In order to test the filter I got via ebay, I just connected it outdoors, not really the best thing to do.
Today I went to the local "elektronica-boer" and got some connector adapters making it possible to move the filter indoors. I had to retain the filter before the extra indoor amplifier in order to avoid IMD problems, so a bit of extra adapters were necessary.
One day I will have to make a web page describing the whole thing, but that is for later.
Busy day tomorrow with non-radio stuff, so hope to get a bit more done today.
Notice: Upcoming HAARP ionospheric tests from Alaska - 17th to 22nd Nov 2025
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The *High-frequency Active Auroral Research Program* (HAARP) is based in
Alaska and it's a high-power, high frequency (HF) transmitter for studying
the i...
4 hours ago
That webpage would be a good one to have ;-)
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