>>? 36pF of Cout should pose no problem for a conventional tank -
>>Provided the anode current is max. and C-tune has a minimum of <10pF. //
>> It seems to me that those who propose using an L-match between the anode
>>and C-tune, fail to consider that the added L also decreases the anode
>>vhf-resonance. This could be problematic, depending on where the
>>RF-grounded screen (or grounded-grid in cath. driven config.) resonance
>>happens to fall.
>
>Yeah but Rich, 36pF in Cout of a tube is a large amount of capacitance.
? For a high-current tube, 36pF is not a problem on 10m, Jon. The
critical factor is the ratio of the anode-C's X-ohms (160) to RL-ohms.
.
>Depending on his output impedance, he may have a very difficult time
>matching with that much capacitance and still get a Q that is overly
>large. With the 4-1000A, there is no way to match its high impedance down
>to 50 Ohms and still get a good Q w/o doing this transformation.
>
? Wanna bet a large pizza with 4-toppings?
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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