[Elecraft] about 60m erp
Roy Koeppe
k6xk at ncn.net
Thu Nov 12 07:30:47 EST 2015
“Kpa500 on 60 is illegal unless you have a *measured and
documented* VERY lossy antenna that would reduce the effective radiated
power to the same as 100 watts on a dipole. The simple 99 percent answer is
that on 60m SHUT OFF the Kpa500 and run 100 watts barefoot.”
Let’s see,
“antenna tuner” loss + coax loss = -1 dB
vertical ant “pattern loss” vs. dipole gain = –2 dB (antenna shorter than quarter wave)
“ground loss” under vertical ant (typical) = –2 dB
total, –5 dB, or around 250 watts or so from an amp for 100 w erp?
73, Roy K6XK
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