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
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
