On 14/3/20 9:24 am, Ian Jackson wrote:
In message , micky
writes
In sci.electronics.repair, on Sun, 23 Feb 2020 07:49:17 -0700, KenW
wrote:

On Sun, 23 Feb 2020 09:03:23 -0500, micky
wrote:


Reception at a remote TV** has degraded and I thought maybe a splitter
connection had gotten bad, even though they are all indoors.

No electronics stores in town anymore.Â* Home Depot has normal ones but
Google came up with
https://www.walmart.com/ip/2-Way-Coa...90dB-1-DC-Pass
ing/892650362

And my question is, 90db!!!Â*Â* I'd think it was a typo, but there's a
picture of it and it says it in big letters.Â* This is loss, right?
Typical loss is 3.5db.Â* With 90db loss, there's be almost nothing left.

Is this meant to fool suckers?Â* Even if this were meant to fool
suckers,
would anyone even make a splitter with 90db loss?Â* (It also
......

Probably 90db isolation between output ports


KenW

That accounts for it.Â* Thanks.

90dB is highly optimistic. 40 dB would be more typical (but still
adequate), and maybe a bit less at 2GHz.

If they do mean 90dB, it's probably the screening factor (a measure of
signal leakage and ingress). 90dB would be good.

Could be 90dB/Hz?

CH