[ARC5] Shunt vs. Parallel

[Jim Hill]

Can you really modulate an arc-5 100%?  Years ago, I built an 
external plate modulator using P-P 6146's.  I watched the envelope, 
and as I increased the modulation level, I started having downward 
modulation (and, I assumed much FMing).  I decided it was a bad idea, 
and about that time bought a Morrow MB560A, which was much better for 
mobile operations.  Thinking back, I wonder if I had a weak oscillator tube.
Jim


At 04:19 PM 7/15/2017, AKLDGUY . wrote:
>Why was there a change in the AN/ARC-5 to shunt feed to the 1625 plates?
>It meant one extra component, the choke. I've never in 50 years seen an
>explanation for it.
>
>73 de Neil ZL1ANM
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