WA2ZKD
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- WA2ZKD
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WSPR results
near-realtime WSPR spot rankings are available here. http://www.wa2zkd.net:8088/
Congrats to the various kiwi owners that have top rankings, KD2OM, OE9GHV, KPH, KA7OEI and others
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DIY downconverter
I am not really interested in > 30 MHz at the moment but since nobody else commented on my idea, I just ordered the stuff above and as time permits, will try it and report
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OpenWebRX [using a transverter/down-converter with the Kiwi]
if the RPi PSU is a switcher, that is the source of the noise
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Public Kiwi, WOW
If I am interpreting the sdr.hu data correctly, there are now 366 KiwiSDR available for public access. That's good news. A few "holes" in the coverage however that if filled would be great for TDoA usage. Alaska for example.
Thanks to all who contribute there resources for public use.
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Spur Reduction
This has been discussed here and on net. Here's a simple way to reduce spurious from your shack going back up the feedline and into the antenna. I used a CATV lightning block and mix-31 ferrites. That point is about mid-point on my feedline to active magnetic loop
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Power issues.
you can delay the load from being applied to the PSU with a simple relay.
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Audio queue depth slowly drops to zero, then resets, causing audio underrun - 8 receiver mode
AI6VN's wsprdaemon.sh code really works well. The #1 wspr reporter in North America as of late, KD2OM, runs 2 8-channel kiwis and cover all 14 bands
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Grove Project
I have the Grove stuff working.... I just installed the latest debian stretch release. Obviously, as it needs stretch, my work so far has been on a bare BBG, not a kiwi -
GPS antenna trick
Ron, look at the Degen/Kaito MS-31 type loop -
How many WSPR decoders can be run without affecting performance?
I would suggest you use Rob's 2nd computer scheme. It was kiwiwspr.sh but now wsprdaemon.sh. It will service all kiwi channels without any issues.
