GitHub - studentkra/HMC253: Antenna switch HMC253 and ESP8266
https://github.com/studentkra/HMC253Antenna switch HMC253 and ESP8266. Contribute to studentkra/HMC253 development by creating an account on GitHub.
Best Recent Content
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Trying to understand this noise
Don't buy the Bonito loop.
Have a look at the Loop Antennas IO group.
https://groups.io/g/loopantennas
You will find some familiar names on there, and one or two, are offering ready built loop amplifier PCB's based on Wellbrook and LZ1AQ's designs.
My personal favourites are versions of the LZ1AQ loop amplifier. But for a bit more money, you could buy a much more versatile ready built LZ1AQ active antenna amplifier, that facilitates both switched active loop and dipole modes. This is highly effective and still costs a fraction of the Bonito (which is based around a cheap video amplifier chip).
Chavdar's other webpages are a goldmine of information and highly recommended too.
https://www.lz1aq.signacor.com/docs/lz1aq-topical-article-index.php
I hope this provides some alternative options.
Martin
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Real Time SWBC Shortwave Broadcast Station Schedule
There's absolutely no need for individual Kiwi's to be downloading from there when it needs to be compiled into a compact binary form as part of a release. The list is huge and fetching it off the filesystem of the Kiwi would break the Kiwi realtime restrictions (i.e. audio failures).
I improved my own Makefile so there's less manual work to update the list.
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Antenna switch | Kits | Commercially available?
My project of HMC253 and ESP8266 antenna switch on Github.
Not tested yet ))
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OT: Time Signals for clocks - MSF
That README page is slightly confusing because the picture of the air-core coil and first schematic appear adjacent to each other. The two schematics refer to the second picture which shows an "AM loopstick" style ferrite coil which could easily be 700 uH I would imagine.
Brings back memories of when I ran a LOWFER beacon on 175 kHz back in the early '80s. 1W input using an IRF510. And an output coil wound on a 200x500 mm coil form using Litz wire. Heard all over the western US. Was it really that long ago? Am I really that old? What happened!
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OT: Time Signals for clocks - MSF
Nice. Well, it's all about the field strength. Very likely you can build something useful that will not be detectable outside of your immediate location.
And, you can use your Kiwi to test it -- the timecode extension!
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Default KiwiSDR DX.json Download
I just replied to your email before I saw this post. So I'll include my email reply here:
So it turns out the default dx.json is stored on every Kiwi in case it turns up missing during a software install. If you bring up the admin console try these commands to see the differences:
cdk
wc ../KiwiSDR/unix_env/kiwi.config/dist.dx.json dx.json
In my case it showed dx.json had a few new lines not present in the default file.
You can replace the "wc" (word count) with a "cp" to copy the default file to the current dx.json. You can use "diff" to see the actual text differences.
You should immediately restart (admin control tab) so the server doesn't overwrite the dx.json file you just restored.
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New product accessories in our store: SDR protection circuit, MW filter
SMG I do use the 630m band here in NZ
Net on thursdays @ 8:30 pm and I use my kiwi with the am filter for recieve. presently I do not transmit as I cannot load the extended double zepp for 80m 0n 160 or 630m a new 390m doublet is about to go up and I'll be present on those bands on TX
73 ZL2J
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URL string commands
Looks like it was a browser issue.
Clearing cookies resolved it.
Thanks,
Martin
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Register Kiwi SDR online
"Many thanks, there seems to be so much to look at with so many tabs on the admin page."
There are so many user cases that it's difficult to cater for everyone. But the more you use your KiWi, the more thankful you will become that a specific feature has been included in the admin setup.
I run several different types of web sdr, and the KiWi is the one that has incorporated the most useful features and suggestions from users and admins alike.
Many other developers will simply ignore such requests, because they personally don't understand the requirement, or simply focus on the software, rather than the needs of the users.
Some other web sdr's, require you to be a Linux guru before you can get up and running, so the KiWi is pretty much "plug and play" in comparison.
Regards,
Martin
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Register Kiwi SDR online
Well, the complexity is a result of people asking for features over the years. That's the trade-off. I try and limit it as much as I can. It's a thankless task, as some people are always unhappy..
