Texas Star 500
pencil...@my-deja.com
auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
getting no more that 310 watts on AM max. and about 425 on sideband.
Does this seem a little low to you, or am I hoping for too much? The amp
is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
match. Hmmmmmm.
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
TwoIR082
make a 30 watt amp and call it a texas1000 if i wanted. 73 tim 2-IR-082
www.irdx.org
CALADAN 1
In the case of Texas Star this is not true. They are rated AM pwr and willdo
honestly what they are rated on the front.
Not the "real" Andy AMR 30
Gunsmoke
CALADAN 1 wrote in message <19990802074834...@ng-ca1.aol.com>...
CitySlicker
radio driving them hit 750 PEP. How many watts are you driving it with?
TwoIR082 wrote in message <19990802063744...@ng-fs1.aol.com>...
:thats about right. just cause a amp says 500 doesnt mean 500 watts. i could
:make a 30 watt amp and call it a texas1000 if i wanted. 73 tim 2-IR-082
:
:
steven tucker
pencil...@my-deja.com wrote in message <7o35at$sse$1...@nnrp1.deja.com>...
>I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
>auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
>getting no more that 310 watts on AM max. and about 425 on sideband.
>Does this seem a little low to you, or am I hoping for too much? The amp
>is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
>match. Hmmmmmm.
>
>
Jay
you, or is it Kevin? ...... Your just as snotty on the ham newsgroups as the
CB newsgroups. You are consistent, I must say.
Jay at jay...@qnet.com .... In the Great Mojave desert, just down the road
ah ways from the fillin station.
Gary Danaher wrote:
> You should open it up and put a screw drive to it, and make it better.
-=PEAKABOO=-
should see, maybe a little more, the DX-500 wont do much more than theDX-400
due to lack of drive. A DX-400 (4 X 2sc2290) will do about 180-210 watts
RMS, about the same as a DX-500, the 2sc2879's in your DX-500 require almost
twice the drive achieve full output, 7 watts in = 120 watts out, now this is
just specs from the manufacture. So 4x7=28 (required input for full output)
and your output would be roughly120x4=480, if the amplifier were 100%
efficient, which its more than likely about 65 to 75% efficiency, so more
like 360 watts output. now this is all ballpark calculations,assuming your
radio is doing at least a TRUE 28 watts pep, like you would see on a peak
bird reading, anyway I hope this helps. Goodluck!
Bill Eitner
>
> I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
> auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
> getting no more that 310 watts on AM max. and about 425 on sideband.
> Does this seem a little low to you, or am I hoping for too much?
No, it does seem a little low.
> The amp
> is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
> match. Hmmmmmm.
Remember that you need a +/-5% meter and a dummy load
plus an accurate under-load DC supply (at the ends of
the DC wires entering the amp) reading to have any
clue what the amp SHOULD be doing.
For example, the latest batch of DX-500Rs that I got
produce 700 peak watts with 40 peak watts in with an
under-load supply voltage of 14 volts.
My suggestion is that you investigate further. Low
under-load supply voltage or low drive are very likely
candidates for why your amp isn't doing what it should.
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.
--
-------------------------------------------------------------------
-=[Bill Eitner]=-
Link to A.M. Tutorial, rec.radio.cb FAQ
and The Dark Side:
http://kd6tas.conk.com
-------------------------------------------------------------------
Bill Eitner
to make your claim come to life.
The Texas Star 500 is an honest performer. It will produce 500 peak
watts in almost any application--that's what makes it so great.
If peak and RMS are giving you fits, check out the AM Tutorial on
my website--there's a link to it below.
CALADAN 1 wrote:
>
> >thats about right. just cause a amp says 500 doesnt mean 500 watts. i could
>
> In the case of Texas Star this is not true. They are rated AM pwr and willdo
> honestly what they are rated on the front.
> Not the "real" Andy AMR 30
John Gervasi
referring to PEP.
Radiobufff
>:>I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
>:>auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
>:>getting no more that 310 watts on AM max. and about 425 on sideband.
>:>Does this seem a little low to you, or am I hoping for too much? The amp
>:>is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
>:>match. Hmmmmmm.
>:
Radio in the Bufff
Co-Ed Naked Radio
Support your local Oscillator
Please remove<.rfi.tvi>
Gary Danaher
pencil...@my-deja.com wrote:
>
> I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
> auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
> getting no more that 310 watts on AM max. and about 425 on sideband.
> Does this seem a little low to you, or am I hoping for too much? The amp
> is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
> match. Hmmmmmm.
>
Hillbilly Dave
CitySlicker <man...@concentric.net> wrote in message
news:7o5dbh$b...@journal.concentric.net...
> Sounds like you may need some tuning I have seen these amps with the same
> radio driving them hit 750 PEP. How many watts are you driving it with?
>
tuning? , how do you tune that amp?
Dave
KG5XR
Dave's Radio Electronics
Since 1972
The (little) voice of the Ozarks
ICQ#43209866
http://www.geocities.com/TheTropics/Island/4371/index.html
Mobile 51
you use a mod-v to drive it. 800 peak out all day and it is loud modulation.
Not quite as good as my sweet sixteen, though:-)
>
>Needs to be "volted up", hit it with 16volts and watch the watts flow
>
>>:>I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
>>:>auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
>>:>getting no more that 310 watts on AM max. and about 425 on sideband.
>>:>Does this seem a little low to you, or am I hoping for too much? The amp
>>:>is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
>>:>match. Hmmmmmm.
-=PEAKABOO=-
Bill Eitner wrote in message <37A6870F...@netzero.net>...
>pencil...@my-deja.com wrote:
>>
>> I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
>> auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
>> getting no more that 310 watts on AM max. and about 425 on sideband.
>> Does this seem a little low to you, or am I hoping for too much?
>
>
>> is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
>> match. Hmmmmmm.
>
> plus an accurate under-load DC supply (at the ends of
> the DC wires entering the amp) reading to have any
> clue what the amp SHOULD be doing.
>
> For example, the latest batch of DX-500Rs that I got
> produce 700 peak watts with 40 peak watts in with an
> under-load supply voltage of 14 volts.
>
> My suggestion is that you investigate further. Low
> under-load supply voltage or low drive are very likely
> candidates for why your amp isn't doing what it should.
>
COLD as ICE
<jger...@bellatlantic.net> writes:
>I wish that were true. I have two 667Vs. No where near 600W unless they are
>referring to PEP.
>
THEY ARE REFERING TO PEP!!!!!!!
>CALADAN 1 wrote:
>
>> >thats about right. just cause a amp says 500 doesnt mean 500 watts. i
>could
>>
>> In the case of Texas Star this is not true. They are rated AM pwr and
>willdo
>> honestly what they are rated on the front.
He who knows not and knows not he knows not,is a fool Shun him
He who knows not and knows he knows not,is simple Teach him
He who knows and knows not he knows,is asleep Awaken him
He who knows and knows that he knows,is wise Follow him
ICECOLDNYC
Hank Aaron
Gary Danaher wrote in message <37A64AC7...@flash.net>...
>You should open it up and put a screw drive to it, and make it better.
You know. Hmpt. I want so much to go off on you. You contribute NOTHING
more than sarcasm to this newsgroup. Why? If you disagree to something,
then fine. But honestly, no one was asking your opinion on linears
themselves, nor were they asking for anyone elses. So now we are all
reminded that you do not like linears. Horray for you my friend.
Look.. You want to post sarcasm, fine go to it. No one can help that the
best of you were the last few drips down your daddy's leg. Seriously. It
is no ones fault but his own.
Actually, now that I make a more carefull analysis of your post... it
seems (and correct me if I am wrong) as if you are suggesting homosexual
acts...? Thats fine.. It is your paragotive. Take care pal!
"Hank" (oh, RHOOLIGAN [bless his soul] already discovered my
name and email address were fake, sorry, no fun for you)
Bill Eitner
>
> What it really needs is a mod-v driver... That amp will walk all over a 667 if
> you use a mod-v to drive it. 800 peak out all day and it is loud modulation.
> Not quite as good as my sweet sixteen, though:-)
I agree. However, no matter what you do, you couldn't set it for
a 500 watt dead-key and have it not backswing on an average-reading
Bird 43.
If I'm not mistaken, that's what someone who responded to the
original poster said. That's simply not the case. To make the
deadkey wattage hold on a Bird 43 when modulation is applied
the peak wattage has to be 3 times the original deadkey wattage.
For example, if an amp deadkeys at 500 the peak power will have
to be at least 1500 otherwise you'll see backswing on a Bird 43.
Making a Texas Star 500 peak at 1500 watts will require the use
of just about every competition trick there is--there's absolutely
no way that it'll do it in stock form.
> >g-cm1.aol.com>
> >
> >Needs to be "volted up", hit it with 16volts and watch the watts flow
> >
> >>:>I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
> >>:>auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
> >>:>getting no more that 310 watts on AM max. and about 425 on sideband.
> >>:>Does this seem a little low to you, or am I hoping for too much? The amp
> >>:>is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
> >>:>match. Hmmmmmm.
> >>:
> >
> >
> >Radio in the Bufff
> >Co-Ed Naked Radio
> >Support your local Oscillator
> >
> >Please remove<.rfi.tvi>
> >
> >http://members.aol.com/radiobufff/index.html
> >
> >
> >
> >
> >
Bill Eitner
>
> Hey Bill what radio were you driving these DX-500Rs with?
A tuned up President Jackson (MRF477 final).
The power supply is a Vietnam era Army surplus
unit (designed in 1962 and built in 1975) that
runs on 220 and feeds 1/0 cable that ends in a
homebrew terminal block (a piece of wood with
carriage bolts through it) on my test bench.
It's potential output is in the 120 amps at 19
volts (2280 watts) range.
The dummy load is a finned, oil-filled, 600 watt
continuous type that came from Raytheon but was
made by some other company.
The meter is a Welz-built Palomar PW-5000 whose
peak measurements run hand-in-hand with my military
Bird 43 that has the latest generation peak-reading
kit in it.
The bottom line is that I'm pretty damned confident
that my readings are accurate within +/-5% under the
test conditions that I laid out. If you've followed
this newsgroup for any length of time you'll know
that the wattage readings I post are generally considered
to be very conservative--and that's putting it lightly.
A few people have all but accused me of posting
artificially low readings. So, if you duplicate my
test conditions, chances are you'll see my numbers
or even higher numbers.
The Texas Star 500R is a kick-ass amp, but it has
it's limitations. ANYONE--I don't care who they
are, would be hard pressed to make a 500R produce
500 average watts at full modulation on a Bird 43.
It would take full comp set-up to make that happen.
Full comp set-ups run 10 seconds out of every 20
minutes--they aren't practical, daily-use set-ups.
--
> Bill Eitner wrote in message <37A6870F...@netzero.net>...
> >pencil...@my-deja.com wrote:
> >>
> >> I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
> >> auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
> >> getting no more that 310 watts on AM max. and about 425 on sideband.
> >> Does this seem a little low to you, or am I hoping for too much?
> >
> > No, it does seem a little low.
> >
> >> The amp
> >> is being driven with my rci 2950, RG-8, and a 102" steel whip with 1:1.2
> >> match. Hmmmmmm.
> >
> > Remember that you need a +/-5% meter and a dummy load
> > plus an accurate under-load DC supply (at the ends of
> > the DC wires entering the amp) reading to have any
> > clue what the amp SHOULD be doing.
> >
> > For example, the latest batch of DX-500Rs that I got
> > produce 700 peak watts with 40 peak watts in with an
> > under-load supply voltage of 14 volts.
> >
> > My suggestion is that you investigate further. Low
> > under-load supply voltage or low drive are very likely
> > candidates for why your amp isn't doing what it should.
> >
> >> Sent via Deja.com http://www.deja.com/
> >> Share what you know. Learn what you don't.
> >
> >
Bill Eitner
>
> CitySlicker <man...@concentric.net> wrote in message
> news:7o5dbh$b...@journal.concentric.net...
> > Sounds like you may need some tuning I have seen these amps with the same
> > radio driving them hit 750 PEP. How many watts are you driving it with?
> >
>
> tuning? , how do you tune that amp?
You don't--the guy doesn't know what he's talking about.
You can play with turns ratios and capacitance values
all day, but you won't see more power until you increase
the drive and supply voltage.
> Dave
> KG5XR
> Dave's Radio Electronics
> Since 1972
> The (little) voice of the Ozarks
> ICQ#43209866
> http://www.geocities.com/TheTropics/Island/4371/index.html
CitySlicker
output. Maybe tuning is the wrong word. I just leave it to the best and I am
not disappointed. If you want to know what he does; pay the price to have
one "tuned" and then look inside.
Many times changing the feed wire size, fuse scheme etc. will allow more
power thus increasing output.
Bill Eitner wrote in message <37A7E1EE...@netzero.net>...
DoMeDew 21
range for the AMP ?? and will the higher voltage affect the other 12 volt
stuff in the car ?
-=PEAKABOO=-
of them on my bench and the only way I could get 700 peak watts out of one
them was to run the voltage to about 14.5 and hit them with a one pill, On
the 43's they were doing 350,that was on 1K slug (new not surplus) and my
power supply is a haus, 200 amps continuous, about 400 pounds, PC 76 on the
bench.
Bill Eitner wrote in message <37A7DFD1...@netzero.net>...
Bill Eitner
and drive power.
I've talked to Dennis (aka #12) and I know what he does.
He removes inefficiencies that exist in certain amp designs.
I've provided him with information that has simplified his
task.
Dennis is not the only guy that's ever been on this newsgroup
that understands amplifiers.
If you want to view him as some sort of amplifier God--that's
your right. Just keep in mind that others (who are still
out here even though Dennis has run off) understand amplifiers.
--
> :--
PLLO2A
if it requires, for example,a 50 watt drive and you are driving it with 25
watts your output will be lower.
i had a magnum 2000, (125 watts am, 200 watts ssb), which drew 25 amps max.
if yours draws the bulk of the max. output of your alternator and you run the
a/c and headlights also, this will affect your output too.
i had that amp in a 1987 yugo,(ok stop laughing), which had a 55 amp alternator
and a 1.1 liter shoebox with 4 mice.
if i keyed up on max., it really lugged the engine down. the pres. 2510 and amp
had more horse power than the engine did.
i hope this helps.
jeff
Brass
<kd6...@netzero.net> wrote:
> The items you mention boil down to increases in supply voltage
> and drive power.
>
> I've talked to Dennis (aka #12) and I know what he does.
> He removes inefficiencies that exist in certain amp designs.
>
> I've provided him with information that has simplified his
> task.
>
> Dennis is not the only guy that's ever been on this newsgroup
> that understands amplifiers.
>
> If you want to view him as some sort of amplifier God--that's
> your right. Just keep in mind that others (who are still
> out here even though Dennis has
BEEN
run off) understand amplifiers.
Bill is telling you the truth
Brass
Hank Aaron
DoMeDew 21 wrote in message
<19990804114152...@ng-cq1.aol.com>...
Have an alternator without an internal regulator.. Then build or buy
yourself a voltage (field) regulator and vary the voltage that way.. and
yes, if it wasn't an extra alternator it would therefore distribute this
very voltage throughout your vehicle, which isn't advisable.
Hank
PS - Besides, most vehicles will read 13.4-14.20 on a volt (multi) meter.
My 91 Honda Prelude reads 14.24 +/- .18 on a fluke. That is, the main
alternator for the cars purposes.. Thought, my two leece-nevilles (one of
which is replacing my air conditioner compressor) are putting out 19.8 volts
onto (2) battery "packs", in which each "pack" consist of a 12 volt marine
and a 6 volt tractor battery in series.
This of course is for helping truck drivers start their big diesel engines,
should they ever need assistance..... ahemm...
CitySlicker
out put of the amp. Bills comment basically was stating that an amp can't be
tuned or modified to improve its performance.
Dennis, is the best I know in my part of the country. I never referred to
him as a God you did. Funny, I can't ever remember you providing any
technical info on this NG regarding amps. Plenty of hot air though about the
best one you happen to be selling at the time.
Dennis has no axe to grind he doesn't have inventory to move. I can listen
to him as a tech and not a salesman.
Bill on the other hand has went to not believing the power claims by some on
this NG to becoming a comp. amp pro. Makes me wonder.
Have a good day.
Brass wrote in message ...
:In article <37A910DD...@netzero.net>, Bill Eitner
"MR WORLDWIDE"
Hank Aaron wrote in message <7odp2b$4pa$1...@news.gate.net>...
robertliv...@yahoo.com
> I own a Texas Star DX-500. It's powered by an 100 amp alternator, 1
> auxilery batter, and 4 awg wire, reduced to 6 awg at the amp. I'm
> getting no more that 310 watts on AM max. and about 425 on sideband.
> match. Hmmmmmm.
>
>
