Freed-Eismann NR-10

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Freed-Eismann NR-10

Arran
Phorum Expert

Posts: 4,703
Threads: 51
Joined: Sep 2008
City: Sandwick, BC, CA

07-20-2018, 06:49 AM

It's a neutrodyne apparently, so the RF coils will have a neutralizing winding, and will be mounted on an angle. The neutrodyne circuit was very popular in the years prior to screen grid RF amplifier tubes such as the #24, because TRFs using triodes had a nasty tendency to create feedback loops limiting the amount of gain you could have, the neutrodyne allowed more gain without the osculation problems. Fada was famous for building neutrodynes, as was King Hiners, Freed Eisemann obvioulsy, and oddly enough Stromberg Carlson.
Regards
Arran

(This post was last modified: 07-20-2018, 06:52 AM by Arran.)

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Freed-Eismann NR-10 - by GarySP - 07-16-2018, 11:38 AM

RE: Freed-Eismann NR-10 - by Phlogiston - 07-16-2018, 12:31 PM

RE: Freed-Eismann NR-10 - by Arran - 07-17-2018, 05:25 PM

RE: Freed-Eismann NR-10 - by mikethedruid - 07-17-2018, 07:16 PM

RE: Freed-Eismann NR-10 - by GarySP - 07-19-2018, 09:15 AM

RE: Freed-Eismann NR-10 - by Arran - 07-20-2018, 06:49 AM

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