Search found 99 matches
- Tue Aug 29, 2017 11:47 pm
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
The above "begs the question": Are these delays entirely a translation in time of the FT8 waveform... or are the first few hundred milliseconds of the transmitted waveform being chopped off? I believe that the first few hundred milliseconds are important for decoding by the receiver at the...
- Tue Aug 29, 2017 11:02 pm
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
Scott I made the following additional measurement: Two channel scope. Input 1 is the voltage on the PTT line between the ANAN-10E and my Elecraft KXPA100 amplifier. The scope triggers on the negative transition of this voltage waveform... i.e. when the ANAN-10E switches to transmit, and draws curren...
- Tue Aug 29, 2017 5:20 am
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
Scott
Okay...
Thanks for the additional comments/thoughts
As you suspected, I am also using Meinberg to synchronize my computer's clock to UTC.
I also have the WSJT transmit delay set to 0.
Nothing additional to add for now.
Stu
Okay...
Thanks for the additional comments/thoughts
As you suspected, I am also using Meinberg to synchronize my computer's clock to UTC.
I also have the WSJT transmit delay set to 0.
Nothing additional to add for now.
Stu
- Tue Aug 29, 2017 2:57 am
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
Scott As an experiment: Set your waterfall "high level" to +10dBm See if you observe a noticeable delay between the switch to transmit mode on the waterfall, and the appearance of the FT8 (or JT65) signal. Also, see if you notice any "glitches" on the transmitted waterfall trace....
- Tue Aug 29, 2017 12:39 am
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
Scott Thanks for the comments. The frequency counter is locked to the same 10MHz gps-disciplined reference as the ANAN-10E. When I use the VAC-1 + VMB approach... I can see a substantial time delay between the switch of the ANAN-10E to transmit... which starts the waterfall display of the transmitte...
- Mon Aug 28, 2017 10:11 pm
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Re: Input/Output Frequency shift with UPhoria 204HD
Replying to my own post: It occurred to me that the UMC204HD is employing its own internal clock to withdraw samples from its buffer, and to drive its D/A converter. -0.28Hz/1700Hz => -165ppm. That sounds somewhat inaccurate for a modern crystal clock... but maybe that's what this digital audio inte...
- Mon Aug 28, 2017 6:40 pm
- Forum: Digital ("Virtual") Audio
- Topic: Input/Output Frequency shift with UPhoria 204HD
- Replies: 16
- Views: 15251
Input/Output Frequency shift with UPhoria 204HD
I'm experimenting with the use of a UPhoria UMC204HD as an audio interface for FT8 (and also JT65/JT9). ANAN-10E analog audio line output (left channel) => UMC204HD left channel line input (with 20dB attenuator activated) => WSJT digital audio input (selected from the WSJT input pull-down menu). WJS...
- Fri Aug 18, 2017 4:57 pm
- Forum: Microphones, Speakers & Audio Hardware
- Topic: ANAN-10E no audio out
- Replies: 10
- Views: 10665
Re: ANAN-10E no audio out
Gordon
Also... try reinstalling the firmware. Note that the firmware sits in the control path that (for example) mutes the front panel output from the audio codec.
Stu
Also... try reinstalling the firmware. Note that the firmware sits in the control path that (for example) mutes the front panel output from the audio codec.
Stu
- Sun Aug 13, 2017 3:51 pm
- Forum: PowerSDR mRX
- Topic: Panadapter & waterfall settings
- Replies: 11
- Views: 59052
Re: Panadapter & waterfall settings (and why your waterfall looks terrible on TX)
If you prefer to have the waterfall produce useful information when transmitting: In the settings=>display=> RX1 window... Set the "high" level of the waterfall to +20dBm. This will provide a useful waterfall on transmit... at the expense of a pretty much useless waterfall on receive. Howe...
- Fri Aug 04, 2017 4:40 pm
- Forum: PowerSDR mRX
- Topic: Issue with XMIT on Anan 8000DLE
- Replies: 6
- Views: 6425
Re: Issue with XMIT on Anan 8000DLE
Gary I had the exact same problem (the progress bar stalled when I opened HPSDR) with my Windows 10 -based computer every time I installed a Windows 10 update. I was using a USB hub that was several years old, and also a couple of older digital audio interfaces that did not have available Windows 10...
- Fri Aug 04, 2017 1:10 am
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: Pure Signal and a Trapezoid pattern
- Replies: 5
- Views: 8587
Re: Pure Signal and a Trapezoid pattern
As a separate issue...
If you want to display a traditional AM or DSB trapezoid pattern... RF output v. audio Input... you will need to take into account the relatively large delay (latency) between the applied audio input and the modulated RF output.
Stu
If you want to display a traditional AM or DSB trapezoid pattern... RF output v. audio Input... you will need to take into account the relatively large delay (latency) between the applied audio input and the modulated RF output.
Stu
- Mon Jul 31, 2017 5:55 pm
- Forum: PowerSDR mRX
- Topic: DUP, Anan Step Atten, S-ATT, ATT on TX ??
- Replies: 8
- Views: 7189
Re: DUP, Anan Step Atten, S-ATT, ATT on TX ??
I completely agree with Scott. As an additional comment: I set my TX display settings essentially as Scott does: MAX=+20dBm, MIN=-60dBm, Step= 2dB But When using WSJT (where the WSJT app provides a separately derived received waterfall display) ... I set the ANAN's RX 1 waterfall to: "High Leve...
- Mon Jul 31, 2017 2:52 am
- Forum: Diversity Operations (PowerSDR & Thetis)
- Topic: Diversity Operations
- Replies: 53
- Views: 115093
Re: Diversity Operations
Scott I respectfully disagree with the last sentence of your last post. If the interference component of the signal at the output of the magnetic loop is smaller than the interference component of the signal at the output of the main antenna ... one can just amplify the signal at the output of the m...
- Tue Jul 25, 2017 5:26 pm
- Forum: PowerSDR mRX
- Topic: PSDR mRX General use questions...
- Replies: 23
- Views: 19708
Re: PSDR mRX General use questions...
Gary Please answer these additional questions: 0. Are you using an external RF power amplifier? What RF output power level (coupled into the antenna system) are you producing when you operate? What frequency (frequencies) are you using? 1. What computer are you using (brand, model, CPU type, quantit...
- Fri Jul 14, 2017 7:31 pm
- Forum: Digital ("Virtual") Audio
- Topic: Recent problem using VMB
- Replies: 9
- Views: 12793
Re: Recent problem using VMB
Scott Here is what I obtained using LatencyMon PC= Dell: I7-4790@3.60Hz, Win10Pro, NVidia GeForce GT 720 Running: PowerSDR, ANAN-10E via point-to-point Ethernet, Voicemeeter Banana, WJST-X, Internet Explorer via WLAN, plus miscellaneous other applications. Everything working okay. Power SDR main GUI...
- Fri Jul 14, 2017 2:57 am
- Forum: Digital ("Virtual") Audio
- Topic: Recent problem using VMB
- Replies: 9
- Views: 12793
Re: Recent problem using VMB
Tony Out of curiosity, have you tried selecting MME for the VAC 1 driver? I know that ASIO is recommended for lower latency... but, of course, latency isn't an issue with the digital modes. I don't hear any "pops" (now that I have fixed the problem that I described earlier). On transmit, e...
- Thu Jul 13, 2017 7:20 pm
- Forum: Digital ("Virtual") Audio
- Topic: Recent problem using VMB
- Replies: 9
- Views: 12793
Re: Recent problem using VMB
Tony Thanks for the suggestion. I updated all of the Ethernet adapter settings as recommended in this document: https://helpdesk.flexradio.com/hc/en-us/articles/202118518-Optimizing-Ethernet-Adapter-Settings-for-Maximum-Performance But... the VMB audio output dropout problem still remained. I change...
- Thu Jul 13, 2017 5:47 pm
- Forum: Digital ("Virtual") Audio
- Topic: Recent problem using VMB
- Replies: 9
- Views: 12793
Recent problem using VMB
I am having a problem with VoiceMeeter Banana that appears to have popped up after the latest Win10 cumulative update (July 11). Every few seconds, the audio output of VMB ( which I can monitor even with the HPSDR app closed )... in response to various audio inputs that I have tried... appears to dr...
- Thu Jun 29, 2017 10:10 pm
- Forum: Digital Mode, Rig Control & Logging Software
- Topic: A bit of rx audio at start of transmission
- Replies: 5
- Views: 7338
Re: A bit of rx audio at start of transmission
If there is a source of delay (latency) in the receive audio chain... for example, wireless Bluetooth headphones... then you will keep hearing the received audio for several hundred milliseconds after the transceiver has switched to transmit. It notice this when I use Bluetooth headphones to monitor...
- Sat Jun 17, 2017 5:58 pm
- Forum: PowerSDR mRX
- Topic: VAC Fails after Win 10 Creators Upgrade
- Replies: 8
- Views: 8772
Re: VAC Fails after Win 10 Creators Upgrade
As an addendum to my earlier post: I uninstalled and reinstalled Voicemeeter Banana. That fixed the problem of the missing "Voicemeeter Output" in the list of ANAN-10 VAC1 available input devices... and also in the list of Windows Sound "Playback Devices". After reinstalling VMB,...
- Sat Jun 17, 2017 3:40 pm
- Forum: PowerSDR mRX
- Topic: VAC Fails after Win 10 Creators Upgrade
- Replies: 8
- Views: 8772
Re: VAC Fails after Win 10 Creators Upgrade
Brent My Win 10 -based setup has always been finicky on Windows updates* After installing the "Creators" update... yesterday... I had the problem you describe (VAC1 not providing audio input to the ANAN-10E on transmit). I noticed that in the HPSDR audio settings... the VAC1 settings had c...
- Wed May 24, 2017 2:40 am
- Forum: Microphones, Speakers & Audio Hardware
- Topic: Behringer C1
- Replies: 8
- Views: 9223
Re: Behringer C1
Scott Couldn't Buck use the microphone level input (left) side of the Focusrite Solo just as a combination phantom supply and preamplifier for the Behringer condenser microphone... and then connect the unbalanced (RCA jack) analog output on the back of the Focusrite Solo directly to the analog front...
- Tue May 16, 2017 5:05 pm
- Forum: PowerSDR mRX
- Topic: PowerSDR mRX PS 3.3.17 released
- Replies: 7
- Views: 8860
Re: PowerSDR mRX PS 3.3.17 released
Doug
Your tireless efforts and dedication are very much appreciated.
Stu
Your tireless efforts and dedication are very much appreciated.
Stu
- Mon May 15, 2017 12:46 am
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
If an oscilloscope is not available, one can do the following: Adjust the drive so that, in "tune", the transmitter produces 25W (not 100W) of output. Turn the transmitter off. Remove the Pure Signal coaxial jumper. Connect the Pure Signal output port of the internal coupler directly to th...
- Sun May 14, 2017 5:11 pm
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
Based on Chris's observation that: using the internal coupler, and with 100W output, Pure Signal sets the step attenuator to 17dB...... The transceiver is set to 100W output = +50dBm The input power to the A/D converter (that is set by Pure Signal... using the "auto attenuate" algorithm in...
- Sun May 14, 2017 2:36 pm
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
Chris Attached, is the URL of the KC9XG-SDR Yahoo Groups web site (files section), that contains (February 26 listings) block diagrams of the 8000. Note that, if the coupling loss of the internal coupler were 14dB too low (compared to what was desired to prevent overload of the step attenuator... e....
- Sun May 14, 2017 1:54 am
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
Chris Without knowing the coupling loss of the internal coupler (I.e. how much loss there is between the 100W output of the 8000 and the Pure Signal feedback output port of the internal coupler)... all you are observing is that the coupling loss of the internal coupler is 12dB less than the coupling...
- Fri May 12, 2017 5:54 pm
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
I have an inexpensive 7.040 MHz S9 (-73dBm) signal reference that I purchased from Elecraft a few years ago. They sell an upgraded (but more expensive) version now... that has three frequency selections. It would be very easy to make one of these (see the XG-1 schematic in the XG-1 manual on the Ele...
- Thu May 11, 2017 4:41 pm
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
If the preamplifier gain is 14dB instead of 20dB* and the volunteers who develop the software don't know that... then the S-meter readings and the panadapter readings will also be 6dB low. *This sounds like only one side (+ ground) of the balanced input to the preamplifier is being used. The extra ~...
- Thu May 11, 2017 3:51 pm
- Forum: PureSignal Operations (PowerSDR & Thetis)
- Topic: 8000DLE step attenuator values with auto-attenuate
- Replies: 25
- Views: 24441
Re: 8000DLE step attenuator values with auto-attenuate
Chris Scott The LTC6400 low noise preamplifier... that is included in the front end amplification chain of each receiver... has an "enable" pin. Could it be that, in the 8000 transceiver, this 20dB gain block is being disabled on transmit (to protect the A/D converter)? That would explain ...