[AMRadio] Dentron Clipperton on am?..

[Ron Youvan]

Jim WB5OXQ and Ella wrote:

> If a SB200 with 2 572B tubes can be used successfully on AM what about a
> Clippertron with 4 572B's?  I have tried mine on 40 today at 50 Watts and
> was told it sounded very good.  I did not increase power because more would
> get into a very expensive home theater system in the living room.  Since
> then I  put clip on chokes on all the speaker leads and tried it again up to
> 200 Watts and did not get in to the speakers with the stereo off (it had
> gotten into the speakers even while off).  I need to try again with the amp
> on.  The input cables to the amp are hdmi.  If the 4 572B's can do 1kW pep
> is is safe to assume 200 Watts carrier will allow enough headroom for AM?  I
> would think it would.  The Clipperton has 2 hV settings also.  a lower
> setting for cw and a higher one for ssb.  There is no mention of using the
> amp on AM at all.  At 200 watts carrier into the dummy load 5 minutes
> key down did not cause the plates to glow at all and the exhaust fan air
> barely warm.  Could the 572B's be better on AM than 3-500's?  BTW on low
> Voltage I see 1300 under load and 220 mA plate current when the Wattmeter
> shows 200 Watts out.  That should be about right figuring 70% efficiency.
> All 4 572B's are new.
> Any opinions greatly appreciated

   I am guessing that two 160T's (573Bs) can output 1.5 kW am (plate) modulated, I know much less 
about linear amplifiers.  Remember we (USA) are only allowed 375 Watts unmodulated carrier as our 
maximum.
-- 
    Ron  KA4INM - Endless Loop: n.        see Loop, Endless.
                  Loop, Endless: n.       see Endless Loop.
                  -- Random Shack Data Processing Dictionary