[Johnson] Viking Desk Modulation

[Todd, KA1KAQ]

What are you driving it with Tom?

On Jan 14, 2008 4:27 PM, Tom Elmore <tom at telmore.com> wrote:
> Hello All, I recently inherited a Viking Desk Kilowatt from a SK friend of mine. I returned it to service after almost a year. It seems to make output power 275 low power and +700 watts high power. When looking at the modulation on a scope though it appears to be only modulating about 80% in either low or high power.
> I have changed out the 810's and 4-400 and see little improvement. I do notice that when I approach 80% modulation on the scope that both positive and negative peaks appear to curl slightly instead of going flat like I thought I would see with clipping.  Anyone have any thoughts or experience on where to look next ?
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> -Tom / KA1NVZ
> Anchorage, Alaska
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