28 Mhz preamplifier (CB20265E)

We found this preamplifier for the 10 and 11-meter range in an old documentation for radio amateurs. The integrated circuit used is uncommon today.

| Clique na imagem para ampliar |

555 Tester (CB20887E)
To fit the integrated circuit under test, we used an 8-pin DIL socket. Observe the fitting...
Receiver via power grid (CB5068E)
This receiver can be used to receive signals from the previous circuit transmitter. The circuit is...
Cassette Recorder MR480 (CB18496E)
This is the 1968 MR480 commercial cassette recorder circuit. The circuit was fully transistorized and...