[Amps] KPA1500 Efficiency vs. RF-Kit B26

[k9mk at flash.net]

Greetings,

    I assume we are comparing the same part "supplier" in each amp?
    One final versus two changes the beast.
    Back in the day I saw a number of "equivalent" parts that never
performed the same despite spec equivalency.

    The Yaesu Quadra uses Hi/Low voltage to try and keep the efficiency more
or less the same at lower power levels.
    I think the unknown here is the IMD performance.  I suspect the KPA's
termination is off of optimal for this reason.

YMMV

73  Mike K9MK


-----Original Message-----
From: Amps <amps-bounces at contesting.com> On Behalf Of Adrian
Sent: Monday, July 12, 2021 6:05 AM
To: jim at audiosystemsgroup.com; Amps group <amps at contesting.com>
Subject: Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26

Jim, Sorry see now you have stated "using my K3/P3 with the added SVGA
output" that answers below,, that you used that on both amps.


regards


Adrian Fewster

>
> Jim, when you did the IMD3 comparison between the 1.3KFA and the 
> KPA1500, was the same drive level and exact same txcr used to drive 
> both ?
>
>
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