[Amps] Time to back up- SS and autotune

[donroden at hiwaay.net]

The Nautel, GatesAir, and BE all use lumped constant combiners.
Don W4DNR



Quoting Steve Thompson <g8gsq72 at gmail.com>:

> I believe, in transmitters of this type, that the modules aren't  
> combined in the same way we're used to in the likes of Quadra, PW-1  
> or SPE type amps - in the AM txs I think it's more like the module  
> outputs are connected in series akin to stacking PSUs to get a  
> higher voltage.
>
> Steve
>
>> That is becoming common practice. Modular transmitters. Just
>> plug in the modules you want to get the power you want and I
>> believe they have been hot swappable for some time. .
>>
>>
>> I had never thought of switching the modules in and out, but at
>> 250 W per step it'd be a pretty smooth transition, albeit they
>> may do some filtering. I wonder about switching pulses?
>>
>>
>> 73
>>
>> Roger (K8RI)
>>
>> On 12/17/2016 9:36 AM, Bill Turner wrote:
>>
>> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>>
>> On Sat, 17 Dec 2016 05:37:07 -0500, K8RI wrote:
>>
>> it's "relatively easy" to parallel properly designed circuits
>> through properly designed combiners for the power to be run
>> that give excellent linearity, rugged with minimal protective
>> circuitry, and good efficiency at a reasonable heat load that
>> is easy to get rid of.   (QUIET!)
>>
>> REPLY:
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DonR