restoration - we never have to make the envelope at all until the final. Chris - AE6VK -Original Message- From: Robert McGwier [mailto:[EMAIL PROTECTED] Sent: Sunday, May 14, 2006 8:35 AM To: Christopher T. Day Cc: Steve Nance; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Teamspeak Audio - 05-13-06 lots of announcements Never was there a better picture of why envelope elimination and restoration transmitters are so important. With Class E power amplifiers and Class S modulators (PWM, etc.) we too can produce power with efficiencies so high they *DON'T NEED MAJOR COOLING IF ANY*! Maybe these pictures (of a switching power supply) will help others understand the importance of this collection of ideas. How would you like an amplifier section that needed almost no more territory than that (per band) and produced no more heat than that will produce and yet deliver 100 watts to the load? I have been looking for an example of what the modulator (switching power supply with a twist) would look like. Thanks ;-). Bob Christopher T. Day wrote: Steve, It is the picoPSU-120. http://www.mini-box.com/s.nl/sc.8/category.13/it.A/id.417/.f This site also carries a variety of 12V switching power supplies to feed it. I bought the 90W version. Chris - AE6VK -- 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! ___ 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] Teamspeak Audio - 05-13-06 lots of announcements
Bob, And for those of us not attending Dayton, there will be postings of photos and the block diagram? Hint hint. Chris - AE6VK -Original Message- From: Robert McGwier [mailto:[EMAIL PROTECTED] Sent: Sunday, May 14, 2006 12:37 PM To: Christopher T. Day Cc: Steve Nance; FlexRadio@flex-radio.biz; High Performance Software Defined Radio Discussion List Subject: Re: [Flexradio] Teamspeak Audio - 05-13-06 lots of announcements Chris: ... For those of you attending Dayton, if you care to drop by the AMSAT booth, you may see the SDX prototype in action and see the block diagram Lyle has drawn for the SDX where HELAPS (EER) is done. ... Bob N4HY ___ 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] 11.025 KHz IF question
And apparently it's 44100 because they used NTSC video tapes to store the digital signals and not PAL. Chris - AE6VK -Original Message- From: Frank Brickle [mailto:[EMAIL PROTECTED] Sent: Thursday, May 04, 2006 8:51 PM To: richard allen Cc: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] 11.025 KHz IF question 44100 is the CD data rate (48000 is the DAT rate) 44100 complex samples/sec - +/-22050Hz passband 22050/2 = 11025 - center of positive freqs You want IF (11025) rather than baseband because soundcards roll off towards 0Hz. That jog it? 73 Frank AB2KT richard allen wrote: Would someone please refresh my memory as to the derivation of the 11. 025 kHz value? Richard, W5SXD ___ 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 ___ 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] SDR keyer port code location
Thanks, all! I seem to now have what I wanted. With a couple of dabs of code, I've added a K1EL option to the Setup/DSP/Keyer/Connections/Primary combo box. When I select that and have my K1EL WinKey plugged into the back of the SDR-1000, I have PTT driven by Ring and the tone keyed by Tip. [I had the definition backwards below.] No hardware modifications required anywhere. It seems to work ok for me, but I am sooo bad at CW I can't really test it at speed. However, the K1EL should now be able to provide a clean PTT bridge over the keyed tone without involving PowerSDR in the problem as much. As I said, I'm not yet quick enough to tell if this does anything to ease the hand-to-ear delays. A sidetone generator off the K1EL ought to eliminate that, I presume. Hardly QSK, but it lets me use another of my gadgets cleanly. Thanks again. Chris - AE6VK -Original Message- From: Eric Wachsmann - FlexRadio [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 19, 2006 12:39 PM To: Christopher T. Day; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] SDR keyer port code location That is correct. Basically either the dot or dash line can be used as a PTT signal. ... -Original Message- From: Christopher T. Day [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 2:40 PM To: [EMAIL PROTECTED]; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] SDR keyer port code location Eric, ... when I have the K1EL connected, I want to treat Tip as PTT and use Ring to key the tone. Chris - AE6VK
Re: [Flexradio] SDR keyer port code location
Eric,
It's a little confusing to me in the schematic. It appears that there is
a Dot signal {Tip}, a Dash signal [Ring] and a PTT signal that is a
diode OR of the two. I think that is what gets feed over the parallel
port to the PC; please correct me if that is wrong. Otherwise, yes, when
I have the K1EL connected, I want to treat Tip as PTT and use Ring to
key the tone.
Chris - AE6VK
-Original Message-
From: Eric Wachsmann - FlexRadio [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 18, 2006 11:53 AM
To: Christopher T. Day; FlexRadio@flex-radio.biz
Subject: RE: [Flexradio] SDR keyer port code location
Christopher,
I believe you will only find access to 2 signals from the Key line on
the back of the SDR-1000. Perhaps this is all that you need (PTT +
Tone).
Bill hit the nail on the head though with his source code
recommendations. Let us know if you have specific questions. It sounds
like what you want to do is to unhook the Dot (or Dash) line and make it
a PTT line while the other line sends the tone.
Eric Wachsmann
FlexRadio Systems
Re: [Flexradio] Am I Missing Something? Or Is Everyone?
Jim, Welcome to the world of large physics experiments - everyone is a developer of their bit and a user of everyone else's bits. Chris - AE6VK P.S. - And if you ask, How do we handle that?, the answer is Badly. -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 7:40 AM ... This seems to be a very different model from most purely software products, where you have coders and users, and not much inbetween. Jim
Re: [Flexradio] Apparent Success..........
Bob, Terminology: A cache hit is a _successful_ retrieval from the cache; a cache miss requires a fill from backing memory. That means a cache miss causes a performance hit, i.e., reduction. I think you want this to read: ... We would like to do everything we possibly can to ELIMINATE cache misses so the DSP can reside in cache memory for as long as possible without a miss. This can and will include the performance hit that can (but not necessarily will) occur if processor affinity is not maintained, causing a complete cache flush. ... Chris - AE6VK -Original Message- From: Robert McGwier [mailto:[EMAIL PROTECTED] Sent: Monday, April 17, 2006 1:09 PM To: Harold Bissonnet ... We would like to do everything we possibly can to ELIMINATE cache hits so the DSP can reside in cache memory for as long as possible without a hit. This can and will include the massive cache hit that can (but not necessarily will) occur if processor affinity is not maintained. ...
[Flexradio] SDR keyer port code location
Hi. I finally got my VS .NET`2003 working and now want to do a little fiddling. In particular, I would like to be able to plug my K1EL WinKey directly into the back of the SDR-1000 - into what comes up as the SDR port on the new keyer setup tab. I think from the SDR-100 circuit diagrams that it should be possible to separate the PTT signal from the Dot and Dash signals. The reason I want to do this is that the K1EL can automatically create a PTT signal on its tip output line and a single keyed string on the ring output. I want to set things up similarly to what would be possible using the CAT tab's PTT control along with Iambic disabled in the new keyer. If that makes any sense to anybody who knows the right place to look in the source, I'd appreciate a pointer. Thanks. Chris - AE6VK -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20060415/82528a02/attachment.htm
Re: [Flexradio] SDR keyer port code location
Bill, Thanks. Is that cwkeyer.cs or cwkeyer2.sc or both? [Coffee still taking hold.] Chris - AE6VK -Original Message- From: Bill Tracey [mailto:[EMAIL PROTECTED] Sent: Saturday, April 15, 2006 10:07 PM To: Christopher T. Day; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] SDR keyer port code location Some places to look: PollPTT in console.cs all of cwkeyer.cs - KeyThread.cs probably the most interesting There's also some stuff in DttSP but I don't think you'd have to go in there for adding support for a new hardware gizmo. Actually just starting to look at adding this support for the FPGA gizmo -- we're looking to have the key hooked to the FPGA and sending the keying data over the USB port so need to figure out how to hook it in. Cheers, Bill (kd5tfd) At 11:42 PM 4/15/2006, Christopher T. Day wrote: ... If that makes any sense to anybody who knows the right place to look in the source, I'd appreciate a pointer. Thanks. Chris - AE6VK
Re: [Flexradio] Am I Missing Something? Or Is Everyone?
Has any thought been given to setting up a Continuous Integration system for the PowerSDR software? Then there would always be the latest and greatest - and maybe broken - alpha for developers and eager users to try. http://en.wikipedia.org/wiki/Continuous_integration http://sin.tigris.org/ Chris - AE6VK -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 9:49 AM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Am I Missing Something? Or Is Everyone? I have a Flex on order,.. It is due to ship in a couple of three weeks. Part of my purchasing decision was to have ready access to source and Beta releases. I'll call Gerald Monday moring and explain that he can cancel my order if I have to deal with SVN. So there! IS that a simple enough business decision for Gerald? -Dan K6KDK
Re: [Flexradio] Am I Missing Something? Or Is Everyone?
Oops. Sorry, I obviously should have actually _looked_ at the repository before sending my message. Chris - AE6VK -Original Message- From: Robert McGwier [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 10:34 AM To: Christopher T. Day Cc: [EMAIL PROTECTED]; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Am I Missing Something? Or Is Everyone? We really are doing a poor job of communicating aren't we? That is exactly what you get with svn. ... Bob Christopher T. Day wrote: Has any thought been given to setting up a Continuous Integration system for the PowerSDR software? ...
Re: [Flexradio] Am I Missing Something? Or Is Everyone?
If all you want are the binaries, you can simplify this still further by using svn://206.216.146.154/svn/repos_sdr_windows/PowerSDR/trunk/bin/Release in Tim's instructions. That way you will only download the repository sub-folder with the Release binaries in it. SVN does not require anyone to download the whole repository. Chris - AE6VK -Original Message- From: w2agn [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 11:15 AM To: Robert McGwier Cc: Christopher T. Day; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Am I Missing Something? Or Is Everyone? Robert McGwier wrote: We really are doing a poor job of communicating aren't we? That is exactly what you get with svn. The tool is easy and free. It is also available from tigris. PLEASE people. Google tortoise svn. Download the windows installer. Do NOT change the little box marked with an X in the configuration set up where you are offered the ability to make modifications that will help you build MS Frontpage web site. This will render it useless for our purposes and it is a hack for Frontpage and non standard. Follow Tim's instructions. You will have everything I worked on yesterday immediately. Bob OK, I am definitely NOT a software expert, but I did just what Bob said, downloaded Tortoise, followed the instructions, got the new binary, and viola' it ran! Since I didn't want the Source stuff (not ready to try compiling yet!) I cancelled downloading after the bin was downloaded. I made a new folder under /Program Files/Flexradio/Beta1.6.1 and put all the release there, and then I could dump all the extraneous stuff to save disk space. Not difficult at all. -- _____ / \ / \ / \ / \ / \ John L. Sielke ( W )( 2 )( A )( G )( N ) http://w2agn.net \_/ \_/ \_/ \_/ \_/ http://www.blurty.com/users/w2agn CRUSTY OLD CURMUDGEON, AND PROUD OF IT
Re: [Flexradio] MixW2 running on SDR1K ?
How come there is no pointer to Bob's paper under the Expert setups list on the Flew Radio Web site? Would be really useful. Thanks. Chris - AE6VK -Original Message- From: Charles Greene [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 2:38 PM To: Dave Meitzen; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] MixW2 running on SDR1K ? Dave, If you set up the SDR and MixW EXACTLY as Bob does on his paper on the web site: How to Setup VAC with PowerSDR, it will work every time.The only deviations you should have are in the com port numbers: make them reflect what you actually have running. 73, Chas, W1CG At 05:28 PM 4/16/2006, Dave Meitzen wrote: Is there a good source (in one place) to get information for running MixW2 on the SDR1K? I have VAC running and get audio to the MixW2 but it does not seem to pick out the PSK31 -- lots of hash ?? Have a Great Easter -- I am showing my grandkids SDR1K !! They like it too. Thanks Dave ___ 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] Am I Missing Something? Or Is Everyone?
Or that only one person has the authority and access rights to make such a Beta tag. There should be some sort of testing required or it's hardly a beta, after all. The tester could be the one to declare the beta. Chris - AE6VK -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 8:12 PM To: Christopher T. Day; [EMAIL PROTECTED]; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] Am I Missing Something? Or Is Everyone? At 12:16 PM 4/16/2006, Christopher T. Day wrote: Jim, Keeping track of the betas is _really_ easy in SVN. Assuming you have write access to the SVN repository, right click on the mainline trunk folder and select Copy to In the URL that comes up, replace trunk with tags/beta name and let 'er rip. Bingo! A beta version. But that presumes that the development team is being good about properly labeling tags, etc. Note that this DOES NOT actually copy the files, only the repository version at the instant of beta creation. When files are downloaded from the beta directory of the repository, SVN reconstructs the proper file versions.
Re: [Flexradio] [SDR-1000] PreSonus Firebox Output Voltage Descrepancies
Who's spec is the 6.39Vac? Presonus or Flex? I'm wondering because I had similar situation with my MP3+. The Flex database that preset the value thought I should be getting 2.23 Vac whereas I measured only 0.7. Is there something wrong with the default database, maybe? Chris - AE6VK -Original Message- From: root [knesbitt] [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 05, 2006 3:40 PM To: FlexRadio@flex-radio.biz; [EMAIL PROTECTED] Subject: [SDR-1000] PreSonus Firebox Output Voltage Descrepancies Folks, who's all measured their audio output voltages on the Firebox using the sound card output voltage test? I just had opportunity to run this test and found my Firebox is only pumping out 2.2 vac rather than the spec'ed 6.39 vac. Been working with [EMAIL PROTECTED] in an attempt to understand whats going on. Apparently others have noted this disparity in card output. Curious to know what other Firebox owners are finding. This is a potentially serious matter given the large disparity between the default value and the recorded level. I'm hesitant to apply this new value to the console settings for fear the level reverts to its higher output. To date however I have found nothing software/mixer-wise which would account for this. Kirb - VE6IV -- Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/SDR-1000/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Flexradio] [SDR-1000] RE: PreSonus Firebox Output Voltage Descrepancies
Is the hard clipper _only_ applied to Firebox systems, or am I risking my MP3+ system as well? Thanks. Chris - AE6VK -Original Message- From: Eric Wachsmann - FlexRadio [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 05, 2006 3:25 PM To: 'root [knesbitt]'; FlexRadio@flex-radio.biz; [EMAIL PROTECTED] Subject: [SDR-1000] RE: [Flexradio] PreSonus Firebox Output Voltage Descrepancies I went back to the drawing board and tried to measure this myself and had trouble. Apparently our hard clipper that we added for the FireBox to prevent overdriving the transmitter is the culprit. Rather than a single tone @ 600Hz at 6.39VAC, you will get something like a square wave (nasty distortion) at 1.97VAC. To see the true full value, you can use the following procedure VERY CAREFULLY: 1. Disconnect the audio cable so that it is nowhere near the SDR-1000. ;) 2. Plug in a value to the V RMS right by the test button that is below 1.5V. 3. Run the test. 4. MAKE SURE to change the value back to the default setting before plugging the cable back into the radio!!! We will address this in the software in future releases. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of root [knesbitt] Sent: Wednesday, April 05, 2006 5:40 PM To: FlexRadio@flex-radio.biz; [EMAIL PROTECTED] Subject: [Flexradio] PreSonus Firebox Output Voltage Descrepancies Folks, who's all measured their audio output voltages on the Firebox using the sound card output voltage test? I just had opportunity to run this test and found my Firebox is only pumping out 2.2 vac rather than the spec'ed 6.39 vac. Been working with [EMAIL PROTECTED] in an attempt to understand whats going on. Apparently others have noted this disparity in card output. Curious to know what other Firebox owners are finding. This is a potentially serious matter given the large disparity between the default value and the recorded level. I'm hesitant to apply this new value to the console settings for fear the level reverts to its higher output. To date however I have found nothing software/mixer-wise which would account for this. Kirb - VE6IV -- ___ 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 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/SDR-1000/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Flexradio] HF Packer at Dayton
Virgil will be there with examples and info on HF SuperPacker PreAmp and HF SuperPacker Pro. I strongly recommend people check his stuff out - looks like a perfect match to SDR-1000 1W. [From the hfprojects Yahoo Group] I plan to have a vendor table on Friday night for FDIM 2006 Event. It will be at the Holiday Inn (Big QRP group) Holiday Inn 2800 Presidential Drive Fairborn Dayton OH 45324 This is your invitation and opportunity to see the SDR related HF SuperPacker PreAmp and the HF SuperPacker Pro Amplifier. Ken, WB6MLC, (HF Packer fame) will be there. We are taking signups now for all projects and I can bring them with me to the show. I currently have no other booth or setup planned. I can be reached by email at info @ hfprojects.com. I would like to see you there. 73 K5OOR - Virgil
Re: [Flexradio] [hpsdr] vCOM Virtual Serial Driver - New Installer and Configurator
Phil, You're sure this isn't an April Fool's Joke? No doubt I'm the fool, but shouldn't the virtual COM ports I set up in vCOM show up as selectable ports on the CAT Control Port dropdown list? All I ever see in the dropdown list are a fixed set of four ports all below 8. What am I missing? Thanks. Chris - AE6VK -Original Message- From: Philip Covington [mailto:[EMAIL PROTECTED] Sent: Friday, March 31, 2006 2:58 PM To: Flex Radio; High Performance Software Defined Radio Discussion List Subject: [hpsdr] vCOM Virtual Serial Driver - New Installer and Configurator * High Performance Software Defined Radio Discussion List * Hi all, As a late Christmas present (or early April Fool's Joke?) I have uploaded a new version of the vCOM virtual serial port driver to my website. It now includes an installer and configurator program. No longer will you have to manually edit the inf file! The graphical configurator allows you to create/delete virtual com port pairs on the fly *without* having to reboot. The installer is an executable which will handle everything for you. You do not have to select which folder the vCOM.sys file is in, and you will not have to run the batch files. The installer takes care of all of that. After the installer successfully runs you can configure your virtual com ports by running the configurator. http://www.philcovington.com/SDR.html 73 de Phil N8VB ___ HPSDR Discussion List To post msg: [EMAIL PROTECTED] Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org HPSDR web page: http://hpsdr.org Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
Re: [Flexradio] Vcom serial probable confusion
Bob, What, exactly, does consumed mean? If I make a pair of Ports through the latest vCOM - Port numbers that have never been defined for my machine before - and assign nothing to them, they do NOT show up in the CAT Port list when I start PowerSDR 1.6.0. Any ideas where they might be going? Thanks. Chris - AE6VK -Original Message- From: Robert McGwier [mailto:[EMAIL PROTECTED] Sent: Sunday, April 02, 2006 11:23 AM To: Reflector Flex-Radio Subject: [Flexradio] Vcom serial probable confusion PowerSDR, upon start, attempts to open all visible ports. *_/*If they are already consumed, we do not show them, we only show those that are available for you to assign**/_. If the port is already consumed on the other end by (say) MixW, or HRD, etc., it will not show up in the list. Only the end of the cable that is available to you is shown. Bob -- 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! ___ 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] Default Output Voltage for MP3+
I don't know if this is only in Beta 19, but on the Setup/Audio/Sound Card tab, the Output Voltage defaults to 2.23, whereas I measured 0.7 on my MP3+. The program tells me this is way outside the statistics for this audio device, but 0.7 makes SDR-1000 transmitter work. Chris - AE6VK
Re: [Flexradio] Audio spur at 4.7KHz?
Make that -95dbm, not -110dbm. My eyes must be drooping on a right-to-left retrace. Chris - AE6VK -Original Message- From: Christopher T. Day Sent: Sunday, March 26, 2006 6:23 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Audio spur at 4.7KHz? I've just noticed what I'll call an audio spur on my SDR-1000/PowerSDR beta19 system. That is, there is on the Panadapter display, with spur reduction turned off, a fixed peak of about -110dbm at about +4.7KHz from the red line. With spur reduction turned off, it seems to be the same magnitude and the same place on the display no matter what band or mode I'm on. It also doesn't seem to matter if the antenna or a dummy load is attached. Mostly, it is outside the filter bands, but it seems odd. If spur reduction is turned on, it jumps around with tuning, but is always there. This doesn't seem to be the behavior of other peaks I've put down to spurs from the DDS. Any theories? BTW, the primary TV and FM transmission tower for the San Francisco bay area is literally in my back yard, no more than 100' away. Overload and IMD theories allowed. Set up: MP3+, Pentium M 1.86 GHz, 1GB RAM (Dell Latitude D810 laptop), XP-Pro, SDR-1000 four-board stack (no PA), USB-to-parallel adapter, PowerSDR Beta v1.4.5.19, Elecraft T1, NJQRP Halfer end-fed halfwave thrown out the window and hung from a tree. Thanks. Chris - AE6VK ___ 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] Tuning precautions for RFE driver
Does anyone have words of wisdom about how robust the driver on the RFE board is to high SWR? I'm thinking of using an end fed half-wave antenna through an Elecraft T1 tuner. The tuner needs about 500mW to tune and I'm wondering if the RFE can take the high SWR at the start. Thanks. Chris
Re: [Flexradio] SVN tags was Re: Preview 18 is Released
Bob, Any apologies should be mine. I meant no criticism; just observing that there are many ways to do things and trying to help out Jim. Sorry. Chris - AE6VK ... I make no apologies. This was rolled out before we were ready to answer the demands of all. We are fully cognizant of its non standard layout and you may expect it to be fixed. Bob -- 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! ___ 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] SVN tags was Re: Preview 18 is Released
The way one does a tag is SVN is to copy, within the repository, the whole tree at the moment of release into a release-labeled directory in the tags branch of the repository, which is usually a sibling of the trunk directory. That way, there is a full tree labeled by the directory name. /repository /trunk /code tree /tags /release-1 /release copy of code tree DON'T PANIC. SVN copies are extremely shallow. Since every change to the repository results in an increment of the serial number for the _whole_ repository, all the above copy really does is copy the serial number of the repository into the tag subdirectory. It makes it very convenient and inexpensive to tag things. -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Saturday, March 18, 2006 4:22 PM To: N3EVL; FlexRadio@flex-radio.biz Subject: [Flexradio] SVN tags was Re: Preview 18 is Released At 03:13 PM 3/18/2006, N3EVL wrote: I'm not an expert on such matters, but I believe SVN can assist here if the code is tagged at the time of a new release. This should permit later retrieval of all of the modules corresponding to a particular tag, say Rev 18. That's exactly the sort of thing I was wondering about. As you say, CVS has a way to relate internal codebase revision number to External release version number. Especially as the split between UI and dsp backend proceeds, one might (should) want to build a v X.5 UI to test against a v Y.4 DSP, etc. Currently, the entire source tree is treated as a giant mass with serial numbers assigned to each checkin. I can see the serial numbers rapidly becoming useless by themselves. I'm not too familiar with SVN (yet) - we were using CVS at work and recently migrated to Perforce but based on SVN's CVS heritage I'd expect it to be similar. I'll check with our cvs guru on Monday and see if tagging will help in this respect. I found this SVN link which looks interesting: http://svnbook.red-bean.com/en/1.1/svn-book.pdf Under chapter 4 there is a section on tags. That looks exactly like what I was thinking of... As the author said, After all, it's not so easy to remember that release-1.0 of a piece of software is a particular subdirectory of revision 4822. Jim ___ 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] SVN tags was Re: Preview 18 is Released
Jim, SVN is long on mechanism and short on policy; you can do almost anything you'd like to, which is not a whole lot of help deciding what it is you actually do want to do. Looking at the PowerSDR _repository_ you have: /PowerSDR /branches empty /Source /lots of stuff /trunk empty a few individual files What I would recommend - so that people's current checkouts aren't disturbed - is to regard the /Sources branch as the trunk, get rid of the empty /trunk branch, make a new sibling of /Sources called /tags and make tag copies there. By my definition, /tags should contain particular points along a development track with no further modifications to the tagged items themselves, e.g., continue to check into the /Sources branch and tag the betas in the /tags branch. On the other hand, when development really goes on a separate track - the best example is bug fixes to a previous release that you are still supporting in the field - make a copy of the release into the /branches branch and check in the release-specific fixes to the branched copy. I hope that helps. Chris - AE6VK P.S. - Note that with this repository structure, you want to do your normal checkout starting at /Sources or the particular tag/branch of interest, not the top of the repository. Otherwise, you will get all tags and all branches, which will not be what you want. -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Saturday, March 18, 2006 4:50 PM To: Christopher T. Day; N3EVL; FlexRadio@flex-radio.biz Subject: RE: [Flexradio] SVN tags was Re: Preview 18 is Released At 04:40 PM 3/18/2006, Christopher T. Day wrote: The way one does a tag is SVN is to copy, within the repository, the whole tree at the moment of release into a release-labeled directory in the tags branch of the repository, which is usually a sibling of the trunk directory. That way, there is a full tree labeled by the directory name. /repository /trunk /code tree /tags /release-1 /release copy of code tree DON'T PANIC. SVN copies are extremely shallow. Since every change to the repository results in an increment of the serial number for the _whole_ repository, all the above copy really does is copy the serial number of the repository into the tag subdirectory. It makes it very convenient and inexpensive to tag things. Excellent. And from a casual reading of the manual, it looks you could, for instance, copy the stuff from just dttsp calling it DSP-1.0, etc. However, it looks like my copy of the source is structured thus: PowerSDR /.svn /trunk /.svn /branches /.svn /Source /.svn /Console /DttSP /FFTW ... ... So there's nothing in trunk (other than the .svn directory, which I assume I'm not supposed to be tampering with). Or, maybe you are referring to how it's structured *on the repository*, as opposed to on a client.
Re: [Flexradio] yahoo, etc.
I suggest a separate group for discussions on whether there should be separate groups. Discussing it here is diluting useful information all around. Chris -AE6VK -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Monday, March 13, 2006 9:44 AM To: flexRadio@flex-radio.biz Subject: [Flexradio] yahoo, etc. related to Ken's comment about the success of HFPack yahoo group: Indeed, they work well. However HFpack, and related groups, are more generic and not tied to a particular hardware widget. The facilities provided by HFpack are not provided by any other venue. In the Flex-radio SDR1000 case, that's not so clear: Flex has a web site, with forums, file areas, etc. If interest in SDRs as a generic entity grows, I think it would be time to look to more generic sites. I also note that HFPack is moderated, which makes a big difference. If Flex stops being supportive, then I'd also see the need for an independent venue (much like the numerous forums for car makes.. some useful, some less so) Re Frank's comments about forking: Yes, forking is a time honored tradition of Open Source, however, as Eric Raymond points out in Cathedral and Bazaar: forking is strongly discouraged by societal forces within the F/OSS community. A manifestation of that societal force is the numerous no yahoo group posts. re various comments along the let a thousand flowers bloom lines: I am all in favor of trying lots of new things. The fear (perhaps unfounded) is that Flex (the participation of who is essential) will find themselves spread too thin, trying to keep up with them all, and wind up overwhelmed. re Stan's comment on license status: Now we are a real e-community! we've got ad hominem attacks and flame wars heating up. Let the entertainment begin! 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] documents for sdr software
Sdr1000rev1a.pdf: On the second page, two of the notes lie across the outline box of do_rx_pre - Is this data, or a function call? Not clear how filtering routines Not serious, but a little messy. Sdr1000rev1b.pdf: This is the same as the second page of Sdr1000rev1a.pdf. So, first file has both pages and second file has only second page. Chris - AE6VK -Original Message- From: Jim Lux [mailto:[EMAIL PROTECTED] Sent: Sunday, March 12, 2006 5:42 PM To: flexRadio@flex-radio.biz Subject: [Flexradio] documents for sdr software I just tried making some pdfs of my visio drawings. If someone could try and view them and see whether they render ok, I'd appreciate it. http://home.earthlink.net/~w6rmk/sdr1000/sdrdocs.htm James Lux, P.E. Spacecraft Radio Frequency Subsystems Group Flight Communications Systems Section Jet Propulsion Laboratory, Mail Stop 161-213 4800 Oak Grove Drive Pasadena CA 91109 tel: (818)354-2075 fax: (818)393-6875 ___ 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] [Xylo-SDR] Proof-of-concept successful!
Could you use standard USB cables with a type A connector on the end where you have room and a type mini-B on the end where you don't? USB is a single differential twisted pair with additional gnd and Vbuss wires rated to 420 Mbits/second. Be sure it's protected if someone accidentally plugs in a real USB at either end. Chris - AE6VK From: Phil Harman [mailto:[EMAIL PROTECTED] Sent: Sunday, January 29, 2006 12:31 AMTo: FlexRadio@flex-radio.biz; Xylo-SDR DiscussionSubject: [Xylo-SDR] Proof-of-concept successful! This weekend Bill, KD5TFD, completed his integration of our Wolfson A/D + Xylo FPGA + USB interface into PowerSDR. This proof-of-concepth has been completely successful and we are eagerly pushing forward to the next phase of the project. The screen shot below is of our 48k 16 bit full duplex sound card running in PowerSDR using an SDR1000 on 20m http://www.hamsdr.com/dnld.aspx?id=126 The noise floor of the Wolfson A/D in this configuration is -140dBm in a 500z bandwidth. The next steps are to increase the sampling rate to 192kHz and 24 bits. Bill is also going to implement his system to overcome the frequency error and drift of the 200MHz Valpey Fisher oscillator. He is using a GPS 1Hzor 10kHz clock to measure the frequency of the DDS output and pass this back over the same USB signal that carries the digital audio. A software routine in PowerSDR will then compare the actual DDS frequency to the desired frequency and make the necessary correction in software. If this works OK then he will look at counting the 200MHz oscillator directly, although picking this off the SDR1000 hardware is bit more involved than the DDS outputhence the reasonfor starting with the DDS output. We are looking at deriving an LVDS signal from the 200MHz oscillator and if anyone has any suggestions as to suitable connectors to use with a single LVDS signal then we would appreciate the information. There is still plenty of room for more C++ and FPGA developers if you are interested in assisting with the project - those willing to lay out PCB's will be especially welcome! 73's Phil Vk6APH
Re: [Flexradio] [Xylo-SDR] Proof-of-concept successful!
On further investigation, I discover that there is also a mini-A style connector. The mini-A and mini-B connectors are for things like cellphones and PDAs, so are pretty small. Chris - AE6VK From: Christopher T. Day Sent: Tuesday, January 31, 2006 9:30 AMTo: Xylo-SDR Discussion; FlexRadio@flex-radio.bizSubject: Re: [Xylo-SDR] Proof-of-concept successful! Could you use standard USB cables with a type A connector on the end where you have room and a type mini-B on the end where you don't? USB is a single differential twisted pair with additional gnd and Vbuss wires rated to 420 Mbits/second. Be sure it's protected if someone accidentally plugs in a real USB at either end. Chris - AE6VK From: Phil Harman [mailto:[EMAIL PROTECTED] Sent: Sunday, January 29, 2006 12:31 AMTo: FlexRadio@flex-radio.biz; Xylo-SDR DiscussionSubject: [Xylo-SDR] Proof-of-concept successful! This weekend Bill, KD5TFD, completed his integration of our Wolfson A/D + Xylo FPGA + USB interface into PowerSDR. This proof-of-concepth has been completely successful and we are eagerly pushing forward to the next phase of the project. The screen shot below is of our 48k 16 bit full duplex sound card running in PowerSDR using an SDR1000 on 20m http://www.hamsdr.com/dnld.aspx?id=126 The noise floor of the Wolfson A/D in this configuration is -140dBm in a 500z bandwidth. The next steps are to increase the sampling rate to 192kHz and 24 bits. Bill is also going to implement his system to overcome the frequency error and drift of the 200MHz Valpey Fisher oscillator. He is using a GPS 1Hzor 10kHz clock to measure the frequency of the DDS output and pass this back over the same USB signal that carries the digital audio. A software routine in PowerSDR will then compare the actual DDS frequency to the desired frequency and make the necessary correction in software. If this works OK then he will look at counting the 200MHz oscillator directly, although picking this off the SDR1000 hardware is bit more involved than the DDS outputhence the reasonfor starting with the DDS output. We are looking at deriving an LVDS signal from the 200MHz oscillator and if anyone has any suggestions as to suitable connectors to use with a single LVDS signal then we would appreciate the information. There is still plenty of room for more C++ and FPGA developers if you are interested in assisting with the project - those willing to lay out PCB's will be especially welcome! 73's Phil Vk6APH
Re: [Flexradio] [Xylo-SDR] Proof-of-concept successful!
Chapter 7 of the USB 2 spec has this information in great detail. Twited pair cable impedence is nominal 90 ohms. Given the popularity of USB, surely here must be driver chips id LVDS can't do it directly. Chris - AE6VK From: KD5NWA [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 31, 2006 9:54 AMTo: Flex RadioCc: Xylo-SDR DiscussionSubject: Re: [Xylo-SDR] [Flexradio] Proof-of-concept successful! LVDS is made for a tightly twisted pair with 100 Ohm impedance, a pair in a CAT5e cable is exactly what is meant to be used with. Does anyone know what the characteristic impedance of a USB cable is? If not, then it's best to stay away from anything unknown.It's a transmission line from the transmitter to the receiver and should be treated as such including impedance matching so you do not get reflections, shortcuts will lead to phase noise.As far as a connector, a CAT5e RJ45 connector is meant for that impedance, and does an excellent job.At 11:30 AM 1/31/2006, Christopher T. Day wrote: Content-Type: multipart/alternative; boundary="_=_NextPart_001_01C6268C.0101442A"Content-Class: urn:content-classes:messageCould you use standard USB cables with a type A connector on the end where you have room and a type mini-B on the end where you don't? USB is a single differential twisted pair with additional gnd and Vbuss wires rated to 420 Mbits/second. Be sure it's protected if someone accidentally plugs in a real USB at either end. Chris - AE6VK From: Phil Harman [ mailto:[EMAIL PROTECTED]] Sent: Sunday, January 29, 2006 12:31 AMTo: FlexRadio@flex-radio.biz; Xylo-SDR DiscussionSubject: [Xylo-SDR] Proof-of-concept successful!This weekend Bill, KD5TFD, completed his integration of our Wolfson A/D + Xylo FPGA + USB interface into PowerSDR. This proof-of-concepth has been completely successful and we are eagerly pushing forward to the next phase of the project.The screen shot below is of our 48k 16 bit full duplex sound card running in PowerSDR using an SDR1000 on 20m http://www.hamsdr.com/dnld.aspx?id=126The noise floor of the Wolfson A/D in this configuration is -140dBm in a 500z bandwidth. The next steps are to increase the sampling rate to 192kHz and 24 bits. Bill is also going to implement his system to overcome the frequency error and drift of the 200MHz Valpey Fisher oscillator. He is using a GPS 1Hz or 10kHz clock to measure the frequency of the DDS output and pass this back over the same USB signal that carries the digital audio. A software routine in PowerSDR will then compare the actual DDS frequency to the desired frequency and make the necessary correction in software. If this works OK then he will look at counting the 200MHz oscillator directly, although picking this off the SDR1000 hardware is bit more involved than the DDS output hence the reason for starting with the DDS output.We are looking at deriving an LVDS signal from the 200MHz oscillator and if anyone has any suggestions as to suitable connectors to use with a single LVDS signal then we would appreciate the information.There is still plenty of room for more C++ and FPGA developers if you are interested in assisting with the project - those willing to lay out PCB's will be especially welcome!73's Phil Vk6APH ___FlexRadio mailing listFlexRadio@flex-radio.bizhttp://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 Cecil BayonaKD5NWAwww.qrpradio.comI fail to see why doing the same thing over and over and getting the same results every time is insanity: I've almost proved it isn't; only a few more tests now and I'm sure results will differ this time ...
Re: [Flexradio] Xylo Update
Ah. One of the things gone with the Forums is the TeamSpeak link. Remind me when the get-together is tonight? Chris AE6VK From: ecellison [mailto:[EMAIL PROTECTED] Sent: Friday, December 02, 2005 12:20 PMTo: 'Jeff Anderson'; flexradio@flex-radio.bizSubject: Re: [Flexradio] Xylo Update Jeff, Lyle, Steve, Phillip and others Thanks for the wonderful comments. IT IS FUN! Will discuss on Teamspeak tonight also. I know PhilH will be there and give us an update on the work he was doing yesterday. Xylo-Phreaks dont miss it, more to come.. Here are some of the references which came off Phil Covingtons N8VBs blog: Source of the Xylo Kit: http://www.fpga4fun.com/board_Xylo.html Verilog tutorial - look at ONLINE MANUAL - http://www.see.ed.ac.uk/~gerard/Teach/Verilog/ More Verilog sites from N8VB http://www.asic-world.com/verilog/veritut.html http://www.ece.cmu.edu/~thomas/VSLIDES.pdf http://www.web-ee.com/primers/files/VlogIntro.pdf http://www.doulos.com/knowhow/verilog_designers_guide/ http://www.sutherland-hdl.com/on-line_ref_guide/vlog_ref_top.html http://www.eecs.harvard.edu/cs141/resources/verilog-tutorial.pdf http://www.doe.carleton.ca/~shams/97350/PetervrlK.pdf Also check out Opencores, Which is basically free hardware, with a public domain buss between cores called Wishbone. http://www.opencores.org/ C U later Eric2 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jeff AndersonSent: Friday, December 02, 2005 2:04 PMTo: flexradio@flex-radio.bizSubject: Re: [Flexradio] Xylo Update Hi Bob ( others), Once you get into it, you'll probably find that FPGA programming is not that difficult, and, given the power of the tools, can be much less frustrating than straight digital design. I was dragged into the Verilog world a few years ago for work, and have been using the Altera tools exclusively (initially MaxPlusII, and now Quartus). I'll admit that I'm not expert on the tools, but the Quartus environment supplies me with all I need, and I haven't had the need (yet) to learn other tools or techniques (including Test Benches). You'll find that being able to simulate your designs on the computer (with Quartus)is a huge plus. Functional simulations are timing-diagram driven - you "draw" your inputs, press a "button", and the tool will plot the outputs you've selected. Makes the debug process *much* faster. And Altera's SignalTapII feature, which allows you to "create" a logic analyzer within a part that's powered-up and running so that you can monitor its internal operation, is invaluable when working with BGA parts buried traces. However - it requires a JTAG interface to the part and a special interface module (I'm using Altera's "USB-Blaster). But if you aren't working with a BGA part, you don't have to use SignalTap. In the past, when I didn't have SignalTap to use, I'd write special code to route "selected"internal signals to unused (or seldomly-used) I/O pins so that I could monitor them with test equipment. Anyway - please consider me a resource as you start to work on your projects. Again, I'm no expert (not by any stretch of the imagination), but I have written Verilog code for a few projects, and I have used the Altera tools (which can be obscure at times), so I might be able to lend a hand if someone runs into a stumbling block. (By the way - Quartus has an "archive" feature that allows convenient passing of a Project from one person to another). 73, - Jeff, WA6AHLSteve Nance [EMAIL PROTECTED] wrote: Lyle,Speaking for all us newbie's, thanks for the FPGA overview and run down onresources. Looks like we have a lot of reading/research to do to learn aboutthe FPGAs and related hardware and software.As you mentioned my background was also in discrete TTL logic hardwaredesigns and I can see a different mindset is required for today's devices.Looks like a lot of work, but what fun.73,Steve - K5FR
Re: [Flexradio] Another Xylo fiddler
Apparently, I out-voted myself somehow. I couldn't find any free Subversion hosters quickly - N8VB's suggestion never answered my browser - so I went ahead and applied for and received a SourceForge project. I just got it today and I haven't run one of these before, but I've used them a moderate amount. They are certainly the Big Mozilla of Open Software hosting. CVS, unfortunately, but one can't have everything. I cast the request as someplace where we could start with an Open, i.e., GPL, VHDL for a replacement PIO board for the SDR-1000, but suggested to the powers-that-be that all of PowerSDR might wind up there if folks want it to. As long as all that software remains under the GPL, that should be ok with them. The Project seems to come with a CVS server, a Web server - http://softwareradio.sourceforge.net [I haven't put anything there yet.] - access to compile farms, project forums, and a whole lot of tools I haven't had a chance to look at yet. It may take a day or so for the domain name to percolate out into DNS land. The Project name is Software Radios, which was not the best choice since there seems to also be a Software Radio project. Oh, well. So, any interest is using this resource? Chris AE6VK P.S. - I won't give up on Subversion, but use it on my own machine and check code in periodically into the SourceForge CVS. -Original Message- From: Christopher T. Day Sent: Thursday, December 01, 2005 7:42 PM To: ecellison; [EMAIL PROTECTED]; John Denson Cc: FlexRadio Reflector Subject: Re: [Flexradio] Another Xylo fiddler If I get a vote, I want to cast it, several times, if possible, for Subversion over CVS. It is aa much improved update of the same idea. Download from http://subversion.tigris.org/. For Windows users, Also download http://tortoisesvn.tigris.org/, a very easy-to-use GUI for Subversion that integrates directly into the Explorer. Chris AE6VK
Re: [Flexradio] Website
I take it the web provider didn't do backups? Are you sure you want to stick with them? A copy of the backup would give the future historian something to dig through. Chris AE6VK -Original Message- From: Duane - N9DG [mailto:[EMAIL PROTECTED] Sent: Thursday, December 01, 2005 7:25 PM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Website Indeed it is very unfortunate to have lost all the great information in the forums. Much of the information there would have been a gold mine for the author who will be writing a book about the early beginnings of Flex-Radio and how the SDR-1000 became the genesis of a major redefinition of how ham radio equipment is designed and used. You know the book that will be written some 30 years after Flex-Radio supplants the so called big three as being the most popular radio brand that hams buy :). Duane1 - I think :) N9DG
Re: [Flexradio] Another Xylo fiddler
If I get a vote, I want to cast it, several times, if possible, for Subversion over CVS. It is aa much improved update of the same idea. Download from http://subversion.tigris.org/. For Windows users, Also download http://tortoisesvn.tigris.org/, a very easy-to-use GUI for Subversion that integrates directly into the Explorer. Chris AE6VK -Original Message- From: ecellison [mailto:[EMAIL PROTECTED] Sent: Thursday, December 01, 2005 4:20 PM To: [EMAIL PROTECTED]; 'John Denson' Cc: 'FlexRadio Reflector'; [EMAIL PROTECTED] Subject: Re: [Flexradio] Another Xylo fiddler Larry et.al. Well, I think we have about 8 Xylo-Phreaks at the moment who have jumped into the swim. That may be enough to get beyond the 'playing' stage for some further planning. It is a fairly inexpensive fun gadget to play with in any event, and if you have any electronics and logic hardware experience it is a 'hardware magic slate', as well as CPU and memory, which is VERY FAST and POWERFUL in the first place. If you are such a person, I'd highly recommend the $120 dollar investment just to play. Drag out your old TTL-DTL schematics and past them into a core. I think Phil has just about proven that he can interface the Wolfson via I2S to the High Speed USB device on the Xylo. SO? Where do we go from there? Phil alluded to it in his original message re the Xylo and what he was trying to do, (and if we all can manage to do it): If we assume that the objective is to replace the PIO board. The parallel port (and hole(s) it leaves) are replaced with: Line-In Line-Out Key-In Speaker-Out USB I/O Ethernet I/O (perhaps one or two other high level inputs) The hardware on the FPGA does all the heavy lifting! PowerSDR has FAR less hardware to poll and not miss any events. USB at 480 kbs/sec and even Ethernet at greater speeds give it I/Q and control FAST. So fast in fact, that the designers of modules will probably have to check for race situations. If that is a case CW and sidetone monitor will be a snap, with it's own PID. IMHO Now we need a CVS and a Blog. Are any of you Flexers annoyed by the open discussion on the Reflector? Get Gates! http://www.fpga4fun.com/ Actually they have a pretty fair 100 msps Dual Trace digital oscilloscope too! http://www.fpga4fun.com/digitalscope.html Eric2 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, December 01, 2005 3:05 PM To: John Denson Cc: ecellison; [EMAIL PROTECTED]; 'FlexRadio Reflector' Subject: Re: [Flexradio] Another Xylo fiddler Eric - Yes, in my humble opinion CW is the one weak spot for the SDR that I would sure like to see resolved. A USB connection sounds like a GREAT possibility! John Denson I think the fundamental problem is inserting software into the path. What I would like to see (my better can correct me) is something like this: A new CW mode: 1. The key would be attached to the rig as now. 2. It would NOT be fed back to the software. 3. In this mode, the software puts out a true continuous wave at the frequency of interest. 4. Some clever bit of software or a dedicated PIC either feeds the wave values as they come (if the key is currently depressed) or feeds zero/resets T/R if the key is not depressed. I'm not sure how easy this would be to program (one would presumably need a send and receive thread, in this instance, and they'd have to cooperate on when to listen and when to write data, including the futile moments for the transmit side of it). The other alternative, with a hefty enough PIC on the other side, would be to write a number, representing the frequency offset, and have the PIC provide the CW stream when the switch is on, perhaps including, the element shaping. This would seem entirely plausible as it could presumably all be precomputed at some relevant level for Morse Code sine waves. If any of this really works, it would eliminate all the headaches that come from having Windows as an intermediary to a real time system. I can tell you that no matter how good a job we've done, there's always glitches and while they are much, much better, they still seem to exist. The latest preview 7 is actually a bit behind the previous levels of the keyer, in fact, as there seems to be the occassional stuck on bits where the wave continues after the key is actually off (not connected). At some point, we need a real hardware solution to this one, I think. Or, at least a Windows-free pathway. Larry WO0Z ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
