Search found 190 matches

by DanubeBCL
Sat Dec 24, 2016 1:10 pm
Forum: General
Topic: SAQ Christmas Transmission with RSP1
Replies: 2
Views: 1985

Re: SAQ Christmas Transmission with RSP1

You also have these strange signals around 16 kHz and 18 kHz, Wolfgang. I have already suspected toys from my neighbours. But they seem to be "real" as you have them, too. That on 18 kHz seems to be weaker at your location. Maybe there are similar electronics in households near you. Don't ...
by DanubeBCL
Fri Dec 23, 2016 5:14 pm
Forum: New Users' experiences
Topic: High noise floor on RSP2??
Replies: 5
Views: 3798

Re: High noise floor on RSP2??

If I understood it right the noise level rises when any kind of antenna is connected: Bonito MiniWhip or simple random wire. Then I should say the noise level in and around your house is high. a) Are the antennas far away enough from PCs and monitors? b) Does the receiver have a good ground connecti...
by DanubeBCL
Fri Dec 23, 2016 4:40 pm
Forum: SDRuno
Topic: SDRunoExtIO no longer starts
Replies: 15
Views: 5830

Re: SDRunoExtIO no longer starts

After several trials and errors I found out the follwowing: SDRuno 1.12 copies a WRPnfdc.dll dated 02/12/2016 13:46. SDRunoExtIO does NOT start with this dll. SDRuno uses a WRPnfdc.dll dated 24/10/2016 18:33. SDRunoExtIO starts OK with this dll. When I copy this old dll to the new 1.12 installation ...
by DanubeBCL
Fri Dec 23, 2016 4:28 pm
Forum: SDRuno
Topic: SDRunoExtIO no longer starts
Replies: 15
Views: 5830

SDRunoExtIO no longer starts

After installing SDRuno 1.12 I cannot start SDRunoExtIO any more. The programme terminates before anything is shown.
No problem when I go back to 1.11.
Has anyone got a similar problem? What could I have messed up?
73, Heinrich
by DanubeBCL
Tue Dec 20, 2016 10:49 am
Forum: SDRuno
Topic: Antenna Referred Power Measurement.
Replies: 9
Views: 4575

Re: Antenna Referred Power Measurement.

To David, to avoid being off topic too much I try a short answer: In Europe the powerline modems (PLT, PLC, dLAN, powerLAN etc.) have been generously allowed at high noise levels due to intensive "work" of the industry lobbyists at the European Parliament, using up to 105 dBµV broadband po...
by DanubeBCL
Mon Dec 19, 2016 5:21 pm
Forum: General
Topic: Continuing Difficulties trying to run SDRUno with HRD
Replies: 2
Views: 4248

Re: Continuing Difficulties trying to run SDRUno with HRD

HDSDR and HRD communicate with each other: HDSDR has a built in customized DDE data exchange interface which is understood by HRD and vice versa. You do not need Omnirig for this at all. HRD controls the FT-857 through COM port 5 and HRD controls HDSDR by DDE (and vice versa). SDRuno does not have t...
by DanubeBCL
Sat Dec 17, 2016 6:42 pm
Forum: SDRuno
Topic: Antenna Referred Power Measurement.
Replies: 9
Views: 4575

Re: Antenna Referred Power Measurement.

Well David, there are certainly "better" SDRs with higher direct sampling rates and so on, but I have given up to look for new SDR receivers. The ones I own (Perseus, G33DDC, Anan Angelia, apart from the toys like Funcube, RSP1 or RTL dongles) were expensive enough and it makes no sense fo...
by DanubeBCL
Sat Dec 17, 2016 10:55 am
Forum: SDRuno
Topic: Antenna Referred Power Measurement.
Replies: 9
Views: 4575

Re: Antenna Referred Power Measurement.

dBm is a power measurement unit (power in relation to 1 milliwatt). In radios the power normally is calculated from the voltage on the 50 Ohms antenna input. Maybe the "creator" of this expression wanted to express all this in one term. But I also think the expression is not very meaningfu...
by DanubeBCL
Tue Dec 13, 2016 10:11 am
Forum: SDRuno
Topic: SDRUno RSP1 NB doesn't do much
Replies: 6
Views: 6421

Re: SDRUno RSP1 NB doesn't do much

Generally, digital noise reducers are best used sparingly That's correct. There are several people (I am one of them) who can read voice under strong hiss better when noise reduction is off. The NR takes away too much of the frequencies needed in our brain to discriminate the syllables. NRs are pre...
by DanubeBCL
Mon Dec 12, 2016 5:49 pm
Forum: SDRuno
Topic: SDRUno RSP1 NB doesn't do much
Replies: 6
Views: 6421

Re: SDRUno RSP1 NB doesn't do much

Trying to pick out weak signals from the noise, I found that the NB (noise blanker) does very little to nothing. Do not confuse noise blanker and (dynamic) noise reduction. Noise blankers are made for pulse shaped noise (like those ignition sparks of very old cars or electric pasture fences or simi...

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