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Texas Star Linears on the amateur bands?
- Thread starter TonyV225
- Start date
A CLEAN & PROPERLY FILTERED amplifier cost much more than a DIRTY amplifier that has no filtering.$4000 is a pretty good deal because my ICOM PW-1 sells for $5000 & I think it's worth every one of those dollars since all I do is turn it on & it does everything else for me no matter what band or mode I'm on.
RM Italy does make a fair priced multi-band amplifier. Automatic band selection and good filtering as well. Just don't hit them too hard with high drive or try to"Volt" the unit. Smoke will happen.
http://www.hyelectronics.com/HLA-300-W_-FANS/productinfo/HLA-300V/
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Look at the cost of the FCC Approved Amplifiers that RM Italy produces & add up what a 1 Kilowatt amplifier from them would cost if it had the filters so that it also had FCC approval & then add in the cost of it having an internal tuner,automatic band switching & a built in AC Power Supply & all of the protection circuits that other amplifiers in this class have.It would be quiet expensive & I doubt we will ever see such an amplifier from RM Italy because of those costs.
Right, this is a mobile unit as is the Texas Star units quoted in this thread. It does have filtering built to the amp. Where as the T.S. has none. I also doubt that the T.S. is FCC approved. It takes about 4 minutes with a soldering iron to get it into 11meterband.
... not to 'jack the thread, but, no matter what RMI says, NONE of their amps are certificated.
To the contrary: http://www.dnjradio.com//product_info.php?cPath=70&products_id=398
And FCC ID: 2ACTRHLA305V
I know Frank personally, he is not stupid and he would not post information like this if it wasn't true. He is also an Amateur Radio Operator. I have dealt with him in a business situation and found him trustworthy and generous.
I'll see your "to the contrary" and raise you..
the number "ACTRHLA305V" only means the paperwork has been submitted to the FCC by a third party laboratory.
(MET Laboratories, Inc.
914 W. Patapsco Avenue
Baltimore, MD 21230-3432)
in fact, if you research the actual number on the FCC site you will find this info:
Applications are submitted for FCC ID and Grant requests.
FCC IDENTIFIER: 2ACTRHLA305V
Name of Grantee: RM COSTRUZIONI ELETTRONICHE Snc di Marchioni Davide e Daniele
Equipment Class: Amplifier
Notes: HF power amplifier
Grant Notes FCC Rule Parts Frequency
Range (MHZ) Output
Watts Frequency
Tolerance Emission
Designator
97 1.8 - 30.0 263.0 Amp F3E
Power listed is conducted. Emissions per 97.305 Amateur Service only
----------------------------------------------------------------------------------------------------------
Notice the F3E designator, if you follow the link you provided
( http://www.ab4oj.com/amps/hla305v_notes.pdf) and actually read the test info, you will see that all the "tests" were conducted in the RTTY and CW modes @ 200 watts output.
Now tell me the amp is actually Certificated for J3E, A3E, A1A, F1B, ect
the number "ACTRHLA305V" only means the paperwork has been submitted to the FCC by a third party laboratory.
(MET Laboratories, Inc.
914 W. Patapsco Avenue
Baltimore, MD 21230-3432)
in fact, if you research the actual number on the FCC site you will find this info:
Applications are submitted for FCC ID and Grant requests.
FCC IDENTIFIER: 2ACTRHLA305V
Name of Grantee: RM COSTRUZIONI ELETTRONICHE Snc di Marchioni Davide e Daniele
Equipment Class: Amplifier
Notes: HF power amplifier
Grant Notes FCC Rule Parts Frequency
Range (MHZ) Output
Watts Frequency
Tolerance Emission
Designator
97 1.8 - 30.0 263.0 Amp F3E
Power listed is conducted. Emissions per 97.305 Amateur Service only
----------------------------------------------------------------------------------------------------------
Notice the F3E designator, if you follow the link you provided
( http://www.ab4oj.com/amps/hla305v_notes.pdf) and actually read the test info, you will see that all the "tests" were conducted in the RTTY and CW modes @ 200 watts output.
Now tell me the amp is actually Certificated for J3E, A3E, A1A, F1B, ect
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If those amps can be used on FM and CW, they are probably Class C. Most of those good buddy amps are class C, which are worthless on SSB.
Best tossed in the dumpster.
Best tossed in the dumpster.
100% correct. There was a discussion on another forum some time ago and the same info came out. The info was submitted to the FCC and RM used that FCC ID number to claim that the amps were certified thus convincing a lot of less knowledgeable people that the amps were indeed FCC approved. Not so. They are NOT approved yet and likely never will be as they exist at this time.
9 years later...I use a Texas star dx500v driven by a Texas star vmod driven by my ft817 on 40m and 20m. I use a tuner between the radio and amps. Works great. I haven't gotten any bandwidth complaints. If I do I will stop. I haven't hooked up to a specan yet to see the spurious emissions. Love me hate me.
No sense in arguing with you.....but what you can do for free is monitor yourself with a web sdr to see how wide your signal is.
Find one that you can put a +10 or +20 signal on. Only the most awful imd will show up at low signal levels. If you run a poor antenna and are always down in the static no one will notice your dirty signal.
I doubt you have any spurious emission issues but with those amps you probably have an IMD problem.
Find one that you can put a +10 or +20 signal on. Only the most awful imd will show up at low signal levels. If you run a poor antenna and are always down in the static no one will notice your dirty signal.
I doubt you have any spurious emission issues but with those amps you probably have an IMD problem.
Try looking for those harmonic's spikes that do not exist and you'll find the real need for those expensive filters to be null and void.
I was more concerned with IMD. Even some bonafide ham gear splatters too much if the operator is a dunce. How about a 2 tone test at a 20kc span?
You can look at the export model spec chart on the TX star website and see the power output at 4 watts and 20 watts input. How many of them have linear gain? The 667 is obviously being driven into gain compression by the data on the chart.
You can look at the export model spec chart on the TX star website and see the power output at 4 watts and 20 watts input. How many of them have linear gain? The 667 is obviously being driven into gain compression by the data on the chart.
The 667 is a goob job.
There is no need for a driver in front of 4 2879's.
I have been using a Texas Star 500 on 10 and 12 meters for decades at the 340/360 watt levels on SSB and have never gotten a complaint about my signal.
My nickels worth.
73
Jeff
There is no need for a driver in front of 4 2879's.
I have been using a Texas Star 500 on 10 and 12 meters for decades at the 340/360 watt levels on SSB and have never gotten a complaint about my signal.
My nickels worth.
73
Jeff