Hi,
Ok understood might not be a good choice for HF frequencies. But if your main focus is 440 on up then it’s not bad. Thanks for sharing your knowledge on these units. I have 2 3416 and 1 3413. One 3416 is the (hot) and one is the (cool) version: My 3413 is the (cool) version. Options on my (hot) 3416 are 03, 05, 09, 010.
I’m attaching pictures to show others the difference. Since I have both I’ll run some thermal couples in different locations to see what the temperature difference is in fact. I can do this with the 3413 as well.
I’ve worked on these power supplies, I understand their limitations, see my other posts on various forums. If your supply has SMDs under L12 then the fan that cools the supply must be running in standby, from the factory it does not. If your supply has two large ceramic resistors by L12 then your fan does not need to run when in standby. For those of you with the SMDs just plug the power supply cooling fan (with little adapter cable)into one of the two available fan ports near the center inside of the power supply. The power supply will control the fan speed when the supply needs more cooling. The 3410 series also controls the fan but it looks at the cpu board temp..
Hot version units have 612NGHH 33cfm, cool units have the 622HH fan 32cfm. These ratings are at 0 pressure, no grill. They need the integrated grill for RF leakage issues.
Hope this helps anyone trying to keep these units cool. My suggestion would be to leave the unit unplugged until you need to use it. Don’t leave it on all day especially if your using it at home or in your garage, much warmer then if it’s being used in an air conditioned environment. Dont mount them into a rack, they'll have no chance of sucking in cool air.
Michael