Q R P

LED Display Frequency Counter - by DL4YHF
This frequency counter was based on the work of DL4YHF, its use the amplifier of entry of the he QRP-BR counter. It is an alternative for dials of receivers and transmitters. Through the push botom connected with the pin 4 of the PIC we can do the planning of offset.

 

Above we have a amplifier that will be able to be used. I used such a circuit in the local oscillator of the Neophyte, when there are withdrawing the sign straightly of the pin 7 of the CI SA602, there was no additional load in the oscillator.

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