Search found 131 matches

by K1LSB
Fri May 21, 2021 9:24 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Coupler Solutions
Replies: 11
Views: 2268

Re: Coupler Solutions

Nick, My homebuilt sampler is also pure resistive (18K ohms). I used that approach because 1) it's fairly linear (i.e., independent of frequency) and 2) to avoid any potential for undesired influence of inductive or capacitive reactance on PureSignal's operation. My memory is dim now but I probably ...
by K1LSB
Mon May 17, 2021 12:40 pm
Forum: Digital ("Virtual") Audio
Topic: How to solve latency problems and VAC under/overflows in Windows 10
Replies: 55
Views: 4143

Re: How to solve latency problems and VAC under/overflows in Windows 10

Thanks Scott, I'll check that out this evening (stuck at the work-20 all day).

Mark
by K1LSB
Mon May 17, 2021 2:03 am
Forum: Digital ("Virtual") Audio
Topic: How to solve latency problems and VAC under/overflows in Windows 10
Replies: 55
Views: 4143

Re: How to solve latency problems and VAC under/overflows in Windows 10

Scott, I want to share an idea I'm investigating. It has to do with tweaking the values in the boxes underneath the "Force" options in the VAC window. While playing with buffer sizes and pushing the envelope for minimum latencies, I was curious whether setting an optimal value in the boxes...
by K1LSB
Sat May 15, 2021 10:56 pm
Forum: Thetis
Topic: Changing Windows 10 Network Throttling Index for Better Performance
Replies: 10
Views: 2400

Re: Changing Windows 10 Network Throttling Index for Better Performance

Hi, Will the windows 10 update revert the "Throttling Index" back to the original setting, do we need to check this periodically? Thanks very much for your help. Thanks, Joe WD5Y I got a Windows update yesterday, Throttling Index is still where I set it earlier in the week (ffffffff). Mark
by K1LSB
Sat May 15, 2021 2:28 am
Forum: Thetis
Topic: Thetis 2.8.11 Released!
Replies: 233
Views: 53729

Re: Thetis 2.8.11 Released!

That behavior is by design. The only safe approach is for the ATT value to always revert to 31 anytime PS is started (or restarted) after being deactivated. That way the PS receiver is assured of minimum input signal strength to start with, given that the system has no way of knowing ahead of time h...
by K1LSB
Thu May 13, 2021 7:39 pm
Forum: PC's & Homebrew Hardware
Topic: Wait begins....
Replies: 7
Views: 2114

Re: Wait begins....

Thanks Scott, I guess that was a moot question in retrospect because I just checked and learned that all of the new (11th gen) Intel i3, i5 and i7 are hyperthreaded anyway (I didn't bother checking the i9 but I'd be gobsmacked to find out that any of those aren't also hyperthreaded). :)

Mark
by K1LSB
Thu May 13, 2021 5:53 pm
Forum: PC's & Homebrew Hardware
Topic: Wait begins....
Replies: 7
Views: 2114

Re: Wait begins....

Scott, I've noticed you make that statement elsewhere (Thetis likes cores). I also have plans to upgrade in about a year so here's my question: Strictly from a Thetis standpoint, is hyperthreading per se any great advantage? In other words, would 8 physical cores hyperthreaded (16 virtual cores) mak...
by K1LSB
Sat May 08, 2021 9:46 pm
Forum: Digital ("Virtual") Audio
Topic: How to solve latency problems and VAC under/overflows in Windows 10
Replies: 55
Views: 4143

Re: How to solve latency problems and VAC under/overflows in Windows 10

According to the Microsoft link below, the value in SystemResponsiveness "determines the percentage of CPU resources that should be guaranteed to low-priority tasks. For example, if this value is 20, then 20% of CPU resources are reserved for low-priority tasks." Effectively this means tha...
by K1LSB
Sat May 08, 2021 9:19 pm
Forum: Thetis
Topic: Band Stacking and AGC Settings
Replies: 4
Views: 451

Re: Band Stacking and AGC Settings

I agree, it is a bit odd but I can live with it.

Mark
by K1LSB
Sat May 08, 2021 7:36 pm
Forum: Thetis
Topic: Band Stacking and AGC Settings
Replies: 4
Views: 451

Re: Band Stacking and AGC Settings

AGC (and a number of other) settings aren't band stack specific, they're saved with Transmit Profile. Whatever TX profile is associated with your CW mode will contain your AGC settings. So select the Transmit Profile you want to use for CW, adjust the AGC settings to your liking then re-save that Tr...
by K1LSB
Thu May 06, 2021 2:41 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Palstar LA-1K Pure Signal Jack
Replies: 10
Views: 935

Re: Palstar LA-1K Pure Signal Jack

If it were me I'd just run a cable between that jack and the Rx Bypass jack on the Anan. It'd need to be a custom cable, with a BNC connector on one end and an RCA plug on the other end. But that's just me.. :) Mark EDIT: Here's a review by W1TR@arrl.net on that amp, it mentions the PureSignal featu...
by K1LSB
Wed May 05, 2021 5:28 pm
Forum: Digital ("Virtual") Audio
Topic: VAC under/overflows due to changes in how Windows handles Timer resolution
Replies: 55
Views: 2020

Re: VAC under/overflows due to changes in how Windows handles Timer resolution

Scott,

FWIW my VAC settings are 256 buffers and 48K sample rate, ASIO (0/0 Ringbuffers and 0/0 PortAudio as noted earlier).

Just curious, may I ask why you decided on 96K sample rate?

TIA,

Mark
by K1LSB
Wed May 05, 2021 2:14 pm
Forum: Digital ("Virtual") Audio
Topic: VAC under/overflows due to changes in how Windows handles Timer resolution
Replies: 55
Views: 2020

Re: VAC under/overflows due to changes in how Windows handles Timer resolution

Tony,

I'm at work right now so I can't verify, but I don't think there's anything else running on my system that might be controlling audio.

I do know that Windows Sound Scheme is set to "No Sounds". Maybe that's relevant, I dunno..

Mark
by K1LSB
Wed May 05, 2021 9:43 am
Forum: Digital ("Virtual") Audio
Topic: VAC under/overflows due to changes in how Windows handles Timer resolution
Replies: 55
Views: 2020

Re: VAC under/overflows due to changes in how Windows handles Timer resolution

Windows version 20H2 on an i7-6700K, no under/overflows running MOTU M4 ASIO thru Voicemeeter Potato with 0-0 Ring Buffers and 0-0 PortAudio. Prolly should count my blessings!

Mark
by K1LSB
Tue May 04, 2021 5:08 pm
Forum: Apache Labs News
Topic: Transmitter composite noise
Replies: 5
Views: 589

Re: Transmitter composite noise

Given that PureSignal is such a game-changer in terms of cleanness of signal, I'm at a complete loss to understand why none of the Big Three have yet incorporated the feature, especially given that the code is (per my understanding) open source.

Mark
by K1LSB
Tue May 04, 2021 3:47 pm
Forum: Apache Labs News
Topic: Transmitter composite noise
Replies: 5
Views: 589

Re: Transmitter composite noise

Scott, Can you please verify whether I am reading Section 5.3 in the article in the link below correctly, specifically that the IC-7610, FT2000 and FTdx101D all have rather poor SSB splatter at 2.5k offset when running 50 watts (see the table after the charts in that section)? https://drive.google.c...
by K1LSB
Tue Apr 27, 2021 4:55 pm
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

Scott, Thank you for the comments. And you're right, sometimes I really don't mind the artifacts (I rather liken it to subdued underwater gurgles) and I have observed that increasing the S-ATT suppresses the gurgles. And you're also right, in that sometimes I'd rather just turn off NR and listen to ...
by K1LSB
Tue Apr 27, 2021 1:57 am
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

PD3LK wrote:@Mark, can you make a recording like rbduck did?

Leon,

Here ya go (this is only audio, I don't know how to make a video):

https://drive.google.com/file/d/1lT9Eya ... sp=sharing

Mark
by K1LSB
Sun Apr 25, 2021 3:01 pm
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

Okay, I give up, what's an AE filter?

Mark

EDIT: Nevermind, I found it. However, mine is checked and I still get that strange audio so checking AE is not the solution for me.
by K1LSB
Sun Apr 25, 2021 3:42 am
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

I get virtually the same results when using NR2, here's my settings:

DSP NR-ANF.PNG
DSP NR-ANF.PNG (165.78 KiB) Viewed 924 times


Mark
by K1LSB
Wed Apr 21, 2021 9:09 am
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

Stu,

Good thinking, but putting a disconnect relay on the mic won't help because the problem is caused by delayed audio still coming out of the speakers after the PTT is pressed.

The solution would be for a relay to disconnect the speakers on PTT.

Mark
by K1LSB
Tue Apr 20, 2021 8:40 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 7000DLE MKII Frequency Drift
Replies: 27
Views: 1283

Re: 7000DLE MKII Frequency Drift

Scott, can you please clarify how to disable the resampler? is that done by simply checking the "Force" boxes? I think you told us once but I've forgotten..
by K1LSB
Tue Apr 20, 2021 8:35 pm
Forum: Thetis
Topic: Noise Burst on initial transmit
Replies: 76
Views: 4293

Re: Noise Burst on initial transmit

Ruben, Your observations reinforce my firm belief that the mic is picking up audio from the speakers. I also have poor hearing so I turn up my speaker volume, which of course means there's more audio coming out of the speakers for the mic to pick up, which exacerbates the burst on transmit. I notice...
by K1LSB
Wed Apr 14, 2021 12:51 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: RX2 not same signal level as RX1
Replies: 21
Views: 2717

Re: RX2 not same signal level as RX1

Since Scott asked, I had very poor sensitivity on RX2 (roughly 40 dB down from RX1) on my 7000DLE MKII which I didn't even notice until the warranty period had almost expired. I contacted the factory and they had me send it to Doug W5WC who fixed me up in a jiffy. The problem was a bad filter in the...
by K1LSB
Wed Apr 14, 2021 12:43 pm
Forum: Thetis
Topic: A "jangling" artifact on TX and RX audio, related to filter size?
Replies: 9
Views: 997

Re: A "jangling" artifact on TX and RX audio, related to filter size?

NR (and NR2) has no effect on TX audio. The jangling is on your TX audio too so turning off NR2 won't help that.

Mark
by K1LSB
Tue Apr 13, 2021 1:43 am
Forum: SDR Console
Topic: SDRConsole and Anan 7000DLE MKII
Replies: 6
Views: 1944

Re: SDRConsole and Anan 7000DLE MKII

András,

I tried my 7000DLE MKII running Protocol 2 on SDR Console V3.0.27 tonight and it behaved correctly on all bands (at least the bands I have antennae for, 80 thru 17).

Mark
by K1LSB
Mon Apr 05, 2021 7:39 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: IMPORTANT UPDATE/DO NOT USE: 7000DLE fan noise fix
Replies: 26
Views: 12612

Re: IMPORTANT UPDATE/DO NOT USE: 7000DLE fan noise fix

I put mine behind a sheetrock partition and it's much quieter in the shack now.

Mark

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