The reactance-tube modulator used in a short-range, military FM radio
22.6 MHz. The characteristics of the modulator tube are as follows:
transconductance (gm) = 5,000 micromhos.
Exercises 3 thru 5 are based on this situation.
3. The electron-tube characteristics described in paragraph 21 of TM 11-668 are
computed under static conditions, that is, without a load resistance.
amplification factor of the electron tube used in the modulator circuit is
load consisting of R1 and C1 is
a. less than lOOK.
between 125K and 150K.
b. between 100K and 125K.
greater than 200K.