CCI Motorola EB104 HF Amp

[cncjerry]

Years ago I bought a CCI 600w amp kit based on the Motorola EB104.  For a host of reasons, I just started building it after 11yrs.  It took me almost a month to find the transistors that Tom Sowden had sent me in 2005.  Having all the pieces now I am starting the board + copper spreader + heatsink.  I have a complete CNC machine shop so I shouldn't have problems in the physical construction.

I am looking for others that have build this amp.  The main question I have is the replacement of T3 with a transmission line transformer (TLT).  I can't find the TLT information though admittedly I've only done a cursory search.  I've found some note on the TLT on eHam but no building instructions.

The power supply looks easy and I plan to get a transformer either from Ameritron or there is a toroidal transformer company that has an off the self transformer that will work.  I have a lot of computer grade caps, diodes, etc.   I'll probably add a micro-based SWR monitoring and control system as well as automatic band switching for filters.

Any pointers would be appreciated.  Also, if others have been kicking around starting this project, I'll help them with the machining of the heatsinks and spreader.

Thanks,


Jerry

[German_EE]

You may find the following links of interest:

http://www.eham.net/ehamforum/smf/index.php/topic,83561.0.html

http://home.earthlink.net/%7Echristrask/Trask1to1IsolBalun.pdf

73

German_EE