Search found 185 matches

by DanubeBCL
Tue Apr 17, 2018 3:01 pm
Forum: General
Topic: Earthing/grounding of coax outer braid
Replies: 2
Views: 129

Re: Earthing/grounding of coax outer braid

When you have no other choice except tapping the coax cable, there are ground clamps available which seal the cable waterproof after application. They look somewhat like these: https://www.mauritz.de/en/lightning-protection/grounding-clamp-coaxial-cable-diameter-of-7mm-9mm http://www.pcs-electronics...
by DanubeBCL
Sun Mar 18, 2018 10:07 am
Forum: Code Corner
Topic: Question for Heinrich, DanubeBCL
Replies: 1
Views: 339

Re: Question for Heinrich, DanubeBCL

Yes Steve, you can control frequency and mode through DDE (LO and Tune). Contact mt@hdsdr.de for further info. The only thing I know about the HRD implementation is that the server name should be HRD_RADIO_000, the string for posting advise is HRD_CAT, the item for frequency (string in Hz) is HRD_HE...
by DanubeBCL
Sat Mar 10, 2018 3:45 pm
Forum: General
Topic: Spikes
Replies: 2
Views: 503

Re: Spikes

There may be slight difference between individual PC brands, but no computer is completely noise free. Everybody who claims "My PC is noisefree" has not looked close enough. The main sources for PC noise are switched power supplies in the computer itself and its peripheral devices (like mo...
by DanubeBCL
Fri Jan 05, 2018 1:42 pm
Forum: SDRuno
Topic: Possible to get UTC To Show 24 Hr Format
Replies: 6
Views: 1111

Re: Possible to get UTC To Show 24 Hr Format

Depends on your systemwide time format setting. I believe yours is hh:mm:ss AM/PM.
No Problem with localisations which use HH:mm:ss.
utc.jpg
utc.jpg (30.19 KiB) Viewed 1103 times
But nevertheless: UTC should not show AM/PM depending on system localisations. UTC is a 24h format. This should be corrected in SDRuno.
73, Heinrich
by DanubeBCL
Tue Jan 02, 2018 11:05 am
Forum: SDRuno
Topic: SDRUno and Virtual Audio Cable
Replies: 4
Views: 1028

Re: SDRUno and Virtual Audio Cable

I would very much like to decode digital modes Normally using a VAC/VSC should be no problem. But for decoding digimodes a VAC is not always required. You can use the Stereomix option of your soundcard as a recording device. Sometimes one must explicitely activate it in the soundcard settings of th...
by DanubeBCL
Mon Nov 27, 2017 9:08 am
Forum: SDR Antennas
Topic: Why you should avoid RG-58
Replies: 8
Views: 3186

Re: Why you should avoid RG-58

Good shielding of the coax cable is only one small part of the story. In most cases sheat waves on the coax shielding are more evil. The only remedy against this is common mode chokes. In the vicinity of power lines the RF noise (inside and outside of houses) has a strong magnetic component. It indu...
by DanubeBCL
Sat Nov 18, 2017 12:43 pm
Forum: General
Topic: RSP RFI
Replies: 8
Views: 4905

Re: RSP RFI

Hallo Phil, although mains lines of course carry a lot of noise from the neighbouring houses into my own house they are not the problem. 1. The power lines entering my house run through strong RF filters. 2. I use intensive grounding with additional earth rods at multiple places in my antenna instal...
by DanubeBCL
Tue Nov 14, 2017 2:28 pm
Forum: New Users' experiences
Topic: HDSDR2 Waterfall screen noise with RSP2
Replies: 4
Views: 1375

Re: HDSDR2 Waterfall screen noise with RSP2

OK - thanks very much. Is there a way of filtering out some of the screen noise with RSP2? That depends on how the noise comes into your receiver. Some of the countermeasures have already been mentioned. 1. Good grounding of receiver and coaxial cable shield 2. Common mode chokes at the antenna inp...
by DanubeBCL
Mon Nov 13, 2017 12:13 pm
Forum: General
Topic: Question about HDSDR and rsp1 dbfs numbers
Replies: 2
Views: 886

Re: Question about HDSDR and rsp1 dbfs numbers

https://en.wikipedia.org/wiki/DBFS In short: When a signal is 0 dB FS the ADC converter only creates logical "1"s and cannot discriminate the spectrum signals any more. It overloads. The db FS value indicates how "far" a signal is away from the highest possible value the ADC can ...
by DanubeBCL
Sat Oct 28, 2017 5:16 pm
Forum: SDRuno
Topic: SDRuno 1.2 and CSVuserlistbrowser problem
Replies: 7
Views: 1402

Re: SDRuno 1.2 and CSVuserlistbrowser problem

Yes, and also VSPE is working too, of course. In my expierence I have learned to avoid COM port names like CNCB0 or something. They work in SDRunoEXTIO here, but I had problems in SDRuno 1.2 when I tried to reconstruct Henry's problem. But no worry. It's working for Henry now. But I still recommend ...

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