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Suitable SDR hardware for HFDL
Thinking about receiving HFDL and wondered if anyone could recommend suitable a receiver, as I understand it I need to monitor several HF frequencies over a range from 4MHz upwards at the same time.
I was looking at the Airspy HF+ but was told the bandwidth for that device was less than 1MHz, would the SRD Play series be any better? or a low cast dongle and an upconverter. Ideally the device would be compatible with SDR Console. As this is the only HF interest I have I don't want anything too expensive, say less than £200 ($250-300) Thanks, Paul |
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Re: Test my Server
G3TDJ
All four receivers tested, though multiple changes Simon...all OK
Andy G3TDJ North Devon |
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Re: Test my Server
Ron Liekens
Simon,
I checked all the receivers and found nothing wrong. 73' Ron ON2RON |
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Re: Test my Server
Cjay
Your RSP1A working fine.
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Re: Test my Server
Mark Turner <ei3kd@...>
I'm connected to your Airspy HF+, although I don't see any signal, no noise, nothing... Will leave it for a while if it helps. Regards, Mark On 12/11/2018 08:41, Simon Brown wrote:
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Re: All servers have stopped operation yesterday on my PC
Henry
On Sun, Nov 11, 2018 at 08:09 PM, Simon Brown wrote:
Hi, it's the only thing that I found having changed on my PC the day before yesterday. DWORD timeGetTime(); became negative. It was my only explanation for the failure. Nothing else has changed on my PC to my knowledge. No waterfall etc. indicates a Firewall is using an ethernet radio. What radios do you have?Before the failure I had Elad S2, Perseus, Funcube pro+ and RTL (dongle USB) running. After the complete new installation with registry and files clearing first I had added NO radio at all. No success with connecting to servers. The connection is established, but no sound and waterfall afterwards from ANY server. Then I only set up a Funcube dongle as a local radio. Still no success with servers. The Funcube dongle itself runs fine. What do you mean by "ethernet radio"? I am not aware that I have running such a thing. Neither before the failure nor after. And why does SDRConsole hang in an endless loop now when I stop the connectrion to a server? Shouldn't there be a timeout message when a firewall is all of a sudden involved? 73s, Henry |
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Re: Test my Server
Ken Alexander
I have not the foggiest idea how or where to use that information, although I'd like to try and help. Wait, OK, I see a Server tab in the Select Radio popup window. Do I add this information in there. If so, how? There's no Add button like there is when you select a radio definition. Any help would be appreciated. Thanks, Ken VE3HLS On Mon, Nov 12, 2018 at 3:41 PM Simon Brown <simon@...> wrote:
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Test my Server
Hi All,
I’m trying to find an annoying bug with the server logic. Please run my server, even if just for a few minutes.
G4ELI’s Server IP: 81.174.138.141 Port: 50102 Username: User, Password: PheasantPlucker
Thanks.
Simon Brown, G4ELI
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For Sale Airspy HF+
Jerry <jreed007@...>
I have a like new Airspy HF+ with the
box and the USB cable that came with it. I am asking $150.00 shipped
and insured to US. It works great with SDR Console, just failed to
notice the coverage skipped over the 6M band and the 6M band is
important to me. I would like a Postal Money Order or a Cashiers Check
on B 0f A. If you need additional info drop me an Email. Jerry
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Re: All servers have stopped operation yesterday on my PC
“system time counter has overflown 2147483647 to a negative DWORD”
What’s this?
No waterfall etc. indicates a Firewall is using an ethernet radio. What radios do you have?
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Henry via Groups.Io
Hello all, |
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Re: Satellite Status Orbit number
All clear Simon. Thanks your input. 73 Albert
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Re: All servers have stopped operation yesterday on my PC
Henry
PS: Here is the log of the latest session.
73, Henry |
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All servers have stopped operation yesterday on my PC
Henry
Hello all,
there were no problems at all using servers in SDRConsole 3.0.3 since yesterday around noon. In the afternoon then all servers did connect, but afterwards there was no waterfall, no sound. When I stopped the connection, SDRConsole3 hung in an endless loop and had to be shut down by force. This has not changed today after re-starting the PC. I tried this: 1. Delete all Registry settings for SDRConsole3. 2. Delete the SDRConsole3 folder in Appdata/Roaming. 3. Uninstall and reinstall SDRConsole. No success! No sound and waterfalls from servers. Closing SDRConsole or stopping a connection makes the app hang. I was torturing my brain what could have happened yesterday noon with my PC. I also checked firewall settings, of course. Then I found out that around yesterday noon my system time counter has overflown 2147483647 to a negative DWORD. Silly question: Could this be the reason for SDRConsole stop working with servers? Is there a loop using the DWORD system timer? If not, what else could I investigate to bring the servers back? 73, Henry |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
paolomassalin@...
I understand you :-) I had to choose that Meanwell 35W module to power the QTH PC because it has Fosc of 110 kHz so it doesn't mess up on VLF, I had a 60W brick but it worked on 26 kHz and swamped out from 20 to 80 kHz.
The most annoyance here is from a broadcast MW transmitter sited near the coast, interfering with anything placed more than two floors off the ground. On a QTH that high I can't use anything active outside (i.e. miniwhip) for HF since that signal intermodulates every carrier, I am able to use a miniwhip only for VLF connected to the PC sound card, with good results on 0-96 kHz. I get the most out of the Airspy HF+ with a SA7000 aerial but only disabling AGC and setting attenuator to -36dB, to stop that MW signal from messing up, especially its first harmonic on 1872 kHz, right in 160-metre band. Fortunately it switches off at 12AM until dawn, so wonderful night reception. Good night everyone :-) |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
Stu C <stu@...>
You probably know more than me, I ran the check here as I don't really push this network and was not certain jumbo frames were off (same 1472 as you).
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The only time I have to tune that is at work for a VPN to the far east, that has to be much lower or too much is black-holed en-route. I'll stop posting for today (hears sighs of relief) as I probably should test server-client at home before trying to throw any more mud in the hope it sticks. Here I have a neighbour that used to wipe out HF most of the day, and all night, with his gaming/video rig, I stopped running most SDR's (except the low power Kiwi), currently the neighbours worst kit is up less of the time so I should get a server back on. Stu On 10/11/2018 18:04, paolomassalin@... wrote:
StuC |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
paolomassalin@...
StuC
Performed a ping check on my LAN systems, both local and attic (so with the WDS link in between). Packets get fragmented 1473 bytes up, don't 1472 down. All devices on my LAN are set for jumbo frames disabled and switches for MTU=1518 (should be standard accounting VLAN+QoS when applicable), my knowledge of networks is good but not excellent (but I'm willing to learn :-) ) |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
paolomassalin@...
UPDATE
I tried to uninstall SDRC v3.0.3 from my T470 and replacing it with beta1 from Feb 2018. Stuttering behaviour is totally different. SDRC3.0.3 on SDRS3.0.3: a grinding sound, continuous few-milliseconds audio interrupted by few-milliseconds pauses (every now and then it manages to get some seconds of good audio) SDRCBeta1 on SDRS3.0.3: it goes fine for a few seconds, then starts a sequence of 1-2 seconds audio followed by 1-2 seconds silence, then again fine for 8-10 seconds maybe, then here we go again. Notice that changing the client buffering setting ("V3 Server" button on ribbon) changes the length of the silence interruptions when using Beta1, they become shorter with less buffering and longer with more. Even the attached log is different, instead of only "RESTARTING TIMING" events it is full of "INVALID HEADER" followed by "PURGEALL". I tested only on the RSP2, HF+ behaves similarly but logs differently: lots of "IQ OVER MAX THRESHOLD" but stutters the same as RSP2. So IMHO it is a problem within SDRC-SDRS communication. Tomorrow I hope to go up there in the attic and check locally. |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
Stu C <stu@...>
OK on the power key in the registry, I'd put that in the "keep in view but shouldn't be triggered" box as unless you've changed it rebooted and noticed an affect one way or the other it's not out off the hook (see below *).
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I think you are right about 1803 but not easy to jump to a later just to test this, still good to look at all risk areas as most people who have seen this haven't really come up with lots of tests to narrow it down, you've gathered some useful info. Have you looked at network MTU MSS values or packet sizes as an exercise? Do the old "ping -l 1480 -f remote.address" and reduce the packet size until it is no longer fragmented, try the same from a Console client with and without the issue. If you have a machine that is good on LAN but not WiFi try the same there. We are looking for how small the packets have to be to make the trip on one piece, it might be that you can tune the network link and server/client so that there are less packets chopped on the route. My thinking is that the link is limited by something, might even be network timing once errors cause the buffer to grow too large (another guess). From other links I tried LatencyMon from Resplendence, not sure it would give you anything new here but might be nice to see what slugs the audio most on any laptop. * On mine ACPI was the highest (what!) why would power management be adding the most latency to audio is something I'll have to think about but does make we look back at the power key. On 10/11/2018 16:49, paolomassalin@... wrote:
Right now another thing came to mind. |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
paolomassalin@...
Right now another thing came to mind.
This summer when SDR-Server v3 was finally released, I brought the QTH PC at home and tested operations with server and client connected on Gigabit LAN through the same switch, so no CPE wireless links and no multiple switches in between. The QTH PC was the old i3-4130T machine, so no CPU performance problems. I tested V3 client on my laptop since that's what I usually use to listen to radio. I found out I wasn't able to get past 1 MHz BW without compression and 2 MHz with compression! (NETWORK setting tab on V3 Server panel) It seemed that SDRC-SDRS connection throughput was somewhat limited to 30-35 Mbps. On a wired GIGABIT connection! Shame I didn't check this on my desktop then, now I see it works on any BW setting and is limited by the wireless link throughput, I was able to get 4 MHz on good link conditions, 3 MHz always. On my desktop of course, laptop has gone from limited to 1 MHz to unusable on all BW settings. |
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Re: SDR-Server v3 stuttering on laptop PCs
#sdrconsolev3
#airspyhfplus
#sdrplay
paolomassalin@...
Researched on that registry key. It signals when to put the audio card in sleep mode, which should happen on a laptop to save power, then when a program requests sound the OS wakes up the audio card and that can produce some popping or crackling sounds due to the analog outputs of the audio codec turning on (something like the old "bump" on audio power amplifiers, for which now all of them have delayed relays), but this happens only on the moment device turns on, then it plays just fine until the next sleep command. I experienced this years ago on old laptops.
I checked that registry key, to fix this you have to change the binary value ConservationIdleTime in subkey 0000/PowerSettings. On my Dell laptop it is set to 1E000000 (allow sleep or something like that), on my 7700K desktop it is correctly set to 00000000 (no sleep), surprise! On my Lenovo T470 it is set to 00000000 too. So that's not the culprit. It might have something to do with the Realtek official drivers package I usually install on my systems, but not on the Dell yet, which upon setup sets that value to 0 and prevents sleep. Search goes on... |
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