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LacekHUN
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- LacekHUN
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@studentkra many many thanks, now working :)
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I think, the problem is at the updated frontend of the Kiwi, not with your script.
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So. I spent a lot of time (and coax) to trying different setups. Now: The 1st gnd point is directly on the PCB GND pin. 3,5m from here there are two chokes: 19 turns of RG174 on FT140-77 toroid and 13 turns of RG59 on FT240-31 toroid. Noise almost g…
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many thanks for these answers... So there is a new question..
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I finished with the tests with the following relsults: Connecting the GND BEFORE the chokes (on the RX side at the bottom of the pole) = almost clear SW bands but S10 noise on LW+MW. Connecting the GND AFTER the cokes (on the ANT side at the bottom …
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Thanks for this answer. So maybe I helping someone to investigate war crimes? I'll tolerate it :)
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My method: Add a MIX31 or MIX77 toroid to the wire goes to the Kiwi from the PSU with many turns as you can, and ground the chasis of the PSU. I bought LED power supply, similar like this: https://www.amazon.com/Switching-Universal-Regulated-Transf…
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Thanks for these infos, now everything is more clear :) Now the Choke is ~ 25m away from the MiniWhip PCB (and the GND) and I have noise/gain peak on 12 MHZ = 25 meterband and 6 MHz = 50 mb, 4000 khz = 75 mb, etc. Now the only question is... What is…
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Thanks the method on the picture worked perfectly when I had the miniwhip at the weekend house's back-garden :) It was on 5m long wooden pole and GND point+choke near the ground level. So... For an example MiniWhip +4m the feedline for the "pa…
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no problem with the Kiwi's noise floor :) Just the coax picking up some noise ("they" still on the spectrum when I disconnect the dipole)
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Thanks the quick fix, now works like a charm!
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Thanks, the public problem is solved :) The 8 channels error is after 10-20 minutes of operation. I observed this since my post. :/
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https://forum.kiwisdr.com/uploads/061/KKRCFA1JSZSX.png
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I not using DDNS anymore, I use DuckDNS since 2 years. But I deleted now everything from the DUC config on the Connect page. The 8 channels error is after 10-20 minutes of operation.
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Martin! Adding another PSU with clear 12v adaptor doesen't helps?
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In the near future I'll add a second choke near the little house.
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I added grounding to the coax feed on halfway plus a common mode choke from 10m coax near the antenna. The S9 noise reduced to S6 and the LW band became almost clear :)
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jks: without the notch HGA22 is overloading the full stuff. n6gn: the noise is from the power line, probably caused by a failed pole somewhere? Not sure, but I need to protect the antenna against any noise :)
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n6gn: here is the noise on the WF:
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But it's a good temporary solution.
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Works great!!! :)https://youtu.be/0mkdU3bRic0
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Here is the Windows version with the AAC decoder: http://www86.zippyshare.com/v/qmz8NhI8/file.html(Just copied fromSoDiRa software) Unfortunetaly I missed the romanian DRM broadcast. :( What is the next for EU?
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You can note, there is also some intermod in my SDR. It is from my antenna amp, I must accept some compromise (No place for passive antenna and the high power tx's near me). The amp is from BF998 and BFG591.
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Where you can buy variable caps in that big pF range? In the local electrical store, there is only 10-100 pF... Now I partially solved the problem (Thanks to Martin!). For 540 kHz 22uH+3.9 nF plus 560 pF capacitors (Two from this combo) For 135 kH…
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Yes, Martin's stuff looks good. But I need a DEEP and narrow notch for 540 khz. -10 dB att. is not enough for the S9+60+++ signal, I think.
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The narrow notch filter is the option for me - LW and MW is very good here, with a dozens of stations at night.