WA2ZKD
About
- Username
- WA2ZKD
- Joined
- Visits
- 16,162
- Last Active
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- Member
- Points
- 13
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TDoA how to interpret the maps
NVIS paths have proven tricky for me.
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AM Overload Solved
Here's the final pix of my notch filter I used to solve the severe AM overload I had. More info on it in a follow up post
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Participation of Kiwis in the TDoA process
a surefire solution at a decent price
https://www.ebay.com/itm/Lucent-GPS-40dB-High-Gain-Timing-Antenna-Lightning-Surge-Protection-Mount-Kit/323346523135?epid=10008077643&hash=item4b48f463ff:g:-yEAAOSwjkdZ81n5&_sacat=0&_nkw=40+gps+antenna&_from=R40&rt=nc&_trksid=m570.l1313&LH_TitleDesc=0
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Propagation Predictions
It seems like VOACAP and its online frontend variants have evolved as a Gold Standard for some. However, during my professional work I find that the answers are not always right with regards to MUF… (more)
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Participation of Kiwis in the TDoA process
It's hard to assess the user as Fremont CA station is the server and could be anyone who pointed it toward me. -
TDoA Info, Hints, and Tips
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TDoA Fails
My professional HF efforts are about 95% NVIS. It is not unusual to have multiple skywave components but also groundwave out 100's of KM. My work involves use of waveforms that accommodate doppler… (more) -
Best Stations for TDoA
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GPS Antenna aiming
There been some discussion about antenna gain and coax loss but perhaps more important is can your antenna "see" the birds. In exploring different antenna types, I learned a few things:- many people … (more)
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Best Stations for TDoA
