Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

330uH is a pretty big inductor for FM/VHF. RV1 controls RF gain (think of TR1 as two JFETs, one a current source and one a common source amplifier in a small signal model). TUNE VOLTS changes the resonant frequency of the two tank circuits. TR2/TR3 is an impedance buffer. The rest is decoupling.

Looks like a tunable preselector to me rather than a receiver. So part of a receiver yes.



Consider applying for YC's Winter 2027 batch! Applications are open till November 2.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: