[ARC5] [Milsurplus] GO-9: Cathode Mod Questions

[Bry Carling]

Yup. Sounds good. Set carrier to about 25% and have at it!

Best regards - Bry Carling, AF4K





On Dec 24, 2019, at 12:51 PM, Roy Morgan <k1lky68 at gmail.com> wrote:

Ken and others,

I remember cathode modulators made with the series pass regulator tubes 6AS7, 6080, and possibly their BIG Brothers, the ones with carbon plate structures.

I have not looked at all the links so kindly posted, but if one or more of them shows use of such tubes, I won’t be surprised.

I have a GO-9, so I am quite interested in all this.  Hoping one day to replace the PP-4763 that was lost in “the disaster” some time ago.

Roy


On Nov 20, 2019, at 4:12 PM, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:

The October issue of Electric Radio Mag includes an excellent article on
cathode-modulation beginning on page 34.

I highly recommend it to anyone contemplating this method. From this article, it appears that
rather than dropping the final plate current by 50%, it is better to drop it even further before
modulation....like 70% lower, or 30 watts instead of 100 watts.n

Roy Morgan
K1LKY since 1958
k1lky68 at gmail.com




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