[Flexradio] CEGet
Im trying to figure out what I need to do to configure CWGet/SDR1000/Delta 44 card. The Delta 44/ SDR 1000 set up I have seems to be working fine for transmit and receive and others can read my transmission fine. The audio Im receiving is great. When I run CWGet while in a Commercial AM station, I get a strong signal indication on CWGet in both the upper and lower windows. When I switch to HF and monitor or transmit CW I get only the faintest indication of a signal or no indication at all. When I do get recognition of CW, there is seldom any indication of any signal in either window. Im running Windows XP Pro. Any ideas as to what I can do to get CWGet to work properly? Richard KE5DLQ
Re: [Flexradio] ATU not tuning
Greetings Christoph, I also experienced the problem you have described when I obtained my SDR-ATU and installed it in the SDR-1000 in May 2005. My version of the ATU did not contain the red and green LED's which indicate the status of the ATU. After several exchanges with Gerald Youngblood, he advised that several of the early ATU Z-100's obtained from LDG were assembled without the addition of these LED's. This I corrected by obtaining the LED's from Gerald at Flex-Radio and installing them on my ATU unit. In order for the ATU to function correctly, you must be using PowerSDR verion 1.4.5 Beta 6 or later due to a software bug discovered in the earlier versions of software. What indication on the RED and GREEN LED's are you observing when you tune the SDR? The problem that I eventually discovered was a solder bridge short on the bottom of the 100W Amp board at the point of the ATU jumper pads. I read a .2 ohm short with the jumper cut and should have read infinity on my digital ohmmeter. I discussed this discovery with Gerald from Flex-Radio and we concluded that a short must exist, Gerald advised the procedure for removing the 100W amp from the SDR case and removal of the printed circuit board from the Amps heat-sink. Upon performing this disassembly I found a blob of solder bridging the jumper pads on the bottom of the 100W Amp circuit board. I removed the solder bridge and reassembled the AMP circuit board with the heat-sink and remounted the Amp in the SDR radio cabinet. The ATU then performed flawlessly when tested subsequent to this troubleshooting and correction. I am presently on Holiday at my future retirement home in Florida until after Christmas, after which my spouse and I return to the U.K. and resume work. Advise if I can be of additional assistance in troubleshooting your ATU unit? 73's, Wally - M0ZAZ. At 09:12 PM 12/4/2005 +0100, you wrote: My ATU is not working properly: I hear the relays but when finished, there was no tuning. Is there a way to test the ATU manually or is there a toubleshooting procedure? I am using the sdr-100O with 100W and ATU installed, purchased in September 05, Delta44, v1.4.5 Beta7. Actually it never worked until now, was not sure from the readings if I still should wait for updates(?). Chris, HB9AJP ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz _ Wallace A. Watson - [EMAIL PROTECTED] _
Re: [Flexradio] Interesting behavior when connected to a dummy load
Title: Interesting behavior when connected to a dummy load Jeff nailed this one on the head. The jumping around is because when spur reduction is turned on, the radio hardware is only tuned every ~3.051kHz. We do the fine tuning using a software oscillator. Also worthy of note is that we use an 11kHz IF. So what you are seeing is the junk around DC on the left side of the spectrum. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tim Ellison Sent: Friday, December 02, 2005 11:23 PM To: flexRadio@flex-radio.biz Subject: [Flexradio] Interesting behavior when connected to a dummy load I was testing tonight into a dummy load and noticed some very peculiar behavior. When connected to the dummy load on 14.179 MHz (USB) I see the noise floor (signal) in the panadapter as a flat line from -10K to +10K Hz at about -145 dBm. That looks good to me Now I change frequency to 14.178 MHz and I see the signal rise to -130 dBm between -10K and -9.5K Hz. It is flat at -145dBm across the rest of the spectrum. Looks like more noise on the low end. Not so good. If I change the frequency the to 14.177 MHz I see the signal rise to -113 dBm between -10K and -9.5K Hz. It is flat at -145dBm across the rest of the spectrum This shows a *lot* more noise. Here come the strange part. I change the frequency to 14.176 MHz and the signal looks just like the signal on 14.179. Flat across the entire spectrum at -145 dBm. By changing the frequency down one kHz to 14.175, I see the signal that looks like 14.178 MHz. A small rise to -130 dBm at the low end again. If I decrement the frequency down an additional kHz to 14.174, I see the signal that looks like 14.177 MHz. A large rise to -113 dBm at the low end again. This pattern repeats itself through out the entire 20 meter band. The rise in the noise floor is a little less in magnitude at the very bottom of 20 meters (14.050), but by the time I get to 14.150 the rise in the noise floor is back to approximately -110 dBm. I checked other bands and it exhibits this behavior on ALL bands. Always a three kHz stepping to repeat the pattern. Anyone have a clue what might cause this behavior? I'm using the Delta 44 with the breakout box eliminator. -Tim --- Tim Ellison Integrated Technical Services Apex, NC USA 919.674.0044 Ext. 25 / 919.674.0045 (FAX) 919.215.6375 - cell Skype: kg4rzy
Re: [Flexradio] Schematic
The schematics are available on the private download page. I will send the info for how to get to it privately. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of W2AGN Sent: Monday, December 05, 2005 7:41 AM To: Flex Radio Subject: [Flexradio] Schematic I note there is not a schematic in the SDR-1000 Manual. Where can one be obtained? John W2AGN ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
[Flexradio] Team Speak
Can someone give me the instructions on how to sign into TeamSpeak? The link on the Flex Radio site is down, and I need to rebuild my computer connection. Thanks K9LZJ Hank Wolfla Lyman H. Wolfla II, Inc. 1308 S. Peace St. Greenfield, IN 46140 [EMAIL PROTECTED] 317-861-0186 Cell: 317-448-3457
[Flexradio] Schematic
Eric I purchased a SDR-1000 used from N1JM and I need access to schematics and what ever info is associated with the radio. Looking forward to my SDR experience. Lee W9OY
Re: [Flexradio] Interesting behavior when connected to a dummy load
The radio will work with the spur reduction on or off. Basically, you can lighten the load on your parallel port and reduce the number of spurs seen by leaving Spur Reduction at it's default ON position. However, if you have an offending spur in the passband, you may want to try to turn it off to move the spur around. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of Jiri Sanda Sent: Monday, December 05, 2005 1:42 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] Interesting behavior when connected to a dummy load OK - so if I understand it well one should run it without the reduction unless there is a problem - a spur audible - and than switching on might help ? 73 ! Jiri OK1RI On Mon, 5 Dec 2005, Ahti Aintila wrote: Jiri, My understanding is that the spur. reduction moves the spurious signal generated by the DDS away from your listening passband. There is a good probability that another spurious signal does not hit the same frequency. 73, Ahti OH2RZ - Original Message - From: Jiri Sanda [EMAIL PROTECTED] Cc: flexRadio@flex-radio.biz Sent: Monday, December 05, 2005 7:04 PM Subject: Re: [Flexradio] Interesting behavior when connected to a dummy load I do not understand ? If the transmitted noise get so much worse when spur. reduction is on why is it there at all ? What positive it does ? 73 ! Jiri OK1RI On Mon, 5 Dec 2005, Eric Wachsmann - FlexRadio wrote: Jeff nailed this one on the head. The jumping around is because when spur reduction is turned on, the radio hardware is only tuned every ~3.051kHz. We do the fine tuning using a software oscillator. Also worthy of note is that we use an 11kHz IF. So what you are seeing is the junk around DC on the left side of the spectrum. Eric Wachsmann FlexRadio Systems ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
[Flexradio] [Fwd: Re: no constant Output]
David Broger wrote: David, I would be suspicious of the output voltage from the line-out from your sound card. I would recommend that you use the calibration routine for determining the line-out voltage, thus with the M-Audio Delta 44 sound card and utilizing the recommended settings for the card you should observe a line-out voltage of.98 volts. The PowerSDR console when picking the Delta 44 sound card will default to expect .98 volts. Wally - M0ZAZ. Hi I have the sdr1k with the 100W pa. I use the Delta SC and sw-version 1.4.5p7. There is the following problem: when I go to tune (should be 10W) I have only 1W. PA-calibration doesen't work all the time (50% abort). If calibration works I'll get the required output-power. But the power is not constant - it goes form 5W to15W. Restart the computer or the sdr1k doesn't solve the problem. After successfull calibration and restart the system it could there is low power. With 1.4.4 there ist the same behavior. What's the Problem? David, HB9RVS ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Hi Wally Thanks for the info. I checked the output volatage. It's 0.96V - a little bit lower than the original value. With 0.96 it's not possible to make the pa-calibration. All gain values are lower than 40dB. The message invalid gain found appears. With 0.98 some time calibration is possible. With both values the tune-power is not constant. I have my sdr1k since about 2-3 months. I can't remember that the calibration at the beginning was a problem. The factory calibration values are all higher than 42 dB. Could it be that a hardware part is demaged (overheated)? 73 David, HB9RVS ---BeginMessage--- David Broger wrote: David, I would be suspicious of the output voltage from the line-out from your sound card. I would recommend that you use the calibration routine for determining the line-out voltage, thus with the M-Audio Delta 44 sound card and utilizing the recommended settings for the card you should observe a line-out voltage of.98 volts. The PowerSDR console when picking the Delta 44 sound card will default to expect .98 volts. Wally - M0ZAZ. Hi I have the sdr1k with the 100W pa. I use the Delta SC and sw-version 1.4.5p7. There is the following problem: when I go to tune (should be 10W) I have only 1W. PA-calibration doesen't work all the time (50% abort). If calibration works I'll get the required output-power. But the power is not constant - it goes form 5W to15W. Restart the computer or the sdr1k doesn't solve the problem. After successfull calibration and restart the system it could there is low power. With 1.4.4 there ist the same behavior. What's the Problem? David, HB9RVS ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Hi Wally Thanks for the info. I checked the output volatage. It's 0.96V - a little bit lower than the original value. With 0.96 it's not possible to make the pa-calibration. All gain values are lower than 40dB. The message invalid gain found appears. With 0.98 some time calibration is possible. With both values the tune-power is not constant. I have my sdr1k since about 2-3 months. I can't remember that the calibration at the beginning was a problem. The factory calibration values are all higher than 42 dB. Could it be that a hardware part is demaged (overheated)? 73 David, HB9RVS ---End Message---
[Flexradio] First OLIVIA digital mode QSO with SDR1K
After getting MixW working correctly, Hoping VAC wouldn't generate a BSD and downloading the latest beta version that supports OLIVIA, I was able to have a successful QSO with YV4GMH, Hector in Venezuela. Olivia is a new data mode which is excellent for poor conditions. It's a wideband data mode using error correction and a modulation method similar to MFSK For more info, you can check out this URL: http://homepage.sunrise.ch/mysunrise/jalocha/mfsk.html It is a very cool digital mode. It sounds like a bunch of sparrows fighting over a bread crust!! Much more pleasant to listen to than PSK. If anyone wants to sked a SDR1K to SDR1K OLIVIA QSO, just drop me an e-mail -Tim --- Tim Ellison mailto:[EMAIL PROTECTED] Integrated Technical Services http://www.itsco.com/ Apex, NC USA 919.674.0044 Ext. 25 / 919.674.0045 (FAX) 919.215.6375 - cell PGP public key available at all public KeyServers
[Flexradio] Master's Thesis Defense
Hey folks, just wanted to let everyone know that my digital comm/SDR project is nearly complete! Thanks for all the help along the way. Master's Thesis Defense A MATLAB AND SOFTWARE DEFINED RADIO APPROACH TO TEACHING DIGITAL COMMUNICATIONS Jonathan A. Beckwith Department of Electrical and Computer Engineering Friday, 9 December 2005, 1:00PM-3:00PM 301 Morse Hall Increasing complexity of communication protocols, especially modulations, requires expensive signal generation and demodulation equipment for meaningful lab experiences in communication engineering courses. Pure software simulation can simulate most real-world modulations and impairments, but it still lacks the .feel. of real hardware and channel impairments. Software radio, which uses hardware for analog and software for baseband processing of the signal, is attracting lots of attention in commercial as well as military circles. Using a software radio platform, one can achieve control of the simulation with real hardware, while maintaining flexibility for many environments. To this end, a series of digital communication lab exercises is presented which is based on the principles in software radio and uses an open Matlab code suite and a commercial RF front end, the FlexRadio Systems SDR-1000 transceiver. The lab exercises include realistic implementations of synchronization sections as well as modulation and demodulation subsystems. The flexibility of the SDR allows for not only labs for current EE 757 and EE 758 classes, but also future ones, which have different modulation requirements. As the system has not yet been implemented, a complete evaluation of its effectiveness has yet to be completed. Only the students using it can provide a complete assessment and evaluation of the SDR Teaching System. This will be done in the semester following its completion. Dr. M. Carter, Thesis Advisor Dr. Thomas Miller Dr. Jianqiu Zhang -- * Jon Beckwith -KB1KBB- B.S.E.E. UNH InterOperability Lab RD Fast Gigabit Ethernet Consortiums 121 Technology Drive, Suite 2 Durham, NH 03824-3525 (603) 862-4534 *
Re: [Flexradio] Interesting behavior when connected to a dummy load
Interestingly, tuning across the band with spur-reduction Off does introduce audible artifacts that are not present when tuning with spur-reduction On. For example, if I'm tuning in 10 Hz steps with spur-reduction OFF, I hear a distintive tick each time the frequency changes, and the receiver's noise floor seems to blip up a bit on the panadapter (a phenomena easily seen if no antenna is attached). A bit annoying, given that, if spur-reduction is ON, no ticks are heard, nor does there seem to be any effect on the noise floor. Probably something isn't being allowed to properly settle when spur-reduction is OFF, compared to when it's ON. - Jeff, WA6AHL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Eric Wachsmann - FlexRadio Sent: Monday, December 05, 2005 11:59 AM To: 'Jiri Sanda'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Interesting behavior when connected to a dummy load The radio will work with the spur reduction on or off. Basically, you can lighten the load on your parallel port and reduce the number of spurs seen by leaving Spur Reduction at it's default ON position. However, if you have an offending spur in the passband, you may want to try to turn it off to move the spur around. Eric Wachsmann FlexRadio Systems http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Re: [Flexradio] Master's Thesis Defense
A friend of mine has an interesting Matlab-based SDR. Check out the last article at: http://home.comcast.net/~w1qg/ - Jeff, WA6AHL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of ecellison Sent: Monday, December 05, 2005 3:53 PM To: 'Jon Beckwith'; FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Master's Thesis Defense Jon A hearty hip hip Congratulations! The 'everything radio!' Eric2 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jon Beckwith Sent: Monday, December 05, 2005 5:26 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Master's Thesis Defense Hey folks, just wanted to let everyone know that my digital comm/SDR project is nearly complete! Thanks for all the help along the way. Master's Thesis Defense A MATLAB AND SOFTWARE DEFINED RADIO APPROACH TO TEACHING DIGITAL COMMUNICATIONS Jonathan A. Beckwith Department of Electrical and Computer Engineering Friday, 9 December 2005, 1:00PM-3:00PM 301 Morse Hall Increasing complexity of communication protocols, especially modulations, requires expensive signal generation and demodulation equipment for meaningful lab experiences in communication engineering courses. Pure software simulation can simulate most real-world modulations and impairments, but it still lacks the .feel. of real hardware and channel impairments. Software radio, which uses hardware for analog and software for baseband processing of the signal, is attracting lots of attention in commercial as well as military circles. Using a software radio platform, one can achieve control of the simulation with real hardware, while maintaining flexibility for many environments. To this end, a series of digital communication lab exercises is presented which is based on the principles in software radio and uses an open Matlab code suite and a commercial RF front end, the FlexRadio Systems SDR-1000 transceiver. The lab exercises include realistic implementations of synchronization sections as well as modulation and demodulation subsystems. The flexibility of the SDR allows for not only labs for current EE 757 and EE 758 classes, but also future ones, which have different modulation requirements. As the system has not yet been implemented, a complete evaluation of its effectiveness has yet to be completed. Only the students using it can provide a complete assessment and evaluation of the SDR Teaching System. This will be done in the semester following its completion. Dr. M. Carter, Thesis Advisor Dr. Thomas Miller Dr. Jianqiu Zhang -- * Jon Beckwith -KB1KBB- B.S.E.E. UNH InterOperability Lab RD Fast Gigabit Ethernet Consortiums 121 Technology Drive, Suite 2 Durham, NH 03824-3525 (603) 862-4534 * ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
[Flexradio] Fw: HELP
I am seeing something strange with my SDR. I notice nowwhen I hit the MOX button in USB or LSB modes I am seeing full output WITHOUT talking. I have done a number of alignments on two diferent computers both using the sameFirebox. what I have now are: 160 62.3 80 49.0 60. 55.6 40 49.0 30 46.4 20 49.1 17 50.9 1549.4 12 45.9 10 44.6 EVEN if I pull the lineoutput out of the back of the SDR I am still getting the same full output when I push the MOX button. Receive works perfectly. I can even see my transmit audio on the sdr's software screen. What is wrong Does this call for a service trip to Texas?? Mike VE3BGE
[Flexradio] SSB vs CW transmit paths
Warning: boring technical details of software internals follow - posted here as others playing in the code may find it of interest. Been poking at PowerSDR and the DttSP code to see how to support transmit with SoftRock style hardware. SSB is pretty straight forward, and I've gotten that working by setting the DttSP TXOsc appropriately when going into xmit mode. Works like a charm. The problem comes when trying to do CW (the perennial SDR problem child mode). It appears that for modes other than CW the audio code in PowerSDR (Callback1 in audio.cs) calls ExchangeSamples (dsp.cs) which in turn maps to audio_callback in DttSP/winmain.c to feed data to DttSP. This copies and moves that data around and eventually results in process_samples in DttSP/sdr.c being called. In here do_tx is called and DSP magic is performed and finally the DttSP transmit osc is applied in do_tx_post. For CW the path is a bit different. Callback1 in audio.cs calls CWtoneExchange that maps to CWtoneExchange in DttSP/keyd.c. All CWtoneExchange does is pull data from the ringbuffer being filled by send_thread_keyd in keyd.c. The data never gets passed through the tx signal processing hain in sdr.c's do_tx, so the transmit oscillator is never applied,. so with a SoftRock style transmitter one ends transmitting at the fundamental frequency. Ooops, that's not what was supposed to happen! Any suggestions on how to go about fixing this? I could add the TX Osc mixer into the send_tone code in keyd.c - although I think the buffers being sent back via this path are also used for sidetone generation. I wonder if two sets of buffers need to be sent back - one to be sent to the transmit hardware and one to be used for sidetone. Or perhaps a better performer would be to change the freq of the CWToneGen osc, or run two of them if two buffers need to be returned to handle sidetone. Also, it would appear IQ correction does not happen in the transmit path for CW - probably want to figure out how to put that in the CW chain as well. Regards, Bill (kd5tfd)
Re: [Flexradio] Interesting behavior when connected to a dummy load
This is actually related to the asynchronous manner in which the hardware is controlled with respect to the audio. When Spur Reduction is off, the hardware is having to tune a lot more often and it can happen in the middle of a sample causing blips or holes in the audio. When the software tuning is used, it only tunes inbetween callbacks, thus ensuring that samples are not dropped/skewed during the change. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Anderson Sent: Monday, December 05, 2005 5:46 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] Interesting behavior when connected to a dummy load Interestingly, tuning across the band with spur-reduction Off does introduce audible artifacts that are not present when tuning with spur-reduction On. For example, if I'm tuning in 10 Hz steps with spur-reduction OFF, I hear a distintive tick each time the frequency changes, and the receiver's noise floor seems to blip up a bit on the panadapter (a phenomena easily seen if no antenna is attached). A bit annoying, given that, if spur-reduction is ON, no ticks are heard, nor does there seem to be any effect on the noise floor. Probably something isn't being allowed to properly settle when spur-reduction is OFF, compared to when it's ON. - Jeff, WA6AHL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Eric Wachsmann - FlexRadio Sent: Monday, December 05, 2005 11:59 AM To: 'Jiri Sanda'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Interesting behavior when connected to a dummy load The radio will work with the spur reduction on or off. Basically, you can lighten the load on your parallel port and reduce the number of spurs seen by leaving Spur Reduction at it's default ON position. However, if you have an offending spur in the passband, you may want to try to turn it off to move the spur around. Eric Wachsmann FlexRadio Systems http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Re: [Flexradio] SSB vs CW transmit paths
I wonder if two sets of buffers need to be sent back - one to be sent to the transmit hardware and one to be used for sidetone. This is approximately what happens under Linux. Generating sidetone within jsdr (as opposed to an outboard keyer) requires 4 audio output ports. (The keyer is also a separate process/jack client.) The generated CW tone is routed both to an audio input of jsdr, and also patched directly to two audio monitor outputs. There is then a constant 1-buffer lag between the sidetone you hear and the CW tone that is transmitted. There's little chance for confusion since you the operator never hear the signal that's actually transmitted. Or perhaps a better performer would be to change the freq of the CWToneGen osc, or run two of them if two buffers need to be returned to handle sidetone. I don't know about Bob's mods to the keyer code to make it run under Windows, but this would be a straightforward procedure algorithmically with the generic keyer code. The computational overhead would probably be tolerable too. All that would be needed would be a pair of CWTone unit generators tuned to different frequencies, but otherwise run exactly in parallel (as well as buffers to put their output in). 73 Frank AB2KT
