Search found 201 matches

by DanubeBCL
Tue Apr 09, 2019 4:31 pm
Forum: SDRuno
Topic: api_Service not Responding. What To Do, Please ?
Replies: 10
Views: 1405

Re: api_Service not Responding. What To Do, Please ?

Still no avail with SDRuno V 1.31.
"Device cannot be initialised (sdrplay_api_Fail)."
The service is running. I tried to stop and restart it repeatedly. But no avail.
It seems that I have to quit using SDRPlay RSP1 on a Microsoft Surface 2 tablet. :cry:

73s, Heinrich
by DanubeBCL
Fri Apr 05, 2019 11:06 am
Forum: General
Topic: For Any HDSDR Users
Replies: 5
Views: 421

Re: For Any HDSDR Users

It seems that you have "AFC" on. AFC tries to follow the carrier of an AM signal. When the carrier fades the AFC sometimes snaps to the closest frequencies of the modulated audio spectrum. Then the frequency jumps back and forth between audio frequencies until the carrier in the middle is ...
by DanubeBCL
Thu Mar 28, 2019 4:11 pm
Forum: SDRuno
Topic: api_Service not Responding. What To Do, Please ?
Replies: 10
Views: 1405

Re: api_Service not Responding. What To Do, Please ?

I in the meantime I have exactly the same problem on an MS Surface tablet (Windows 10-64). The SDRPlay API service is running, but the error message persists. Multiple stopping and restarting of the service does not help. There are no "rests" of previous installations, because SDRuno 1.3 w...
by DanubeBCL
Sat Feb 16, 2019 8:06 am
Forum: SDR Antennas
Topic: RA0SMS vs PA0RDT Active Mini Whip - RA0SMS is Very Noisy - Why?
Replies: 21
Views: 3798

Re: RA0SMS vs PA0RDT Active Mini Whip - RA0SMS is Very Noisy - Why?

So if you put it on metal pole the pole acts as an common-mode-choke and the "antenna" stops working. That's not true. Active monopoles work fine both on top of metal masts and non-conductive masts. because the coax cable is part of the antenna. This is true. That's why an active monopole...
by DanubeBCL
Wed Jan 30, 2019 8:00 am
Forum: SDR Antennas
Topic: Intefearance reducing/anti jamming antenna
Replies: 4
Views: 1081

Re: Intefearance reducing/anti jamming antenna

I use two antennas, one is a loop the other is a wire for picking up noise. The signals from both are combined in a control unit in the shack and the amplitude and phase are adjusted to null out the noise. That's the only way to get rid of at least partly the RF noise polluting our environments tod...
by DanubeBCL
Sat Jan 26, 2019 4:31 pm
Forum: General
Topic: Chinese copies now on eBay?
Replies: 5
Views: 2939

Re: Chinese copies now on eBay?

Funny:
The Chinese text says 100 kHz-2 GHz.
The English text below: 1 KHZ-2GHZ.
The label on the box: 10 kHz-2GHz
They don't know themselves what they sell.
What should "FE" be? (SDR-FE-PLAY). Far East Play? :lol:
More precise: An RTL-SDR(!) Far East Receiver. :roll:

73, Heinrich
by DanubeBCL
Fri Nov 09, 2018 4:33 pm
Forum: SDRplay related
Topic: Bias-t voltage
Replies: 5
Views: 2258

Re: Bias-t voltage

PD1ET wrote:A voltage of 9 to 12 v would be more usefull...
And certainly more difficult and costly to be generated from a 5 V USB voltage.
73, Heinrich
by DanubeBCL
Fri Nov 02, 2018 11:36 am
Forum: SDRuno
Topic: SAM MODE "ANOMALY"
Replies: 4
Views: 2120

Re: SAM MODE "ANOMALY"

Shannon Volmet uses USB. This mode has no carrier which Sync AM could lock to. When you use SAM for SSB transmissions the detector will lock to any strong peak in the modulation spectrum close to the nominal frequency at random. This results in an unstable audio pitch. SAM is meant for AM transmissi...
by DanubeBCL
Wed Sep 05, 2018 2:44 pm
Forum: SDRplay related
Topic: Beam steering and noise cancelling possible with RSPduo?
Replies: 7
Views: 3882

Re: Beam steering and noise cancelling possible with RSPduo?

I'm very much hoping this is possible soon Me, too. But development goes slowly. Simon Brown announced several months a go he was planning to introduce noise cancelling/phasing by diversity in SDRConsole. But nothing happened so far. These people live in an exclusive environment, they do not know w...
by DanubeBCL
Fri Aug 03, 2018 7:49 am
Forum: SDR Antennas
Topic: Mains noise
Replies: 13
Views: 9515

Re: Mains noise

The standard situation is type a) (noise radiated from mains wires in the houses that surround you). You can do nothing against that type of noise, because... ... the neighbours do not understand why they are the jammers. You cannot persuade them to switch off the noise sources or use line filtering...

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