[Amps] SPE amplifiers

[Charles H]

I do not read any specs except the output power.
I will never repair my 2K myself.
I enjoy its results and smile while I get 'em first call.
73, Charly

> From: invertech at frontierisp.net.au
> To: jim.thom at telus.net
> Date: Tue, 10 Nov 2015 08:03:50 +1030
> Subject: Re: [Amps] Question about SPE 1.3K-FA amplifier
> CC: amps at contesting.com
> 
> 
> Hi Jim,
> 
> I fully concur with all of your points below.
> 
> Someone would have to have lost all of their good sense to even consider
> buying an amplifier without a complete set of detailed schematic diagrams
> and associated Parts List. It is the ultimate insult to their customers and
> the epitome of arrogance for a manufacturer not to do so.
> 
> To be considerate of other band users, one would have to operate the 1.3K-FA
> "linear" amplifier with considerable Po back-off below the amp's rated 1300
> Watts PEP that's well clear of its 1 dB power compression point and
> saturated Po to yield any half-decent / semi-respectable IMD figures.
> 
> Leigh
> VK5KLT
> 
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Jim Thomson
> Sent: Monday, 9 November 2015 9:45 PM
> To: amps at contesting.com
> Subject: [Amps] Question about SPE 1.3K-FA amplifier
> 
> Date: Sun, 8 Nov 2015 06:59:35 -0700
> From: Richard Solomon <dickw1ksz at gmail.com>
> To: Amps group <amps at contesting.com>
> Subject: Re: [Amps] Question about SPE 1.3K-FA amplifier
> 
> 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.
> 
> ##  This is almost as good as an arrl report for basic stuff. 
> Their test method seems a bit flawed imo.  You can't test
> any linear amp, by stuffing a 2 tone signal into the mic jack.
> Unless the xcvr is running in class A.  In this case, the icom 7800
> used for the test, afaik, does not run class A. 
> 
> ##  If SPE cant / doesn't want to provide a schematic for this amp,
> or any of their other amps, I would not touch it, or buy one. 
> 
> ##  at least they provide imd info for imd3 to imd11.
> 
> ##  The imd test is further flawed.... since they only ran the test at 1000
> w pep out.  The harmonic test was run at 1300w out.  They are also stated in
> db below pep, and not db below one tone.  So u have to subtract 6 db from
> all their tables. IE: their IMD3 on 7.150 mhz is a lousy -27.6 db.  (and a
> lousy -24.8 db on 160m and also 10m).  Again, re-run the test at 1300w pep
> out, and imd results will be a helluva lot worse.
> 
> ##  They need to re-run the test, this time using TWO xcvrs, each feeding a
> cxr into a hybrid etc, then into the input of the amp.....and do it with the
> amp running 1.3 kw pep out.     
> 
> Jim   VE7RF
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