CB Tips and Tricks. Most of these will be categorized by radio brand and model. Watch for new content as I get.

Note: These are NOT copied from any other. They are the result of my own experience and research. Note: Some tips mention jumpering a diode with a piece of. This does increase the output by a watt or two PEP, but it also. If you experience this problem, remove the. Cobra 1. 48 GTL and F- GTLExtra Channels: Locate the MB8. Wire a single- pole, single- throw.

SW- 2 on chart), and another from pin 1. SW- 1 on chart). Click Here for a. Supertune: Many of you have asked about supertunes. I do not recommend modifying the 1. I have found that the best. However, there are a few mods. PEP and still keep decent quality.

CB tips and Tricks (Always Under Construction) Click here for a fun and FREE Online multiplayer game!!! CLICK HERE if this site has been useful to you. Nick Pope used to investigate UFOs and other mysteries for the MoD, and is a leading expert on conspiracy theories. He told MailOnline: 'We'll get through 23. It’s cake versus ice cream for Splatoon 2's first Splatfest and we’re streaming all the fun live on our Twitch channel. Come and join the mayhem!

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Change C1. 09 to a 3. Remove. C1. 74, and run a 1. C1. 74's position to the base of TR4. TR4. 1. Reset the. AMC level for 1. 00% modulation.

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Cobra 1. 40/1. 42 GTLExtra Channels: Replace the 1. Locate the MB8. 71. Isolate pin 1. 0 from ground (Cut the trace).

Wire. a switch from Pin 1. SW- 2 on the chart), and another from pin. SW- 1 on chart). You may need to re- align the frequencies. Click Here for a channel chart. Supertune: Many of you have asked about supertunes. I do not recommend extensively modifying the 1.

I have found that the best. AMC circuit left intact. However, there are a few. PEP and still keep decent quality. Change C9. 0 to a 3. Remove. C1. 19, and run a 1.

C1. 19's position to the base of TR3. TR3. 4. Remove R1.

For AMC changes, place 5k variable resistor from base of TR3. You can also try removing R1.

R1. 02. Change C9. Cobra 2. 9 LTD: Receive Boost: Locate pin 1. PLL chip, and. the Positive (+) side of C- 1.

Install a 2. 2k- 2. The smaller the value, the more the receive is. Use CARE when soldering to the PLL chip! If desired, this mod. Supertune: Replace the stock final with a 2.

SC1. 96. 9. unit. Solder a jumper across D8 (this may cause receive distortion at. Solder a 6. 8pf cap across C6. Solder a 6. 8pf cap across C5.

If. there isn't, use 1. Replace R 5. 5 with a 1. Replace R5. 8 with a 4. Set VR4 just a bit to the right of half- way open. If D1. 1. or C3 have been removed, replace them.

D1. 1 is a simple small- signal. C3 is just a 1uf electrolytic. If. TR1. 8 has been removed or cut, replace with a 2.

SA7. 33. Spread Open L1. L1. 6 for best swing, using a loud, steady. MAKE SURE to. use heat- sink compound (a very light coating is sufficient) when. MAKE SURE the final mount screw is.

MOSFET Supertune (2. LTD classic and newer): Replace. IRF5. 20 MOSFET transistor (pin- for- pin match when. Remove R5. 6 and in its place install a 4. Remove C5. 3 and.

C5. 9. In C5. 3's place solder a 3. Remove C. 6. 1 and solder it across C6. Remove R5. 5 amd solder a 2. Remove the slug from L1. Replace C7. 1 with a 3. Turn. VR4 (AMC) counterclockwise fully.

Gently spread L1. L1. 2 and tweak. the spreads for best PEP when modulated. Tweak L2. 0 and L1. PEP. when modulated. After tuning is finished, set VR4 to half- way. Note: Older 2. 9's (LTD and GTL) use the same basic.

C6. 2. a 6. 8pf across C5. R5. 5. Channel 9 switch to Channel 1.

Cut D3. 2. Hard, huh? Radio comes in TX mode without mic plugged in. Check C1. 17 and C1. Channel display goes dead on key- up, little or no.

Check TR2. 3 for bad part or bad solder joints. Also check. C1. 19. Cobra 2. 5 LTD: Supertune: Replace the stock final with a 2. SC1. 96. 9. unit. Solder a jumper across D1. Change R4. 3 to 4.

Remove. C1. 49. Place 8. C 4. 6. Place 3. 3- 6. C4. 2. (select for best output). Set VR5 half- way open.

If D9 or C6 have been. If TR1. 4 is cut or missing, replace it with a 2. SA7. 33. unit. Spread open L8 a bit, and adjust L1. MAKE SURE to use. MAKE SURE. the final mount screw is tight!

Optional: For more mic. R7. 6 with 1. K ohm.

Channel display goes dead on key- up, no transmit. Check C9. 0 or C1. Cobra 1. 9 Plus, 1. DX, 1. 9 Ultra (and other brand/models. Supertune: Replace the final with a 2.

SC1. 96. 9 unit. Solder a jumper across the diode going from the Audio Transformer to. Driver and Final (this may cause receive distortion at high. Solder a jumper across the resistor. Final to the Driver. If a diode has been cut.

Adjust the. modulation control POT (VR) for 1. Tune output coils for best swing, using a loud, steady. Note: These. radios are superb for clarity of modulation, even on the stock mic. Cobra 2. 00 GTL- DXEcho mod: NOTE: Previously there was a part number error in this. I originally listed R3. That was a typo. The.

If you changed R3. K to maintain receiver integrity. R5. 50 controls the delay of the echo (speed of the echo). By changing it to a lower value, the delay is decreased.

Higher value. (obviously) increases the delay. Values below 1k would be inadvisable. I've not experimented with a max value yet, but a couple hundred K. If you want, you can put a 1. K. pot in place of R5. Keep a 1k fixed resistor in series.

POT. Mic Preamp Mods: 1. R1. 81 is the feedback resistor on the 4. IC. It is 1. 50. K.

Change it to anything from 4. M. This will allow much more. As with the. talkback mods and echo mods, use hot glue on the parts you install to. Values above 1. M will be problematic from a.

K is likely going to give more than enough. C1. 58 controls the speed at which the AMC circuit. To speed up this circuit (and thereby give more even. If you go. much lower than 1.

Galaxy 3. 3- 8. 8, Connex 3. Supertune": Change R1. Peak L3. 1, L3. 3, L4. L4. 2, L4. 3, L4. L5. 1, and L5. 2 for best. Set carrier. control pots as normal for high and low power levels.

For louder. cleaner talkback, solder a . J2. 5 (small wire jumper in front. TR3. 2 on parts side of board, near the mic socket). If you use a. resistor higher than 1. Experiment a bit for best resuslts.

If. desired, you can replace R2. NOTE: this can. increase the possibility of feedback in hot operating conditions, but. Astatic 6. 36. L. If feedback occurs after warm- up, nake sure the AM. FLUSH against the chassis.

AMC Mod: Change C1. TR 3. 4) from 1. 0uf to 4. This. makes the AMC action much snappier, and gives better average loudness. Galaxy 8. 8 (old)Frequency Counter Noise: (applies to all older model. TC5. 03. 2 IC to the nearest ground point. Should eliminate.

TRF Gain Mod: Locate R7. L5 (first. receive coil, the one without a metal can on it), and run a wire from.

Its that simple. For. RF gain to work, the radio's 4. If you use. more than a 1k pot, I recommend running the POT in parallel with a 2. If you have a 2k or 2. General Galaxy Tips. SSB models AM/FM receive problem: If AM/FM. D4. Half- channels (+5khz): Cut front trace of crystal.

X2 and solder 5. 6- 6. PF cap across cut. Use switch across cut to switch. Supertunes: There are a couple general items that. First, replace. the stock final with a 2.

SC1. 96. 9 transistor. Second, locate the resistor. Third, locate the diode running from the Audio output. These mods generally do not apply to sideband radios, most. Some readjustment will be needed, and. Experiment CAREFULLY!

Variable Power: This modification can be made to. Click Here. to see the diagram of the add- on circuit. Clean Modulation: All radios come from the factory. The purpose of this circuit is to keep the radio. Many shops remove this limiter to obtain a high.

If this circuit has been disabled (usually by. Once enabled, adjust the modulation control. Use a good oscilloscope to judge. If the. radio does not have a modulation control trimmer on the board, you can. Select a value that yields just over 1. Excess noise in trucks with electric/electronic fuel.

Purchse Radio Shack part number 2. This trick will also work with. Examples of this type of injector noise problem occur very. N1. 1/N1. 4 Cummins motors. R- Model Mack Trucks: Occasional ground problems with. Use the Wilson "Silver Load" antenna, 4- footer, with.

RG- 8. X coax, and tie the antenna's false- ground lead to one. You'll need to crawl up and down a ladder. New- Model Freightliners and Volvos (With antennas located in.

Setting up a reliable antenna system. You can set the truck up for either single. Remove the front mirror housing by removing the two. Watch Open Season Online Fandango more.

Locate the existing antenna mount and coax.

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