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* The description tells how the device amplifies a wide spectrum of frequencies, up to 10 GHz. I believe its output is suitable to send to an antenna. (50 ohm impedance is cited which is conventional in rf equipment.)

With such versatility it's easy to change the frequency of transmission and tune your antenna to match. Thus your circuitry is not limited to operating on one frequency or narrow band of frequencies. I saw an old-timer remark how any HAM can reach a long distance with 1/2 Watt by using the proper tuned antenna.

* From the datasheet it seems that Vg1 should startup at -2V, then you adjust it manually while operating. I believe you need a flexible circuit rather than TL431.