DCF77 antenna for DIY transmitter

[asiawatcher]

Hi there I have a flipper zero and I'm trying to do this implementation

Flipper Lab

Web platform for your Flipper

lab.flipper.net

in the comments it says:

"When using the GPIO, best results are achieved if you connect a ferrite antenna over 330 ohm resistor and a capactior to ground."

any idea what capacitor we use to achive this ? volts capacity ? how will resistor be connected either way is the same ?


I bought one of these just to use the antenna https://www.ebay.com/itm/203638784817

Thanks