Search found 1682 matches

by w-u-2-o
Mon May 20, 2019 10:44 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

My guess would be buffers associated with the stream to the CODEC on the SDR board are slowly filling up, whereas the buffers associated with the ASIO stream are being kept reliably empty.
by w-u-2-o
Mon May 20, 2019 1:03 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

That's great data, Paul, thank you! Delay is only a single "PARIS" dot at 40WPM, or half a dot at 20WPM. The important take-away from this is that, with an properly tuned ASIO sound interface, virtualized CW operation is possible with no degradation of QSK performance or sidetone in QSK mo...
by w-u-2-o
Sun May 19, 2019 9:13 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

You save at least 10ms in both TX and RX directions when using a low latency filter of any size compared to a linear phase filter of length 2048. IMHO it's worth using the low latency filter. Because the low latency filters are minimum phase FIR filters their latency does not change with size and re...
by w-u-2-o
Sun May 19, 2019 6:48 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

That's fabulous, Paul! And it really demonstrates the big difference that ASIO drivers and hardware can make. Chris, W2PA, and I did an experiment using a non-ASIO drivers and could not get the latency down low enough to do what you are doing. Unfortunately Chris does not have any ASIO hardware. Wer...
by w-u-2-o
Sun May 19, 2019 6:13 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

Paul,

There is no sidetone via VAC. I am curious what you are hearing. Are you using PowerSDR or Thetis? If Thetis, do you have QSK turned on?

73,

Scott
by w-u-2-o
Sat May 18, 2019 12:14 pm
Forum: Network Connections & Network Hardware
Topic: Do not use APIPA when programming an IP address!
Replies: 9
Views: 1607

Re: Do not use APIPA when programming an IP address!

There have been probably a dozen people who have contacted me over the past 4 years because they could not get a static assignment to work and I am wondering now if they tried to set the IP while directly connected with the ANAN sitting there with its APIPA self configuration assignment and ran int...
by w-u-2-o
Fri May 17, 2019 9:37 pm
Forum: Network Connections & Network Hardware
Topic: Do not use APIPA when programming an IP address!
Replies: 9
Views: 1607

Re: Do not use APIPA when programming an IP address!

Again, if, hypothetically speaking, if the radio has an IP of 192.168.1.5, and the PC is 192.168.1.4, then it should not matter if the radio subnet mask is 255.255.0.0. With that subnet mask the radio should happily communicate with any IP in the range of 192.168.x.x. I just took a look through the ...
by w-u-2-o
Fri May 17, 2019 9:26 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

Paul, You are on the right track! As Bryan has explained before, the Portaudio settings are meaningless for ASIO and should be set to zero when using ASIO. The next and last order of business is to see how small you can get the buffer latency settings. I have mine set to In 5 and Out 3. Also, I was ...
by w-u-2-o
Fri May 17, 2019 2:06 pm
Forum: Network Connections & Network Hardware
Topic: Do not use APIPA when programming an IP address!
Replies: 9
Views: 1607

Re: Do not use APIPA when programming an IP address!

What is described doesn't seem to be a problem. It is the normal functioning of APIPA. Since APIPA will randomly assign an IP of form 169.254.x.x using the last two octets the APIPA subnet mask MUST be 255.255.0.0 on any interface that uses APIPA, PC or radio. If it is not then there is a good chanc...
by w-u-2-o
Thu May 16, 2019 10:46 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

Is it working well, Paul? Does the resampler Var ratio stay at 1.0?
by w-u-2-o
Sat May 11, 2019 11:24 pm
Forum: Orion Mk II (7000DLE, 7000DLE MKII, 8000DLE)
Topic: Warning for 7000DLE MKII owners
Replies: 16
Views: 2685

Re: Warning for 7000DLE MKII owners

Gary,

The J14 jumper must be installed if you have the newer memory IC. This is true for any firmware you choose to load, P1 or P2, in any order, with any of the three firmware loading app's.

73,

Scott
by w-u-2-o
Fri May 10, 2019 4:29 pm
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Re: Resampler Adjustment

And there you go: you just have to find the combo that works! My recommendation, as in the original write up, is find the VAC buffer size that works the best with everything else in "auto" first, then start fooling with the manual settings.

73!

Scott
by w-u-2-o
Fri May 10, 2019 2:22 pm
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

I'm pretty sure Bryan uses one of these:

http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=234

with one output set to 10MHz for the radio hardware, and the other output set to 48KHz for his audio hardware.

73,

Scott
by w-u-2-o
Fri May 10, 2019 12:44 pm
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Re: Resampler Adjustment

Helmut, What happens if you uncheck all "Manual" checkboxes and adjust VAC buffer size to the minimum that will work properly? Also, do you listen to the actual audio coming out of VAC to determine if it sounds OK, by ear? This is easy to do with Voicemeeter. Make sure you have a valid aud...
by w-u-2-o
Fri May 10, 2019 2:40 am
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Re: Resampler Adjustment

I've never been able to duplicate this problem. This is what I get with the resampler fully active in Thetis (and the same in PowerSDR):

Fast AGC, Linear Phase Filter, optimized ATT, I'm getting plenty of -24dB decodes (can you do better than -24?)

Capture.JPG
Capture.JPG (420.73 KiB) Viewed 3627 times
by w-u-2-o
Wed May 08, 2019 10:00 pm
Forum: Orion Mk II (7000DLE, 7000DLE MKII, 8000DLE)
Topic: Warning for 7000DLE MKII owners
Replies: 16
Views: 2685

Re: Warning for 7000DLE MKII owners

And I just heard about another user who received their 7000DLE MKII apparently pre-bricked, and with the jumper missing. :o
by w-u-2-o
Wed May 08, 2019 9:59 pm
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Re: Resampler Adjustment

Helmut,

When force is off, are you getting under or overflow counts in a steady stream on the resampler?

73,

Scott
by w-u-2-o
Wed May 08, 2019 1:03 pm
Forum: Thetis
Topic: Seq Errors Explained
Replies: 7
Views: 2594

Seq Errors Explained

"Seq" errors are shown when a packets are missing from the UDP packet stream coming FROM the hardware TO the PC. Packets associated with each DDC stream and mic stream are given sequential packet numbers, hence the "Seq" designation. Different Seq error codes are assigned to each...
by w-u-2-o
Mon May 06, 2019 1:38 am
Forum: Orion Mk II (7000DLE, 7000DLE MKII, 8000DLE)
Topic: Warning for 7000DLE MKII owners
Replies: 16
Views: 2685

Re: Warning for 7000DLE MKII owners

Doug,

If you have already successfully updated firmware then there is nothing to worry about.

I'm not aware of a procedure to take the bottom off. I have an 8000 here so I'm no help on that part of it ;)

73,

Scott
by w-u-2-o
Sun May 05, 2019 2:41 pm
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Re: Resampler Adjustment

It remains a mystery why so many people are having such trouble. There is clearly something we all don't understand about how buffers should be set. Most serious audio software adjusts buffering in a completely automatic way with no significant latency. Any DAW application is a good example of this....
by w-u-2-o
Sun May 05, 2019 1:50 pm
Forum: Protocol 2 (all radios)
Topic: Warning for 7000DLE MKII owners
Replies: 0
Views: 1110

Warning for 7000DLE MKII owners

If your radio is missing a jumper because it was not properly installed at the factory it is possible that programming firmware can brick your radio. There is a solution. See https://apache-labs.com/community/viewtopic.php?f=27&t=3081
by w-u-2-o
Sun May 05, 2019 1:47 pm
Forum: Orion Mk II (7000DLE, 7000DLE MKII, 8000DLE)
Topic: Warning for 7000DLE MKII owners
Replies: 16
Views: 2685

Warning for 7000DLE MKII owners

Introduction As of the date of this post there have been at least two unfortunate "bricking" incidents when programming new firmware onto 7000DLE MKII units. Bricking is a slang term for a situation where both the normal and Bootloader FPGA images in non-volatile memory are corrupt and no...
by w-u-2-o
Sun May 05, 2019 2:22 am
Forum: Protocol 2 (all radios)
Topic: RX1 or RX2 noise floor goes full scale on Ver 1.9
Replies: 12
Views: 989

Re: RX1 or RX2 noise floor goes full scale on Ver 1.9

Gary,

Other than your RX2 issue, which may be Thetis related, how is 2.0 working for you?

73,

Scott
by w-u-2-o
Sat May 04, 2019 9:50 pm
Forum: Protocol 2 (all radios)
Topic: 7000 and 8000 Protocol 2 users: what say you?
Replies: 40
Views: 4968

Re: 7000 and 8000 Protocol 2 users: what say you?

So far, so good, Rick. Running the 8K with Thetis 2.6.7 at 768KHz. No Seq's, solid PS, RX2 and diversity. Essentially zero TX time, though. More to follow as I get some TX time on it.

Thanks!

Scott
by w-u-2-o
Sat May 04, 2019 8:14 pm
Forum: Orion Mk II (7000DLE, 7000DLE MKII, 8000DLE)
Topic: Orion MKII Protocol 1 Firmware Version 2.7 Released
Replies: 0
Views: 584

Orion MKII Protocol 1 Firmware Version 2.7 Released

Posting this for Joe, K5SO (k5so@k5so.com) ### All, I have reworked the timing on protocol 1 firmware for the 7000DLE/7000DLE MkII/8000DLE. This Orion_MkII_v2.7_K5SO_5-4 version works for the testers who have kindly tested it for me and it works fine here on 7000DLE and 8000DLE platforms. This vers...
by w-u-2-o
Sat May 04, 2019 1:33 pm
Forum: PowerSDR mRX
Topic: Resampler Adjustment
Replies: 24
Views: 4017

Resampler Adjustment

PowerSDR mRX 3.4.8 introduced an Adaptive Variable Resampler option for VAC audio. The implementation is a true resampler and not just a data "smoother". Since both the radio and the PC use different clocks to obtain their nominal 48KHz audio sampling rate, the rate in the radio will not e...
by w-u-2-o
Fri May 03, 2019 3:24 pm
Forum: Protocol 2 (all radios)
Topic: P2 version 10.3 released for 14-bit Hermes (10E and 100B)
Replies: 5
Views: 975

P2 version 10.3 released for 14-bit Hermes (10E and 100B)

Phil has succeeded in updating the P2 firmware for the small FPGA on the 14-bit Hermes design (used in the ANAN-10E and ANAN-100B). This is quite remarkable as the FPGA is at 99% utilization, a very, very difficult state of affairs to manage! https://github.com/TAPR/OpenHPSDR-Firmware/tree/master/Pr...
by w-u-2-o
Fri May 03, 2019 10:38 am
Forum: Microphones, Speakers & Audio Hardware
Topic: Presonus Studio 192 Mobile
Replies: 46
Views: 3805

Re: Presonus Studio 192 Mobile

That's correct. It is a 5V unipolar square wave. The standard impedance of a word clock input is 75 ohms.

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