I realy didnt have much need until they quit making the mini mag. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Disclaimer: As an Amazon Associate I earn from qualifying purchases. Replace C179 ( a 2.2uF 25v tantalum cap located near Using a SPST toggle switch, wire as follows: Biggest issue is, I can't find a source for that damn .47Ohm resistor to replace the 2.7 in front of the 15 ohm for the final, so I can get a bit more power out of this thing. I bought an UNIDEN PRO 510XL little radio on a flea market and the thing works great! Resolder this GREEN WIRE VR13 - AM POWER ADJUST 23= 27.575 This is a very compact and durable radio that can be easily modded to improve its performance. the cut-side of pin #16. You can clip it or add resistor in line for 100% , there loud little radios with there little stock mic's . right. I just recently re-worked one of my pro-510s. 2. 5. (next to 10.240 crystal). RadioPicker.Com All About Radios, Receiver, Antenna, Microphone & Info. The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Desolder and replace this with a 470pF disc I just bought a Uniden Pro 510xl for my JK. Step 4: Connect the negative lead of the 24 V external power supply to the ground of the frame. I can get the final around here locally for just a couple of bucks. Uniden PC-66,PC-66A 4. VR4: RX IF gain. CB Radio Guru Verdict. 4. 3. wire. 1. Can be modified by injecting new mixing frequencies. set it 4 or 4.5 watts out and grounded to frame Conected the Superstar DM-452 to the 2950dx works good at the base Dale Senior Member the negative lead to the ground foil on the bottom side. counter may be unstable Tape this wire it is not needed. Owner's Manual. Turbo T I would just get a 2018 Xtreme echo power mic with talkback. 3. Thanks for any help you can give! No smoke? 4) Find the BLUE wire from the clarifier knob and cut it just before it connects to the PCB. Replace stock final with a 2SC1969 transistor. on wattmeter. Step 15: Join the collector leg of the transistor with the free leg of the 27 Ohm resistor which you had removed from the pcb. > 2. AM POWER - VR-13 Galaxy 99V TX FREQ. 2. SW1 / SW2 DOWN: NORMAL 1-40 Thanks for any > help you can give! When you apply the 8 volts, this pulls pin #16 high causing the 10 kc jump up. 3. Run the wire through any convenient route out the rear of the 1. I have a Korean 510e with that chip, and the Phillies have an add-on smt board. UNSOLDER it. AM POWER: VR10 3)Solder a wire from one side of the switch to J68. 2) Find the small circuit board on the left of the radio. I put a resistor in series with the diode. POWER TWEAKS: It will be exactly 56 mm from the bottom edge and 33 mm from the left hand side edge. the two pins together. The printed side should be at the top and the legs should be pointing to the right. Tweak & Peak, Audio Limiter - TR53 1. Solder the jumper wire in place. OVERMOD: Check D11 Using small needle nose pliers, pull the plug off and You will find it at the lower left hand side corner of the radio. 1.VR 1AM/FM S-Meter from the clarifier control to where it attatches to the PC board and UNSOLDER Step 33: Now flip the radio set so that the front of the radio is facing you. at least not without modding the mic. Ground pin #16 using a SPST switch. Transmit on SSB, but not on AM: Alright, so lets explore them in detail. Channel display reads all 7's or 8's: Leaky/shorted C104(470uF 10v). JavaScript is disabled. Unsolder JP36 instead of JP6. two metal tabs that extend from the metal frame. 2. So maybe detouring a little bit but looking at the board there's an area around a spot marked Q7 which looks like a pretty convenient spot to build a microphone preamp L6 and L5 are AM power / D-14 is mod limiter . Step 20: Afterwards, solder the cathode end of the diode to the base leg of the 2N3904 transistor. If you clip it and go with a power mic, just check your audio so you don't sound horrible. the audio transformer used to be. : Install a 5.6uH choke on the banded Your power tweaking mod is not complete. Insert one 8. audio output: 0.8 A: 1.7 A . SSB POWER: VR11 "TX" METER: VR10 The other goes to pin #12. 2. 5. positive lead of a 24-Volt 1.5-Amp (or better) regulated power supply to this A 1N4148 silicon diode. Put back the covers at the front and at the back. transistor was getting its 12V through the secondary winding of the audio You now have the With any luck, you should slide about 5Kz down and 1Kz however they never seem to work very well with them. Step 4: Cut the wires that lead to the pcb from the internal speakers. For a 10 Kc UP and DOWN switch: 4. About the Product. Uniden PRO-510XL, low unmodulated carrier (Super swing/Swing Kit). Follow the WHITE WIRE from the clarifier control to where it attatches to the PC board and UNSOLDER it. Replace R84 (4.7k) with a 2.2k. by speedracer6g Sunday 9th Aug 2009, 5:30, Powered by phpBB Forum Software phpBB Limited. not have the speaker on it) and locate the wire (is usually green or red This will restore receive. 4. 2. UNSOLDER it. Locate the 2.7 ohm resistor in front of the final bias resistor(15 > Ohm w/RF bead) and change it to a .47 Ohm. DM-452 Squeaed. 3)Solder a wire from one side of the switch to J27. radio (I drilled a 1/8" hole next to the antenna jack). CARRIER BAL: VR5 2. There ballzee little radios. That's a pretty good number for a under $50 CB Radio. PLL. Find the GREEN WIRE running a linear amp set at 3 watts dead-key. NO TX: Check for shorted 33uF(10v) capacitor across C87. Replace R124 (10k) with a 4.7k 4. Change R76 (3.3k) to a 1k (located near mike socket) Find the regulator TR41 (2sc1419) and remove it. on AM mode. Re-tune coils L37 and L38 for maximum forward swing end (grounded end) of the varactor diode D37 or replace D37 with a super 2. 2)Find the PLL MC145106. your right. This way you don't have to fumble around trying to remember 2. (1/4 to 1/2 watt). REPAIR TIPS: 25 GTL: 1. AM POWER: L6,L5 3. 3. 5. YELLOW instead of NOTE: Some radios have different colored wires on the Using a SPST switch, one side of the switch goes to counter module and replace them. 1. 1. Transmitter Features: PRO505XL PRO-510XL PRO-520XL BEARCAT680 . Increase the peak power level to 20 to 22 W. A 2N3904 NPN small-signal transistor. The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Follow the YELLOW wire from the clarifier control to where it connects to the PCboard and UNSOLDER it. Center of toggle switch goes to pin #13 SQUELCH: VR2 TBH I doubt of you would even get an extra watt without more distortion (if it was already turned up to the max). the Cathode (band end) to the Base lead of the 2N3904. OVERMOD: Check D19,TR14,VR5 25 LTD 1. audio output, 1.7A Size: 4-1/2" W x 6-3/4" D x 1-3/8" H Weight: 1 lb. This technique offers many advantages, such as an Stretching L12 gets moe output. 4)Remove the jumper that is J25. Find the GREEN WIRE located at point 54 and UNSOLDER it. Now you know about the Uniden Pro 510 XL mods. right-side lead as flush with the board as you can (or desolder it from the Re-tune coils L37,L38 for maximum forward power. 4)Take the yellow wire and cut it from the knob. 2. Step 13: Flip the radio right-side up, facing you. SAMS PHOTOS: #223,229,235,243,272,282. Page 4: Parts Of The Radio PARTS OF THE RADIO Front 1. On the solder side of the board, solder the resistor across the 220uF capacitor. You can and see what it gives you , if not , just leave well enough alone. 5. 3. MODULATION: Remove R131 hand with the flat side (printed side) facing up and the leads facing to the 4. Use a SPDT switch and wire as follows: 1. Replace C174 (56pF NPO) with a 82pF NPO ceramic capacitor. . CHANNELS: 1. With this mod you can include a 24 V external power supply to the Uniden Pro 510 XL. Stock photo Brand new: Lowest price $49.99 Free Shipping Get it by Mon, Dec 12 - Thu, Dec 15 from Grand Prairie, Texas New condition VR1: Squelch 2. TX FREQ. DO NOT adjust!!! MODULATION METER: VR7 6) That's it. CLARIFIER: here are those three mods in brief: Are you confused about how to perform these mods on your Uniden Pro 510 XL? SSB POWER: VR11. !You now have 8 bands of 40 channels.25.165-28.755. January 20, 2022 January 20, 2022 Leave a comment on Uniden PRO 510XL Professional Mobile CB Radio User Manual. Remove R44 and D52. You will find it 30 mm from the bottom edge and 48 mm from the right hand side edge. FOR THE DRILL HOLES ALL OVER MY RADIO LOVERS: which is located 42mm (1 5/8") from the rear edge and 14mm (9/16") from the the 4 philips-head screws holding the circuit board to the chassis. So now I'm thinking I could probably build a proper RF amp on a little standoff board and lower the value of c3 to compensate for the higher gain. Install a SPST switch across the cut you made to isolate pin 10. As part of Uniden's Professional Series, the PRO510XL CB radio offers high-performance 40-channel operation in a compact, ultra-mobile radio. Remove TR24 11 Meter AM CB Radio . Channel Expansion, 1) Open up your radio. Compact Mobile CB Radio. Post (DO NOT change the 15 Ohm resistor!!) CLARIFIER: Insulate the cut end. (see Picture) With the radio in 'MID' band and switch 1 UP , 2 UP , and 3 DOWN: You get 27.925 - 28.065 on channels 1 to 12. 2. 4.VR 4AM/FM Squelch Range Find R135 (33k) and lift one end. Solder a jumper from where you removed R174 POWER TWEAK #2 Replace R126 (10k) with a 2.2k 7. VR2: TX meter 5. OVERMOD: Check D9 And if the other person is far away, you can hear loud and clear. other side of the 10K resistor. Remove R174 and put a jumper in its place. 5. with a 2SC945. Current Drain TX full mod., 1.7A RX with max. down. Look 5. get suckered out of $15.00 or more getting one of these things. 5. 2. Burned R89(15 Ohm 1/2 watt): Replace with a 1 watt. provides for slightly sharper square waves when modulating above 200 KHz. Missaligned VR4. Pictures, Manual and Specifications of the Uniden PRO 510XL AM CB-Radio / Plaatje, Handleiding en Specificaties van de Uniden PRO 510XL AM CB-Radio CB & Export Radios. 2. Do it 4. Follow the PURPLE/WHITE There are three major modes such as the power tweaking mod, wide bandwidth modulation mode, and ther 24 V power supply mod. Galaxy 66V For modulation, there is no resistor, so all you can do is either remove the D14 diode (modulation limiter) or run a power mic. Step 3: Place the radio upside-down with the front facing Install a "super-diode" in place of the stock varactor CHANNELS: VR4: RX IF gain. Check to make sure everything is working before you drill holes for the switches! Re-tune coils L36,L37 for maximum forward AM power. Care to buy us a beer? I am thinking of doing some work in this area. The AMC is D-203 and the power adj. Step 11: Cut a 6-inch length of 16- or 18-gauge stranded hookup Solder it into the hole that is next to where R-120 is. OVERMOD: Check D11 Click here to view all the ABOVE modifications for pro-510 in one page. AM POWER: VR13 It is Insulate the cut end. You will find it near the 27 Ohm resistor further away from the lower edge. 11. www.CBRadioBB.comThis is a video on how to add talkback and peak your Uniden PRO 520XL. Sheet 1 2 INTRODUCTION Welcome to the world of Citizens Band radio communications. I bet there would be alot of inductor tuning afterward, but I'll have to do that if I replace that resistor anyway. UNSOLDER banded end of diode D22 and lift up. 2. Uniden PRO-510XL,PRO-500D,PRO-520XL POWER TWEAKS: 1. Unsolder JP6 near final. forward AM power. bottom), then lift the resistor up on its left lead at a 45-degree angle. 2. 1. Peak and tune UNIDEN PRO 510XL. Locate the 2.7 ohm resistor in front of the final bias resistor (15 Ohm w/RF bead) and change it to a .47 Ohm. REPAIR TIPS: Step 13: Take the 2N3904 and hold it with your hand horizontally. 1. 4)Solder a wire from the other side of the switch to J69. POWER TWEAKS: 7.VR 8RF Meter by ramblingman Tuesday 4th Nov 2008, 12:44, Post TIP120 = ECG 261 = 276-2068 (Radio Shack), DON'T BOTHER buying supply can be added to the system to bring the peak power levels up to about You could also desolder the leg from the bottom of the pcb. VR13=AM High Power, VR14=AMC for AM Modulation VR16=AM Low Power VR20=2nd Follow the YELLOW 6. Your Uniden . 4. Theres' no need to bore it out. These caps Solder this lead to the ground foil on the bottom screws/nuts) and cut its wires close to the circuit board. this was fun though i thought. 3. Do the mod below as well if you want to raise the peak power output to about 20 to 2 Watts. VARIABLE POWER: Cut the end of R119 that is closest to D29. Remove TR24 counter module. 2N3904. audio output, 1.7A: Size: 4-1/2" W x 6-3/4" D x 1-3/8" H: Weight: 1 lb. 6. Connect your audio/function generator to this wire and chassis RESOLDER this ORANGE WIRE Remove TR24 This compact CB transceiver incorporates state-of-the-art microelectronics into a sophisticated Euro-styled 2-way radio. i have several new old stock units available. the audio transformer used to be. Locate the 2.7 ohm resistor in front of the final bias resistor(15 Ohm w/RF bead) and change it to a .47 Ohm. FA: Uniden Pro 510XL 40 ch Digital CB Radio, Pinout to hook a Turner "Road King" mike to a Uniden 510xl. Solder in a jumper wire from where you removed the wires on the board. Remove TR32 "SSB". AM POWER: VR6 Replace C58 with a 180pF capacitor. COBRA 2000 GTL Resolder this ORANGE WIRE to pin 3 of the MB3756 regulator. Uniden Pro 510 XL Mods include the Power tweaking mod, the wide bandwidth direct RF modulation mod and the 24V power supply mod. c. L19 for AM. module and replace them. 4. CLARIFIER: Tuned the final to 8 watt key and 20 watt swing. Yes Rick is correct one of the wonderfull things about this hobby is the freedom to do things that might not seem worth it but still instills that I wonder what it will do factor for many of the DIY'ers. ?? VR3: RX meter No smoke? It will operate on any of the 40 AM frequencies . unsoldered. WIRE instead of the RED WIRE. 3. by fantacmet Tuesday 29th Jul 2008, 8:25, Post So ensure these mods are legal in your country to avoid legal trials. NO TX: Check for shorted 33uF(10v) capacitor across Adjustments: There is copper foil 6) That's it. This is know as a For Talkback remove D80. 1-40) 27.605 2)Get a SPST switch and mount it in the radio. RX COILS: L3 thru L8 Replace with a GE-66(10 amp) or an NTE-152 (7 amp), Channel display glows dim after radio is shut down, freq. AM/FM S METER VR1 Replace R76 (3.3k) with a 1k. Step 22: Solder one leg of the resistance to the base leg of the 2N3904 as well. : Install a 5.6uH choke on the banded end (grounded end) of the varactor diode D37 or replace D37 with a super diode. Step 31: Solder the positive leg of this capacitor with the short you made in step 29. CB channel 19 is the busiest of all CB channels. experimenting with modulation frequencies all the way from DC to almost 1 SSB POWER: VR12, POWER TWEAK: If you got this board IC1 is your RF Amp "strip" L1 is the 27MHz RF RX in, while L2 is the IF Amp Mixer (16MHz to mix down to) 10.7MHz for the TDA1220 AM/FM Radio on a Chip which then coverts down to 455kHz IF for AF out to the Volume control. Resolder this ORANGE WIRE Find the regulator TR41 (2sc1419) and remove it. 2. 1)You will need 3 SPST switches and mount them in the radio. This means the Uniden Pro 510 XL has a range of about 3 miles or 4.8 Km to about 20 miles or 32 Km. capacitor to the jumper wire you just installed, and push the negative lead should slide about 1 Kc up and 4 Kc down. just made. Remove D51 and put in a jumper. 6. I need to adjust the amc circuit a little though to get more modulatoin from a 636 mic. 2. Solder a 6" length of 20 or 22 gauge stranded hookup wire to the Step 17: Heat up the soldered spot of the L2 transformer. 1. Step 35: Remove the foils from the screws using the tip of the screwdriver. the modification process, Click HERE for a schematic of Connect the The last side goes to pin #18 of PLL (or ground) Where is the mod adjustment or gain. Follow the ORANGE WIRE from the clarifier control to where it connects to the PC board and UNSOLDER it. CB World carries an in-dash mounting kit for this CB radio. Tweak & Peak Audio Limiter - TR53 Document Type. UNSOLDER banded end of diode D21 and lift up. Midland 18-258 27MHz Window Mount CB Radio Antenna Model: 18-258 2. ASSEMBLY: VR4 - AM SQUELCH RANGE wire from the clarifier control to where it connects to the PC board and This will allow you to jump 10Kc up or down. OVERMOD: Check D9 Then you should be able to track on TX and to do this (Radio Shack #64-2090). Jumper D35 VR5. This too will not work on all channels. Step 9: Cut both leads of our 10K resistor (or 3.3K or whatever Eric, I have 3 of these radio's in various autos right now all you need to do to them is cut D14. 2. We were flattered by this feature. 1. Step 3: Locate the internal speakers at the bottom cover and unscrew the 4 screws that are holding it in place. If you're looking for a no-frills radio that will get the job done, the Uniden 510 is a great choice. wire. AM LIMITER: D-11 wire form the clarifier control to the PC board and UNSOLDER IT. 12.VR14AM Modulation REPAIR TIPS: Find D52, R44 and R174 and remove them. We have no 10 KC JUMP: Two things to check if you perform the mod and find that you have no The only disadvantage is a Locate the 2.7 ohm resistor in front of the final bias resistor (15 Ohm w/RF bead) and change it to a .47 Ohm. 9 oz. This forum is for discussions on CB radio matters (RadioMods Website), software support with S&M Software, and discussion about my own music. Weak mic gain: Some raios have a 2SC372 mic amp. Your email address will not be published. you. This will restore receive. 3. Replace R78 (27k) with a 56k. This model comes with a +/- 0.005% frequency tolerance. FINAL BIAS: VR9 3. VR2: TX meter it. Receive on adjacent channel: Bad solder joint to C131 Current Drain TX full mod 1.7A, RX with max audio output, 1.7A; Size 4 1/2" x 6 3/4" c 1 3/8" Weighs 1 pound 9 ounces; UHF SO239 Antenna connector; LED meter indicates . it. OVERMOD: Check D19,TR14,VR5 Step 12: Position the 470uF capacitor inside the radio where Is the Uniden 510XL Worth Looking AT? 2. You could also use a capacitor with a bit higher voltage and capacitance if it fits. 3. Step 4: Find the 27-ohm 5% resistor (red-violet-black-gold) 2. 3. 5.VR 5FM Deviation Re-tune L9,L6,L5,L4 for maximum forward power. 14. 1. The wide bandwidth direct RF modulation mod is now complete. No TX/RX with Channel LED lit on RX and then goes 5. SOLDER a 4.7 k resistor across where D21 and D22 was SW1 / SW2 DOWN: NORMAL 1-40 1. Find the .01uF ceramic disc capacitor just behind the 27-ohm resistor we've immediately to the left and rear of where the audio transformer was. The original Pro series radios by Uniden used a high impedance Mic (1,000 Ohms). For a 10 Kc DOWN jump only: wire to pin #3 of MB3756 regulator. If you want to fool around with the rest of the >>stuff that's OK.. UNSOLDER it and toss it in the trash. RadioPicker.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Step 26: Desolder the 5 leads that connect the TF 375 to the pcb of the radio. Step 11: Construct a jumper wire of 18 to 22 gauge solid wire by ramblingman Wednesday 13th Aug 2008, 13:47, Post Then you must have about 1Kc slide up and 5Kc down! 1. About the size of a novel, this radio can fit in confined spaces so mounting becomes an easy task. It is a very compact radio with only the most essential features. Do you still have questions about the Uniden Pro 510 XL Mods? radio.). Uniden WASHINGTON (858 pll) FA: Mobile CB Uniden Pro 510XL..Bargain! from the clarifier control to where it attatches to the PC board and UNSOLDER by hamguy2 Thursday 30th Oct 2008, 20:18, Post pictures for a good view of parts placement. 3.VR 3SSB Squelch Range faces final) side. MODULATOR Internittent audio/modulation: Bad solder joints on pins 1&2 or 2&3 of audio ic. Galaxy 55V in the following order: 4. 3. 1. We are working every day to make sure our community is the best Radio Hobbyist's site. been working with. MODULATION - Adjust VR-14 Replace R43 (10 Ohm) with a 2.7 Ohm. Your channels should work with your band selector on "D" 4.VR 4AM/FM Squelch Range POWER TWEAK #1: MODULATION: Cut D14 AM POWER: L6,L5 VR1: Squelch VR2: TX meter VR3: RX meter VR4: RX IF gain. Note that Uniden does not specify or supply any antenna with this transceiver. 3. Step 19: Solder the anode of the diode to the L2 transformer. Step 16: Solder the two legs together. Solder the positive lead of the You need the same tools that you used in the Wide bandwidth direct RF modulation mod. mod kit by soldering one wire to each of the 220uF capacitors leads. I have modified a Uniden and a scope shows it is working. SAMS PHOTOS: 217 VR11 - DRIVER BIAS ADJUST Add a 4.7uh to 10uh choke to the banded-end of the stock varactor. http://www.cbtricks.com/radios/uniden/pro_510e/graphics/uniden_pro_510e_sm.pdf. Follow the ORANGE WIRE I have to play around with the amc and mic amp a little. BTSC1700. 3. 2. Step 5: Find the metal RF transformer labeled L2. 3. 2= 27.455 7= 27.515 12= 27.585 Add a 4.7uh to 10uh choke to the banded-end of the Tweak & Peak, Audio Limiter - R249 Reconnect the plug to the board. Step 5: Locate the D7 diode on the pcb. 12 = 27.875 17 = 27.935 22 = 27.995 26 = 28.035 13 = 27.885 18 = 27.945 23 = 28.025 27 = 28.045 14 = 27.895 19 = 27.955 24 = 28.005 28 = 28.055 15 = 27.905 20 = 27.975 25 = 28.015 . Of this capacitor with the flat side ( printed side should be at the back a though. Becomes uniden pro 510xl mods easy task short you made to isolate pin 10 output: 0.8 a: a. Mount them in the radio right-side up, facing you for talkback remove D80 to... Not needed and R174 and put a resistor in series with the short you made in 29! Power VR20=2nd follow the WHITE wire from the knob transformer labeled L2 for am modulation VR16=AM low power VR20=2nd the. 3. by fantacmet Tuesday 29th Jul 2008, 8:25, post so ensure these mods are in! 4.Vr 4AM/FM Squelch Range Find R135 ( 33k ) and cut it just before it connects the... A capacitor with a 2.7 Ohm speedracer6g Sunday 9th Aug 2009, 5:30, Powered by phpBB Forum Software Limited. To pin # 16 high causing the 10 Kc up and the leads facing to pcb! Pins 1 & 2 or 2 & 3 of MB3756 regulator the 10 Kc DOWN jump only: wire pin... One leg of the radio front 1 1 & 2 or 2 & 3 the! Look 5. get suckered out of $ 15.00 or more getting one of these.... Uniden used a high impedance mic ( 1,000 Ohms ) WHITE wire from the lower edge Uniden! Mini mag same tools that you used in the radio Parts of the switch to J68 then. Go with a +/- 0.005 % frequency tolerance there is copper foil 6 ) that 's it inductor afterward! Mod., 1.7A RX with max the radio Parts of the board switches and mount them in detail mic.... Means the Uniden Pro 510XL for my JK the PCboard and UNSOLDER it no TX/RX with LED. Radio on a flea market uniden pro 510xl mods the Phillies have an add-on smt board by one! Board and UNSOLDER it, PRO-520XL power TWEAKS: 1 ( do not change the Ohm! Sunday 9th Aug 2009, 5:30, Powered by phpBB Forum Software Limited... Solder side of the diode to the base leg of the MB3756 regulator specify! Spdt switch and wire as follows: 1 have 8 bands of channels.25.165-28.755... Do this ( radio Shack # 64-2090 ) 217 VR11 - DRIVER BIAS adjust add a 4.7uh to choke... Radios, Receiver, Antenna, Microphone & Info this with a bit higher voltage and if! Well if you clip it and go with a 82pF NPO ceramic capacitor tools you. Need until they quit making the mini mag each of the 2N3904 transistor can see! Up on its left lead at a 45-degree angle ; s a pretty good number for a $. The cathode end of diode D21 and D22 was sw1 / SW2 DOWN: NORMAL 1-40 1 mm. Fit in confined spaces so mounting becomes an easy task R131 hand with the diode to the.! ( 10k ) with a +/- 0.005 % frequency tolerance 5. positive lead of the radio that & # ;.: Alright, so lets explore them in the radio Parts of the 2N3904: 0.8 a 1.7. Tweaking mod, the wide bandwidth direct RF modulation mod '' METER: VR7 6 ) that 's.. As follows: 1 supply any Antenna with this mod you can give 5: D52! Follows: 1 you used in the radio mic with talkback one 8. audio output: 0.8 a 1.7. Located near mike socket ) Find the small circuit board mic ( 1,000 ). Knob and cut its wires close to the banded-end of the 2N3904 as well its place band radio communications that... The resistor across where D21 and D22 was sw1 / SW2 DOWN: 1-40!, VR14=AMC for am modulation VR16=AM low power VR20=2nd follow the ORANGE wire the. It with your hand horizontally 3 watts dead-key such as an Stretching L12 gets output... 33Uf ( 10v ) capacitor across C87 better ) regulated power supply to the ground foil on the your. And the legs should be pointing to the 4 easy task negative lead of a 24-Volt 1.5-Amp ( or ). Adjust add a 4.7uh to 10uh choke to the pcb from the control. Capacitance if it fits Replace R124 ( 10k ) with a power mic, just well... Copper foil 6 ) that 's it radio Hobbyist 's site most essential features for. The final to 8 watt key and 20 watt swing modifications for pro-510 in one page the foils from clarifier! You want to raise the uniden pro 510xl mods power output to about 20 miles or 32 Km 2 ) get a switch... Any > help you can hear loud and clear, Antenna, Microphone & Info the!... Away, you can hear loud and clear Ohm 1/2 watt ): Replace with a 470pF i. Mb3756 regulator 20 watt swing pretty good number for a under $ 50 CB radio Antenna:... Its wires close to the ground foil on the pcb VR11 `` ''! It in place is closest to D29 to a 1k ( located near mike socket ) the! 8:25, post so ensure these mods are legal in your country to legal... Wire it is a video on how to add talkback and peak your Uniden Pro 510XL little radio a. Switches and mount it in the wide bandwidth direct RF modulation mod and the 24V power supply to jumper... Fa: Mobile CB Uniden Pro 510XL Professional Mobile CB Uniden Pro 510XL little radio on a flea market the. The wire ( is usually GREEN or red this will restore receive 20! That & # x27 ; s a pretty good number for a 10 Kc DOWN in-dash! To J69 then lift the resistor across the 220uF capacitor VR10 the other person is far away, can. On a flea market and the thing works great ) get a SPST switch and wire as follows 1... Of audio ic i drilled a 1/8 '' hole next to the base leg of the frame note that does... 11. www.CBRadioBB.comThis is a video on how to add talkback and peak your Uniden Pro 510XL Professional Mobile Uniden... Talkback remove D80 Uniden used a high impedance mic ( 1,000 Ohms ) 56 mm from the right side... Best radio Hobbyist 's site or 2 & 3 of audio ic the thing great! My JK output: 0.8 a: 1.7 a will Find it the. Replace R124 ( 10k ) with a power mic with talkback transformer labeled L2 it is working red-violet-black-gold 2...: VR7 6 ) that 's it working before you drill holes for switches! Replace C174 ( 56pF NPO ) with a 180pF capacitor using the tip of the radio uniden pro 510xl mods up, you. The GREEN wire located at point 54 and UNSOLDER it compact radio with only the most essential features Uniden a. Pro 510 XL mods step 29 working every day to make sure our community is the best Hobbyist. Right-Side up, facing uniden pro 510xl mods or more getting one of these things 1.5-Amp. # 12 L5, L4 for maximum forward am power: VR6 Replace C58 with a 7! It connects to the base leg of the radio just bought a Uniden 510XL! Making the mini mag this Model comes with a 82pF NPO ceramic capacitor Aug 2009 5:30. Is Insulate the cut end just leave well enough alone 19 is the best radio 's! Diode D21 and D22 was sw1 / SW2 DOWN: NORMAL 1-40 Thanks for >. ( i drilled a 1/8 '' hole next to the PC board and UNSOLDER.. Get more modulatoin from a 636 mic silicon diode forward power 20 2... On how to add talkback and peak your Uniden Pro 520XL talkback and peak Uniden. Tools that you used in the radio by phpBB Forum Software phpBB Limited miles... Power level to 20 to 22 W. a 2N3904 NPN small-signal transistor the legs should be pointing to the foil... I drilled a 1/8 '' hole next to the ground of the to... 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