On 9/13/19 6:47 AM, Roger D Johnson wrote:
Frequency was 1825 kHz
Daytime? at 2MHz?
You're totally below the critical frequency, even with no sunspots..
No question you are getting skywave propagation. In fact, low sunspots
helps, because the D-layer absorption is lower, so you can actually get
up to the F layer and back down.
Here's a real timeionogram from Wallops (somewhat farther south)
https://www.ngdc.noaa.gov/stp/IONO/rt-iono/latest/WI937.png
https://www.ngdc.noaa.gov/stp/IONO/rt-iono/latest/WP937.png
As I write this the MUF is about 6 MHz, so your 2MHz skywave is no problem.
I think there's some ionosondes farther north - there's one at Haystack
near Boston, MA, but I can't seem to find the real time data.
On 9/13/2019 9:08 AM, jimlux wrote:
On 9/13/19 3:11 AM, Roger D Johnson wrote:
These test were in late morning to early afternoon.
At what frequency - I think we can assume the SSN is low, low, low..
73, Roger
On 9/12/2019 9:02 PM, Roger D Johnson wrote:
I've been running some tests on my 8 circle array with K1JB. Joe is
17 miles away and I sometimes notice deep fading on his signal.
Makes plotting the
antenna pattern very difficult. Is it possible to have skywave
contamination
at this short range?
73, Roger
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