When making a broadband amp the choice of the ferrite transformers is importent. So in the case of the first amp, the output transformer is 1+1 :1 ? so feed 100mmV into the output lead and measure at the transistor collectors. you should get 100mV across the HF band, if it drops off at too low a frequency, either the core is not the correct sort for HF, or you have too many turns on the core. The cores we used to use were Mullard FX NNNN, there wer two sorts, one for HF, the other for 20 =70 MHZ (vision IF?). they needed one turn for 50 ohms and worked from 30 MHZ right down to .5 or so. You can expect a little drop off at 30 MHZ as spurious lead inductance comes into play.
Frank