SZ123

 
A radio circuit diagram, Use IC TA2003, Tea2025

Use RD06HVF1, RF input max 10dbm, RF output 37dbm. 12V DC
http://www.elecsky.com

The circuit is very simple with only 5 parts, but performs very nicely when used with the right size antenna.

Part
Total Qty.
Description

C1
1
Tuning Capacitor (See Notes)

D1
1
1N34 Germanium D...

This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input for a record player, guitar, microphone or other un-amplified source. With the addition of a...

The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home theater system, or as an amp for computer speakers.

Part
Total ...

Here is the LM383 schematic for an 8 watt audio amp. Very easy to build a mini-audio power amplifier.

Part
Total Qty.
Description
Substitutions

C1
1
10uf Electrolytic Capacitor
 

C2
...

Author Rae XL Tkacik
This is the schematic for an FM transmitter with 3 to 3.5 W output power that can be used between 90 and 110 MHz. Although the stability isn't so bad, a PLL can be used on this circuit.
This is a circuit that I've buil...

bfr965-wireless-microphone-circuit

Here is the schematic, PC board pattern, and parts placement for a low powered FM transmitter. The range of the transmitter when running at 9V is about 300 feet. Running it from 12V increases the range to about 400 feet. This transmitter should not be...