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.

Super Swing and That Channel 6 Sound

Discussion in 'CB Radio Modifications' started by ButtFuzz, Jun 9, 2009.

  1. ButtFuzz

    ButtFuzz
    Expand Collapse
    Anti-BS Advocate ● N4REV ● Reverend Doctor

    Joined:
    Aug 11, 2005
    Messages:
    428
    Likes Received:
    66
    ... here's a blast from the past... it was somehow lost in the archives prior to 2005. This modification gives you variable power on Galaxy and Galaxy Clone radios without VRF by using the RF Gain control. One of my earliest posts... Enjoy!

    "Super Swing" Superstar Grant.
    aka Superstar "Gr"

    Standard disclaimer: These modifications (and radios and HF linear amplifiers mentioned herein) are not legal nor type accepted for use on the Citizen's Band in the US of A. They are for educational purposes only. One other note: I realize that most, if not all, of the modifications I write about can be performed by alternately drilling a hole somewhere in the radio and putting a switch or pot therein. I'm just not into that sort of thing. I like for my radio to look 'stock', if that is possible for some 'big ole' export radio.

    I am going by memory here, so screwdriver expert beware. If you break it, YOU broke it.
    (This modification works on just about any Galaxy / Galaxy Manufactured or Korean/Japanese manufactured clone thereof.)

    In writing about his modification procedure, I'll be assuming a few things:
    1. Your radio is built like just about every Galaxy radio on the planet.
    2. It is similar to the SuperStar 3900 GT and
    3. It has dual final output transistors. (10w AM Model).
    4. It does NOT have variable RF Power accessible from the front panel.

    Most folks I talk to and sources I have read do NOT recommend a 'swing kit' in this type of radio because of the good to excellent modulation properties and resultant swing inherent in this type of radio. I agree.

    Here is a modification you can do that will give you:
    1. QRP ((super) Low Power Mode)
    2. Variable RF output adjustable from the front of the radio and
    3. A kind of 'super swing' mode, especially when teamed up with a small
    linear amplifier in the 200-250 watt range.

    Here is what you will LOSE: Adjustable RF Gain control.

    All righty, here we go. The short version of this whole exercise is this (for those of you who want to get right at it): Make sure the audio limiter is intact. Turn the Mod pot all the way up. Remove wires from RF Gain control and wire so that RFG control is always wide open. Remove AM POWER Pot from radio and wire the RF Gain control such that it is now the AM Power Pot. That's about it!

    Details and commentary of this hack job are as follows.

    The first thing you must realize is that you will LOSE the ability to attenuate the INCOMING RF signal to your radio. In other words your RF Gain control will no longer function. So what? most of you ask. I never use that thing anyway!!! (Me, too.)

    If TR32 (The audio limiter transistor or 'mod shunt') has been removed/negated in this radio, PUT IT BACK.

    Find the Modulation control for AM, which is typically VR14 in this style of radio. Turn it all the way up. You can tell which way to turn the pot by observing a wattmeter or SWR meter whilst turning the pot and saying 'ahhhhhhhhhhdeeeeeeeOOOOOOOOOOOO'. Turn this pot until the needle deflects the maximum amount.

    Next, find the RF Gain potentiometer on this radio (it's on the FRONT and has a shaft sticking through the front faceplate and is controlled by the knob marked 'RF Gain') and note the wires attached thereto. Usually they are gray, red and black. Unsolder the wires from this potentiometer. You will now need to determine which two of the three wires you have just unsoldered, when touched together, turn the RF Gain control to its 'always wide open' position. Do this by turning the radio to a busy channel (19?) and observing the meter and listening to the audio through the speaker. When you touch two of the wires together, the needle will deflect to the right with an incoming signal and you'll hear the audio through the speaker. Solder these two wires together and protect with shrink tubing or black electrical tape. Also protect the remaining wire in similar fashion, as we don't want it flopping about inside the radio wreaking potential havoc. (no pun intended.)

    The next step is documenting the AM power potentiometer and de-installing same. Locate the AM Power control pot on the main circuit board of the radio. It is usually VR13 in the Galaxy-type radios. Turn the pot to about 50%. Key transmitter, making mental note of Deadkey. Make note of any resistance markings on this potentiometer. (normally 5K). Get Volt-Ohmmeter (VOM). Range of VOM should be set to about 20v DC. Attach black lead to chassis ground. With radio in the ON position, Mode AM and in RX , measure (and take note of) voltages at three connection points of VR13. You should measure something like: 0v, 14v and ~8v. The two points with +DC voltages we will call HOT. The 0v we will call Ground. REMOVE THIS POTENTIOMETER FROM THE RADIO BY CAREFULLY DESOLDERING IT.

    Now that the AM power pot has been removed, you will need three wires, ~20ga and ~10" long. Locate the RF Gain control potentiometer you desoldered the wires from a few minutes ago. (I'm now assuming the radio is positioned such that the control shafts on the front of the radio are pointing toward your belly.) Run a wire from either one of the HOT connection points where The AM power potentiometer was on the circuit board the the leftmost connection on the RF Gain potentiometer. Run a wire from the other HOT connection of the previous AM power pot to the middle connection of the RF gain potentiometer. Solder a third wire between the GROUND connection of the previous AM power pot to the remaining (rightmost) connector of the RF gain control potentiometer.

    At this point, your RF gain control should now act like a variable RF POWER control on the front of your radio. COOL! Turn radio on, turn linear off, Mode should be 'AM'. If you've done everything right, turn 'RF Gain' control clockwise and the wattage should increase accordingly on your wattmeter. If turning the RF Gain control clockwise results in DECREASING power output, you have the leftmost and rightmost leads on your RF Gain pot reversed. Desolder these connections, reverse and re-solder.

    If you hear popping noises or get NO power output whilst testing, something is wrong. Check your connections. Pray.

    You should notice, as a byproduct of this exercise, that you may now turn your AM/FM power WAY down into the milliwatt range when you dial the RF Gain control counterclockwise. Why does this work? Typically because the RF gain pot can inject about 10Kohms resistance whereas the AM power pot could only muster about 5Kohms resistance. As you increase the resistance by turning your RF Gain control counterclockwise past the 5K resistance limit of the old AM power pot, the wattage drops EVEN FURTHER than possible with the internal adjustment. I love this country.

    FYI, to control 'swing' on SSB, your Mic Control should effectively do that, as it always has in the past. By limiting the amount of audio input, you will limit the RF output on SSB.

    Now for the fun part: The 'Channel 6 Super-Swing Mode'!!!

    Hook up radio into your system as Normal.
    Mode: AM, Channel: 6 (or channel of your choice)
    Linear: (~225 watt) in whatever power mode (L/M/H/WFO) you like and in the ON position.
    Wattmeter installed between the linear and the antenna. Range: low position (~20w)
    Your new RF 'Gain' control in the minimum (fully counterclockwise) position.

    Key Radio. (linear relay will probably NOT engage. That's OK)
    Turn RF Gain control SLOWLY clockwise until linear relay engages and reading on Wattmeter is about 2-3 watts.
    Increase range of Wattmeter to ~200.
    Speak into microphone: AaaaaaaaaaadeeeeeeeeeOOOOOOOooooooooooo.
    Notice huge swing, from about 2 to 150 or so watts. Now that's a swing!!!
    Now you've got that patented 'Channel 6 Sound (TM)'...

    Other cool things to do with this mod:
    1. Talk to the guy across the neighborhood without the linear in super low power mode. People will think his CB has some kind of super-duper-ears kit in it.
    2. Whilst using an Antron 99 and low power, tell the receiving station you are going to 'turn the beams around and point 'em at them...', then SLOWLY rotate the RF Gain control clockwise. (do NOT overdrive the linear). Your signal will seem to come out of nowhere as you increase your carrier power from 1 watt to 100 watts or more (measured post-linear).
    (Please, no lectures on S-units here...the object is a slow increase in signal strength, which you will achieve. If you've got a much bigger linear and can make their S meter go from 1 to 30+, good for you.)


     

  2. Challenger

    Challenger
    Expand Collapse
    Member

    Joined:
    Jun 4, 2009
    Messages:
    31
    Likes Received:
    0
    While reading your post i almost broke a hip from falling off my chair laughing so hard. I would of never though of that. Seeing as i have way too much free time lately i,m gonna take a mobile i have here and do exactly that. Reason being is that i have someone in my town that will think a new boss has come to town. My grandson will be the voice of the "new" rachet jaw. (i use a golden eagle m111). If all else fails we may even put him out in the yard with his talkie and talk some skip. I have to give you a 10 for this one. You made me open up a side i forget i had. Thanks!
    Patented channel 6 swing hi hi.
    Challenger(y)
     
  3. 555

    555
    Expand Collapse
    Active Member

    Joined:
    Mar 17, 2006
    Messages:
    424
    Likes Received:
    15
    i run on 6 and i dont do the swingthing
    and im for sure the windsheild wiper mode wont get your name called
    superbowl is all about deadkey and who can drop the biggest hammer.

    if you come to 6 with the swing thing then you just as well get on the porch with momma and sit in her swing

    if i deadkey 1500 bird and swing 4500 is this a swing thing
     
  4. ButtFuzz

    ButtFuzz
    Expand Collapse
    Anti-BS Advocate ● N4REV ● Reverend Doctor

    Joined:
    Aug 11, 2005
    Messages:
    428
    Likes Received:
    66
    Time for a revival!
     
    wavrider likes this.
  5. wavrider

    wavrider
    Expand Collapse
    W9WDX Amateur Radio Club Member

    Joined:
    Jun 2, 2009
    Messages:
    3,007
    Likes Received:
    813
     
    ButtFuzz likes this.
  6. 9C1Driver

    9C1Driver
    Expand Collapse
    Sr. Member

    Joined:
    Aug 13, 2008
    Messages:
    2,765
    Likes Received:
    621
    That should sound real good I would think. Usually on ch6 they would dead key 4000 and swing backwards lol.
     
    wavrider likes this.
  7. ButtFuzz

    ButtFuzz
    Expand Collapse
    Anti-BS Advocate ● N4REV ● Reverend Doctor

    Joined:
    Aug 11, 2005
    Messages:
    428
    Likes Received:
    66
    Note to self: I **love** when a piece of humor causes folks to "get serious" about Channel 6.

    May the RF Gods be kind to you today.
     
  8. Sarasota Slim

    Sarasota Slim
    Expand Collapse
    Active Member

    Joined:
    Nov 18, 2016
    Messages:
    175
    Likes Received:
    81
    Some folks just take themselves way too seriously.

    Kind of defeats the purpose of a hobby, if you ask me.
     
    ButtFuzz likes this.
  9. bassman21

    bassman21
    Expand Collapse
    Active Member

    Joined:
    Aug 1, 2015
    Messages:
    98
    Likes Received:
    36
    I love when someone with a properly turned, quality station comes in and drops the hammer on all those distorted and over modulated stations on channel 6.

    It reminds me of car stereo systems. People don't have a clue about crossover slope, subsonic filters, frequency response, SPL, ground loops, preamp voltage, Dynamat..... They think two 18's on a Walmart amp with no crossover sounds good till a real system puts theirs to shame.
     
    ButtFuzz and LeapFrog like this.
  10. jon666

    jon666
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 24, 2006
    Messages:
    830
    Likes Received:
    177
    why in the hell would anyone want to sound like ch 6 monkeys
     
    bassman21 likes this.
  11. ButtFuzz

    ButtFuzz
    Expand Collapse
    Anti-BS Advocate ● N4REV ● Reverend Doctor

    Joined:
    Aug 11, 2005
    Messages:
    428
    Likes Received:
    66
    Here
    We
    Go!!!

    All you gotta do is throw the popcorn into the lake, and the carp come to consume it.
     
  12. 543_Dallas

    543_Dallas
    Expand Collapse
    Sr. Member

    Joined:
    Jul 25, 2011
    Messages:
    929
    Likes Received:
    893
    That's the only way they will acknowledge me. I used to think I needed more watts but I was just talking to them all wrong.
     
    rabbiporkchop and ButtFuzz like this.
  13. rabbiporkchop

    rabbiporkchop
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 18, 2007
    Messages:
    696
    Likes Received:
    142
    I wonder how many of those Channel 6 guys have bothered to read page 17 of the Bird 43 manual? Screenshot_2017-03-23-05-58-06.png
     
    Onelasttime and ButtFuzz like this.
  14. bassman21

    bassman21
    Expand Collapse
    Active Member

    Joined:
    Aug 1, 2015
    Messages:
    98
    Likes Received:
    36
    Yep I noticed the same thing on channel 20 when those Illinois stations come in. When I put a little hood in my voice, start over modulating, start repeating myself and saying silly phases like "I just got down" they start answering me. I've also noticed some people in California seem to be selective in who they answer. I get way less responses from them than I do in other areas. Not sure if they are hating on Texas or what? I usually just brush it off that bigger stations I can't hear as overpowering me.
     
  15. 543_Dallas

    543_Dallas
    Expand Collapse
    Sr. Member

    Joined:
    Jul 25, 2011
    Messages:
    929
    Likes Received:
    893
    It doesn't have to be a hood voice. Just something ridiculous like. You tell that mud duck (insert handle here) to go make me a turkey sandwich with cheese and put some damn mayonnaise on it. If you make them laugh you will ually get acknowledged.
     
    rabbiporkchop likes this.

Share This Page