Trying to figure out why my resonant 20m dipole and my Norcal doublet (both ~1/2 wave above ground level) seem quite a bit less sensitive to RX than a KiwiSDR station ~40 miles away using an 80-10 OCF.
The latter showed 20m SSB hopping while my setup just isn't seeing anything but the strongest signals (-117 dB noise floor on the KiwiSDR vs -120-130 dB on mine)
I really don't think it's receiver sensitivity (I hope it's not).
Does antenna length & height factor into sensitivity?
#HamRadio
Joe KC1SRI /
npub16y…vt5vl
2023-08-04 16:10:04
Author Public Key
npub16yqcxrw5jvynccyyn54heem9xxl4cndmeh7gjwcsn72tlxl4yhusxvt5vlPublished at
2023-08-04 16:10:04Event JSON
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"content": "Trying to figure out why my resonant 20m dipole and my Norcal doublet (both ~1/2 wave above ground level) seem quite a bit less sensitive to RX than a KiwiSDR station ~40 miles away using an 80-10 OCF.\n\nThe latter showed 20m SSB hopping while my setup just isn't seeing anything but the strongest signals (-117 dB noise floor on the KiwiSDR vs -120-130 dB on mine)\n\nI really don't think it's receiver sensitivity (I hope it's not).\n\nDoes antenna length \u0026 height factor into sensitivity?\n\n#HamRadio",
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