heliosh
About
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- heliosh
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Comments
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Well with my present loop, I'm often in the borderline clipping range (>-30 dBm) particularly in the 31m and 25m broadcast bands, while noise levels above 18 MHz don't exceed the kiwis noise floor. It's a trade-off between occasional ADC saturati…
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(Image)
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I'm working on a magnetic loop preamp, but the question was more of general nature. Obviously the noise floor from the preamp has to be higher than the receiver noise floor, in order to improve the overall noise figure, but by how much?
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I could, but the difficult part is not the script, but getting known to rrdtool. It's pointless if you don't understand how rrdtool works. Once you understand how rrdtool works, you're most likely better off with creating your own scripts. There are…
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@Jimo you could try something in bash likeTIMESTAMP=`date '+%F-%H:%M:%S'`RSSI=`python kiwirecorder.py -s www -f 1440 -L -5000 -H 5000 --s-meter 10`echo $TIMESTAMP $RSSI >>logfile.log
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Yes, i made it myself.
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In my case it is actually worse with a 9:1 unun. Apparently it converts high impedance lightning energy to low impedance LED energy :smiley: Could read a newspaper with that LED flashing.
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Haha I've tried it and the LED flashes too at my antenna! Not as hefty as yours though, but the storm is pretty far away. I have an endfed wire, 20m long and 6m above ground.
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Does anyone know an effective broadband common mode filter for USB? I found that some USB devices produce noise and I was only mildly successful with ferrite chokes.
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If it would have the same support as the current kiwi has, It would be worth $500-$1000 for me, depending on the specs. Honestly, I spend more time on the kiwi than on the $4000 transceiver. BTW, I've paid $360 for my first kiwi. If it had double t…
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My wish-list for a Kiwi MkII would be: Important: - More receiver slots Nice to have: - >=16-Bit ADC - More FFT bins for the spectrum display (1 per pixel) - Faster CPU - Integrated WiFi (or a USB port for a WiFi-Adapter, but USB tends to gene…
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That's understandable. I must say KiwiSDR is one of the best supported products I have ever owned, and also most valuable for that price. Where else do you get new features and bugfixes almost every week? You do an excellent job. Thank you.
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127 is 7-bit, so you could use the extra bit to address values to -255? Since this is the first version of kiwiclient that can report s-meter values, a change maybe wouldn't hurt a lot. But on the other hand, I probably don't understand all consequ…
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One thing that i noticed: It does never show power levels below -127.0 dBm, for example with narrow filters. But it's the same for the web interface, so it probably isn't a problem of kiwirecorder. The s_meter extension on the other hand does show …
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You're awesome! Thanks a lot!
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Single reading would be ok. Ideal would be a single reading of the average of a few seconds.
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Hi Mike What kind of antenna are you using and how is it connected? Is your receiver accessible from the internet so we can have a look?
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Yes, 5.2-8.5 MHz and 14.1-17.7 MHz are downstream bands of VDSL. Upsteam bands in between are also partially visible. I had the same problem and the authorities found a broken overhead line. After they fixed it, the noise was gone.
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Sorry to hijack this thread; is it possible to have more bins in the waterfall diagram for high resolution displays?
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Hi, Is it safe to update the linux kernel? https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Kernel_Upgrade