‰  NOW 20 WPM  ‰  TEXT IS FROM SEPTEMBER 2018 QST  PAGE 41‰

DC OUTPUT SPECTRUM, SHOWN IN FIGURE 3, IS VERY CLEAN WITH LITTLE RF
RADIATED FROM THE DC POWER CABLE.  THE AC INVERTER OUTPUT IS A NICE SINE
WAVE, AS SHOWN IN FIGURE 4.  CONDUCTED EMISSIONS TESTING INDICATED THAT THE
AC OUTPUT COULD CAUSE SOME INTERFERENCE TO HF RECEIVERS.  THE NOISE PEAKS
EVERY 65 KHZ OR SO, AND TABLE 1 SHOWS THE STRONGEST EMISSIONS IN THE
AMATEUR BANDS.  THERE IS NO DIFFERENCE IN CONDUCTED EMISSION DURING FULL
LOAD AND NO LOAD OPERATING CONDITIONS.  THE WORST CASE WOULD BE NEAR AN HF
RECEIVING ANTENNA.  IF NOISE IS AN ISSUE, TRY AN AC LINE FILTER SEE THE
INVERTER GENERATOR REVIEW IN THE JUNE 2012 ISSUE OF QST.  TO LISTEN FOR
NOISE GENERATED BY THE YETI 400 LITHIUM, I PLACED THE UNIT ON THE FLOOR
NEXT TO MY STATION SETUP, ABOUT 5 FEET FROM THE RADIO.  I PLUGGED A LIGHT
‰  END OF 20 WPM TEXT  ‰  QST DE W1AW  ƒ