SM2BYC
About
- Username
- SM2BYC
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Comments
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OK. I thought that the ninth pulse was the only way to indicate master transmitter. However in the chayka chains there are several transmitters with nine pulses. So probably they also use phase coding to identify the master. Despite the limited timi…
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Thanks, looks good. Now I just have to figure out how to identify the master in the Chayka chains. Regards Mauritz / SM2BYC
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Updated to the latest version of the antenna switch extension and now it works again. Martin and John: thanks for your help! Regards Mauritz / SM2BYC
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Hi Martin, I have not yet updated to the most recent version of the antenna switch extension. Will try to update as soon as there are no users connected. Thanks for the step-by-step guide. Regards Mauritz / SM2BYC
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Changing the antenna switch settings on the admin page works. Any change there is reflected on the main screen when the antenna switch extension is in use. When I try to select an antenna, the antenna field only stays green as long as the mouse butt…
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Hi Dietmar, In the update tab, I have marked that Kiwi is rebooted after update. So far the antenna switch has been working after software updates. I think that the Kiwi should not restarted but rebooted when antenna switch extension is in use. Re…
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Hi Martin, yes, PGA-103+ are sensitive devices, I have killed a number of these. For the moment I have the protection diodes connected as on your WEB pages. I also had an idea to connect these to supply rails for lower IMD but could not find any in…
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Hi Martin, the LF-GP is also based on the PGA-103+ amplifier circuit. Currently it has a 6 meters long whip starting 2 meters over ground level. It's located 170 meters from my house to get away from the worst noise around the house.The PGA-103+ am…
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Hi Martin, the whip used over 3 MHz is about 1.5 meters long and about 10 meters above ground level. It produces enough signal to cause overload of the Kiwi, so I have 3 notch filters to attenuate some of the worst BC bands. Over 20 MHz, I have in …
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Martin: thanks for the additional information. I gave up on trying to fix the software and followed your advise using a diode matrix. Only issue so far is that one antenna direction is hidden under the ground all antenna button. The KiwiSDR antenna …
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Martin: Yes it is always possible to solve a software problem with hardware and doing as You suggest is an option. Presently I only have wires soldered to pins 11, 12 and 13 on p8, so I would have preferred a software solution. Modifying the OH1KK …
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Trying to get the OH1KK antenna switch extension installed on my KiwiSDR using GPIO pins to control relays. As far as I can understand the back-end code, it assumes that each antenna is controlled by a separate GPIO pin. In my hardware, I have the a…
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Using receiver usage as a basis for rating will give some information on their performance. The drawback I see is that the results will easily be offset by user and/or administrator behaviour. I could connect to all 4 channels on my Kiwi SDR and lea…
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There is a lot of information about WSPR on the "net" including WSPRNET.ORG The KIWISDR WSPR extension is also a good starting point. Regards Mauritz / SM2BYC
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Yes, should be sufficient to run e.g.1 hour at daytime on the higher bands (up to 20 meters) and 1 hour at night time on the lower bands (down to 160 meters). Regards Mauritz / SM2BYC
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Why not use the WSPR functionality of the KIWI SDR to score different receivers? Much more information can be obtained from WSPR compared to IBP. Regards, Mauritz / SM2BYC
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OK, so this does not indicate a GPS problem, just noisy channels with bit errors.
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Yes, that fixed the issue so now I am back in Sweden. This might also explain why I get a lot of Google advertisements in finnish language...
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My local time is still incorrect. Shows eastern European summer time (Finland) but should be central European summer time (Sweden). This might be a difficult case as I am located only a few hundred meters from the border.