[Elecraft] 4k monitors for the shack, late 2019

[Jim Brown]

On 11/7/2019 12:47 PM, Tox wrote:
> What can people suggest for quasi-affordable*RF-quiet*  4k displays in
> the 27-40" range? (I'm not averse to buying something like one of the
> midtier Samsungs, but do not have enough left in the wallet to
> consider things like OLED).

Why 4K? I own a half dozen 23-in 1920x1080 Samsung displays that 
nominally use 14VDC, but run just fine on 12-13VDC. The major source of 
noise for most displays is the switch-mode power supply (wall wart) that 
provides that DC voltage. I cut the cable for the noisy power supply, 
splice it to an old linear supply. I've gone a step further -- I run the 
monitors in my shack from a big 12V battery that runs other ham gear, 
and float-charge that battery with a suitable charge regulator.

Since I bought these (about $200 each), the trend has been to higher DC 
voltage. Also, larger and higher res displays tend to use higher voltage.

73, Jim K9YC