Smallest Dual-6146 HF Transmitter?

[kd4e]

The modulator we have here for the project is the same
design as those used with the Valiant and the Viking,
dual 807's delivering about 50 watts via a Stancor
A-3893 modulation transformer.

I am not sure of the efficiency of the audio side -
the modulator - between its input and output ... so
long as it delivers at least 50W across the dual 6146
plates I will have high-level AM plate modulation!

The planned input power of the dual 6146's would be
about 100 watts Class-C.

Once I find a way to get the pieces together then it
should make for a solid signal with real solid modulation
and a carrier to eliminate noise in-between voice peaks -
sorta like listening to someone in a quiet living room.

Aaaaaaahhhhh.  Nothing like it.  :-)

> It takes 50% of the final amplifier input power to get
> 100% modulation.  Considering that the modulator is
> definitely not 100% efficient the input to the
> modulator output stage will be more than 50% of the
> final amplifier stage.  But, the actual power required
> to produce 100% modulation is 50% of the input power
> to the final amplifier stage.
> 
> For example, the audio power required to modulate a
> 100 watt input transmitter is 50 watts.  If the
> modulator has an efficiency of 66% then it will take
> just over 75 watts input to the final modulator stage.
>  But the actual power needed to modulate a class "C"
> amplifier to 100% modulation is 50% of the input
> power.
> 
> Glen, K9STH



-- 

Thanks! & 73, doc, KD4E
Personal: http://bibleseven.com/kd4e.html

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html