word wide radio phone sensitivity

can sb help me to find anwsers to the following questions

a. All the word radio phone receivers (AM,FM,SW,LW) have superheterodyne receiver?

b. Can sb tell me suggestively values of sensitivity (dB or μV) of a common world wide radio phone receiver?

c. any manual of a SONY product to download free?

Hi thanasaras

In this link you find some informations about world radio receivers.

h**p://www.rnw.nl/realradio/rx_curr.html

( change ** to tt)

Enjoy

jackrs 8)

Here is the link for Icom brand receivers http://www.icomamerica.com/receivers/index.html You can look at the data sheets for various types.