[Amps] Is an AMP worthwhile.

Joe nss at mwt.net
Mon Mar 7 23:26:27 EST 2022


YUP YUP YUP.

jOE wb9sbd / w9et

On 3/7/2022 8:51 PM, Jim W7RY wrote:
> 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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