[Amps] CB amp directly coupled via cap to antenna

[TexasRF at aol.com]

With the shunt C from tube anode to ground there would not be a case for 50 
 +j0 right at the tube.
 
Also, with tube in the discussion the plate load impedance would be a bit  
higher than 50 ohms anyway.
 
Agreed?
 
Now, your vertical idea has some interesting possibilities: By choosing the 
 length carefully, one can set the R of the vertical to match the plate 
load  impedance. You are still left with the need to reconcile the reactance 
that  remains. Since the tube will be capacitive, perhaps there would be a 
happy  coincidence of antenna R +j to handle the match, maybe somewhere around 
3/4 wave  length?. If not, careful selection of the coupling C would surely 
make it all  possible.
 
73,
Gerald K5GW
 
 
 
 
 
In a message dated 4/8/2010 10:06:13 A.M. Central Daylight Time,  
dezrat1242 at yahoo.com writes:

ORIGINAL  MESSAGE:

On Thu, 8 Apr 2010 08:29:25 EDT, TexasRF at aol.com  wrote:

>
>We all know there HAS to be some kind of matching to  get significant 
power  
>transfer.

REPLY:

If the  antenna impedance is the same or nearly so as the plate load
impedance, no  matching network is necessary. A half wave vertical has
very high impedance  and might be just the ticket. Pun intended.

73, Bill  W6WRT
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