3 Watt FM Transmitter

 

1. Email Rae XL Tkacik with questions, comments, etc.

 

2. The circuit has been tested on a normal RF-testing breadboard (with one side copper). Make some connections between the two sides. Build the transmitter in a RF-proof casing, use good connectors and cable, make a shielding between the different stages, and be aware of all the other RF rules of building.

 

3. Q1 and Q5 should be cooled with a heat sink. The case-pin of Q4 should be grounded.

 

4. C24 is for the frequency adjustment. The other trimmers must be adjusted to maximum output power with minimum SWR and input current.

 

5. Local laws in some states, provinces or countries may prohibit the operation of this transmitter. Check with the local authorities.

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