| Author |
Message |
    
Swisher
New member
Username: Swisher
Post Number: 1
Registered: 2-2008
| | Posted on Thursday, February 28, 2008 - 9:48 am: | 
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I just recieved my new 500 from Copper. They don't give you a lot of info on setup, so I used the posts in the forum. For power I am using 2 900 amp hour batterys, in line, 10 gage copper multi strand wire for hot and ground. Radio is a 148 gtl at 2 watts DK. I have this setup in the house for now, will go in truck when working right. Radio is hooked to a workman 3 window meter box. Antenna is a Imax. This is my problem! Using Channel 20 am it DKs at 80 watts, swings to 180 watts, that is with varible turned to min. When varible is turned all the way up, there is NO change, when green botton is pushed in it reads half of what I get when is's out. What am I doing wrong or did I get a bad 500 or does it need to be modified to run on the cb channels. Tried different DKS,but max output stays the same. I'm new at this so please help!!!
Thanks in advance
JAY |
Tech808
Moderator
Username: Tech808
Post Number: 15382
Registered: 8-2002
| | Posted on Thursday, February 28, 2008 - 3:46 pm: |
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Swisher,
Your input from the radio to the amp should be between a MIMIMUM of 4 Watts and MAXIMUM of 20 Watts.
Approx. Power Output with 4 watts input from radio to the amp should be around 250 watts.
Approx. Power Output with 20 watts input from the radio to the amp should be around
500W/45A
It appears you are WAY LOW on your Input Power from the radio to the amp.
And no it does not need to be modified.
Hope this help's,
Lon~Tech808
CEF#0808/HAM#001/CVC#0002
Tech808@copperelectronics.com
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1861
Advanced Member
Username: 1861
Post Number: 718
Registered: 2-2004
| | Posted on Thursday, February 28, 2008 - 3:56 pm: |
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you also need bigger than 10 gauge power wire |
Dale
Senior Member
Username: Dale
Post Number: 1296
Registered: 12-2002
| | Posted on Thursday, February 28, 2008 - 8:02 pm: |
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well after reading some old posts to me it would
seem a cobra 148 wouldnt give the 500v anywere
near fulloutput.however a radio like
magnum 257
magnum omegaforce
would push it towards its marks.
im sorry swisher but imho i think the 667v or
ts350vhd would match up better to your current radio
dale/a.k.a.hotrod
cef426
cvc#64
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Tech808
Moderator
Username: Tech808
Post Number: 15386
Registered: 8-2002
| | Posted on Thursday, February 28, 2008 - 8:14 pm: |
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For MORE information on Amplifier Installation:
CLICK HERE > Mobile Amplifier Installation Tip’s
Lon~Tech808
CEF#0808/HAM#001/CVC#0002
Tech808@copperelectronics.com
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Swisher
New member
Username: Swisher
Post Number: 2
Registered: 2-2008
| | Posted on Saturday, March 01, 2008 - 7:15 am: |
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Can not get the old 148 to do any better then 180 on high, no matter what i tried. Put my backup radio in line, it's a ss 3900 ghp, 3 watts DK, turned on amp, with green botton out it dead keyed at 200 and pep was 425, so thats the way I'll go and retire the 148. I was told there was some static behind my transmissons, but overall it was loud, this is installed in my truck. Any ideas how to get static out, was using stock mic. I do have a question on wire size, you say use a 4 to 6 gage wire, what is the reason for this, amp comes with 10 gage from factory and there should be a safe working load built in to that so you don't burn everything up?
Thanks Guys for all the info, for I am learning!!! |
Dale
Senior Member
Username: Dale
Post Number: 1297
Registered: 12-2002
| | Posted on Saturday, March 01, 2008 - 4:42 pm: |
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yea the 3900 will drive that amp harder cause
that radio will do more watts.as far as the
static in your transmissions im not sure.
if ya have 1 or an get one try a roadking56
mic i love these mics in a mobile.also tell
me what your dk/swing is on am.and pep on ssb is
and is this static on all modes or just 1.need
little more info on this.also is the audio
limiter still intact?if not i HIGHLY reccomend
geeting it back intact.
dale/a.k.a.hotrod
cef426
cvc#64
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Mrclean
Member
Username: Mrclean
Post Number: 90
Registered: 12-2003
| | Posted on Sunday, March 02, 2008 - 11:52 pm: |
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Make sure the mic conector is tight. Last night a freind I was talking to had static in his transmission. Asked if it was loose and he checked and it was. When he tighted it no more static. |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2457
Registered: 1-2005
| | Posted on Thursday, April 03, 2008 - 8:02 pm: |
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Swisher, A 200 watt deadkey is a little high for a DX500, watch the heat and keydown times. On the other hand many meters are not very acurate all giving different readings. I have run many Cobra 148's and DX500 combos with full output. Optimal range is a 120 watt deadkey and a 480 watt swing, again most ALL meters vary. Your amp needs a regulated 45 or 50 amps constant at 13.8 volts. A battery alone will not give good performance. You must have a power supply for indoors or an adequate alternator in the mobile. SWR is very important by the way. You have not mentioned what your standing wave ratio is. If much higher than 1.5 then your not going to get good amp performance.
The 1 foot length of 10 gauge power wire on the amp is ok, for 1 foot. It is basic electricity. The longer the wire gets the more resistance you get. 50 amps of 13.8 volts going into 8 feet of 10 gauge wire is not what you going to get coming out. The power just cannot get through the wire fast enough the longer the wire gets. The longer the wire the more resistance and the less power going to the very power hungry amp. I use 8 gauge for a six foot run. Much longer than that you need to go with 6 gauge and on and on.
Check out Tech 808's link! 73
KEEP IT REAL!
Kenny
cef491(27.115lsb)
2sf491(27.555usb)
Indiana
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Hotwire
Senior Member
Username: Hotwire
Post Number: 2498
Registered: 1-2005
| | Posted on Friday, June 06, 2008 - 12:32 pm: |
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One of my DX 500v,s stopped working. I beleive it is the keying tranny yet again. It has been replaced once before.
I called the T.S. tech Mike out in California and he said that they have a batch of those transistors with a high failure rate. He is going to mail me some so I can replace the part myself. May need to keep some on hand.
Anyone ever have this problem with their Texas Star amps before?
KEEP IT REAL!
Kenny
cef491(27.115lsb)
2sf491(27.555usb)
Indiana
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Hotwire
Senior Member
Username: Hotwire
Post Number: 2503
Registered: 1-2005
| | Posted on Wednesday, June 11, 2008 - 1:05 pm: |
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Replaced keying transistor and all is well!!!
KEEP IT REAL!
Kenny
cef491(27.115lsb)
2sf491(27.555usb)
Indiana
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