CRK-10 CW Transceiver Kit Manual
Rev. B
CRKITS.COM
Oct 22, 2012
RockMite was introduced to China years ago by BD6CR/4. BD4RG, the designer of HB-1A and
HB-1B, improved the design by rewriting the firmware, increasing RF power output, and
smoothing the keying. The improved version is called Octopus in China, and already received good
reputation and popularity among Chinese QRPers. Now CRKITS.COM proudly introduces this kit
to the worldwide, and names it as CRK-10 CW Transceiver kit.
The RF output power is about 3 watt at 12V. Power supply range is 9-15V. TX current is about 500
mA, and RX current is about 15 mA (measured at 12V). The built-in MCU can generate side tone of
about 700 Hz, switch RX/TX, and act as a keyer for not only paddle (normal paddle or bug key
simulation mode), but also straight key.
The receiver is a direct conversion receiver, but the sensitivity is very high because of a two-pole
crystal filter in the receiver front-end and an audio filter, which block interference and filter out
background noise. The MCU automatically shifts TX frequency, generates side tone and acts as the
keyer, which makes the whole radio quite practical. The power supply polarity protection and the
high SWR protection make the radio durable.
