Rock-Mite 20m Transceiver

The Rock-Mite transceiver

The Rock-Mite is a crystal controlled transceiver kit designed and sold by Small Wonder Labs. I choose the 20 meter version and extended it with a variable x-tal oscillator (VXO). This facility offers a tuning range of 10 kHz (14.052 - 14.062 MHz). The RF output is 300 mW but can be raised to about 1 watt.

The receiver is a direct-conversion type, which means that all selectivity is at audio frequencies. I have added a 2-stage audio filter (circuit diagram by KD1JV - you can find it here) to enhance selectivity. The finished audio filter can be seen in the photo below.
 
Picture of the Rock-Mite
The finished audio filter
The Rock-Mite (factory photo).
The KD1JV audio filter.

The Rock-Mite files it a useful homepage for Rock-Mite info and ideas. The Rock-Mite even has its own Yahoo group.

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Created 15-Jan-2006, updated 27-Oct-2009.
Author: Lars Petersen, OZ1BXM.