Single Tube 4CX250B Amp For 27Mhz The Build Pt10

[@kevindrury8390]

Double B a radio repair man , when I was young made them out of sheets of Teflon and sew the side together

[@micro4329]

Hi Norman just seeing the new videos you posted they are great just a suggestion for a case a junk microwave oven would be really nice base with very little modifications. I'm trying to build a gi6b tube amplifier using a antenna tuner for rf deck and a microwave oven for the case. It's a slow go figuring out layout and learning what parts n basically learning as I go. That's why I'm going to build this amplifier in your video first maybe after it I'll know enough to finish the gi6b project. Thank you so much for your patience and time to teach. Kenny

[@ronaldpotter3962]

keep them comming Norm, looking forward to the power !

[@cornelishummel7987]

good and decent demonstration keep up norman the good work

[@walterathow5988]

good safty device thanks Norman

[@MM0IMC]

13:00 I use a high temperature silicone rubber tubing from an auto parts shop, as a chimney. It's designed for over 200C temperatures, like air and water flow around an engine. I use it on my GS35b 10m homebrew amplifier and that runs up to 1.5kW in to a dummy load easily. It doesn't burn or smell and is electrically non conductive.

[@cornelishummel7987]

Hey norm wwhen you coming back for more informations and building

[@kevindrury8390]

Yes conduit punch is 7/8" * 1-3/32"* 1-11/32"* 1-11/16. For 1/2 to 1-1/4" conduit

[@MM0IMC]

2:45 Would a diode do the same job as the capacitor, to stop back EMF, once the relay opens?

[@radiomedic111]

NO it is not back EMF...it is more like Plasma, kind of like the same thing that happens in a plasma torch as it takes a spark to get it started.

[@MM0IMC]

@@radiomedic111 what I was meant was the diode is there to quench the spike that is induced, once the relay opens up and the magnetic field collapses within the coil of the relay.