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  1. Stinkbait

    Galaxy dx959 EPT069610Z help

    Good stuff, Thanks for input. Say I put a 10pf/UJ at C131, 1k at R144 to keep pot from bottoming out, leave R153 at 10k, and go to a higher range variactor, say NTE614(33pf) or inlist a 612 (near cross to stock but has temp comp), I have both of these in the parts bin . Leave everything else...
  2. Stinkbait

    Galaxy dx959 EPT069610Z help

    I found this crystal at Digikey HC-49US ECS-153-20-4 Frequency Stability ±50 ppm (Stock Galaxy ±100ppm) Tolerance ±30 ppm (Stock Galaxy ±50ppm) Load Capacitance 20 pF (Stock Galaxy 15 to 50pf) ESR 40 Ohms (Stock Galaxy 25 ohms) price $.69 cents...
  3. Stinkbait

    Galaxy dx959 EPT069610Z help

    It's from an eBay estate sale, I only got less than $200 invested in it, not counting labor and the parts I already had. Think I'll name it "Minnow Bucket".
  4. Stinkbait

    Galaxy dx959 EPT069610Z help

    At this point that sounds like a good idea to me too. The radios is working good atm, dead key 2 swings 12 on am max, voice compressor schottky diode receive and NB enhance. Speech processor and echo. Some drift on cold days but seem to like the hot car. This and the channel mod is all that's...
  5. Stinkbait

    Galaxy dx959 EPT069610Z help

    The varactors form vintage uniden chassis (Washington,148,142, ect) have been discontinued but cross to NTE612, so does the Ranger chassis but the NTE612 has a temp coefficient spec that is not even mentioned in the svc251 so he may be on to something there, I've got some on order. R114 and the...
  6. Stinkbait

    Galaxy dx959 EPT069610Z help

    Thank you for that. I'm on my mobile now but let me get back to my workstation and look at some prints. ,, then I can better comment. I do appreciate all the advice I can get before I open it up again.
  7. Stinkbait

    Galaxy dx959 EPT069610Z help

    On the clairifier mod, Do you happen to know what the normal voltage range is to the x3 crystal? I will measure mine with a VTVM and do some experimenting to get a balanced 5kc slide without causing drift. I know it can be done properly, I'm assuming there has to a balance of voltage and...
  8. Stinkbait

    Galaxy dx959 EPT069610Z help

    Yes. That was posted above and referenced in looscannon's 7 year thread. In That thread he basically warned that a tedious radio alignment and balance procedure was required to calibrate the 2 mosfets and new additional circuitry in a radio that was not designed to have them. Several tried and...
  9. Stinkbait

    Galaxy dx959 EPT069610Z help

    Thanks for pointing me there. I found the thread you mention, It spans over 7 years, lol. There is alot of info but no real practical answers. I like the idea because it looks neat and clean as opposed to having gadgets and wires hanging about. It was exactly what I wanted to do, however to...
  10. Stinkbait

    Galaxy dx959 EPT069610Z help

    OK, good stuff. So we put c130 back to 20p(it already is btw) or go to 10pf for balance, and change the variactor to a NTE614(33pf @ 4v). What works best? I see alot of different of mods on this.
  11. Stinkbait

    Galaxy dx959 EPT069610Z help

    This is a simplified drawing of the clairfier CKT. Problem is little or no slide, Questions: 1: Is 10k pot too much? 1k is stock, PLL was aligned in the center(5k) position. 2: C130 to 4pF seems extreme and may be causing (or adding to) stability problems. The radio drifts somewhat anyway and...
  12. Stinkbait

    Galaxy dx959 EPT069610Z help

    Yea, I'm gonna swap out the one final and find a better amp. I'm also having problems with the clairifier mod. I tried all the tricks, R153 to 10ohm, c130 to 4pf. installed a 10turn 10k pot with a counter knob. Pot is 8v constant top(J9 pin1), dc ground bottom, D38/R114 shorted, D68/R113 gone...
  13. Stinkbait

    Galaxy dx959 EPT069610Z help

    Thanks for that, I was searching under model rather PCB numbers. However the gain would not even be noticeable. I take it you favor the 520's over the EKL mosfet's? The ERF2030+ is suppose to be an upgrade to old 2030 but I haven't found a data sheet for them yet. They rate them oddly like "30...
  14. Stinkbait

    Galaxy dx959 EPT069610Z help

    Hi, this is my first post butt I have read a lot of threads and found most everything I need. I am a retired Electronics tech and have test equipment. Scope, counters, sig gen ect. After years of being off the air, I start to notice some antennas on vehicles around and decided to dust off the...