I am in general agreement with what RCinFLA said.
Adding a few details of my own:
how would i check and where measure with a scope if its working.
what signal can be placed in to check.
A scope is not a good tool to use for small signals (micro-volts) at 100Mhz.
In the absence of any good test equipment, the best you can do is to tune your radio to find a weak station "off air", connect the amplifier between the antenna and the radio and then tune the amplifier for best signal and lowest noise from that weak station.
I have done that myself many times before I became well endowed (with RF test equipment!).
i could not get 2sc2570 but got replacement nte107(with this transister do i need to alter something).
The NTE will probably be OK, it does not have a particularly low noise figure (4dB) but good enough for this application.
Just build it and see what happens.
what do they mean by the ground?
on a radio u dont have a ground (must i use neg of battery)
Ground, a very mis-used and mis-understood term.
In this case however, yes, it means the -ve supply.
also the input of the amp, just a long wire or what kind of antenna?
If you do not use a proper antenna designed for VHF, you are wasting your time with this amplifier!
if the antenna must be a large one, lets say outside would u place the amp by the antenna side or by the radio?
For best performance, the amplifier should be located at the antenna to overcome the effects of loss in the coax feeder cable from the antenna to the receiver.
Depending on the relative noise figures of the amplifier and the receiver, just try putting the amplifier at the receiver and see what happens.
At VHF, a proper outside antenna, connected to the receiver with low loss coax cable, will always outperform some odd bit of wire poked into the antenna socket of the receiver. Even if that odd bit of wire does connect through an amplifier such as we are discussing here.
JimB