455KHz bfo schematic needed with transformers

[neazoi]

Hello I need a bfo schematic for 455KHz (not tuneable ) that uses these 455KHz IF cans as resonators, and another one on the output coupling.
I need it to be made using BJT, not mosfet
Any ideas?

 

[tanveerriaz]

https://www.flashwebhost.com/circuit/ham_radio_bfo.php
https://www.qsl.net/py2ha/bfo/bfo_455.htm

if you use xtal or Ceramic Filter it more stable
https://radioaficionsdr.es.tl/Osciladores.htm
https://www.flashwebhost.com/circuit/ceramic_filter_bfo.php

search in google or hamradio side

 

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