Hi.
Chip is TA7358. Its data sheet shows internal circuit explanation for pin 1. Is that correct ?

 

Its data sheet shows internal circuit explanation for pin 1. Is that correct ?

Why would you think it was not correct?

DeciBel forever!

 

Thanks. Antenna signal entering across 1K to emitter node and gnd. ¿?

 

Hello,

The input amplifier is a common base amplifier:
https://www.elprocus.com/common-base-amplifier-circuit-working-applications/

Bertus

 

Thanks. Antenna signal entering across 1K to emitter node and gnd. ¿?

The input signal varies the voltage between the base and emitter. That will make the collector current change.

 

Thank you, guys.