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Author Topic: New Legal Limit SS Amplifier coming soon  (Read 16377 times)
KD8MJR
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« on: November 25, 2015, 02:01:18 PM »

http://www.dedicatedrf.com/

Looks interesting.

73s
Rob
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NK7Z
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« Reply #1 on: November 25, 2015, 02:18:38 PM »

http://www.dedicatedrf.com/

Looks interesting.

73s
Rob

1500W at what Duty Cycle?  I did not see that in the specs...
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Thanks,
Dave
Amateur Radio: RFI help, Reviews, Setup information, and more...
https://www.nk7z.net
KD8MJR
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« Reply #2 on: November 25, 2015, 02:37:29 PM »

I have no idea, I have not seen enough info on it yet.    I Don't know of anything SS that will get a thumbs up from Zenki on IMD Grin

But this amp should at least get:







« Last Edit: November 25, 2015, 02:49:11 PM by KD8MJR » Logged

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KM3F
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« Reply #3 on: November 25, 2015, 04:53:44 PM »

Their website has the specs for IMD measured at 39.5 at 1500 watts.
Nothing outstanding.
Good luck.
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KM1H
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« Reply #4 on: November 25, 2015, 05:24:53 PM »

Quote
Their website has the specs for IMD measured at 39.5 at 1500 watts.
Nothing outstanding.
Good luck.

Say What?

If that is for IMD3 it is excellent for an SS amp and right with the better tube amps and far better than most SS exciters.
Dan Simmonds was a past owner of Command Technology and also owns AN Wireless which is a well known tower company.
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KZ1X
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« Reply #5 on: November 26, 2015, 06:31:04 AM »

The market for such an amp is pretty crowded.  Does no one know about this amp?

http://www.dishtronix.com/prometheus.html

There's a certain minimum price these amps need to sell at to make a business.
Perfectly nice tube amps sell for around $6000, how much more will people spend?

The cohort of hams with the needed level of disposable income centers around age 65 or so.

  • What is the average age of active hams who still need amplifiers?
    If you rely on air as a cooling medium, as this amp appears to, is that a market problem?
    (Companies like Chilldyne now have commercial negative-pressure liquid cooling systems. No leaks possible.)
    Are people abandoning their tube based amps, or are there new customers?
    How many people have antennas ... and neighbors ... that can handle the power?
    Are most stations of the future going to be remoted?
    What happens when the next generation of ham transmitters becomes a large power-DAC? 
    Does the PA get sampled and the drive pre-corrected for linearity?
    Will this new amp and similar ones be compatible with that next generation?
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N3QE
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« Reply #6 on: November 26, 2015, 06:40:33 AM »

Perfectly nice tube amps sell for around $6000, how much more will people spend?

Or, you can spend an awful lot less than that for a nice USED legal limit tube amp.

With any decent tube amp having a lifetime measured in a good chunk of a century, this hurts sales opportunity for newer generations of amps.

I think there is a well-defined solid state amp market segment, folks who use them mobile, or who think they need truly instant (not even fractional second auto-tune is good enough for them) QSY. These folks may already have a less-than-legal-limit solid state amp, and the lifetime of a solid state amp is not as long as a tube amp, so they may go legal limit solid state when they upgrade, and upgrade more often.

At the very high end there is a segment that will buy a solid state amp simply because it has YaeComWood brand name on it and matches the color and trim scheme of their rig.
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HB9PJT
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« Reply #7 on: November 26, 2015, 06:42:57 AM »

No tuner no antenna switch no chance against an Expert PA.

73, Peter - HB9PJT
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KM1H
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« Reply #8 on: November 26, 2015, 07:21:22 AM »

Quote
With any decent tube amp having a lifetime measured in a good chunk of a century, this hurts sales opportunity for newer generations of amps.

There are many good choices there and just a few are:

Any Alpha 8874 tube amp with bad tubes for well under $1K and convert to a pair of 3CX800A7's for about the same again. Pretty simple to do if youre a bit handy and 1500W all day long

Dentron MLA-2500, under $500 with bad tubes, some sheet metal work and a single 3CX800 for the same power without stressing anything plus a clean signal unlike the IMD garbage Russian GI7B's. A good solid 1200W.

Dentron Clipperton L, about $400 with questionable tubes, etc. A little TLC, a few simple mods, and 4 of the new RFP 572B's results in a reliable 1200W.

Ameritron AL-1200 with any of the 3 dead and different 3CX1200's used over the decades; Ive seen them under $1000 often. Get the complete AL-1500 sub chassis kit from Ameritron and plug in a new, reliable and under $700, Chinese 8877; the PS and RF section are the same across the large series so the AL-82 conversion is another option.

Amp Supply LK-500ZC as built. Rugged, reliable, easy to work on and common available parts, around $1200 for a nice one and change the 30 year old filter caps for another $100. Mine still has the original Eimac 3-500Z's. The ZB model is almost as good and can be upgraded. 1200-1500W.  Stay away from the no tune unless you are a single mode op and dont QSY much.

There are other choices of course, some with built in problems, others without 160M, discontinued parts, etc. It all depends upon ability to get them going again.

For sort of entry level the Heath SB-220/221/HL-2200 and SB-1000 are low cost options in the 1200 and 700W category respectively

Carl
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KH6AQ
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« Reply #9 on: November 26, 2015, 08:11:29 AM »

The specs don't show a load VSWR limit or the VSWR it can work into an still deliver 1500 watts.
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N9AOP
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« Reply #10 on: November 26, 2015, 09:35:29 AM »

If this amp is really any good and being made in the US of A it should sell for about 5-6 grand. 
Art
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W6GX
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« Reply #11 on: November 26, 2015, 10:33:19 AM »

The list price is $6,850.  It has remote control capability.  It's quite heavy at 43 lbs. for amp having a switching power supply.  So my guess the build quality is first rate.

73,
Jonathan W6GX
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KD8MJR
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« Reply #12 on: November 26, 2015, 11:25:56 AM »

The market for such an amp is pretty crowded.  Does no one know about this amp?

The market for full legal limit SS amps is crowded?
Am I missing something here.

Right now I know of the Expert SPE 2K-FA and now this new one that can do 1500W
The Prometheus is in a price range that makes it unobtanium for 99.9% of people and the Tokyo Hy-Power line is no longer around.   Maybe there is a model I missed.

73
Rob
« Last Edit: November 26, 2015, 03:20:21 PM by KD8MJR » Logged

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W8JX
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« Reply #13 on: November 26, 2015, 01:46:06 PM »


The market for full legal limit SS amps is crowded?
Am I missing something here.


I think it should be that "market for a 7k SS amp is limited". A lot of nice tube amps can be had for same or less.
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Ham since 1969....  Old School 20wpm REAL Extra Class..
W1QJ
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« Reply #14 on: November 26, 2015, 09:49:32 PM »

Their dual 8877 never came about
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