Re: [Flexradio] Max power out on Digital modes
Thanks Tim -Original Message- From: Tim Ellison [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 27, 2008 7:17 PM To: Dave Beumer WA3FDB; flexradio@flex-radio.biz Subject: RE: [Flexradio] Max power out on Digital modes You can run full duty cycle digital modes at 100 watts if the transmissions are intermittent, like operating a RTTY contest for hours on end. If you are rag chewing on digital modes where the transmissions are long and the breaks are short, then 50 watts is a good output power level unless good operating practice dictates to use less wattage, like for PSK31. The key is to not let the PA get too toasty. I'd monitor the PA temperature by bringing up the Information window using ++I and not allowing the temperature to get into the red (which I think is around 50 C). -Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Beumer WA3FDB Sent: Wednesday, February 27, 2008 7:19 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Max power out on Digital modes I know I have seen it in writing , but I can't locate the info now. What is the recommended power output level for the 5000A running in Digital Modes ? Thanks Dave - WA3FDB ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] Slider Controls
Is there any way to reduce the sensitivity of the slider bars, particularly the Width and Shift under filters. The shift slider is real sensitive and it would be nice to reduce the sensitivity to make it easier to move a signal in or out of the passband. Don - kx9q ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] CW Issues?
I was operating CW this evening using an external keyer - WKUSB - without any problems. I then decided to try the CWX mode. I made Keys Active and started typing some info and the radio started chattering - probably the relay with no real power output. I went back to the external keyer and it was acting very erratic. I stopped PSDR and started it again and that did not help. I then stopped PSDR and closed it out. I then restarted it and everything appeared to be ok. PDSR was the only program running, the radio was the F5K and the OS was XP with 4gb of memory. I was running about 35 watts. Don - kx9q ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Max power out on Digital modes
You can run full duty cycle digital modes at 100 watts if the transmissions are intermittent, like operating a RTTY contest for hours on end. If you are rag chewing on digital modes where the transmissions are long and the breaks are short, then 50 watts is a good output power level unless good operating practice dictates to use less wattage, like for PSK31. The key is to not let the PA get too toasty. I'd monitor the PA temperature by bringing up the Information window using ++I and not allowing the temperature to get into the red (which I think is around 50 C). -Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Beumer WA3FDB Sent: Wednesday, February 27, 2008 7:19 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Max power out on Digital modes I know I have seen it in writing , but I can't locate the info now. What is the recommended power output level for the 5000A running in Digital Modes ? Thanks Dave - WA3FDB ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] Max power out on Digital modes
I know I have seen it in writing , but I can't locate the info now. What is the recommended power output level for the 5000A running in Digital Modes ? Thanks Dave - WA3FDB ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] Looking for FLEX-5000A owners in Southern California...
I am looking for other FLEX-5000A owners in the LA & Orange County area. I want to find someone who successfully operates CW from the rear jack wo/ any problems. I have been unable to use the rear key jack due to erratic response using both paddles and straight keys. I did find one owner, but his 5000A cannot easily be swapped out with mine, and I didn't want to trouble him. Thought I was the only one with a crowded shack, hi hi. 73, Steve N6VL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Some VAC Latency observations FWIW
At the request of NU6X, I have made a couple of additional measurements of VAC latency at 48000 samples per second. On my system, running the sample rate at 48000 with the MME driver is problematic, therefore I ran the measurements with the "windows direct sound" (WDS) driver at both 12000, and 48000 samples per second. It appears that about 100 msec of latency in my measure is unaffected by setting within PSDR. This latency could be either in PSDR or in my MOBO sound card (see set up description below. ) If I figure out how do separate the two I'll let you know. _MME, 12k sps _ _SVN 2006, WDS_ Buffer SVN SVN 12k sps 48Ksps size 1976 2006 128 --- 134 msec 128 101msec 256 ---149 msec 132 105msec 512 522 166 msec 165 116msec 1024522 290 msec 295 129msec 2048522 422 msec 420 166msec (measurement accuracy +- 3msec ) In addition I looked at the WDM-KS driver and it exhibits latency growth like the MME driver, resulting in latencies in the 2-5 second range. Only the WDS driver appears to be immune to the latency growth problem. AL, K0VM > I have looked a little more at the VAC latency problem using my > Audacity latency measurement technique and wish to add a couple more > observations. > > 1.) Using the SVN branch version by W2RF, I discovered that the > change latency is a function of PSDR VAC driver selected. With the > MME driver I can cause the latency to increase into the 3-5 second > range. With the "Windows Direct Sound" driver, change in latency > appears to be non-existent. > > 2. ) VAC in release version of PSDR (1.10.4) and the latest SVN trunk > version svn 1979 appears to be impaired as compared to the SVN branch > version by W2RF (svn 2006 ). > In the W2RF version, the initial latency is dependent on the SDR > VAC buffer size. In both the release version and the trunk version > the initial latency is not effected by the PSDR VAC buffer size and > appears to be a bit greater that the 2048 buffer size latency of the > branch version. In addition operation with PSDR VAC drivers other > that MME tends to be unstable ( breakups, looped buffers,etc. ). > > Buffer SVN SVN Sample rate = 12000 > size 19762006128 --- 134 msec > 256 --- 149 msec > 512 522 166 msec > 1024522 290 msec > 2048522 422 msec > > If you are concerned with VAC latency, you might wish to try the SVN > Branch version by W2RF and try the 'Windows Direct Sound" driver. > > AL, K0VM > > > > > - Original Message - > From: Al > To: flexradio@flex-radio.biz > Sent: Sunday, February 24, 2008 2:53 PM > Subject: [Flexradio] Some VAC Latency observations FWIW > > > I have recently completed a set of measurements on PowerSDR "VAC > output" latency > during receive. I am not talking about latency in the VAC program, it > was not a part of > these measurements. > The test conditions were limited to my ONE set of hardware/software, > other > hardware/software may get different results. The test was with > SDR-1000, > D44, AMD sempron > 3300+ @ 2ghz w/ 2MB ram & Realtek on-board sound, WinXP, PowerSDR > 1.10.4 > SVN 1985. When > you set up your VAC you may have noticed that the PSDR set up, by > default, points to the > system default sound device. If VAC is enabled you can hear delayed > receive audio through > your system sound card. Adding a patch cord from the D44 speaker output > to the LEFT channel > of the system LINE IN and another from the system speaker out to the > RIGHT channel LINE IN, > and configuring the system sound control channels, I can use > Audacity to > record and measure > the delay between the two sound sources. ( I use WVV as a signal source > when making my > latency measurements, nice time ticks. ) The "Virtual Audio Cable" > software is NOT used in > these measurements. > What I am calling "VAC output" latency I am assuming is due to > latency within > PowerSDR, but could as well be latency in the system sound channel or a > combination of the > two. However, the fact that latency is observed with programs (Mixw, > MTTY,etc ) used in > conjunction with the VAC software lead me to suspect that most of the > latency is within > PSDR. > I can confirm the observation of others that the latency increases > over time and > that toggling the VAC button within PSDR "resets" the delay to minimum. > In the PSDR VAC setup form, neither buffer size nor latency options > have any > significant effect on the measured latency. The VAC Sample rate does > have an effect on the > initial latency. > VACInitial Sample Rate Laten
[Flexradio] test
test ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
