One S-unit increase is doubling the Rx signal V. Since P = E^2 /R. 2^2
= 4x, 4x = 400%.
>That is 300% increase in power for 1 s-unit. x4-1
>It may be better to increase efficiency to reduce the dissipation more that
>increase power output.
>
>73
>Bill wa4lav
>
>
>At 06:29 PM 4/16/2003 -0700, you wrote:
>
>
>> >[Encoded using ?binary?]
>> >
>> >I have been wondering about the possibilities of improving the
>> >efficiency of the SB220 in cw mode. Looking at the AL-82 I see
>> >they use two zeners in series and short one out to deal with the
>> >necessary different bias. The two 220's I have have had the
>> >zeners replaced with diode strings. Any other ideas how to
>> >accomplish this?
>>
>>? The ZSAC with a SB-220 is already ok in the CW mode since the anode
>>current decreases with lower anode V. Decreasing ZSAC further would
>>result in increased input SWR. Even if RF-out were increased 40%, no one
>>could see the difference since it takes a 400% increase in P to give a
>>one S-unit increase on the Rx end.
>> >
>> >cheers, Paul - VA7NT ex VE7CQK - email: paule@sfu.ca
>> >"Those who hear not the music. . . think the dancers mad."
>> >_______________________________________________
>> >Amps mailing list
>> >Amps@contesting.com
>> >http://lists.contesting.com/mailman/listinfo/amps
>> >
>>
>>
>>- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
>>www.vcnet.com/measures.
>>end
>>
>>
>>_______________________________________________
>>Amps mailing list
>>Amps@contesting.com
>>http://lists.contesting.com/mailman/listinfo/amps
>
>
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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