Search found 43 matches

by WA0VY
Mon Nov 13, 2017 12:17 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Astron RM 35 with 8000
Replies: 3
Views: 98

Re: Astron RM 35 with 8000

I use an Astron RM-50M and do occasionally run my 8000 barefoot full power in SSB along with a fair amount of peripheral 12 vdc stuff. The needle hardly moves past 25 amps on peak. At amp drive levels, the needle hardly moves. You should be just fine unless you plan to run full power, barefoot conti...
by WA0VY
Mon Oct 09, 2017 11:39 pm
Forum: PowerSDR mRX
Topic: Export wav file recording
Replies: 5
Views: 279

Re: Export wav file recording

Fred, I run Win 10 and can't even find Win Media Player. You may be using an earlier version of Windows. I use VLC Media Player and it plays the files just fine. I also use Audacity to convert the .wav files to .mp3 which compresses and reduces the files to a fraction of their size. Give those progr...
by WA0VY
Fri Sep 01, 2017 8:36 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: GPSDO Tutorial?
Replies: 37
Views: 2500

Re: GPSDO Tutorial?

Ok, missed the part about needing to be in DSB. However, I got the exact same result using phase and DSB as I did using USB and Phase 2 - just that the display looked somewhat different. Very nice little trick.
by WA0VY
Fri Sep 01, 2017 8:33 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: GPSDO Tutorial?
Replies: 37
Views: 2500

Re: GPSDO Tutorial?

Scott, I assume you mean Phase 2? Wow, I was very close. At 0.99999960, it barely moves counterclockwise. At 0.99999959, it reverses and is noticeably faster. So, my ear did a decent enough job.
by WA0VY
Fri Sep 01, 2017 5:23 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: GPSDO Tutorial?
Replies: 37
Views: 2500

Re: GPSDO Tutorial?

Well Scott, you ALMOST have me convinced that I can't live without one of these things. I had no idea there was such a variance in these devices and so may different things you can do with them. So, that commentary was very interesting. I currently manually calibrate and my correction factor is 0.99...
by WA0VY
Fri Aug 25, 2017 12:09 am
Forum: PowerSDR mRX
Topic: Doc on DSP FIlter vs. Buffer vs. filter type...
Replies: 5
Views: 528

Re: Doc on DSP FIlter vs. Buffer vs. filter type...

Note that, currently, is is nearly impossible to get rid of all glitches. There are some recently discovered issues with Windows Ethernet drivers and protocol stacks whereby packets can arrive out of order and which can prevent perfect delivery of data on certain systems. This issue is being worked...
by WA0VY
Mon Aug 07, 2017 7:44 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: 8000DLE serial number label
Replies: 6
Views: 385

Re: 8000DLE serial number label

I think its pretty much a universal problem, at least on the early production units. I stuck it to some waxed paper and put it in the box.
by WA0VY
Mon Jul 31, 2017 2:16 pm
Forum: Diversity Operations
Topic: Diversity Operations
Replies: 21
Views: 2197

Re: Diversity Operations

Thanks for the thoughts. It is difference in the magnetic and electric components of a signal that gives me pause on this antenna. All sources of truly annoying interference appear to be electric (power line or similar). I have an 80-10 OCF dipole that is still up in the trees but has been moth-ball...
by WA0VY
Sun Jul 23, 2017 12:59 am
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

For whatever reason, this blog would not allow me to post the last two shots in the previous post, so here they are:

ScrnShot 5.jpg
ScrnShot 5.jpg (496.98 KiB) Viewed 561 times


ScrnShot 6.jpg
ScrnShot 6.jpg (495.24 KiB) Viewed 561 times
by WA0VY
Sun Jul 23, 2017 12:56 am
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

I did not realize that this thread had gone into page 2 when I posted my last response so I did not see Scott’s or your last response before I posted. Sorry to hear that you have the dreaded latency issue. However, if it’s not causing drops or pops, resolution is more a matter of seeking perfection ...
by WA0VY
Sat Jul 22, 2017 9:51 pm
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

Gary, I'm not aware that there any published "benchmarks" showing what others are seeing in LatencyMon (LM). There are published benchmarks associated with Passmark, but that is measuring overall and system sub-component speed performance, which is not the same as latency. As far as where ...
by WA0VY
Tue Jul 18, 2017 2:19 am
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

BREAKING NEWS!!! I did an update to the chipset drivers and achieved a somewhat interesting result. This is a 30 minute-ish LM result with HPSDR, ASI software and Firefox running, all of which usually present a challenging environment. IMG_1175.JPG Not bad. I took this shot with my IPhone. I already...
by WA0VY
Mon Jul 17, 2017 2:00 pm
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

Basically, an i7 would be better for gaming while a Xeon would be better for server applications where you have to move a lot of data at once. There is a lot you can do with an i7 that you can't do with a Xeon. For instance, overclocking is limited (and difficult) with a Xeon and it can't use high s...
by WA0VY
Wed Jul 12, 2017 2:03 am
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

Update: I did some tweaking to the CPU power management settings in the BIOS and found settings yielding a significant improvement in latency with no real downside in terms of CPU temperatures. The settings all involved disabling anything that would reduce the power state of the CPU, even at idle. L...
by WA0VY
Sun Jul 09, 2017 9:49 pm
Forum: Diversity Operations
Topic: Diversity Operations
Replies: 21
Views: 2197

Re: Diversity Operations

Has anyone tried using a rotatable magnetic loop in a coherent beamforming diversity arrangement? I have some RFI sources that I simply cannot find, mostly because they are intermittent and there is only so much help I can expect from my local energy company. My current array is wholly inadequate fo...
by WA0VY
Tue Jul 04, 2017 2:15 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

By "vmm" system do you mean the page file? If you are trying to force swapping from the hard drive to RAM, I can tell you it doesn't work and will not solve an excess page fault issue. Been there, done that. I was only able to solve the page faulting issue by going with an M.2 SSD. With an...
by WA0VY
Mon Jul 03, 2017 3:01 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Geoff, this looks very good. There is always going to be some latency, but as long as you're in the green, you should be virtually stutter free. Great job!!
by WA0VY
Mon Jul 03, 2017 2:38 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Geoff, First, this is the definition of DPC from Wikipedia: "A Deferred Procedure Call (DPC) is a Microsoft Windows operating system mechanism which allows high-priority tasks (e.g. an interrupt handler) to defer required but lower-priority tasks for later execution. This permits device drivers...
by WA0VY
Sun Jul 02, 2017 10:53 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Geoff, a few comments: 1. I still do not know what MB you are using. Can you provide that information please? However, it is unlikely that a bios update will solve the issue. 2. Running LatencyMon (LM) for a short period of time does not give useful data. When I had latency issues, LM would always g...
by WA0VY
Sun Jul 02, 2017 7:08 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Geoff, speaking only about what I see in CPUID, what concerns me is what I'm not seeing. Unless I'm missing something, it looks like you have only one fan and its not identified as a CPU cooling fan. Is that correct? Do you have a CPU cooler? If so please identify the make and model? Is there more t...
by WA0VY
Sat Jul 01, 2017 5:34 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Try using "F2" to get into BIOS. You have an obvious cooling problem almost certainly associated with your CPU cooling system (check connections to MB). The CPU will throttle down under those conditions. Try installing and running CPUID: http://www.cpuid.com/softwares/hwmonitor.html It wil...
by WA0VY
Fri Jun 30, 2017 4:48 pm
Forum: PowerSDR mRX
Topic: Receive Stutter
Replies: 24
Views: 2464

Re: Receive Stutter

Geoff, could you download and run LatencyMon and share the results? That should identify potential driver and process issues causing latency and/or page faults which are usually at the heart of the problem. Also, see my recent posts in the LatencyMon Benchmarks thread. You will see some good and bad...
by WA0VY
Wed Jun 28, 2017 12:15 am
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

Rob, that looks pretty darn good to me. I assume you have no issues with pops and drops. Now, let me show you a bit of history which might make you feel very good about your setup and help explain why I decided to do my latest build. This is a screenshot of LatencyMon sometime after my 2016 build us...
by WA0VY
Sat Jun 24, 2017 5:41 pm
Forum: PC's & Homebrew Hardware
Topic: LatencyMon Benchmarks
Replies: 32
Views: 3084

Re: LatencyMon Benchmarks

I don't want to publish that until I see if I can fix my 2D problem. Needless to say, its nothing to brag about. Also, I'm not sure that a 2D benchmark is relevant anymore. Other modern benchmark software ignores it. Scott (and others), check this one out: https://benchmark.unigine.com/superposition...

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