[Amps] Is an AMP worthwhile.

Jim W7RY jimw7ry at gmail.com
Mon Mar 7 21:51:00 EST 2022


Joe

Is this the amplifier you removed the tank circuit and replaced with a 
roller coil?

And increased the plate voltage as well?

73, Jim W7RY


On 3/7/2022 5:13 PM, Joe wrote:
> I have been for quite some time now fighting with this Frankenstein of 
> an AMP trying to get it to work correctly.
> It works making power and LOTS of it, But the Load Cap, is all funky. 
> When measured with a VNA the amount of "C" varies as expected. And in 
> the right amounts.
>
> But in use, it does little to nothing at all.  fully meshed fully 
> un-meshed almost no difference at all. at 1500 watts out the min and 
> max "C" on the load cap changes the output maybe 50 watts thats all. 
> Crazy!
>
> So taking a break on this AMP so i don't loose what hair I still have, 
> by the way if you have any ideas what may be happening please let me 
> know!
>
> But I was thinking how much difference does an AMP actually make in a 
> contest.
>
> And thinking strictly mathwise what 10 to 15 db stronger. so only 2 to 
> 3 S units? seems not like a major deal.
>
> BUT I took from 3830 the top ten from Multi single High and low power, 
> in this past weekends contest
>
> and single op high and low powers.
>
> took out the so2r and others similar.
>
> And the Multi single high power almost made twice as many contacts as 
> the low power! WOW!
>
> and in the single op High vs low. made also almost twice as many Q's
>
> As one that has never contested with an amp,
>
> does it really make it that much better!?
>
> Don't forget about the amp if you have any ideas?
>
> Joe WB9SBD / W9ET
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