bytebender

Comments

• 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…

  in W6LVP Amplified Receive-Only Magnetic Loop Antenna / Where to buy in NZ? Comment by bytebender September 19
• 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.

  in v1.700,701 Comment by bytebender September 18
• 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…

  in W6LVP Amplified Receive-Only Magnetic Loop Antenna / Where to buy in NZ? Comment by bytebender September 18
• 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.

  in DRM Heard Comment by bytebender June 27
• This one did the job: https://www.minicircuits.com/pdfs/BLP-27+.pdf

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 23
• 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…

  in GPS antenna comparison Comment by bytebender May 14
• I have one on order. I do rather have zero phantom signals than a slight rolloff at 10M.

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 14
• 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

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 14
• I picked up a Mini Circuits BLP-30+ filter to test. It does knock down the CHP signals quite a bit but not completely.

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 13
• What kind of GPS reception should we aim for in the kiwi 2? For example, at least 4 green channels?

  in GPS antenna comparison Comment by bytebender May 10
• That is certainly impressive and meticulous. The SDR rabbit hole is almost endless.

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 4
• 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…

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 4
• 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.

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 4
• 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…

  in Out of band signals from 39-45 MHz on kiwisdr 2 [fixed with external LPF] Comment by bytebender May 4