[Amps] re dishtronix amp

Roger sub1 at rogerhalstead.com
Tue Jan 22 13:32:19 EST 2008




>Wow! Talk about an expensive overpriced amplifier. Only a millionaire can 
>afford that one.   Fern

When you look at the prices of the other amps, 1.5Kfx = $3,300, 2.5 Kfx = 
$5,600 plus auto tuner = $1,150
you get $4450 for about 1100 PEP or $6750 for the legal limit.  The SPE ran 
about the same with the internal tuner, but they are now available only from 
the manufacturer rather than Array solutions and the manufacturer takes care 
of warranty work.

Although twice the price of the 2.5Kfx setup IF they live up to the 
advertizing the price is still in the ball park. Solid stte at this 
powerlevel is expensive and so it all the protection that has to be built 
in. Excess capacity for protection is even more expensive. Another thing to 
take into consideration is the auto tuners tend be be relatively narrow 
range such as matching 3:1 and under. Those amps need to work into an SWR of 
under 1.3:1 or they'll be kicking out due to high reflected power so keeping 
the SWR low is essential (and using the ALC) .

I have eperience only with the 1.5Kfx (without the auto tuner which comes 
later) and like it very much.  It runs almost as much power out as my old 
Henry 2K4 and does it from 160 through 6-meters. I'm driving it with a 
little Icom IC-7000 mobile rig which is connected to my computer using Ham 
Radio Deluxe as a control program.  It's quiet and runs cool with instant 
auto band change. I just plug everything into the Icom computer interface 
and set the switches for "Icom".

Yes, I'd like a little more power, but I wanted the 6-meter capability which 
the 2.5Kfx doesn't have.
No matter how you look at, it the price of even the mid range SS amps with 
auto tuner is approaching that of an Alpha tube amp.

73

Roger (K8RI)

Have a look at    http://www.dishtronix.com/    73 Dave N3HE

----- Original Message ----- 
From: "Björn Mohr" <bm at broadcast.se>
To: <amps at contesting.com>
Sent: Tuesday, January 22, 2008 9:52 AM
Subject: [Amps] Automatic amps


Hi gang,

I am considering buying a solid state amp with automatic band switching
mainly for remote use. I have so far identified the SLA Expert 1K and Tokyo

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