Walkie Talkie Circuit Question

[dr pepper]

Keep the red & blue wires leading out from the transformer you drew a picture of as far apart as you can, otherwise it looks ok.
The blue transformer you sent the pic of looks like an Lt44 and ought to work.
Moving the slug inside the transformer as you wind it up & down will 'peak' the output, ie the range will be highest when its set or tuned to the best point.
A very simple rf power meter made from a few comps would be handy here, I think theres one on Dick Cappels's website, just 'twiddle' the transformer core till the meter reads highest.

 

[Pvlic]

Yes.

JimB

Hi, one question about the circuit. Is there a node in the antenna part of the circuit? (Encircled in the image).

 

[JimB]

The wires are not connected at the point shown on your diagram.

JimB

 

[Pvlic]

Measure the primary resistance and secondary resistance with your multimeter. Primary resistance should be very higher than secondary.

Where is the speaker connected? Primary or Secondary?

 

[Willen]

The lower resistance (approx 8 ohms) side should be connected to speaker.