I stand corrected thankyou.
My brain is still a little distracted by the spectacular Eclipse we viewed.
S.
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Woo hoo! To see the sun’s corona inspires awe. Did you capture noise level measurement at 1090 MHz during the eclipse? I’ve been looking at the diurnal ups and downs wondering what is attributable to solar flux.
I was holding my breath during the one minute of totality trying to decide if i would get my heart restarted to worry about noise levels.
Egypt 2027 will be 6 and a half minutes totality so i will think about it then.
BTW heart seems to have restarted thanks for asking.
Yeah I was wondering about that too. Since the antennas we use have their maximum gain at the horizon, is there a drop off in performance at sunrise and sunset? At sunrise it might be difficult to detect since there’s very little traffic anyway, but at sunset there’s still a lot of traffic so you might be able to detect a drop in traffic.
I know for satellite comms, sun outages are a big factor. Course those earth antennas have very narrow beamwidths and very high gains. So you have complete loss of comms when the sun is behind the satellite.
19.8kHz reminds me of 198kHz - the BBC Radio 4 long wave frequency. There is an old chestnut that submarine commanders not hearing Radio 4 LW for x number of days to assume the UK was destroyed in a nuclear attack and to open their orders.
A story more rooted in fact is that electricity companies transmit a signal on 198kHz alongside Radio 4 to enable peak/off-peak electricity usage by households across the UK. The BBC has wanted to shutdown this transmitter for years, but it still trundles on for a bit longer I believe. UK posters may have more details on when that fateful day is actually to occur.
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I have mine two inches apart as the pole they are on is about an inch wide. I’m sure it should be better to have some more of an air gap but does not bother my system enough.
That’s good to know simtra. I’m more focus on having good reception within 50 miles anyways. Anything more than that is a bonus.
That is a great install. I also made ‘L’ offset poles and mounted the ADSB 978 and 1090 antennas away from the mast since neither are at the top, yet.
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