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Author Topic: Ameritron ALS-600 vs. Tokyo HL-550FX  (Read 46365 times)
AI4HO
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Posts: 79




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« Reply #45 on: February 04, 2011, 08:50:11 PM »

I have had my Ameritron ALS-600 non switching power supply for almost 2 years now, for about the first year my amp would come on at 0730 EST, and would go off at midnight, 0100 when I went to bed.  Then, I would use the amp for almost every Q I made, this thing just goes and goes, yes, it is sensitive to high SWR as most solid state amps are.  I have since gone to resonate antennas.  I also have an AL-811H tube amp, that is a pig, I have used and abused this amp unintentionally of course, and will go the distance @ 800 watts, the ALS-600 will continously put out 600 watts all day long.  Say what you will about MFJ/Ameritron, I am happy with my 2 Ameritrons.  I hope to one day to be rich enough to be able to afford the ALS-1300, if I'm relly lucky and hit the lotto would hope to get any one of the THP amps.

These days, I typically run the amp for an hour in  the morning from 0800-0900 EST, then after our morning net (Treasure Coasters Net....7.153 Advance and Extra class licensees only....sorry thems the rules).  After our net I will usually turn the amp off, unless I QSY to 20 or some other band, on those rare days when I have nothing to do or can't do much of anything.  Once the amp goes off in the morning it doesn't usually come back on until the afternoon 1400-1500 EST I'll play radio for a couple hours in the afternoon, then it goes off again, this time until the next morning, if there is that rare evening and 40 meters is hopping I may turn the amp on, but that is a rare event.

My rig of choice for the ALS-600 is my new FT-450AT that I went to AES Orlando to pick up this past December.  I have 3 different resonate antennas to choose from my half wave 4- meter dipole, a Mosley TA-33 classic, and my GAP Challenger vertical, all good antennas, that my ALS-600 likes and I only run about 45 watts to get full output, don't necessarily run 45 watts, usually only 35 to get about 500 watts.  Can't beat the ALS-600, for price, especially if you get the non switching power supply, my own humble opinion ya don't really need the switcher PS, unless you need the switching supply, its actually about $200-$300 les if you go with the standard PS, I don't remember off hand, maybe less than those numbers, but I think I only paid $either $1199 or $1299 for my 600.  Just my thoughts from a very content ALS-600 user.

73 de Mark
W3LZK
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AI4HO
Member

Posts: 79




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« Reply #46 on: February 04, 2011, 09:35:34 PM »

I meant to say 40 meter half wave dipole, some how the 0 got chopped off, guess its time to clean the key board on my lap top when the keys start sticking :-}

mark
W3LZK
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KH6AQ
Member

Posts: 7794




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« Reply #47 on: February 08, 2011, 11:53:05 AM »

The HL-550FX has arrived at Ham Radio Outlet

THP HL-550FX at HRO: $2950.
Power: 550 W SSB, 550 W CW, 250 W RTTY
160-6 meters
Transistor: Four VRF150 (160 volt version of the MRF150)


ALS-600 at HRO: $1280.
Power: 600 W SSB, 500 W CW, 350 watts RTTY
160-10 meters
Transistor: Four MRF150 (125 volt)

Both amps use four MRF/VRF 150 type MOSFETs. The total specified power dissipation of the four MOSFETs is 1200 W (25 deg C cold plate).
« Last Edit: February 08, 2011, 06:13:25 PM by WX7G » Logged
KD8MJR
Member

Posts: 5536




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« Reply #48 on: June 18, 2012, 10:53:50 AM »

The HL-550FX has arrived at Ham Radio Outlet

THP HL-550FX at HRO: $2950.
Power: 550 W SSB, 550 W CW, 250 W RTTY
160-6 meters
Transistor: Four VRF150 (160 volt version of the MRF150)


ALS-600 at HRO: $1280.
Power: 600 W SSB, 500 W CW, 350 watts RTTY
160-10 meters
Transistor: Four MRF150 (125 volt)

Both amps use four MRF/VRF 150 type MOSFETs. The total specified power dissipation of the four MOSFETs is 1200 W (25 deg C cold plate).

Just came across this old post and wondered why the Op posted incorrect information??
The Tokyo HY-power HL-550 uses four THP 2933 Mosfets with 1200 Watt max power, so why did the OP say it uses VRF150's.  The OP then states that the ALS-600 use 4 x MRF150
with 1200 watts dissipation and that is also not true it is 600 Watts total, 150 Watts each.
I am just posting this to correct the misinformation that has been posted.
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“A lie can travel half way around the world while the truth is putting on its shoes.”  (Mark Twain)
KH6AQ
Member

Posts: 7794




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« Reply #49 on: June 18, 2012, 11:29:50 AM »

Take a look at the HRO website and it says the HL-550FX uses four VX150 transistors.

http://www.hamradio.com/detail.cfm?pid=H0-010997



My power analysis is based on the MRF150 and VRF150 datasheets. The MRF150 is indeed rated for 300 watts power dissipation.

http://www.hamradio.com/detail.cfm?pid=H0-010997
------------------------------------------------------------------------------------------------------------------------------------------

But, the THP website shows the HL-550FX using four THP2933 transistors and not VR150 transistors. The THP2933 is twice the transistor the VR150 and MRF150. By the device dissipation, Thermal resistance, and I/O capacitances the die is twice the size.
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WB4TJH
Member

Posts: 213




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« Reply #50 on: August 27, 2012, 07:07:50 AM »

Avoid the Ameritron switching supply. Several people I know have had continuing problems with theirs. Get the heavier transformer power supply instead.
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