This amplifier was found in a 1970s documentation. Darlington transistors can be replaced for modern equivalents of at least 80 V x 2 A, equipped with good heat sinks.
For the 400 to 500 MHz bands, this circuitry found in an 80's documentation uses a very critical...
We found this circuit in an old documentation for hams. In it we have the way to use a varicap to...
The SN72741 integrated circuit is nothing more than the version of Texas Instruments of the known...