Search found 96 matches

by AB2EZ
Tue Aug 29, 2017 2:57 am
Forum: Digital ("Virtual") Audio
Topic: Input/Output Frequency shift with UPhoria 204HD
Replies: 16
Views: 9050

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....
by AB2EZ
Tue Aug 29, 2017 12:39 am
Forum: Digital ("Virtual") Audio
Topic: Input/Output Frequency shift with UPhoria 204HD
Replies: 16
Views: 9050

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...
by AB2EZ
Mon Aug 28, 2017 10:11 pm
Forum: Digital ("Virtual") Audio
Topic: Input/Output Frequency shift with UPhoria 204HD
Replies: 16
Views: 9050

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...
by AB2EZ
Mon Aug 28, 2017 6:40 pm
Forum: Digital ("Virtual") Audio
Topic: Input/Output Frequency shift with UPhoria 204HD
Replies: 16
Views: 9050

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...
by AB2EZ
Fri Aug 18, 2017 4:57 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: ANAN-10E no audio out
Replies: 10
Views: 5935

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
by AB2EZ
Sun Aug 13, 2017 3:51 pm
Forum: PowerSDR mRX
Topic: Panadapter & waterfall settings
Replies: 11
Views: 25509

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...
by AB2EZ
Fri Aug 04, 2017 4:40 pm
Forum: PowerSDR mRX
Topic: Issue with XMIT on Anan 8000DLE
Replies: 6
Views: 3741

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...
by AB2EZ
Fri Aug 04, 2017 1:10 am
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Pure Signal and a Trapezoid pattern
Replies: 5
Views: 5705

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
by AB2EZ
Mon Jul 31, 2017 5:55 pm
Forum: PowerSDR mRX
Topic: DUP, Anan Step Atten, S-ATT, ATT on TX ??
Replies: 8
Views: 4043

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...
by AB2EZ
Mon Jul 31, 2017 2:52 am
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: Diversity Operations
Replies: 46
Views: 43601

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...
by AB2EZ
Tue Jul 25, 2017 5:26 pm
Forum: PowerSDR mRX
Topic: PSDR mRX General use questions...
Replies: 23
Views: 11321

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...
by AB2EZ
Fri Jul 14, 2017 7:31 pm
Forum: Digital ("Virtual") Audio
Topic: Recent problem using VMB
Replies: 9
Views: 8436

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...
by AB2EZ
Fri Jul 14, 2017 2:57 am
Forum: Digital ("Virtual") Audio
Topic: Recent problem using VMB
Replies: 9
Views: 8436

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...
by AB2EZ
Thu Jul 13, 2017 7:20 pm
Forum: Digital ("Virtual") Audio
Topic: Recent problem using VMB
Replies: 9
Views: 8436

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...
by AB2EZ
Thu Jul 13, 2017 5:47 pm
Forum: Digital ("Virtual") Audio
Topic: Recent problem using VMB
Replies: 9
Views: 8436

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...
by AB2EZ
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: 4482

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...
by AB2EZ
Sat Jun 17, 2017 5:58 pm
Forum: PowerSDR mRX
Topic: VAC Fails after Win 10 Creators Upgrade
Replies: 8
Views: 5290

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,...
by AB2EZ
Sat Jun 17, 2017 3:40 pm
Forum: PowerSDR mRX
Topic: VAC Fails after Win 10 Creators Upgrade
Replies: 8
Views: 5290

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...
by AB2EZ
Wed May 24, 2017 2:40 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Behringer C1
Replies: 8
Views: 5667

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...
by AB2EZ
Tue May 16, 2017 5:05 pm
Forum: PowerSDR mRX
Topic: PowerSDR mRX PS 3.3.17 released
Replies: 7
Views: 5385

Re: PowerSDR mRX PS 3.3.17 released

Doug

Your tireless efforts and dedication are very much appreciated.

Stu
by AB2EZ
Mon May 15, 2017 12:46 am
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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...
by AB2EZ
Sun May 14, 2017 5:11 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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...
by AB2EZ
Sun May 14, 2017 2:36 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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....
by AB2EZ
Sun May 14, 2017 1:54 am
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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...
by AB2EZ
Fri May 12, 2017 5:54 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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...
by AB2EZ
Thu May 11, 2017 4:41 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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 ~...
by AB2EZ
Thu May 11, 2017 3:51 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: 8000DLE step attenuator values with auto-attenuate
Replies: 25
Views: 15584

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 ...
by AB2EZ
Wed May 10, 2017 3:35 pm
Forum: Upgrading/Downgrading
Topic: Anan-10E upgrade to Firmware v1.5
Replies: 4
Views: 6750

Re: Anan-10E upgrade to Firmware v1.5

Andrew

The Programmer does not work with the 10e because the FPGA of the 10e is not large enough to accommodate the Programmer's firmware updating process. This has been the case since the 10e was introduced.

Stu
AB2EZ
by AB2EZ
Fri May 05, 2017 3:04 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: ANAN-100B Pure Signal Connection
Replies: 23
Views: 16318

Re: ANAN-100B Pure Signal Connection

Bernhard and Scott I haven't checked my theoretical results with a separate receiver... but perhaps some others, in addition to Scott... who have access to a physically separate SDR... can comment. Someday I will upgrade to a new SDR model, and I will use the new SDR to verify the IMD improvement pr...
by AB2EZ
Thu May 04, 2017 3:18 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: ANAN-100B Pure Signal Connection
Replies: 23
Views: 16318

Re: ANAN-100B Pure Signal Connection

Bernhard If your ANAN 100 is set to produce 92W of output => approximately +50dBm... and the internal feedback signal level (dup on, and no external feedback) is -10dBm... then the internal "crosstalk" coupling from the RF output to the RX1 input is (-10dBm) - (50dBm) = -60dB. I have previ...

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