WA2ZKD
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- WA2ZKD
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Comments
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did you try running catsync in wine?
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look at the --help on kiwirecorder.py
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http://forum.kiwisdr.com/discussion/1517/diy-downconverter#latest
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It also runs on Odroid with Ubuntu
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what devices are connected to the router and where are they located?
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Use of the small shortwave portable radio is always a quick way to zero in
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I have an old trusty Sony ICF7600G that I can walk around with and sniff out potential noise sources.
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https://www.ebay.com/i/113664791414?chn=ps https://www.ebay.com/itm/ADF4001-RF-module-200MHZ-phase-detector-Frequency-synthesizer/272564042804?hash=item3f76153c34:g:fbsAAOSw32lYrA47
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Click on the square green icon with arrow near the frequency is
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https://www.ebay.com/itm/New-SMA-connector-band-pass-bandpass-filter-BPF-118-136MHz-for-Air-band/123134437372?hash=item1cab6267fc:g:XHAAAOSwxQha-rQG&redirect=mobile
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where on your property to you have the puck located
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If you can go through the tedium of installing gnuradio and gr-kiwisdr there's a tool that allows you to measure the magnitude of signals and their SNR. It is helpful. As is walking around your house with something like a Sony ICF7600 of equiv.
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'crow.... I think you mean downconverter.
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you might mention a freq./signal you tried
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Chris... things like kiwirecorder.py and gr-kiwisdr can do some of this stuff
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that was implemented when there was snow on the ground.... more to follow!
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it can be hard to quantify but my wspr ranking (number of uniqs) went up several spots since implementating that 2nd ferrite scheme
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I used a +40 dB unit to overcome feedline loss and eliminate need for active splitter. Instock wireless (link above) has bias tees.
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that's a little tricky because you have to consider the sum of all the big signals in the HF range, not just what you see. I use S9+40 dBm as my goal when filtering, notching or nulling the biggies.
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Time-Pi is a Pi with an Adafruit GPS board that has been setup to provide a local ntpd with PPS Stratum 1 accuracy. Even if I lose the external network, all time is very accurate.
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If you want LW and MW, be conscious of the low end cutoff on any scheme you use
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IIRC, the wspr time comes from the kiwi's internet time.... and of course has a fair amount decode freq tolerance, given its wide decode window
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These guys have reasonably priced passive splitters https://www.instockwireless.com/gps-splitter-4way-type-N-gps400.htm#
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The "black blobs" are 31 Mix Ferrite cores. Something like these https://www.digikey.com.au/product-detail/en/fair-rite-products-corp/0431173951/1934-1429-ND/8593999 75 Mix is good but harder to find and more $
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I use one of these.... https://www.minicircuits.com/WebStore/dashboard.html?model=ZSC-3-2+
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receive WWV on 2 time stamped IQ files and look at alignment (?). I know you have WWV on GW so no skywave effects!
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The spliiter is a passive one, the DC applied gos to bias the GPS unit, which is this case is a +40 dB gain unit. https://www.ebay.com/p/PCTEL-GPSL1TMGSPI40NCB-Antenna-Kit-GPS-L1-Surge-Medium-Duty-Mount/2006284562?iid=123183788371&chn=ps more i…
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jimlill.com has 8073, 8074, 8075 ports
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I am less concerned about absolute accuracy than the relative accuracy between 3 kiwi
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The lack of phoro height was the issue, thanks