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Author Topic: 1st Amp: Elecraft KPA-500 or Acom a600s ?  (Read 6338 times)
N6YFM
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Posts: 131




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« on: February 09, 2016, 04:09:58 PM »

   

    For a first amplifier, I have been looking for auto-tuning, medium power range, low fan noise.
    This seems to limit the choices to solid-state amps like Elecraft KPA-500 and Acom a600s.
    They both look like fine choices, similar specs, and both having USA service available if needed.
    Are there others in the same class?

    How would YOU choose among these? And why?

    Thanks for your guidance,

    Neal
     

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N9AOP
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Posts: 354




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« Reply #1 on: February 09, 2016, 06:29:00 PM »

I have a KPA500 and have had it for over a year with no trouble.  I put it together myself for $1900 an could not see the extra $ for the Acom with only a few more watts.  I also have an Acom 1000 and it is also an excellent piece of equipment.  Which ever you choose, you will be satisfied.
Art
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KD8TUT
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Posts: 356




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« Reply #2 on: February 09, 2016, 09:50:58 PM »

   

    For a first amplifier, I have been looking for auto-tuning, medium power range, low fan noise.
    This seems to limit the choices to solid-state amps like Elecraft KPA-500 and Acom a600s.
    They both look like fine choices, similar specs, and both having USA service available if needed.
    Are there others in the same class?

    How would YOU choose among these? And why?

    Thanks for your guidance,

    Neal
     



I've got no experience with the a600s. But did look at a number of amps before pulling the trigger.

The amp is small, pretty quiet, and built like a tank. It integrates with my KAT500 tuner and ANAN 100D perfectly.

So the only thing I can say is the amp met my expectations. I'm not really very "religious" about my equipment choices.
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K6JH
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Posts: 306




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« Reply #3 on: February 10, 2016, 05:34:17 PM »

I don't have personal experience with any of these, but both your alternatives are more expensive than the Ameritron ALS-600 at around $1350. KPA-500 = $2100-2300, and the A600S = $2800. None have an integrated tuner.

Is this a case of you get what you pay for? I've heard stories of ALS-600's blowing transistors under high SWR conditions where the protection doesn't protect fast enough (yes, operator error but...). And if you want rig controlled bandswitching it's a $120 option.

I don't hear about the Elecraft or Acom breaking, but maybe that's because there are many more Ameritrons around. I think if I was in the market the KPA-500 is in the sweet spot. Price, performance, US company, etc.
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73
Jim K6JH
N4ATS
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Posts: 1075




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« Reply #4 on: February 12, 2016, 12:21:30 PM »

Yaesu FL-7000 is a really great amp for the price. Bullet proof as well. Easy to maintain.   www.N4ATS.com
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OK1RP
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Posts: 152




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« Reply #5 on: March 01, 2016, 02:16:43 PM »

Hi

if you are CW op using QSK then forget Acom...
No QSK usable at higher speed implemented unfortunately.

Elecraft KPA-500 is using PIN diodes for T/R fast switching so it is good solution.
The only complain from my side is the out power - 500W only Wink

73 - Petr, OK1RP
http://ok1rp.blogspot.com
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KK4YDR
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Posts: 320




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« Reply #6 on: March 01, 2016, 10:33:52 PM »

I do not own ACOM equipment but one gripe I have seen more than once is the repair parts are a little hard to come by from time to time since they seem to be of deep European origin.
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KB6HRT
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Posts: 239




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« Reply #7 on: March 02, 2016, 10:12:40 AM »

Have not used eather of the products but did research them before buying the ALS600s with a remote, it is very quite, have since brought the ALS1300 double the power, but a lot more noise from its fan's, so mostly use it with head phones, Also have the Yeasu VL-1000 don't have to use headphones when I am using the VL-1000 because the fans which there are 2 are larger an turn slower  making less noise. ALS600s $1300.00  ALS1300s $ 2400.00  VL1000 $4200 as you see, you get what you pay for, there all good amplifers when on the air!  The ALS600s does not have a fan in its power supply but runs cool none is needed, the ALS600 uses a fan on its linerar power supply so more noise like the ALS1300...........73s..........kb6hrt
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KK4YDR
Member

Posts: 320




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« Reply #8 on: March 02, 2016, 11:44:59 AM »

Have not used eather of the products but did research them before buying the ALS600s with a remote, it is very quite, have since brought the ALS1300 double the power, but a lot more noise from its fan's, so mostly use it with head phones, Also have the Yeasu VL-1000 don't have to use headphones when I am using the VL-1000 because the fans which there are 2 are larger an turn slower  making less noise. ALS600s $1300.00  ALS1300s $ 2400.00  VL1000 $4200 as you see, you get what you pay for, there all good amplifers when on the air!  The ALS600s does not have a fan in its power supply but runs cool none is needed, the ALS600 uses a fan on its linerar power supply so more noise like the ALS1300...........73s..........kb6hrt

My Al-800H is pretty loud too.
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KD8MJR
Member

Posts: 4726




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« Reply #9 on: March 02, 2016, 01:31:30 PM »

Yaesu FL-7000 is a really great amp for the price. Bullet proof as well. Easy to maintain.   www.N4ATS.com

Also the most silent amp i have ever seen / heard.
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