new texas star DX1600

[tunercars]

so i have a DX1600 and its lazy because it will key up and then slowly climb in power i have it hooked up to a 220v 300 amp power supply at times it keys up full power and other times it keys up and then climbs to full power what is causing that and how can i fix it

 

[9C1Driver]

What is the SWR? Is everything right with your grounding and antenna system? Are your jumpers all good? I assume your running it at 13.8-14 volts?

Years ago a local had this problem in a mobile set up. It ended up being his Wilson 5000 mag mount. The mag mount ground was not good enough, switched to a direct mount and the problem went away.

 

[loosecannon]

try to see if the power varies with temperature.
like, the amp does this much power when cold, and this much power when warm.
LC

 

[tunercars]

What is the SWR? Is everything right with your grounding and antenna system? Are your jumpers all good? I assume your running it at 13.8-14 volts?

Years ago a local had this problem in a mobile set up. It ended up being his Wilson 5000 mag mount. The mag mount ground was not good enough, switched to a direct mount and the problem went away.

jumpers good grounds are good tower and antenna are grounded with 4 grounding rods swr is flat and running at 15 volts

 

[tunercars]

try to see if the power varies with temperature.
like, the amp does this much power when cold, and this much power when warm.
LC

nope same when cold or warm but most do drop with high heat i don't stay hammered on it to get it real hot not trying to cook dinner on it haha

 

[tunercars]

also should say 500v runs fine 250 killer bee runs fine 4 gauge power and ground to the dx1600

 

[Shadetree Mechanic]

Take the cover off and show us some pictures, maybe someone can spot something wrong or out of place. Maybe a combiner with a bad connection, or output tune capacitor problem.

 

[Eldorado828]

Take the cover off and show us some pictures, maybe someone can spot something wrong or out of place. Maybe a combiner with a bad connection, or output tune capacitor problem.

@Shadetree Mechanic just wants to see those Toshiba's!

 

[nomadradio]

15 volts

A bit high for a Texas Star. Gotta wonder what the current draw is if you key it up with no drive. Takes a gator-clip lead to do that, and an ammeter in line with the power lead. Much more than a tenth of an Amp per transistor can lead to trouble.

There is no regulation applied to the transistors' base bias, so goosing the supply voltage has a downhill-snowball effect on transistor current. And a downhill influence on transistor service life.

Or you could turn the supply voltage down a couple of Volts and see how that affects its behavior.

73

 

[tunercars]

@Shadetree Mechanic just wants to see those Toshiba's!

He would be sad to know its a new not new to me but brand new it has DEI but all the new radios and amplifiers that are produced other than known custom amp Builders use DEI also before anyone goes on a bashfest they actually don't work too bad in the radios that have amplifiers and even in the Texas Star amps got a 500v that works perfectly fine with DEI also ran at 15 volts and runs fine you have to think that car voltage runs at 14.5 volts 14.8volts when charging so 15 isn't going to really hurt it I wouldn't go any higher than that but I've seen people run their stuff at 16 17 volts but I'm not going to chance it

 

[tunercars]

Take the cover off and show us some pictures, maybe someone can spot something wrong or out of place. Maybe a combiner with a bad connection, or output tune capacitor problem.