What is a dummy load? MFJ-264 for Ham radio 

This one not that good and way overrated and you be lucky you get a more then a couple of seconds at the power it rated for without it burning up. A true 1.5k dummy load is oil filled and much larger and can handle the power continuously without overheating, but cost $200 bucks, or more. You can find them used at meets, or eBay cheaper, just have to watch for deals, recommend the large Bird, or Termaline as they are built the best and way underrated. We use the birds for commercial and out in the field use when testing 2 way transceivers and they last a lifetime. That MFJ is junk, but better then nothing and ok if limited to a couple of seconds, or low power.

I hate that and feel like doing the same I heard someone on the HF band that was whistling and yelling Testing today on the HF band and clearly doesn't know how to tune as a bunch of splatter as well and clearly it was a amp he was tuning as can hear the loud fans in background. Yes CB techs as well are know for this and yes commonly yell AAAAAAAAUUUUUUUUUUUUUUUUUUUDIOOOOOOOOOOOOOOOO all day, in a area that truckers live.

I believe so, but the 1.5kW PEP model is a bit overkill. the 300 watt PEP is more in keeping. I have a G90 as well so the lower power one is what I'll be getting. I don't anticipate pushing out full legal limit for the foreseeable future.

Meisam a bunch of resistors