Kraco KCB-2340 10M mod for full tuning, not channels.

VK3ZYZ

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KracoModdedFront.jpg

I've started on a Krako KCB-2340 conversion to 10M. This is not as easy as the AX-144 was. First, I removed the front to enable the channel switch removal. Then, 3D printed a mount for the OLED display and rotary encoder.

The 14Mhz and 23Mhz crystals and osc feedback caps went away.
KracoMods1.jpg

Remove C201 and C211. Feed the base of Q201 with the 23Mhz from the Si5351, and Q203 with the 14Mhz generated.

Here is the synth in place...
KracoModsSynth1.JPG


I've a number of photos showing the wiring that I will have to check as something has snapped off. I did find one and that partly fixed it. Solid wires and wire-wrap connections!! Here is one for example...
KracoPreMods7.JPG

This shows the mass of wires that are laced together and quite easy to snap.

Here is the code so far. It is a work in progress!
 

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