1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice
Dismiss Notice
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.

Kraco kcb4007 (what I learned before I let the smoke out)

Discussion in 'CB Radio Modifications' started by Uncle Ronnie 336, Feb 28, 2021.

  1. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

    Joined:
    Apr 23, 2018
    Messages:
    5,079
    Likes Received:
    6,784
    Nice work!



    Hows the patient?
     

  2. Uncle Ronnie 336

    Uncle Ronnie 336 Active Member

    Joined:
    Apr 28, 2020
    Messages:
    105
    Likes Received:
    40
    Golden..... literally
     

    Attached Files:

  3. Uncle Ronnie 336

    Uncle Ronnie 336 Active Member

    Joined:
    Apr 28, 2020
    Messages:
    105
    Likes Received:
    40
    I still want to send one of these to ya Andy. I'm doing a second one to experiment more and see if I could get more output which I don't see why I can't get somewhere around a 7-watt carrier swinging up north of 30, and I might have to play around with the driver more. So as always I will keep my eyes peeled but I'm definitely not into shelling out more than 15 bucks on one of these before mods. I don't know why but I see em going for 40 and 50 bucks most of the time which is pretty weird for such a crap radio stock
     
    Handy Andy likes this.
  4. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

    Joined:
    Apr 23, 2018
    Messages:
    5,079
    Likes Received:
    6,784
    You don't need to send me anything - I've got a junk box, closet and stuff I'd love to take out and put back on the bench.

    But that may NEVER happen, once mom passed, the Wife's been pretty "dominate" over what I'm able to restore and otherwise function with. So in fewer words, I lost the bench to her needs.

    To keep the peace, you folks still deal with me out here with an occasional peek into the back of the closet where I still have stuff I can take out and play, use, repair stuff, with and have enough time to put in all back there closed up for another day.
     
    Shadetree Mechanic likes this.
  5. Uncle Ronnie 336

    Uncle Ronnie 336 Active Member

    Joined:
    Apr 28, 2020
    Messages:
    105
    Likes Received:
    40
    Happy wife happy life they say. I've been clearing off a shelf of repair jobs. Unless it's one of the four radios I decided I wasn't selling, and if it works it's for sale. I just resurrected a cobra 140 GTL that definitely seen some use and had a bit of a beat up case so I'm painting that hammered black. I also have to change a meter and recap it. But the fact that I got it working is a victory. it will be for sale and I will post it if it actually makes it to the internet marketplace
     
  6. Uncle Ronnie 336

    Uncle Ronnie 336 Active Member

    Joined:
    Apr 28, 2020
    Messages:
    105
    Likes Received:
    40
    I have another one! in addition to the mosfet conversion gonna try using a irf520 in both spots instead of irf510 driver, I would like to replace the audio transformer with a Darlington transistor and try to get some hi fi audio out of it. I believe the transformer in their stock made it so my power was more or less capped at around 20 to 25 pep and if I tuned it up wrong it would squeal. And as it goes when you start pulling more juice through a transformer the audio will start to suffer at some point. So I tuned it up so it has around a three-watt carrier and sounds decent and loud for what it is, gave it to my friend who had one as a kid. This next one I would like to attack the audio section. I have a general idea of what I have to build in place of the transformer but I would like to hear someone else's thoughts before I start on this in roughly a week
     
    Handy Andy likes this.
  7. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

    Joined:
    Apr 23, 2018
    Messages:
    5,079
    Likes Received:
    6,784
    Look around here for TRC-427 mods, might give you some guidance...
     
  8. crappykraco

    crappykraco W9WDX Amateur Radio Club Member

    Joined:
    Aug 6, 2014
    Messages:
    67
    Likes Received:
    20
    i heard kracos are crappy.
     
    tecnicoloco likes this.
  9. Uncle Ronnie 336

    Uncle Ronnie 336 Active Member

    Joined:
    Apr 28, 2020
    Messages:
    105
    Likes Received:
    40
    Oh it totally is
     

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!