[amsat-bb] Cables loss

Hi as a newcomer to this part of the hobby I have a couple of questions.

1. When using the M2 egg beaters how important is it to install a masthead preamplifier?

2. Again with egg beater will 30 watts be enough to get back to the bird?

I am using about 80 feet of RG213 to connect the antenna.

Many thanks

Roger G0AWY

73