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25 watt FM transmitter.

Rich4077

New Member
I have a 1-25 watt FM transmitter. I had it putting out 25 watts. Then one day I can't get more than 1.5 watts output. Tested with a dummy load. 1.5 watts output. Why? Antenna? Bad circuit in transmitter? Thanks.
 
I have a 1-25 watt FM transmitter. I had it putting out 25 watts. Then one day I can't get more than 1.5 watts output. Tested with a dummy load. 1.5 watts output. Why? Antenna? Bad circuit in transmitter? Thanks.
Which transistor does it use?
 
I have a 1-25 watt FM transmitter. I had it putting out 25 watts. Then one day I can't get more than 1.5 watts output. Tested with a dummy load. 1.5 watts output. Why? Antenna? Bad circuit in transmitter? Thanks.

A much more productive way to enable forum to help is information, such as post a schematic,
and even a well focused pic of board.
 
Try transmitting into a dummy load through a wattmeter to eliminate the antenna as a possible failure. Unfortunately, the power amplifier sections of these smaller radios tend to be undersized and are often the main point of failure.
 
I have a 1-25 watt FM transmitter. I had it putting out 25 watts. Then one day I can't get more than 1.5 watts output. Tested with a dummy load. 1.5 watts output. Why? Antenna? Bad circuit in transmitter? Thanks.
Simple question: How are you measuring the output power?
 
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