Noisy Pre-Amp Texas Star 667v Turbo Mod

[BoxHillBoy]

Got a hot deal on a TS 667v Turbo mod. Seems to work ok, being new to amps dont have much to go off. I do have a 203p

The problem is when i switch to pre amp the noise is horrendous. Its not just loud static but seems to be static and splatter mixed together. Its so bad it drown out weak signals and is better off not using it.

I have tried it on both my Wahington base stations 858 board and later Uniden model no difference.I also tried it on my Uniden Grant and it didnt sound as bad?

When i use the pre amp on the 203p it amplifies much cleaner and works well.

My SWR is good 1:2:1 across the board and the amp is being powered by a 60amp switch mode power supply coax is RG213 from antenna and all patch leads

 

[9C1Driver]

That is how pretty much every "cb" amplifier pre-amp works. For the most part they are a worthless gimmick. That said on a rare occasion late at night on a quiet channel you can sometimes pull in a weaker signal. You might have to find the sweet spot by backing the RF gain down a tad as well.

 

[Slowmover]

“Pre-Amp” (KL-203p) while mobile only worked for me in far rural areas on very quiet nights with DSP to make its use worthwhile.

“Worthwhile” is that my constant goal is greatest RX distance.

 

[nomadradio]

The Texas Star preamp is an absolutely-minimum-component circuit. Chosen for least cost, and won't perform well as a rule. Only improvement I know to make is an external preamp with enough stuff in it to actually do the job.

73

 

[BoxHillBoy]

so after a little rooting around the pre amp is very noisy on my 5 element beam. When using the 1/2 wave station master it seems to work well or how it should.

 

[nomadradio]

Way cool! At least it's useful some of the time.

73