Re: [Flexradio] [KB] Two new Knowledge Base articles have been posted
Tim, Thank you for the excellent articles regarding the optimal voice settings. As an avid SSB user and supporter and opponent of the double sideband AM since the mid 50's, I have been wondering why the people want to waste the scarcest nature's resource of HAM-radio, the electromagnetic spectrum, by sending unnecessary broad badwidth and high power at audio frequency bands that don't convey the information efficiently. In addition to those articles, I want to remind you of two other texts that help understanding the importance of proper EQ and signal processing, if you want to transmit the highest intelligibility at the lowest peak limited power: http://kotisivu.dnainternet.net/ahti/sdr-1000/filtclip.pdf http://kotisivu.dnainternet.net/ahti/sdr-1000/speechproc.pdf Since 1970 I am using these principles in all my home-brew rigs and even modified my rice-boxes. Unfortunately I have not yet been able to implement that feature in my several SDR-1000s. 73, Ahti OH2RZ On 07/01/07, Tim Ellison [EMAIL PROTECTED] wrote: To all, Two new Knowledge Base articles related to optimal voice operation have been posted. The first, Q10342 - Why is there a 160 Hz Notch Filter for Phone Use? http://kb.flex-radio.com/article.aspx?id=10342, explains why there is a notch filter for this frequency in the PowerSDR EQ. The second, Q10343 - Rules for EQing Voice for Optimal Phone and AM Operation, http://kb.flex-radio.com/article.aspx?id=103423 goes into great detail of how to set your EQ for voice recording and broadcasting. -Tim KB Administrator ___ 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] More Strange Frequency Drift Problem
Thanks Willi, That's is new to me. I have not disassembled the print stack jet. I expected some NTC an opamp and so on. The heater must be a PTC, these devices possesses a sharp rice of the resistance at a defined temperature, this way making a stable temperature. In the past I have used PTC's for that purpose. The lowest specific temperature available at that time was about 70 degrees C. I wonder what that temp of this device is. PTC's are widely used in the demagnetisation circuits in colour televisions, in series with de demagnetisation coil on the picture tube. As the resistance rises, the current can go down to almost nothing, provided that the PTC is thermally isolated. In the SDR1000 some current will flow due to the heat loss trough the oscillator. I do not think that the PTC is the culprit, the final temperature is only slightly dependent on the voltage, and will not give a fast nor step like change (in the frequency) as the heat transfer is also slowly. Still wondering what happens. 73 peter pa0pvn 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: Willi Reppel [mailto:[EMAIL PROTECTED] Verzonden: zo 7-1-2007 11:48 Aan: [EMAIL PROTECTED]; Brian Kassel; flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. groeten van SM6OMH Willi snip -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/27a3dd46/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] More Strange Frequency Drift Problem
Hi Willi: Thanks for that very nice detailed description. I am not quite sure if the thermistor is the problem, but your description should help me to track down the culprit that causes the short term drifting between TX and RX Thanks Again Brian K7RE Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10 TRXboard power to 200MHz oscilator pin14 [AVDD] J7pin10 (interconnect) interconnect J7 is a 12 pin connector I hope it helps you 73 peter pa0pvn 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: [EMAIL PROTECTED] namens Brian Kassel Verzonden: za 6-1-2007 22:16 Aan: flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Folks: Can someone tell me where the regulated voltage for the 200 MHz. oscillator comes from? It isn't clear to me in the schematic. I am investigating a 22 HZ oscillator frequency change from TX to RX that occurs in the first 10 seconds, then stabilizes to less than 1 Hz change. . Temperature doesn't seem to be the culprit, and as far as I can see, there is no switching or changing of loading on the oscillator between TX and RX. Still fighting the uphill battle to determine my frequency shift problem. Brian K7RE ___ 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/ -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070106/87177bc4/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] More Strange Frequency Drift Problem
At 02:48 AM 1/7/2007, Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. Hmm, running the thermal control heater off an unregulated bus seems like a dicey design. Better have a real stiff power supply and very short leads or good sense lines going back to the PS regulator. Certainly not going to be good for running off a battery. K7RE, you're running off a regulated power supply as I recall, but how long and resistive are the wires from supply to radio? Can you measure the voltage, at the thermistor, as you switch between Tx and Rx. Even running at lower RF power, there may be enough of a shift in voltage to account for your problem. Maybe Flex might want to figure out an ECO that runs the thermistor off a regulated supply (5V has a fair amount of current because it has to run the DDS which is right next to the oscillator, but I don't know how close to the max current the 5V reg is running at). groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10 TRXboard power to 200MHz oscilator pin14 [AVDD] J7pin10 (interconnect) interconnect J7 is a 12 pin connector I hope it helps you 73 peter pa0pvn 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: [EMAIL PROTECTED] namens Brian Kassel Verzonden: za 6-1-2007 22:16 Aan: flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Folks: Can someone tell me where the regulated voltage for the 200 MHz. oscillator comes from? It isn't clear to me in the schematic. I am investigating a 22 HZ oscillator frequency change from TX to RX that occurs in the first 10 seconds, then stabilizes to less than 1 Hz change. . Temperature doesn't seem to be the culprit, and as far as I can see, there is no switching or changing of loading on the oscillator between TX and RX. Still fighting the uphill battle to determine my frequency shift problem. Brian K7RE ___ 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/ -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070106/87177bc4/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/ 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://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] Idea for new feature: instant replay
At 06:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Excellent idea. Especially the idea with the narrower/different filtering. I gotta warn you, though,if this becomes popular, I can see the outcry on the contesting reflectors.There are folks who beleive that when the contest period ends, it's pencils down. Others say, whatever it takes. Others say, if you didn't copy it that way initially, tough beans, no looking back. I love the excitement of rules interpretation that novel new functionality can give you. 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/
Re: [Flexradio] More Strange Frequency Drift Problem
Hello Peter: I have never heard or worked with this device, so your explanation really helped me understand the circuit. Yes, I see now that it is quite unlikely that the PTC is the culprit. Since apparently there is no switching, change in loading, or other circuit change from TX to RX, I can only conclude that it is a voltage regulator problem. I can't seem to find any other explanation for the 10 second approximately 22 HZ drift at the test frequency of 14.070 I will disassemble the board stack in order to access the oscillator, run some temporary probes to the oscillator, then reassemble the stack for testing. Hopefully my measurements will lead to a solution. Brian K7RE [EMAIL PROTECTED] wrote: Thanks Willi, That’s is new to me. I have not disassembled the print stack jet. I expected some NTC an opamp and so on. The heater must be a PTC, these devices possesses a sharp rice of the resistance at a defined temperature, this way making a stable temperature. In the past I have used PTC’s for that purpose. The lowest specific temperature available at that time was about 70 degrees C. I wonder what that temp of this device is. PTC’s are widely used in the demagnetisation circuits in colour televisions, in series with de demagnetisation coil on the picture tube. As the resistance rises, the current can go down to almost nothing, provided that the PTC is thermally isolated. In the SDR1000 some current will flow due to the heat loss trough the oscillator. I do not think that the PTC is the culprit, the final temperature is only slightly dependent on the voltage, and will not give a fast nor step like change (in the frequency) as the heat transfer is also slowly. Still wondering what happens. 73 peter pa0pvn 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: Willi Reppel [mailto:[EMAIL PROTECTED] Verzonden: zo 7-1-2007 11:48 Aan: [EMAIL PROTECTED]; Brian Kassel; flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. groeten van SM6OMH Willi snip ___ 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] Has Anyone Else Senn the Strange Frequency Drift Problem?
Hi Jim: As always, thanks very much for taking the time to reply and your help in getting this problem fixed. Yes, feeding the PTC directly off of the main power supply must lead to some heat variance due to the inevitable voltage sag caused when going from TX to RX. However, I just have to ask a question here. How come no one else is seeing this 22 Hz., 10 second drift when switching from TX back to RX? It is very apparent on the waterfall in the digital modes, and anyone running any digital mode would immediately see this frequency change. I amusing a typical power supply, and see this change, let's remember, even at the 5W TX level. I have not received any message from anyone on this reflector that they have seen this phenomena at all. Let me ask again, has ANYONE at all seen anything like this at all? Seems to me that such a design flaw would manifest itself quite often in general usage. Unless I can correct this problem, the radio is quite useless to me in the digital modes, my main operating activity. With this drifting problem, I have not been able to use my radio since I received it, several weeks ago now, I hate to send the radio back for repair, as the fix has to be something quite straightforward I would think. Brian K7RE Jim Lux wrote: At 02:48 AM 1/7/2007, Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. Hmm, running the thermal control heater off an unregulated bus seems like a dicey design. Better have a real stiff power supply and very short leads or good sense lines going back to the PS regulator. Certainly not going to be good for running off a battery. K7RE, you're running off a regulated power supply as I recall, but how long and resistive are the wires from supply to radio? Can you measure the voltage, at the thermistor, as you switch between Tx and Rx. Even running at lower RF power, there may be enough of a shift in voltage to account for your problem. Maybe Flex might want to figure out an ECO that runs the thermistor off a regulated supply (5V has a fair amount of current because it has to run the DDS which is right next to the oscillator, but I don't know how close to the max current the 5V reg is running at). groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10 TRXboard power to 200MHz oscilator pin14 [AVDD] J7pin10 (interconnect) interconnect J7 is a 12 pin connector I hope it helps you 73 peter pa0pvn 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: [EMAIL PROTECTED] namens Brian Kassel Verzonden: za 6-1-2007 22:16 Aan: flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Folks: Can someone tell me where the regulated voltage for the 200 MHz. oscillator comes from? It isn't clear to me in the schematic. I am investigating a 22 HZ oscillator frequency change from TX to RX that occurs in the first 10 seconds, then stabilizes to less than 1 Hz change. . Temperature doesn't seem to be the culprit, and as far as I can see, there is no switching or changing of loading on the oscillator between TX and RX. Still fighting the uphill battle to determine my frequency shift problem. Brian K7RE ___ 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/ -- next part -- An HTML attachment was
Re: [Flexradio] Has Anyone Else Senn the Strange Frequency DriftProblem?
Brian, This modification is fairly recent, so it may be that there aren't many units out there which incorporate it, and of those units, perhaps few of their users, if any, are using digital modes AND monitoring this reflector. Regarding troubleshooting...if you suspect the heater/thermistor might be causing the problem, then you could try disconnecting it (for example, unsolder the wire to the 13.5 volts - refer to Willi's email). If the drift remains, then you know that the thermistor isn't the problem. Good luck on your hunt! - Jeff, K6JCA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brian Kassel Sent: Sunday, January 07, 2007 7:20 AM To: Jim Lux Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz Subject: [Flexradio] Has Anyone Else Senn the Strange Frequency DriftProblem? Hi Jim: As always, thanks very much for taking the time to reply and your help in getting this problem fixed. Yes, feeding the PTC directly off of the main power supply must lead to some heat variance due to the inevitable voltage sag caused when going from TX to RX. However, I just have to ask a question here. How come no one else is seeing this 22 Hz., 10 second drift when switching from TX back to RX? It is very apparent on the waterfall in the digital modes, and anyone running any digital mode would immediately see this frequency change. I amusing a typical power supply, and see this change, let's remember, even at the 5W TX level. I have not received any message from anyone on this reflector that they have seen this phenomena at all. Let me ask again, has ANYONE at all seen anything like this at all? Seems to me that such a design flaw would manifest itself quite often in general usage. Unless I can correct this problem, the radio is quite useless to me in the digital modes, my main operating activity. With this drifting problem, I have not been able to use my radio since I received it, several weeks ago now, I hate to send the radio back for repair, as the fix has to be something quite straightforward I would think. Brian K7RE Jim Lux wrote: At 02:48 AM 1/7/2007, Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. Hmm, running the thermal control heater off an unregulated bus seems like a dicey design. Better have a real stiff power supply and very short leads or good sense lines going back to the PS regulator. Certainly not going to be good for running off a battery. K7RE, you're running off a regulated power supply as I recall, but how long and resistive are the wires from supply to radio? Can you measure the voltage, at the thermistor, as you switch between Tx and Rx. Even running at lower RF power, there may be enough of a shift in voltage to account for your problem. Maybe Flex might want to figure out an ECO that runs the thermistor off a regulated supply (5V has a fair amount of current because it has to run the DDS which is right next to the oscillator, but I don't know how close to the max current the 5V reg is running at). groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10 TRXboard power to 200MHz oscilator pin14 [AVDD] J7pin10 (interconnect) interconnect J7 is a 12 pin connector I hope it helps you 73 peter pa0pvn 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: [EMAIL PROTECTED] namens Brian Kassel Verzonden: za 6-1-2007 22:16 Aan: flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Folks: Can someone tell me where the regulated voltage for the 200 MHz. oscillator comes from? It isn't clear to me in the schematic. I am investigating a 22 HZ oscillator
[Flexradio] VAC 4.04 has been released
VAC version 4.04 was released 31-Dec-2006. The changes are listed below Version 4.04 (31.12.06) * Fixed a bug in topology description (fake recording controls were not accessible). * Fixed some synchronization bugs (the system hangs while several cables are heavily used). * Added a pitch (frequency) shifting support. * Added a limited Vista support. Updates may be available from the source you purchased it from -Tim, W4TME ___ 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] Idea for new feature: instant replay
Jim Lux wrote: At 06:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Excellent idea. Especially the idea with the narrower/different filtering. I gotta warn you, though,if this becomes popular, I can see the outcry on the contesting reflectors.There are folks who beleive that when the contest period ends, it's pencils down. Others say, whatever it takes. Others say, if you didn't copy it that way initially, tough beans, no looking back. I love the excitement of rules interpretation that novel new functionality can give you. Jim, W6RMK He he. But, in a more serious vein, without really huge amounts of storage, at least with the way we do things now, this won't amount to more than maybe a half hour or so. The straightforward way would be to have the current record function simply. . .record to memory in some sort of rotating buffer instead of a file as such. But, jack that up to more than a couple of minutes and it gets very large, even by today's stanards. I must admit, I've lusted after this feature more than once. What would be nicer still would be the ability in the record menu to have a store last 15 seconds feature. THAT would do exactly what you're talking about and it would be sufficiently selective. But, no popups on such a feature, just an info bar giving the file name. Larry WO0Z ___ 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] Idea for new feature: instant replay
The best thing about TiVo is that it ALWAYS does this recording in the background. In order to make this truly effective, it must always be running in the background, with a button on the user interface that allows that last xx seconds/minutes to be saved, or played back. If you must first hit a UI button to enable this function, the advantage is usually lost (by the time you hit the button it's too late). Having a function to semi-permanently enable/disable (not in real-time) would be OK for those who don't need it. Opening a file that stores the last xx (30?) seconds as a circular buffer should not be too difficult, but it does add more overhead. Ideas regarding storage length and whether the demoded audio or IF signal should be recorded are other questions... Anyway, this is a great idea! I love my TiVos. Terry - Original Message - From: Larry Loen [EMAIL PROTECTED] To: Jim Lux [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Sunday, January 07, 2007 11:29 AM Subject: Re: [Flexradio] Idea for new feature: instant replay Jim Lux wrote: At 06:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Excellent idea. Especially the idea with the narrower/different filtering. I gotta warn you, though,if this becomes popular, I can see the outcry on the contesting reflectors.There are folks who beleive that when the contest period ends, it's pencils down. Others say, whatever it takes. Others say, if you didn't copy it that way initially, tough beans, no looking back. I love the excitement of rules interpretation that novel new functionality can give you. Jim, W6RMK He he. But, in a more serious vein, without really huge amounts of storage, at least with the way we do things now, this won't amount to more than maybe a half hour or so. The straightforward way would be to have the current record function simply. . .record to memory in some sort of rotating buffer instead of a file as such. But, jack that up to more than a couple of minutes and it gets very large, even by today's stanards. I must admit, I've lusted after this feature more than once. What would be nicer still would be the ability in the record menu to have a store last 15 seconds feature. THAT would do exactly what you're talking about and it would be sufficiently selective. But, no popups on such a feature, just an info bar giving the file name. Larry WO0Z ___ 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] Back-to-Basics Setup Question
Since my last CW QSO was approx 30 years ago, I decided it was time to dust off the key try to get some proficiency built up. I am not clear on how to connect a straight key or external keyer via a COM port. Maybe it is just my fuzzy brain, but the manual does not seem to be real clear about this. Nor is the information found in the Knowledge Base. 1.) The manual says: Common -- Pin 4 (DTR), Dot -- Pin 6 (DSR), Dash -- Pin 8 (CTS). Do I connect the keyer output to Pin 6, Pin 8, or both? 2.) On the SetupKeyer tab, what settings should I use in the Connections box? Or do I need to worry about it since I am using an external keyer? 3.) What other settings are needed that I am missing? Thanks for the help. 73, Ray, K9DUR -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/3b708927/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] Idea for new feature: instant replay
This is what the timemachine application does under the jack audio subsystem under Linux. 73 Frank AB2KT Terry Fox wrote: The best thing about TiVo is that it ALWAYS does this recording in the background. In order to make this truly effective, it must always be running in the background, with a button on the user interface that allows that last xx seconds/minutes to be saved, or played back. If you must first hit a UI button to enable this function, the advantage is usually lost (by the time you hit the button it's too late). Having a function to semi-permanently enable/disable (not in real-time) would be OK for those who don't need it. Opening a file that stores the last xx (30?) seconds as a circular buffer should not be too difficult, but it does add more overhead. Ideas regarding storage length and whether the demoded audio or IF signal should be recorded are other questions... Anyway, this is a great idea! I love my TiVos. Terry - Original Message - From: Larry Loen [EMAIL PROTECTED] To: Jim Lux [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Sunday, January 07, 2007 11:29 AM Subject: Re: [Flexradio] Idea for new feature: instant replay Jim Lux wrote: At 06:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Excellent idea. Especially the idea with the narrower/different filtering. I gotta warn you, though,if this becomes popular, I can see the outcry on the contesting reflectors.There are folks who beleive that when the contest period ends, it's pencils down. Others say, whatever it takes. Others say, if you didn't copy it that way initially, tough beans, no looking back. I love the excitement of rules interpretation that novel new functionality can give you. Jim, W6RMK He he. But, in a more serious vein, without really huge amounts of storage, at least with the way we do things now, this won't amount to more than maybe a half hour or so. The straightforward way would be to have the current record function simply. . .record to memory in some sort of rotating buffer instead of a file as such. But, jack that up to more than a couple of minutes and it gets very large, even by today's stanards. I must admit, I've lusted after this feature more than once. What would be nicer still would be the ability in the record menu to have a store last 15 seconds feature. THAT would do exactly what you're talking about and it would be sufficiently selective. But, no popups on such a feature, just an info bar giving the file name. Larry WO0Z ___ 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] Has Anyone Else Senn the Strange Frequency Drift Problem?
At 07:20 AM 1/7/2007, Brian Kassel wrote: Hi Jim: As always, thanks very much for taking the time to reply and your help in getting this problem fixed. Yes, feeding the PTC directly off of the main power supply must lead to some heat variance due to the inevitable voltage sag caused when going from TX to RX. However, I just have to ask a question here. How come no one else is seeing this 22 Hz., 10 second drift when switching from TX back to RX? It is very apparent on the waterfall in the digital modes, and anyone running any digital mode would immediately see this frequency change. I amusing a typical power supply, and see this change, let's remember, even at the 5W TX level. Maybe your power supply changes a bit more? Maybe the thermal connection between thermistor and the crystal is different? There might be more people than you think that actually experience the same phenomenon (some worse than others, just due to manufacturing variability and different power supplies), just that they operate CW or SSB, where a 10-15 Hz shift probably wouldn't be noticed, most of the time. Just as a general question, what's the temperature coefficient of the 200 MHz oscillator? It could be as much as 1 ppm/degree C, although I think it's less. I rummaged around a bit and couldn't find my copy of the datasheet for the oscillator, and I don't have my test data handy, either. 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/
Re: [Flexradio] Back-to-Basics Setup Question
Hi Ray, I am attaching a new K1EL WinKeyUSB keyer to my system today. Paddles work great when the SEMI-BREAKIN and IAMBIC boxes are checked in the Console. My dit paddle goes to pin 6, dash paddle goes to pin 8 and ground is pin 4 of COM1. [a note: Bill KD5TFD commented that he was using a USB -- COM1 port adapter. Mike is made by Targus for about $24. It works great. So you *CAN* use a usb to serial adapter if you want to] Now I just setting up the external keyer and I immediately found out that the COM port on my PC is NOT COMPATIBLE with the regular TTL circuitry in my WinKeyUSB keyer. So I switched to a WinKeyUSB keyer with RELAYS to do the keying (Steve K1EL calls it the HV option). So far that is working GREAT with the keyer output straddling my DIT pin 6 and GND pin 4 of my COM port. The trick seems to be setting up the PowerSDR Console with these SETTINGS -- DSP -- KEYER -- SEMI-BREAKIN checked, Connections Primary=COM1, Secondary=none, Iambic+monitor+HighRes all UNCHECKED, delay=300ms. This seems to work real well. I would think that a straight key or any switch closure would work the same as above. o.k.? BK de ken n9vv Ray Andrews wrote: Since my last CW QSO was approx 30 years ago, I decided it was time to dust off the key try to get some proficiency built up. I am not clear on how to connect a straight key or external keyer via a COM port. Maybe it is just my fuzzy brain, but the manual does not seem to be real clear about this. Nor is the information found in the Knowledge Base. 1.) The manual says: Common -- Pin 4 (DTR), Dot -- Pin 6 (DSR), Dash -- Pin 8 (CTS). Do I connect the keyer output to Pin 6, Pin 8, or both? 2.) On the SetupKeyer tab, what settings should I use in the Connections box? Or do I need to worry about it since I am using an external keyer? 3.) What other settings are needed that I am missing? Thanks for the help. 73, Ray, K9DUR -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/3b708927/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/ -- Flex-Radio Customer Support (1-512-250-8595) --- The answer to your question can be found in the wonderful new Knowledge Base Please use it frequently http://kb.flex-radio.com/ ___ 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] Idea for new feature: instant replay
- Original Message - At 08:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Regards, Chuck k0mv I suggested this TIVO-like replay feature while chatting just before the 11/1 Town Meeting. I'd like to see it work just like the TIVO replay feature: a pre-determined amount of recorded history in a moving window (circular buffer) with the ability to rewind, fast-forward, slow-motion or just go back 15 seconds at a time. Additionally, when going in slow-motion the audio could be scaled to normal pitch. This would really help when trying to pull out that weak one that insists on sending CW at 30+ WPM. I think the IF should be recorded so that filters can be adjusted during playback. Total size of the recording window should be adjustable. At 192 KHz sampling, the storage requirements are not that large. Just use a file for the buffer. My TIVO box maintains a 30 minute buffer for two separate channels. Doing the same here requires a lot less storage. How would I use it? Primarily for getting the callsign of a weak station in a pileup (usually on 160M or 80M), but I can also see using it for weak-signal VHF/UHF work. I can't imagine using it much in a contest. There usually isn't time for that kind of instant playback, unless you're much better at multi-tasking than I am. 73, Clay W7CE ___ 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] Has Anyone Else Senn the Strange FrequencyDriftProblem?
Jeff and Brian, To run without the preheater/thermistor you can just disconnect it on the terminal strip behind the front plate. On my newly bought second SDR1000 the thermistor is connected to the leftmost post of the black terminal strip.Unsoldering the read connecting wire from the thermistor may make Flex-Radio´s guarantee null and void. vy 73 es gl de SM6OMH Willi - Original Message - From: Jeff Anderson [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; Jim Lux [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Sunday, January 07, 2007 5:15 PM Subject: Re: [Flexradio] Has Anyone Else Senn the Strange FrequencyDriftProblem? Brian, This modification is fairly recent, so it may be that there aren't many units out there which incorporate it, and of those units, perhaps few of their users, if any, are using digital modes AND monitoring this reflector. Regarding troubleshooting...if you suspect the heater/thermistor might be causing the problem, then you could try disconnecting it (for example, unsolder the wire to the 13.5 volts - refer to Willi's email). If the drift remains, then you know that the thermistor isn't the problem. Good luck on your hunt! - Jeff, K6JCA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brian Kassel Sent: Sunday, January 07, 2007 7:20 AM To: Jim Lux Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz Subject: [Flexradio] Has Anyone Else Senn the Strange Frequency DriftProblem? Hi Jim: As always, thanks very much for taking the time to reply and your help in getting this problem fixed. Yes, feeding the PTC directly off of the main power supply must lead to some heat variance due to the inevitable voltage sag caused when going from TX to RX. However, I just have to ask a question here. How come no one else is seeing this 22 Hz., 10 second drift when switching from TX back to RX? It is very apparent on the waterfall in the digital modes, and anyone running any digital mode would immediately see this frequency change. I amusing a typical power supply, and see this change, let's remember, even at the 5W TX level. I have not received any message from anyone on this reflector that they have seen this phenomena at all. Let me ask again, has ANYONE at all seen anything like this at all? Seems to me that such a design flaw would manifest itself quite often in general usage. Unless I can correct this problem, the radio is quite useless to me in the digital modes, my main operating activity. With this drifting problem, I have not been able to use my radio since I received it, several weeks ago now, I hate to send the radio back for repair, as the fix has to be something quite straightforward I would think. Brian K7RE Jim Lux wrote: At 02:48 AM 1/7/2007, Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. Hmm, running the thermal control heater off an unregulated bus seems like a dicey design. Better have a real stiff power supply and very short leads or good sense lines going back to the PS regulator. Certainly not going to be good for running off a battery. K7RE, you're running off a regulated power supply as I recall, but how long and resistive are the wires from supply to radio? Can you measure the voltage, at the thermistor, as you switch between Tx and Rx. Even running at lower RF power, there may be enough of a shift in voltage to account for your problem. Maybe Flex might want to figure out an ECO that runs the thermistor off a regulated supply (5V has a fair amount of current because it has to run the DDS which is right next to the oscillator, but I don't know how close to the max current the 5V reg is running at). groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10
Re: [Flexradio] Idea for new feature: instant replay
At 11:26 AM 1/7/2007, W7CE wrote: - Original Message - At 08:41 AM 1/7/2007, K0MV wrote: Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Regards, Chuck k0mv I suggested this TIVO-like replay feature while chatting just before the 11/1 Town Meeting. I'd like to see it work just like the TIVO replay feature: a pre-determined amount of recorded history in a moving window (circular buffer) with the ability to rewind, fast-forward, slow-motion or just go back 15 seconds at a time. Additionally, when going in slow-motion the audio could be scaled to normal pitch. This would really help when trying to pull out that weak one that insists on sending CW at 30+ WPM. I think the IF should be recorded so that filters can be adjusted during playback. Total size of the recording window should be adjustable. At 192 KHz sampling, the storage requirements are not that large. Just use a file for the buffer. My TIVO box maintains a 30 minute buffer for two separate channels. Doing the same here requires a lot less storage. How would I use it? Primarily for getting the callsign of a weak station in a pileup (usually on 160M or 80M), but I can also see using it for weak-signal VHF/UHF work. I can't imagine using it much in a contest. There usually isn't time for that kind of instant playback, unless you're much better at multi-tasking than I am. You use it for, ahem, post contest log checking. Hey, at least the signal was received over the air, which is a lot more sporting than reading the callbook. But I see all these things as just sort of gradations of various strategies.. There are a number of CW decoders out there, and for the typical contest exchange, they'd probably work pretty well. Over lunch, we've talked about how it would be possible to build a piece of software that would do multiple parallel sequential decoding to dig out the weak signals (find the strong ones, subtract them, etc.), and while you're at it, totally automate the exchange (QSL, UR 59, PLS RPT ALL). Just think, you could sleep while your cluster computer racks up the big points in the contest for you. Instead of losing sleep during the contest, and spending all those hours refining your contesting skills, you'd be losing sleep in the months before, trying to get all that signal processing software working. This would, of course, be just another instance of a Cognitive Radio... Conceptually, it's not much different than playing chess vs writing software to be successful at chess. Neither is easy, they're just different, and would interest different types of people. What's cool about the new crop of SDR peripherals (SDR1000 being but one) is that they actually make stuff like this easier, because they DO provide a closer to the air audio stream, as opposed to something that has had a lot of analog processing. 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/
Re: [Flexradio] Idea for new feature: instant replay
This function seems to be covered by the built-in 'Wave recorder function of PowerSDR -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/0513ef38/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] Transmit to Receive Glitch
I have been experiencing a glitch recently. I'm hoping some of you have cured it and will help. Using version 1.6.3 or 1.8.0 when transitioning from transmit to receive the receiver is gone. I have to put Power SDR in standby and turn it back on. The receiver comes right back. I am using the Delta 44 card. The SDR-1000 connects to the 3 GHz windows machine via USB adaptor. I am running AM at 25 watts. I key with a relay from my audio mixing console. Nothing else on that relay. Good RF practices no RF in the shack. Thanks in advance. Mike Monnier W8BAC ___ 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] Back-to-Basics Setup Question
Ken, Thanks for the suggestions. I found that my external keyer (MFJ-401D) is not compatible with the COM port, either. So I connected my paddles straight key direct to the COM port. I had been using the key jack on the back of the SDR-1000, and that would still be my preference. The CW setup article in the Knowledge Base as well as the SDR-1000 manual indicate that there is less latency if you use the COM port. I tried the COM port instead of the key jack because of a problem I had trying to use the key jack. However, the problem is still there. Using the CWX automatic keyer, the radio sends perfect code. However, if I try to send CW using either the paddles or the straight key, there is a very significant delay between key closure transmit output. For example, if I set the code speed on the internal keyer to 15 wpm send a string of 5 dits, the transmitter will not turn on until the 3rd dit, cutting off the 1st 2 dits. I confirmed this by watching my in-line power meter by listening on another receiver. This occurs using either the rear panel jack or the COM port. What am I missing? 73, Ray, K9DUR -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/cf92237a/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] Transmit euqalizer + Gate causes lock-up in SVN821
Hi All, Using SVN 821 and I have noticed that when trying to use both the transmit equalizer and the noise gate, PowerSDR will not transmit any audio at all in SSB. Lowering the Gate value does not change anything. The panadapter freezes, cpu processing shoots up to for me an unprecedented 85-90% (usually around 20% when transmitting audio) and no audio is transmitted. PowerSDR itself does not lock up. No other DSP or other processing of any kind is used. If I disable either the Gate or the Transmit Equalizer, there is no problem, i.e. I can use either separately but not both together. Is anyone else experiencing this? Or is there something I'm possibly overlooking? Thanks, 73 de Joe - AB1DO Configuration: Dell Dimension 4700 /w 3GHz P4 HT + 1GB DDR2 SDRAM + Intel 915G Express + XPHomeSP2 SDR-1000 + RFE + 100W PA Delta-44 + Break-out kit -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/76347ffa/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] Test - Please Delete
Just testing.. I have not received a note from the forum since 1/1/2007.. Just testing.. 73, Dudley ___ 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] Has Anyone Else Senn the Strange Frequency DriftProblem?
Hi All 800 Q's later. No sign of any drift between TX and receive. That is if the other station is on frequency. Using MMTTY with N1MM as the logger. The SDR-1K was putting about 1200 watts up the coax. Started with SVN 819 but switched back to 801. Had rates over 120/hour (10 Q rates) with 80/hour for long periods of time. The only time I saw any drift on the MMTTY waterfall was when the other station was off frequency. Also did notice about a 10 Hz shift in xmit and recv frequency when using the RIT. But attributed that to the station calling me being off frequency. An awful lot of that this weekend. Even under these condx MMTTY would lock onto his frequency by the time he had sent MY Call de His Call. Used 300 Hz filter for receive and had the best copy ever, here at NO2T. The bands were very crowded. Looking at the pan display was scary. Was able to find a clear spot almost immediately. Problem was that my signal was too clean!! Stations would crowd me after a few minutes. Need to generate some splatter to give my signal some room. Enjoyed the RTTY Roundup with the SDR-1K. Thanks all for a wonderful Black Box 73 de Jerry NO2T 08:20 AM 1/7/2007 -0700, you wrote: . However, I just have to ask a question here. How come no one else is seeing this 22 Hz., 10 second drift when switching from TX back to RX? It is very apparent on the waterfall in the digital modes, and anyone running any digital mode would immediately see this frequency change. I amusing a typical power supply, and see this change, let's remember, even at the 5W TX level. I have not received any message from anyone on this reflector that they have seen this phenomena at all. Let me ask again, has ANYONE at all seen anything like this at all? Seems to me that such a design flaw would manifest itself quite often in general usage. Unless I can correct this problem, the radio is quite useless to me in the digital modes, my main operating activity. With this drifting problem, I have not been able to use my radio since I received it, several weeks ago now, I hate to send the radio back for repair, as the fix has to be something quite straightforward I would think. Brian K7RE Jim Lux wrote: At 02:48 AM 1/7/2007, Willi Reppel wrote: Peter, You wrote: I am not sure where the power for the heater on the 200MHz oscillator come from I bought a new 1 W SDR1000 last month before the announcement about the 100 W-only version came. I disassembled the unit to have a look at the termistor. It is a small disk of approx 8 mm diameter and 2 mm thickness which is soldered or glued with a conductive compound on to the case of oscillator QG1. A wire is soldered to the top of the disk which is connected directly to the terminal strip and + 13.8 V dc. The grounded case of the crystal oscillator serves as return pass and minus. It seems to be a combined heater / termistor with approx 50 ohm att room temp. and 150 ohm at operation temp. Hope this sheds some light upon how the preheater / termistor is fed. Hmm, running the thermal control heater off an unregulated bus seems like a dicey design. Better have a real stiff power supply and very short leads or good sense lines going back to the PS regulator. Certainly not going to be good for running off a battery. K7RE, you're running off a regulated power supply as I recall, but how long and resistive are the wires from supply to radio? Can you measure the voltage, at the thermistor, as you switch between Tx and Rx. Even running at lower RF power, there may be enough of a shift in voltage to account for your problem. Maybe Flex might want to figure out an ECO that runs the thermistor off a regulated supply (5V has a fair amount of current because it has to run the DDS which is right next to the oscillator, but I don't know how close to the max current the 5V reg is running at). groeten van SM6OMH Willi - Original Message - From: [EMAIL PROTECTED] To: Brian Kassel [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Saturday, January 06, 2007 11:09 PM Subject: Re: [Flexradio] More Strange Frequency Drift Problem I am not sure where the power for the heater on the 200MHz oscilator come from power to the 200MHz oscilator: PIOboard [AVDD] IC9(TPS76833) pin5+6 to interconnect pin 10 TRXboard power to 200MHz oscilator pin14 [AVDD] J7pin10 (interconnect) interconnect J7 is a 12 pin connector I hope it helps you 73 peter pa0pvn 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: [EMAIL PROTECTED] namens Brian Kassel Verzonden: za 6-1-2007 22:16 Aan: flexradio@flex-radio.biz Onderwerp: Re: [Flexradio] More Strange Frequency Drift Problem Folks:
Re: [Flexradio] Transmit to Receive Glitch
On 1/7/07, Mike Monnier [EMAIL PROTECTED] wrote: I have been experiencing a glitch recently. I'm hoping some of you have cured it and will help. Using version 1.6.3 or 1.8.0 when transitioning from transmit to receive the receiver is gone. I have to put Power SDR in standby and turn it back on. The receiver comes right back. I am using the Delta 44 card. The SDR-1000 connects to the 3 GHz windows machine via USB adaptor. I am running AM at 25 watts. I key with a relay from my audio mixing console. Nothing else on that relay. Good RF practices no RF in the shack. Thanks in advance. I have this same problem from time to time and there seems to be no real pattern that leads up to it. My setup is very much the same, except I'm using a parallel port. AM seems to be the mode where I've seen this 99% of the time. Has happened in all versions since I got the Flex back in May '06. ___ 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] K1EL WinKeyUSB-HV great with SDR-1000
Hi, this is just a note to say that I finished building my new WinKeyUSB-HV in about 2 hrs last night. It was easy and fun to put together. The HV version has two eight pin ICs that are micro-RELAYS instead of the standard OptoIsolators. I needed the relay keying in order to interface to my PC COM1 port. I connected the WinKeyUSB-HV to my USB port for power, fired up WinKey2 Manager and everything worked like a charm. --- Here is how I connected the keyer to my SDR-1000 setup: Paddles work great when the SEMI-BREAKIN and IAMBIC boxes are checked in the Console. My dit paddle goes to pin 6, dah paddle goes to pin 8 and ground is pin 4. OP prefers coffee, Orange or Dr. Pepper. [a note: Bill KD5TFD commented that he was using a USB -- COM1 port adapter. Mine is made by Targus for about $24. It works great. So you *CAN* use a USB to serial adapter if you want to] My Keyer setup is: The trick seems to be setting up the PowerSDR Console with these SETTINGS -- DSP -- KEYER -- SEMI-BREAKIN checked, Connections Primary=COM1, Secondary=NONE, Iambic+monitor+HighRes all UNCHECKED, delay=600ms. This seems to work real well. I would think that a straight key or any switch closure would work the same as above. --- Here are the internal keyer settings (configured by paddle or WinKey2USB-HV: PaddleDog = ON Ratio = 53 Weight = 50 Comp = 0 LeadIn = 0 1stExt = 5 Sample = 45 Tail = 5 Farns = 0 Keyer Mode = Iambic B Paddle Hang = 1.0 Word Sidetone = off Output Config Port1, ST OFF --- I hope more guys give the external keyer a try. It gives very fine grained control of so many useful parameters, and of course the K1EL keyers interface to the most popular logging programs and digi interfaces. The T/R time in the SDR-1000 has has vast improvements over the past 6 months. It is very smooth and enjoyable to operate CW now. 72/73 de ken n9vv ___ 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] Writelog and SDR-1000
Two of us are experiencing an identical interface anomaly with the above mentioned products. Hopefully someone on one of these reflectors can offer some constructive advice as to the resolution. We are using WL 10.61E and PowerSDR v1.6.3 and v1.9.0 The systems are set for VHF and UHF bands 50-10368MHz Comport offset is zero PowerSDR is set to the actual frequency using the XVTR screen If you select the band/frequency from PowerSDR, WL follows just fine If you set the frequency from WL PowerSDR follows fine up to the 903 band Above 903, if you select a band from WL the frequency on WL momentarily shows the new band, but after about a second reverts back to 903. Has anyone seen this, or can offer a suggestion? In addition, it is impossible to select 10368 or 24192 from Writelog. Writelog responds with 1036 or 2419 bands instead. This is not good. Any ideas? Thanks Phil K3TUF ___ 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] Desensing of signal by AGC due to carrier?
Joe, I think the ANF only operates in the audio path after the AGC, so it doesn't actually eliminate the carrier from within the passband of the filter, although it does remove it from the audio output of the radio. However, a tunable, adjustable-width notch filter would solve this. About a year ago, another Flexer came up with a great concept, and unfortunately I do not remember who it was, although I remember his idea and terminology. His idea was to have the ability to slide a notch filter from either the left or right side of the panadapter display, and place it on top of an offending carrier. In fact, he used the analogy of having a 'quiver' of these notch filters available so that multiple notches could be implemented simply by dragging them into position. A great idea, in my opinion, and one which cw op's would also find useful, particularly those of us who prefer to use wider filter settings where the NR is more effective. 73, Dale WA8SRA Joe - AB1DO wrote: Hi all, I have noticed that when someone is tuning on top of a SSB signal, the strong carrier causes the AGC to cut down the volume, thus rendering a weak SSB signal all but inaudible. This is what I would expect, I guess However, when I activate ANF (Block LMS), the carrier's effect is killed, but the AGC keeps limiting the audio of the weak SSB signal, thus still rendering it barely audible. When the carrier itself disappears, the AGC increases audio again. Do others experience the same? Am I overlooking something, some setting? Can anything be done about this? Thanks for any help, 73 de Joe - AB1DO Configuration: Dell Dimension 4700 /w 3GHz P4 HT + 1GB DDR2 SDRAM + Intel 915G Express + XPHomeSP2 SDR-1000 + RFE + 100W PA Delta-44 + Break-out kit -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/f310a4b6/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] Transmit euqalizer + Gate causes lock-up in SVN821
Hi Joe I generally do not use the equalizer as I have a Behringer UB802. I put it in service for testing. I did not observe any of the symptom you described. 73, José - F5JD Joe - AB1DO a écrit : Hi All, Using SVN 821 and I have noticed that when trying to use both the transmit equalizer and the noise gate, PowerSDR will not transmit any audio at all in SSB. Lowering the Gate value does not change anything. The panadapter freezes, cpu processing shoots up to for me an unprecedented 85-90% (usually around 20% when transmitting audio) and no audio is transmitted. PowerSDR itself does not lock up. No other DSP or other processing of any kind is used. If I disable either the Gate or the Transmit Equalizer, there is no problem, i.e. I can use either separately but not both together. Is anyone else experiencing this? Or is there something I'm possibly overlooking? Thanks, 73 de Joe - AB1DO Configuration: Dell Dimension 4700 /w 3GHz P4 HT + 1GB DDR2 SDRAM + Intel 915G Express + XPHomeSP2 SDR-1000 + RFE + 100W PA Delta-44 + Break-out kit -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/76347ffa/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/
