Most radios will state the max current draw at 13.8Vdc. For example my Yaesu 991A's max current draw is 23A @ 13.8Vdc. Factor in about 70% AC power supply efficiency (your power supply’s specs will state efficiency). P = (23 * 13.8)/0.7 = ~454W @ max power consumption on AC. Use this number plus a safety factor to calculate for capacity. The Kill-a-Watt will give you a more accurate picture of average power consumption based on your specific usage (SSB, CW, Digi,etc).
Just out of curiosity, what are you planning on cooking with this number? Best, Sal AI5FL > On Dec 12, 2021, at 1:12 PM, Mike Lambert via BVARC <[email protected]> wrote: > > Yes, I would like to know how many watts an HF radio draws. > > Mike > > On 12/11/2021 4:01 PM, Christopher Boone wrote: >> You mean a KWH meter like the power companies use?? >> >> On Sat, Dec 11, 2021, 3:58 PM Mike Lambert via BVARC <[email protected] >> <mailto:[email protected]>> wrote: >> Could someone use a Kill-A-Watt meter to measure the AC power required >> for their HF rig to receive and transmit? >> >> Thanks, >> Mike KI5MIK >> >> >> ________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> [email protected] <mailto:[email protected]> >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> <http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org> >> Publicly available archives are available here: >> https://www.mail-archive.com/[email protected]/ >> <https://www.mail-archive.com/[email protected]/> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/
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