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Recent content by Herbert Lindsey

  1. Herbert Lindsey

    Turning down dead key for amp?

    Since there are so many replies I’ll chime in and say that the dead key is only good on AM mode. I stated that I mainly talk SSB which doesn’t effect the power at dead key with no carrier on SSB.
  2. Herbert Lindsey

    Turning down dead key for amp?

    I have a President Mckinely running into a Predator 225 amp. So I’m guessing about a 3 watt dead key from the radio. The only problem is that my Giant MFJ meter needs about 10 watts to calibrate for SWR. I talk on SSB mostly. I’m going to play around with the dead key on the radio while watching...
  3. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    I got modulation on lo power now and high power. I'm getting 10 watts RMS. I'll check power tomorrow with another meter and check the power draw one more time. Regulator still gets kinda hot. I'm not sure if it's too hot or not. I'll check voltages as well. Bad solder joints!
  4. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    I'm still hunting for a short and why I don't have modulation. I'll start again this weekend.. I checked a little last night......Basically got the radio back to where it was. I have modulation on high power with a slight hum. No modulation on low. There are a lot of bad solder joints on this...
  5. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    Well I found out why my last final wasn't working. While is was unhooking the driver and finals I melted the solder and inadvertently pushed a jumper thru the board. It works now. I'll fine tooth comb it tomorrow and see if I did any other damage.
  6. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    I think I will start from scratch step by step and post my results as I move along that way I won’t be jumping steps. I’m thankful there is a forum like this to help out. If it would have been my radio, I would have it sitting on a shelf broken forever. These kind of things force me to learn. I...
  7. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    I’ll look more when I get home. Do you have a phone number? So we don’t make this thread so long?
  8. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    Well I have a better understanding of where to check for mA draw. That pic is where i set mA for my Galaxy 88, I'm working on a Connex 3400 HP mosfet version with the 360015C board. I started out with no power or modulation, then I installed new IRF520s and i got power on High and low but no...
  9. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    This jumper is the TP8, 9 etc?
  10. Herbert Lindsey

    EPT360015C Connex cx3400hp dual mosfet issue.

    I have read this rather large post and I can surely identify with the difficulty of repairing this particular radio. I have one on my bench that I was trying to look at for a friend blown finals and all. I have no experience at repairing radios so I was quite excited to see such a detailed post...
  11. Herbert Lindsey

    my new radio has problems

    Burghart Radio
  12. Herbert Lindsey

    102" whip base install

    If you are like me you won't be satisfied with the performance of a 102 inch whip. Yes it will work, until you can get a proper base antenna. I use a Procom base antenna for about $75.00 and its up about 30 ft. I talk all over town and plenty of skip. Some guys like mower Junkie have used 102...
  13. Herbert Lindsey

    Galaxy 88 drifter

    I have aligned this radio several times and it never transmits on the same frequency. It’s been cold, it’s been hot and in between but always drifts off. What temp do you do an alignment at or what components can I replace to make this galaxy more stable on SSB? I set the frequencies and it...
  14. Herbert Lindsey

    How to hook up Function Generator for 30mV 1k test tones

    That’s the scope that I am going to get.