WA2ZKD
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New Station in Maine
Fully operational.... new GPS antenna, sdr.hu listed. Should be ready for TDoA
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Ionosonde
If you do a full freq look at the Kiwi WF you can often see the chirp sweep go by. I'd like to be able to pick a chirp TX site by name name, Millstone Hill for example, and knowing it's start time, be abe to ID that sweep that goes by. The highest freq seen would indicate the MUF for it at the Kiwi RX site. -
New Station in Maine
it is now http://rx2.wa2zkd.net and is on sdr.hu as well -
New Station in Maine
It's a Pixel. I had not chosen which loop to ship when I configured the Kiwi here at home. -
New Station in Maine
http://142.0.103.74:8073/ is OTA -
GPS RSSI vs. C/N0 vs. -dBm
Here's data I took using the Spectracom GSG-6 Simulator for L1 sats. This compares Kiwi S/N3327 with a SwiftNav Piksi (no antenna, direct connect via DC Block)
Note that the Kiwi has about 15 dB less margin at low levels
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Suggestion and comments on GPS please [resolved, see list of improvements]
My project for tmrw is to use a Spectracom GSG-6 GPS simulator/generator to map actual signal strength at the Kiwi GPS input to reported RSSI. Report to follow
https://spectracom.com/products-services/gnss-simulation/gpsgnss-simulators?gclid=CjwKCAjw2MTbBRASEiwAdYIpseYAdL4X4Yesk-UGnJ_EYn9Hags3PRNiwBCbjQr8x5DRX_YVIZQ5WxoCTQEQAvD_BwE -
Interesting signal 16115 MHz
ERP the result of antenna gain I'll guess. Rockwell-Collins has a WBHF waveform that goes to 48 KHz. http://www.hfindustry.com/meetings_presentations/presentation_materials/2012_sept_hfia/presentations/RC_WBHF_UK_Trial_2012.pdf -
Any Ideas [AM BCB overload]
I posted some howto in another thread for making AMBC notch filters
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TDoA how to interpret the maps
NVIS paths have proven tricky for me.
