My experience is that c. 3500Vdc is needed on ssb to produce the needed
ZSAC (75mA) with 0V bias.
>I have installed a single 4-400A in my Swan Mark 1 for
>testing. I am running it Zero Bias and Grounded
>Grid(it's being used as a triode). It has 2500vdc
>plate voltage and a max of about 400ma with 100 watts
>of drive. I am curious as to others experiences doing
>this with the 4-400A. The plate gets red in SSB and
>CW with 100 watts of drive as I expected it should. I
>back the drive down but even in SSB the plate still
>gets red.
>
>73,
>Bill
>
>Resting current is about 40ma. I tested it with about
>100 watts of drive
>
>=====
>Bill Smith KO4NR
>
>__________________________________________________
>Do you Yahoo!?
>U2 on LAUNCH - Exclusive greatest hits videos
>http://launch.yahoo.com/u2
>_______________________________________________
>Amps mailing list
>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
>
- Rich..., 805.386.3734, www.vcnet.com/measures.
|