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  1. #1
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    Direct Injecting a Galaxy or Connex type

    Hey guys here is the direct injection mod for galaxy and connex type radios, such as 33,44,55,66,73,77,88,99,3300hp,genral lee and some others that use this board.
    You will need the following: 1 - cap between 3uf - 10uf no more than 10uf. 1 - 1/4 mono jack chassis mount. 1 - on/on switch. wire and soldering stuff.

    1. Drill and mount the switch and mono jack. 2. Locate and remove C191. 3. Solder + leg of cap in hole closest to middle of radio. 4. Solder A wire from - side of cap to center pin of on/on switch. 5. Solder a wire from one side of the switch to the other hole of C191. 6. Solder a wire from other side of switch to the + side of mono jack. 7. Solder - side of mono jack to board ground (you can solder to a can).

    Ok if you are using a mylar style cap it doesn't matter which side of the cap you put to the board but just make sure it goes to the hole of C191 Closest to Middle of Radio. I used a Tantalum cap which has a +/- leg. Ok you will also need away of keying radio either a foot or hand switch or even a stock mic with audio wire unhooked. but these radios a 4 pin mic plugs so they are very easy to make a foot or hand switch. If you need any help with making a foot or hand switch please ask and I will help as much as I can. I will post a new post later with all my foot and hand designs for 4 and 5 pin radios. I hope this will help someone have fun and enjoy!!!
    Last edited by scooter71nc; 03-22-2013 at 03:09 AM.

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    inject

    can you do this with a stonewall jackson and if so can you pleas help me im tird of spending money on things and not geting what i want to hee thank you (jake)

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    Thanks for the info.
    Last edited by Silverado 996; 02-02-2014 at 10:51 AM.
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    Not to sound stupid but is direct inject what you are doing when you use a mixer and studio mic? And will this work on a pc66xl and a galaxy959 also?

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    Quote Originally Posted by halfwatt959 View Post
    Not to sound stupid but is direct inject what you are doing when you use a mixer and studio mic? And will this work on a pc66xl and a galaxy959 also?
    Look up direct injected galaxy 959 on YouTube. There a few cats on there laying it down.
    Silverado 996 back in the woods and I'm gone!
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    * Ranger 2970N2 * 5' FireStik FS-5 *
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    "It is not the strongest of the species that survives, nor the most intelligent, it is the one most adaptable to change, that survives"

    - Charles Darwin

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    Direct Inject is when you connect your audio gear output to the internal modulator of your radio,bypassing the internal microphone pre-amplifier and limiter

    People think that a mixer is needed to run audio gear but the reason that a mixer is used is because of the audio pre-amplifier built-in

    You can use a: microphone + pre-amplifier (solid state or tube) + equalizer + compressor/limiter connected to the microphone input of your radio or straight to the internal modulator

    When using the mic/input the internal radio microphone pre-amplifier needs to be modified to pass more audio bandwidth

    Hope this helps

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    I wonder how this would work on my HR2600. Anybody try it?

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    I'm also curious how this would work with this mod below, or am i bypassing it by direct-injecting? Goldfinger's HiFi mod for ept3600 series board

    Receive:

    C36: Change to a 2.2uF, 50 Volt (or better) mylar/polyester film
    C38: Remove for more highs
    C39. C154, C155: change to 2.2uF 50 volt (or better) Non-polarized electrolytic or mylar/polyester film
    C157: Change to a 2.2uF, 16 Volt (or better) tantalum (observe polarity)

    Transmit:

    C129: Change to a 10uF, 16 Volt (or better) tantalum (observe polarity)
    C187, C191: Change to 2.2uF, 50 volt (or better) mylar/polyester film

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    Whats the differences in the type of cap, and the values used for this mod? I just used a 10uf electrolytic.

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    radio's using EPT069611A board ( 2547, 939, 949, 959,) process same as above except location is c235. If using polarity type capacitor neg. lead goes to switch, positive lead goes to vacated hole at c235 closest to middle of board ( component side up )Name:  20170116_103253.jpg
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