JIMMY0311

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• https://forum.kiwisdr.com/index.php?p=/discussion/comment/17169#Comment_17169 Hi Steve, I have no idea about others' opinion. For me, the threshold for being willing to operate a Kiwi for free and very well for many years was thought to be much hi…

  in KiwiSDR 2: your expression of interest needed Comment by JIMMY0311 3:02AM
• what a useful fact this is ~~ Apple 20W type-c is regarded to be a low cost but high efficient one, and I'm interested in pitting it against a linear PSU currently in use, for background noise in VLF/MW as comparison. 😀

  in Quiet switch mode power supply (SMPS) for KiwiSDR Comment by JIMMY0311 November 21
• consider yet an active noise canceller like MFJ-1026 or QRM eliminator ?? I have no relevant experience using them ..

  in Improving reception in urban environment Comment by JIMMY0311 November 4
• hi jks Firm order for one v2 with BBG/enclosure here ! 😄 73,

  in KiwiSDR 2: your expression of interest needed Comment by JIMMY0311 November 1
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/16715#Comment_16715 https://forum.kiwisdr.com/uploads/737/8Z6AQOMFB1FN.jpg a photo of my passive antenna for kiwi, it's a 1.7m long passive mini-whip, model no. is apexradio 303WA-2 and it of…

  in Leave your KIWISDR's photo and link URL here please Comment by JIMMY0311 October 2
• https://forum.kiwisdr.com/uploads/390/QBGLEM8J9RJK.jpg http://jjm0311.ddns.net:8073 The picture includes a linear power supply, a pre-BPF, kiwisdR+Aluminum enclosure, and wifi hub. The fan was intendedly moved to the outside to reduce vibration.

  in Leave your KIWISDR's photo and link URL here please Comment by JIMMY0311 September 16
• As I knew regarding one mini-handhe NXP-tef6686 radio project, the initiator still adopted crowdfunding to ensure a limited inventory and smooth distribution (in China). FYI. https://forum.kiwisdr.com/uploads/714/V9ZG0FEXG5R0.jpg

  in KiwiSDR 2 Comment by JIMMY0311 August 19
• I don't have any technical support ability, but I would definitely be the first batch of purchase participants. Btw, will the frequency range of the 2nd version change (FM/PSB/UHF) in your plan?

  in KiwiSDR 2 Comment by JIMMY0311 August 15
• thank two guru's comments  😀 Without the RFI from atmosphere it truly became much "quiet" tonight.

  in You can do nothing about some RFI, such as thunderstorm lightning Comment by JIMMY0311 May 19
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/15617#Comment_15617 Hi Martin, you are correct. The browser that I have ever used with admin to visit would ignore the masked function. This case can be closed. Then, the remaining qu…

  in A masked band segment .. problem ?? Comment by JIMMY0311 March 1
• Eventually my kiwi revives with full hp tonight. Thank for jks & G8JNJ gurus' help. https://forum.kiwisdr.com/uploads/589/WVQ2YT3FUBN5.jpg continue my noise reduction engineering ...

  in What went wrong with my KiwiSDR ? [corrupt kiwi.json file] Comment by JIMMY0311 December 2022
• Hi jks, These command lines are really powerful and work well ! Thanks a lot. https://forum.kiwisdr.com/uploads/431/Y1EK8UGLGP9P.jpg As a record shown below is the ssh msg I see in this issue, and hope it can help someone too in the future. https…

  in What went wrong with my KiwiSDR ? [corrupt kiwi.json file] Comment by JIMMY0311 December 2022
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/15348#Comment_15348 Hi, jks Putty access for log was done. Mail sent and thank for your help in advance. B/R, Jimmy

  in What went wrong with my KiwiSDR ? [corrupt kiwi.json file] Comment by JIMMY0311 December 2022
• Hi Martin, Glad to see you again ~ this is the status : Try clearing your browser cache or try another browser. => Done, both Chrome/Opera (brand-new installed at PC) failed the connection too. Before issue happened, the firmware has been update…

  in What went wrong with my KiwiSDR ? [corrupt kiwi.json file] Comment by JIMMY0311 December 2022
• Hi Marti & WA2ZKD Thanks. An Nd-Fe-B magnet can hold the green ring easily, but not so attractive as that to an iron plate. As both of you told these rings should not work, luckily they were really cheap ones. Well, forget it. There is lot…

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• Hi Martin & WA2ZKD, As suggested, four ferrite rings and a very long DC 5.5/2.1 extension cord (not received yet) are on the way. Plan to check the attenuation for high-order harmonic noises by these first. Then, connecting a large capacitor…

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/15269#Comment_15269 Hi, WA2ZKD My typo. It's MeanWell model no. GST25A05-P1J ( 5V/4A ) FYI & regards, Jimmy

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/15267#Comment_15267 Hi Martin, Thanks for your valuable opinion. It works. 😀 Tested by battery power supply, the result revealed that the interference stripes with a period of 220khz did c…

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• I read an article which said For example, for low-frequency electrodeless lamps, the switching frequency of the rectifier is 220KHz. This frequency is the fundamental frequency of interference, and other inte…

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• https://forum.kiwisdr.com/index.php?p=/discussion/comment/15264#Comment_15264 Hi G8JNJ, Thank for your kind feedback in advance. The advice from kiwisdr.com was taken for my power supply choice: Mingwell GST25A05-P1J 5V 4A type, which was said as…

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022
• b.t.w, the "period" of these interference lines was seen precisely 220khz. hmm... is it an useful hint ?

  in Is this a common-mode interference? Seek for a solution .. Comment by JIMMY0311 November 2022