[Amps] Question about SPE 1.3K-FA amplifier

[Joe Subich, W4TV]

 > Curious as to what folks think about the results.

With third order IMD of only -32 dB PEP at *1000 W* this is
a seriously dirty amplifier.  There is no way it should be
advertised as a 1300 W amplifier as operating it at even
1000W is a good way to be unpopular with one's neighbors.

73,

   ... Joe, W4TV


On 11/8/2015 8:59 AM, Richard Solomon wrote:
> Here is a link to what looks like the Test Report for
> FCC Type Acceptance.
>
> https://fccid.io/pdf.php?id=2443307
>
> Curious as to what folks think about the results.
>
> 73, Dick, W1KSZ
>
> On Fri, Nov 6, 2015 at 8:25 PM, Bill Turner <dezrat at outlook.com> wrote:
>
>> I notice the SPE 1.3K-FA amplifier is using a single LDMOS transistor
>> to achieve a peak of about 1500 watts output. I am wondering how they
>> do this and stay linear over the full 360 degree RF cycle. Normally
>> with a single-ended amplifier you have to either use a resonant tank
>> circuit to provide the "flywheel" effect, or run it class A. Solid
>> state amps normally use two devices in push pull but this amp does it
>> with only one.
>>
>> Since SPE apparently does not provide schematics or service manuals, I
>> am left curious as to how they achieve linearity.
>>
>> Website:  http://www.spetlc.com/en/products/expert-13k-fa-uk.html
>>
>> Does anyone know?
>>
>> Educated guesses welcome.
>>
>> 73, Bill W6WRT
>>
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>