| To: | "'Manuel R. Alonso / KC4MNE'" <kc4mne@bellsouth.net>,<amps@contesting.com> |
|---|---|
| Subject: | [Amps] RE : Quad Tube 4cx800 hf amp |
| From: | "hermans" <on4kj@skynet.be> |
| Date: | Fri, 26 May 2006 17:12:55 +0100 |
| List-post: | <mailto:amps@contesting.com> |
Leaf the the filament ON, and dont feed or connect the Anode..............nor the grid. It will be a nice looking AMP !!! 73 Jos ON4KJ/OS5N -----Message d'origine----- De : amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] De la part de Manuel R. Alonso / KC4MNE Envoyé : vendredi 26 mai 2006 2:50 À : amps@contesting.com Objet : [Amps] Quad Tube 4cx800 hf amp Hello Would it be feasable to build a 4 tube amplifier using the 4cx800 russian tubes. I calculated a plate impeadance of about 490 ohms, using (2600V 3.0 amp supply) However for a Pi output I am looking at a c1 value of about 100 pf at 29MHZ and each tube has 51pf of capacitance already, if added together thats over 200pf. How is this obstacle corrected? Manny KC4MNE _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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