>
>
>Jon Ogden wrote:
>
>> Jim Thomson wrote:
>>
>> >> > The idling
>> >> >power throws a wrench ito your simplistic peak diss x duty cycle theory.
>> >> >
>> >> ? Not for those who do not use Lock to Talk.
>> >
>> >****** Some fellows can't run Vox. I have friends who have noisy young
kids,
>> >barking dogs etc, that would wreak havoc on band. Vox would get tripped
>while
>> >switching ants, etc. Some just prefer ptt/footswitch. All the ops at
>VE7ZZZ
>> >MM contest stn use footswitches. They are actually faster than vox, if u
>know
>> >what u are doing.
>>
>> Rich belives everyone should operate like he does.
>>
>
>##### The next guy who asks me abt 4-1000's in gg, will be told to get a
>8160 for>full suds.
? 8160 good. drive it with a SB-220, 8kv at 5a. . Makes way more
sense than a 3cx3000a7. Good handles too.
......
>Rich, re dentron L loading, u state if amp is tuned to 800Ma of plate I,
>that on ssb, meter will bounce up to only 300Ma??
? look at the peak current from an anode supply with an oscilloscope and
you will see that meters show only about 1/3 of the real current on SSB.
Mo' mic. gain is not necessarily mo' betta. .
>I tune my L4B to 800 Ma. Book
>sez it should kick up to 400Ma (no clipping) With clipping, it kicks up to
600
>Ma.
? I know a guy who tunes his SB-200 at 450mA. He talks it up to 500mA
when he's chasing DX. .
>
>It helps meter out if the starting point is 240-260Ma !
? Eimac recommends 75mA per tube ZSAC. .
> Throw in some meter
>overshoot to boot. How u ever got 14kw out of a 8171 with just a simple
>65lb Dahl Hypersil xfmr is beyond me?
? it's spelt Hipersil. The transformer had a 0.079-ohm 240v primary.
After I installed the #4 Cu wire to the breaker box, there was little
sag. On an "ahhhh", anode V was just under 8k. . The 8171 cathode is
capable of 12a of peak emission, so there is plenty.
>You must be assuming ssb with no clipping,
? no clipping and minimal mic. gain. "Speak softly and carry a big
stick". - TR. It is my opinion that CB-style operation may be ok on
Channel 6, but it doeth sucketh on a ham band. . When I hear a guy with
wacko-banana processing, it tells me that he has an inadequate amplifier.
>and alc meter bouncing 1/16" every 4 secs. Ever operated the CQ WW ?
? no. Using a tetrode with handles during a contest is not kosher.
>Fellows were
>burning up stock SB-220 xfmrs back in 74. Back then, the replacement cost was
>$35.00 !
? And the SB-220. was producing less PEP because of CB-style operation.
>
>-BTW, I tried out some footswitch operation,much faster rls than vox. If u
>set up vox delay for that fast a rls,it would be dropping out between
syllables.
? Dropping out between syllables is too fast for me. At a minimum, I
adjust the vox to drop between sentences. With the exception of
emergencies, I do not continue to converse with anyone who does not pause
between sentences. My pet peeve is a guy who asks me a question, does
not pause, and goes into a monologue. ..
cheers, .Jim
- Rich..., 805.386.3734, www.vcnet.com/measures.
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