I ran Dream and Sodira in parallel using VAC and tried a few DRM stations.
Sodira only locked and produced audio for about 10% of the time Dream worked OK. In turn Dream would typically only stay locked for periods of up to 2 minutes or so and t…
I have just updated my KiWi with antenna switch to V1.141and it works OK.
Just a thought - have you upgraded to the most recent version of switch extension ?
The latest version h…
Today I experimented passing the IQ stream to SDR Sharp, HDSDR & SDR Console using their soundcard IQ input options.
Set the applications to 0Hz and tune with the KiWi browser
It works quite well and I can now use some of the features…
Thanks for the update, I haven't installed it yet but I had managed to figure out that the IQ entry in the dx.json file was the problem and had edited it out to get things back up again.
I tried it this afternoon with Dream and it works ver…
I took a quick look at your KiWi SDR and something does not seem right.
If you are using the Welbrook ALA 1530 I would have expected it to show much higher signal levels on the Medium and Long wave broadcast bands (despite the other noise)…
Yes that's definitely broadband-over-powerline (BPL) interference, the notches in the noise spectrum on the amateur bands is the big clue.
Unfortunately these sort of devices are the scourge of amateur radio operators in the UK, as even though i…
1. On the S-Meter, even with a low signal report, I get the "OV" light up, is this normal, and should I worry about it?It indicates ADC overload, if you look on the spectrum display you may find some broadcast signals are above the -30dB l…
I'd agree, I think a password override would be the more useful methodology.
Just a thought - I wonder if some sort of individual 'subscriber' key could be issued and stored as a cookie so that you could give different privileges to different types …
If you are just having problems with background noise rather than actual interference, you may find it worthwhile experimenting with different receive bandwidths and AGC settings.
Adjusting the AGC threshold away from its default value (in the e…
BTW if you have back to back input protection diodes connected across the amplifier input (as I show in the diagram) you may find they add to your IMD. I've had to connect them in series across the supply rail so that they are …
Ah OK I see what you are doing, I had wondered about the increase in noise around 30MHz - I do the same but I was keeping it to myself as my secret weapon :-)
What's the GP antenna - that's really good on the NDB band.
Keep up the good…
I just had a play with your SDR and its's very good - looks like I now have some serious competition :-)
Just as a matter of interest, what size whip are you using with the active antenna ? It's working quite well but I'm a bit surprised…
Something like this next suggestion has been discussed before
But here is a new variation on my previous thoughts. Please note that this would require some backend / web work as well as ad…
Not being fluent in Linux commands, I use WinSCP https://winscp.net/eng/download.php to move stuff around to and from my windows machine and keep backups of my customised files etc.
It's also possible to open and edit files still residing on th…
I think that's easy to fix. Just get the Admin to set the SDR security password protection to a suitable number of private receivers (0-4) as required.
The timeout can also be disabled so that the SDR browser session keeps running when being us…
Mauritz - if you look at the LZ1AQ control interface shown on page 13 of this document http://active-antenna.eu/tech-docs/2_ActiveAA_Mount_21.pdf
You will see that the required control signals are even simpler than you may think at first glace.…
I wouldn't bother editing the code.
The solution is quite simple.
Build a normal transistor interface for each of the eight GPIO pins.
Then use a matrix of diodes to form a simple logic routing system.
This is how I have done it:-
Thanks for the links - unfortunately I had seen those pages previously.
The answer is hidden somewhere among all the ITU RR documents.
Try searching for
"1606.5 kHz (1605 kHz Region 2) and 4000 kHz"
" RR Appendix 17 and Appen…
I think the 6MHz Pirates tend to use LSB so that the legitimate commercial / military stations (who often only have USB) can't easily tell what they are saying.
Russian CB'ers a mainly using AM from very old / surplus ex military equipment,…
They are French pseudo CB'ers / 'Freebanders' / Echo Charlie operators.
There are unlicensed operators from loads of different countries using that segment of the spectrum. 6660.00KHz LSB is typically used as a calling channel.
Sorry folks but I still use the SND button and generally leave it on white when using the SDR on a local connection, as I find the remaining mild amount of audio stuttering when zooming etc. to be more annoying than any improvement in audio …
I don't think you will have zapped the Ethernet port, they are quite robust.
Sometimes I find I have to wait a while for the Ethernet port to spring into life after a power cycle - maybe 5 mins or even longer if I have reloaded the software…