Schematic to use 24A tubes

4/25/2006 11:28:48 PMJK

Does any one have a schematic that would use 2 or 3 tetrodes, and maybe a pentode, or tiode ppl for the output, that wouldn't realy require the use of interstage x-formers? I wnat to build a radio of about the 30's era, i have a couple of 24's and 24A's to do this with, but i don't have alot of expireince of winding my own coils, or figuring out the frequency of them. I have been seaching through some manufacturer schematics, but few give resistence and cap. values, let alone how many turns of what gauge wire is used for the osc.

Thanks for any suggestions. JK

4/26/2006 12:29:46 AMRich, W3HWJ

:Does any one have a schematic that would use 2 or 3 tetrodes, and maybe a pentode, or tiode ppl for the output, that wouldn't realy require the use of interstage x-formers? I wnat to build a radio of about the 30's era, i have a couple of 24's and 24A's to do this with, but i don't have alot of expireince of winding my own coils, or figuring out the frequency of them. I have been seaching through some manufacturer schematics, but few give resistence and cap. values, let alone how many turns of what gauge wire is used for the osc.
:
:Thanks for any suggestions. JK

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You might try Dave Schmarder's web site. He builds a lot of tube radios and has schematics.

http://www.schmarder.com/radios/tube/32-32-31.htm

Good luck,
Rich

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4/27/2006 4:49:58 PMtubeAMP

::Does any one have a schematic that would use 2 or 3 tetrodes, and maybe a pentode, or tiode ppl for the output, that wouldn't realy require the use of interstage x-formers? I wnat to build a radio of about the 30's era, i have a couple of 24's and 24A's to do this with, but i don't have alot of expireince of winding my own coils, or figuring out the frequency of them. I have been seaching through some manufacturer schematics, but few give resistence and cap. values, let alone how many turns of what gauge wire is used for the osc.
::
::Thanks for any suggestions. JK
:
:*********************
:
:You might try Dave Schmarder's web site. He builds a lot of tube radios and has schematics.
:
:http://www.schmarder.com/radios/tube/32-32-31.htm
:
:Good luck,
:Rich
:
:*************************

Im working on a Philco 20. Uses 24As, 27 and 71A output with 80 rectifier. Heres the print from this site: http://www.nostalgiaair.org/PagesByModel/582/M0029582.pdf