[Top] [All Lists]

Re: [Amps] Question about SPE 1.3K-FA amplifier

To: "Amps group" <>
Subject: Re: [Amps] Question about SPE 1.3K-FA amplifier
From: "Val" <>
Date: Sun, 8 Nov 2015 13:45:58 +0200
List-post: <">>
Most probably it is just a matter of an incorrect expression and a single device containing a pair of transistors is used.

73, Val LZ1VB

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.


Does anyone know?

Educated guesses welcome.

73, Bill W6WRT

Amps mailing list

Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>