what is the maximum signal strength that is save for a tv?

[www2]

Hi

I wand to make an tv transmitter (close loop).
But i wand to know what is maximum signal strength that is save for a tv?

[T3sl4co1l]

Way the hell higher than the legal limit (equivalent to FCC Part 15; I don't know where it's called out in .eu), that's for sure.

Most likely 3 V/m, whatever that comes out to at your antenna and distance.

Tim

[donmr]

A strong tv/radio signal is -70dBm, about 100 pico watts.

I looked up the specs for a commercial tv signal preamp.  Its maximum input power is about 500 nano Watts
and its maximum output power is about 100 micro Watts.  Keep in mind they probably expect the output to
go through splitters and cabling which will reduce the power before it gets to a TV.

You will probably find that the input distorts badly with much weaker signals that those that will cause damage.

[TheMG]

I live so close to a TV broadcast transmitter, that with a simple dipole antenna I get close to 0dBm (1 milliwatt) of signal going into my TV, which it seems to be perfectly happy with.

But what is it that you're trying to do anyways? Generate a TV signal directly into the TV? If so, you can always use external attenuation if you need to lower the signal level down some. No need to go crazy with how much signal you put into the TV. 75ohm CATV attenuators are a dime a dozen.

[coppercone2]

the most sensitive RF preamplifiers have something like a 10-20dB maximum limit. thats for devices that go from dc to daylight and cost 2000+. even most spectrum analyzers can tolerate 1W. (30dB).

Hard to imagine a transistor so sensitive that 1mW would fry it. Think about how much thermal energy and voltage in a 75 ohm system at 1mW... I think that device would be very mechanically fragile too if it was that sensitive to small thermals and voltages..

[www2]

Thanks.
@TheMG
I wand to build a small TV TX for sending A/V over a cable to my TV and i wand not destroy my old CRT TV.