THE PA3CEG
23 CM GS35b PA Parts

Safety first, so all the HSP parts were masked with Teflon or PVC covers.

23cM-GS35-cool7.JPG
23cM-GS35-cool7.JPG
23cM-GS35-compl4.JPG
23cM-GS35-compl4.JPG
Air is forced through the cathode cavity, before exiting 23cM-GS35-ff-cat.JPG
23cM-GS35-ff-cat.JPG
23cM-GS35-cav1.JPG
23cM-GS35-cav1.JPG
23cM-GS35-kat3.JPG
23cM-GS35-kat3.JPG
23cM-GS35-kat2.JPG
23cM-GS35-kat2.JPG
After testing, holes were enlarged to increase airflow 23cM-GS35part4.JPG
23cM-GS35part4.JPG
23cM-GS35-kat.JPG
23cM-GS35-kat.JPG
23cM-GS35parts.JPG
23cM-GS35parts.JPG
23cM-GS35-kat1.JPG
23cM-GS35-kat1.JPG
The grid connection is 2 half rings of finger stock, which slide into the tube 23cM-GS35part3.JPG
23cM-GS35part3.JPG
23cM-GS35part1.JPG
23cM-GS35part1.JPG

After the first test, I changed the airflow direction. The air is now pushed into the outside holes and pulled out by the second blower. Working now to cool down the grid tube and the air stream with a Peltier element. Another option is to cool the grid tube outside with water cooling and also inside water cooling on the cathode must be possible. There is a lot off heat to exchange, due the low efficiencies on 23 cM. I continue to work to reduce thermal drift problem.

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Last Updated: 13 February 2002
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