bytebender
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That seems to be the trend lately. What price would you be looking at?
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I prefer passive over active antenna to reduce failure points and simplify installation. An active loop will also amplify noise in the neighborhood and there is plenty of noise around my location. I have my 303WA-2 mounted on a 6-foot metal pole whi…
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Thanks for the continuous updates. The kiwi2 has been my most used sdr for the HF bands. The hardware is reliable and the software and services makes it the most useable.
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You can also try this passive vertical: ApexRadio 303WA-2. I had a coax and wire version of the wellbrook that I compared it to and from my location, there was no perceptible difference in listenable signals even though the SNR on the loops were muc…
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I was able to decode 13810 CNR 7,000+ miles away using a cheap random length loop on ground antenna in front of my urban yard in the San Francisco Bay Area. More broadcasters should use DRM. It is impressive on the shortwave bands.
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This one did the job: https://www.minicircuits.com/pdfs/BLP-27+.pdf
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Here is an active GPS antenna rubber ducky that would need zero cables and screws right into the SMA port: https://www.2j-antennas.com/antennas/single-external-antennas/2j0801cf-c40g-a38g-gps-glonass-beidou-galileo-28-db-gain-right-angle-antenna/283…
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I have one on order. I do rather have zero phantom signals than a slight rolloff at 10M.
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This one has a sharper cutoff and a 45 dB rejection at 41 MHz but the rolloff starts around the 10M band. https://www.minicircuits.com/pdfs/BLP-27+.pdf
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I picked up a Mini Circuits BLP-30+ filter to test. It does knock down the CHP signals quite a bit but not completely.
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What kind of GPS reception should we aim for in the kiwi 2? For example, at least 4 green channels?
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That is certainly impressive and meticulous. The SDR rabbit hole is almost endless.
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That's an interesting circuit that I might try if an off the shelf filter is not good enough. I'm on the east side of the San Francisco Bay, California, USA. These are highway patrol dispatch signals that have a large geographic reach that is compar…
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Thanks for the measurements. I tried a mag loop and the signal peaked at S9+ 10 so that didn't help. I'll probably try a low pass filter with a cutoff at 30 or 32 MHz and might need to connect a couple of them in series.
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https://forum.kiwisdr.com/uploads/236/XFRAN8XS8P7R.png Attached is another screenshot. The signal peaks around -80 dB / S7-S8. The actual transmission of this signal is 42.5 MHz and it's appearing on 24.166 MHz on the Kiwi 2. There are several other…