Radio scematic help?

[Shark376]

I'm looking for pointers with the following project please...

I want to prevent a 40m pixie kit from transmitting, and wondered if I could leave out one of the transistors? I will try to add a schematic.

Thanks!

 

[Shark376]

 

[slicerwizard]

Normally, I'd be cutting the power trace to the transmitter, but if you're assembling this, then just leave out everything on the positive rail that goes to the transmitter circuit.

 

[Shark376]

Thank you.

 

[Ubbe]

That modification would render the whole circuit including its receiver function inoperable.



/Ubbe

 

[Shark376]

Do you think there would be a way? Or maybe just leave out the key socket?

 

[n0xvz]

Couldn't you just build it as normal, but not connect a key to it?

 

[Ubbe]

I wouldn't bother with that circuit. It only works on the frequency of its crystal and the received signal needs to be huge from a very long 60ft wire antenna, as there's no amplification, to produce an enough interfering signal to make a beat tone strong enough to be heard from the audio amplifier. It probably only works with CW morse code from someone in your neighborhood using a 100W transmitter.

/Ubbe

 

[Shark376]

Thanks for the replies.

The kit was already on order from China, so I can't really change my mind.... But for the small price it cost, I'm not too worried if it isn't that great - it's just sometimes nice to make something.

I expect I may get something better one day, kit or not.

 

[RFI-EMI-GUY]

Just leave out the jack for the key.