2021-03-09, 09:19:59
A bit of trivia I found:
The IC-7300 S-meter isn't calibrated the way you'd think it should be. John Akerman N8UR measured the meter response. His results are in the attached table. I included the so-called "Collins Standard" which is the way I thought most manufacturers calibrated their S-meters. (±1 S-unit = ±6 dB, S9 = -73 dBm or 50 µV into 50Ω). The IC-7300 is spot on at S9, but each S-unit change appears to be about 3 dB, not the expected 6 dB. Curious.
73
Dave, VE3WI
PS: John's blog post is at https://blog.febo.com/?p=378
The IC-7300 S-meter isn't calibrated the way you'd think it should be. John Akerman N8UR measured the meter response. His results are in the attached table. I included the so-called "Collins Standard" which is the way I thought most manufacturers calibrated their S-meters. (±1 S-unit = ±6 dB, S9 = -73 dBm or 50 µV into 50Ω). The IC-7300 is spot on at S9, but each S-unit change appears to be about 3 dB, not the expected 6 dB. Curious.
73
Dave, VE3WI
PS: John's blog post is at https://blog.febo.com/?p=378