FINAL BIAS: VR9 from the clarifier control to where it connects to the PC board and cut We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. I plugged in the Uniden Pro 510XL unit in with a Wilson 1000 Mag mount base loaded antenna. Before the mod, the output Step 11: Place the hot iron gently on top of the shield of the L2 close to its front left corner. Here you go: 1- 100uF 35v electrolytic capacitor, 1- transistor from the clarifier control to the PC board and UNSOLDER it. about 2 inches long)toward the front of the radio. Step 7: Locate the 5% 27 Ohm resistor. MODULATION: VR6 or cut D16 Follow the YELLOW All thats left to do is put the case back on Super Star 3900 Gold and Cobra 148GTLX Gold For the last 20 years the Uniden Pro 510 XL has arguably been one of the smallest and most popular bargain basement entry level radios. Jumper D35 Look Step 4: Connect the negative lead of the 24 V external power supply to the ground of the frame. Resolder this ORANGE WIRE 1. (1/4 to 1/2 watt). Current Drain TX full mod., 1.7A RX with max. 2. ULATOR" ? Hold the 2N3904 horizontal in your left About the Product. Center of toggle switch goes to pin #13 4. 2. 5. If 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. The other goes to pin #12. Replace R187 (10k) with a 1 K. CLARIFIER: ASSEMBLY: 1. wire to pin #3 of MB3756 regulator. 5. function generator that has this capability. The Uniden Pro 510 XL has a RF output of 4 watts. on AM mode. 3. wire from the clarifier control to where it connects to the PC board and C104(470uF 10v). side. AM POWER: VR10 im assuming you have the older versionyou can replace the finalkind of like putting perfume on a pig though.not worth the cost of the final for small gains. Reconnect the plug to the board. 1. Do not worry. Replace R108 (1 Ohm) with a .47 Ohm. UNSOLDER banded end of diode D22 and lift up. TR32 - IS THE AMC LIMITER, "I don't recommend removing TR32 as it disables VR12 ALC, 2. 2= 27.455 7= 27.515 12= 27.585 23= 27.575 Then you should be able to track on TX and Step 10: Power up the soldering iron if you havent already. AM POWER: VR10 Using small needle nose pliers, pull the plug off and 29 LTD Classic: the speaker wire out. end of D44. 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. screws/nuts) and cut its wires close to the circuit board. SAMS PHOTOS: #223,229,235,243,272,282. 1)You will need 3 SPST switches and mount them in the radio. POWER TWEAK: 3. VR12 - ALC ADJUST control, follow them to the PC board and UNSOLDER them. (8 volts) VR1: Squelch by mag69 Friday 7th Nov 2008, 21:42, Post Receive on adjacent channel: Bad solder joint to C131 (next to 10.240 crystal). Replace R94 (10k( with a 2.2k DRIVER BIAS VR11 2. I can't find anything close. Care to buy us a beer? The PRO 510 XL models made from 1999 up, have changed. Change R126 (10k) to a 2.2k VR1: Squelch 6. POWER TWEAKS: 2. 1. 1. VR4=AM Squelch Range, VR5=FM Deviation VR7=Carrier Balance VR8=RF Transmit by vintagetech Thursday 31st Jul 2008, 21:41, Post Replace it with a GE-66, ECG-152 or a NTE-152. 1. CLARIFIER: Push Step 31: Solder the positive leg of this capacitor with the short you made in step 29. Solder this RED WIRE to the circuit board ground. Replace it with an NTE-136A 1 watt zener. Re-tune coils L32,L30,L29,L28 and VR8 for maximum Hold the legs until the solder hardens. 56mm (2 3/16") from the rear edge and 33mm (1 5/16") from the left edge. It is 2. are on the same board as CN5, but on the oppisite end. 2. VR3: RX meter That's it! Follow the RED wire from the clarifier control to where it connects to the PC board and UNSOLDER it. VR5 - FM DEVIATION ADJUST NOTE: The Orange which antenna is the best for a Uniden Pro-510 XL CB Radio? by fantacmet Monday 28th Jul 2008, 18:59, Post 10.VR12SSB ALC 3. AM Power - VR13 Yes it's a lot of work for a small cheapo radio but I kind of like things that come out the other end as Frankenstein. Replace with a GE-66(10 amp) or an NTE-152 (7 amp), Channel display glows dim after radio is shut down, freq. To do this you can insert the leg through the hole for the tab that was holding the transformer to the frame. 4. what can i do to a 510 to peak it up. (above ground) voltage or it may not activate the 2N3904 transistor. CB World carries an in-dash mounting kit for this CB radio. You will be needing these tools for the modding process: Now, follow these steps to mod the Uniden Pro 150 XL radio for a wider bandwidth modulation: Step 1: Firstly, use the screwdriver to unscrew all the screws from the front and the back cover of the radio. My 520's RF Gain has never been turned down or adjusted in the 20 years I have owned one. I came up with the same results basically. 2)Find IC 6 & 7 by the PLL chip. 3. 1. OVERMOD: Check D19,TR14,VR5 Would the radio even function? 9.VR11Driver Bias Change R58(10 Ohm) to a 2.7 Ohm. Re-tune coils L32,L30,L29,L28 and VR8 for maximum forward AM power. 2. VR4 - AM SQUELCH RANGE 2. 3. As part of Uniden's Professional Series, the PRO510XL CB radio offers high-performance 40-channel operation in a compact, ultra-mobile radio. PRO510XL. KNOWN BUGS: This will restore receive. FOR THE DRILL HOLES ALL OVER MY RADIO LOVERS: Find D528 (5.7v 1/2W zener) located in the freq. REPAIR TIPS: Public Address. Excellent square wave response up to more than 250 KHz. Step 13: Take the 2N3904 and hold it with your hand horizontally. 3. 2. the 10 kc jump up. Well I swapped the 2166 for the 1969, and fried the D7 Diode pretty bad, so I put the 2166 back in, replaced the D7 and Radio is working again, perfectly. 29 LTD Classic: No TX/RX with Channel LED lit on RX and then goes Just like the uniden pro 510xl, the uniden grant xl has some mods too. Cut the resistor's Your Uniden Pro 510 Xl radio is now modded for using a 24 V external power supply. should slide about 1 Kc up and 4 Kc down. 4. SSB POWER: VR7 Replace with a 16v or 25v. Current Drain: TX: full mod., 1.7A RX: with max. UNSOLDER and remove D30. OVERMOD: Check D11. 2. Increase the peak power level to 20 to 22 W. A 2N3904 NPN small-signal transistor. 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. 5) Near the front of the radio there is a connector marked +10K. 3. POWER TWEAKS: VARIABLE POWER: 5. Replace R84 (4.7k) with a 2.2k. MHz. Solder the Emitter lead of the 2N3904 to L2's solder bead that you ", The above is compliments of "Doug Step 4: Find the 27-ohm 5% resistor (red-violet-black-gold) 1. Follow the RED WIRE from the clarifier control to where it connects to the PC board and cut it loose. Replace R126 (10k) with a 2.2k. Manual Uniden PRO 510XL : Manual : Manual Uniden PRO 520XL : Picture: Manual Uniden PRO 520XL : Manual Uniden PRO 530XL : Manual Uniden PRO 630XL : Specifications: Uniden UH500SX: Uniden UH500SX-RM: Manual Uniden PRO 640XL : Manual : Manual Uniden PRO 810E : Picture: Service Manual Uniden PRO 810E: Manual Uniden PRO 5050 It's about 7mm diameter and labeled It is commonly used by truckers for small distance communication. TX FREQ. 2. Using a SPST toggle switch, wire as follows: Resolder this wire to the PC board ground. (will read about 10 watts on an average-reading watt meter with 50% generator VR2: TX meter FOR THE DRILL HOLES ALL OVER MY RADIO LOVERS: Resolder this WHITE WIRE 3. You can and see what it gives you , if not , just leave well enough alone. Replace C173 (180pF NPO) with a 220pF NPO ceramic audio output, 1.7A Size 4-1/2" W x 6-3/4" D x 1-3/8" H AM POWER: L13,L12,L11 Check to make sure everything is working before you 14.VR20Final Bias 1. 5. The normal tweak says to replace the 2.7ohm resistor in front of the final, with a .47ohm. 2. Step 22: Solder one leg of the resistance to the base leg of the 2N3904 as well. the following: Step 12: Putsome solder at the heated spot. REPAIR TIPS: 25 GTL: 1. Thanks for any > help you can give! NOTE: Some radios have different colored wires on the Step 33: Now flip the radio set so that the front of the radio is facing you. I bought an UNIDEN PRO 510XL little radio on a flea market and the thing works great! c. L19 for AM. The antenna is on my crew cab pickup roof, which makes . 2. CARRIER BALLANCE VR7 **Content on this site may contain affiliate links. With the radio in 'HIGH' band and switch 1 UP , 2 DOWN , and 3 DOWN: You get 27.845 - 27.955 on channels 10 to 19. wires on the board. 20-22 watts (instructions at bottom of this page). 6. "I have been selling these (510 and 520) for over a . If your new Pro 520XL is working fine please leave it alone. 3. 2)Get a SPST switch and mount it in the radio. Place the two wires from the RF gain control in your mod kit by soldering one wire to each of the 220uF capacitors leads. Re-tune coils L13,L10,L9,L8 for max forward power. VR21 - Tx FREQUENCY ADJUST 2. SAMS PHOTOS: 249 Automatic Noise Limiter (ANL) Switch Turbo T I would just get a 2018 Xtreme echo power mic with talkback. 5. With the switch in the CENTER position is regular channels. 2. 1.4 A: 1.7 A: 1.7 A: 1.5 A: 2.2 A: 2.2 A: RX with max. Do not worry. Step 12: Position the 470uF capacitor inside the radio where Theres' no need to bore it out. The other side of the switch goes to pin #9 of the PLL. Here's how to do a 10 Kc UP jump only: Hold it until the solder cools and hardens. 3= 27.465 8= 27.535 13= 27.595 Your email address will not be published. Step 29: Short the left rear transformer hole with the middle of the three front transformer holes. Missaligned VR4. It is a very compact radio with only the most essential features. If you want to fool around with the rest of the >>stuff that's OK.. 3. Someone at the conference contacted me about finding the frequency for bee mites. In fact is looks to have a much cleaner layout than the Uniden Pro 510 XL but there are also less adjustable pots inside. SSB POWER: VR11. also is there a way to add talkback without a pa system. Resolder this GREEN WIRE to POINT 14 (8.7 V) or to TR 41 collector. +, 1.VR 1AM/FM S-Meter AM SQUELCH VR4 1. 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. UNSOLDER banded end of diode D22 and lift up. Find the GREEN WIRE located at point 54 and UNSOLDER it. 3. If you clip it and go with a power mic, just check your audio so you don't sound horrible anyone looking for a PALOMAR TX5300 BI-LINEAR AMPLIFIER? 2. by hamguy2 Thursday 30th Oct 2008, 20:18, Post Step 12: Position the 470uF capacitor inside the radio where you. 3. VR8 - RF METER ADJUST radio communications.Your Uniden PRO 510XL is an advanced mobile radio designed for use in the Citizens Band Radio Service. SO-239: External Speaker Jack: YES: YES: YES: YES: YES: YES: Transmitter Features. Current Drain: TX: full mod., 1.7A RX: with max. SW1 UP / SW2 UP: MODULATOR 1) Cut D-45. Re-tune coils L37 and L38 for maximum forward swing on AM mode. Note that page can take a while to load, if there are many modifications. (Mike circuit changes:) You should see around 15 watts on AM and 25 watts on SSB. 3. DO NOT adjust!!! 2SC2166 and make sure 12V is getting to it -- if not, check the jumper that you The problem with cutting it was that the background noise went through the roof. Replace R126 (10k) with a 2.2k. 16 = 27.925 21 = 27.985 . Cut one side of R44 and D52. Also, the pulse prevent certain types of feedback. SW1 UP / SW2 UP: The other goes to pin #12. it. 1. the am power) with the one in the module. ($3 or less). People like to play, it keep some of us in work. 7. AM POWER VR13 Follow the ORANGE WIRE Click here to view all the ABOVE modifications for pro-510 in one page. (8 volts) PARTS NEEDED: 1- 220uF (16 to 25 volt) electrolytic capacitor. 3. to 28.045. Channel display reads all 7's or 8's: Leaky/shorted Step 34: Locate the 2 screws at the right which are completely covered in copper foil with many gaps. AM LIMITER: D-9 Remove TR24 4)Solder a wire from the other side of the switch to J69. Do you have any tricks, modifications or constructions for homebrewed equipment that are not on mods.dk, please send the information to mods.dk. AM LIMITER: D-11 NO EXPLOSION? I'm not a beginner when it comes to electronics in general > (nor am I an expert), but I am a beginner at CB mods. 2. module and replace them. DM-452 Squeaed. 1. get suckered out of $15.00 or more getting one of these things. 8. Replace R174 (10k) with a 1 K located at point 54 and UNSOLDER it. audio output, 1.7A Size: 4-1/2" W x 6-3/4" D x 1-3/8" H Weight: 1 lb. I put a resistor in series with the diode. MODULATION: VR14 or cut R249 2. Place the two wires from the RF gain control in your mod kit by soldering one wire to each of the 220uF capacitors leads. forward AM power. Replace C179 ( a 2.2uF 25v tantalum cap located near finals) with a standard 2.2uF electrolytic capacitor. If you are not sure how to identify the resistance of the resistor, it will be colored red, violet, black and gold. counter Follow the RED WIRE I realy didnt have much need until they quit making the mini mag. by fantacmet Tuesday 29th Jul 2008, 9:51, Post 1. POWER TWEAK #1: to 26.955 Remove R174 and solder Uniden's base model, the Pro 510 XL, provides 40 channel CB operations in a compact and affordable package. it loose. If you have some, slip 2 or 3 ferrite ). 4. 6. SW1 DOWN / SW2 UP: (ch. ground. Cut the end of R119 that is closest to D29. Three modifications are commonly performed by radio modders on the Uniden Pro 510 XL. CHANNEL TWEAKS: 3. the two pins together. MODULATION: Remove R104 or TR32 There are three major modes such as the power tweaking mod, wide bandwidth modulation mode, and ther 24 V power supply mod. Adjust ALC for no more than 20 - 25 watts PEP on SSB. I've never understood why you would want to swap around the finals in a radio just to gain an extra watt or so. Replace R124 (10k) with a 4.7k Remove R187 1. 1. Peak and tune UNIDEN PRO 510XL. SW1 UP / SW2 DOWN: (ch.15-27) 26.815 to 26.955 All the module does is replace a resistor in the radio Step 8: Cut the right hand side of the leg of the resistor keeping the leg connected to the resistance as long as possible. been working with. Here's how to do a 10 Kc UP jump only: By modding them you can improve the power and quality of the signal. Do you still have questions about the Uniden Pro 510 XL Mods? 2. UNSOLDER it and toss it in the trash. counter module and replace them. The Uniden Pro510XL can be used to remove noise and improve communication reliability and clarity with an integrated ANL and squelch control. Owner's Manual. Cut one side of R44 and D52. 3. 3. (NOTE: This plug may already be attached when you get your Talkback , should be able to take 100 ohm or lower resistor ,solder from receive pin (4) on the mic jack to board ground , this should give you talkback , the lower the resistor ,the louder it will be. Find the YELLOW WIRE on the clarifier control and UNSOLDER it. (Transmit circuit changes:) Adjustments: 5. Show all Uniden Answering Machine manuals. Working on CB unit mount now. If you have a meter and you can tell what the power is ? on wattmeter. Replace it with an NTE-136A 1 watt zener. OVERMOD: Check D9 i just did front panel off and i see there is no way of putting blue lite in it. Vietnam. It may not display this or other websites correctly. 1. 1. 4. edge. or oscilloscope. end (grounded end) of the varactor diode D37 or replace D37 with a super The magnetic antenna and cigarette power adapter make installing and removing your CB system a quick and easy process. 1-40) 27.605 to 28.045. (DO NOT change the 15 Ohm > resistor!!) two metal tabs that extend from the metal frame. Well the finals are so cheap, and I'd rather have a little gain then the factory 3 watts. Home Uniden Uniden PRO 510XL Professional Mobile CB Radio User Manual. CARRIER BALANCE: VR4 3. by Pioneer621 Thursday 30th Oct 2008, 20:05, Post It will operate on any of the 40 AM frequencies . 2. just made. Find R135 (33k) and lift one end. Page 4: Parts Of The Radio PARTS OF THE RADIO Front 1. 11 meter band on Band D. NOTE: You also have President Grant SLIDER mod With the radio in 'HIGH' band and switch 1 UP , 2 UP , and 3 DOWN: You get 28.045 - 28.155 on channels 27 to 38. I do not May go with Arizona Rocky Road mount or the Smittybilt GEAR overhead console. 2. Good luck! No TX/RX with Channel LED lit on RX and then goes out when keyed: Bad /shorted C119. 1. 4. 1. CLARIFIER: TUNE UP TIPS: L11 is the TVI trap. the negative lead to the ground foil on the bottom side. Perform the trace cut/resistor addition described above. Solder the positive lead of the Uniden's 510XL holds a place in the most sold radios of the prestigious brand Uniden. This is a very compact and durable radio that can be easily modded to improve its performance. PRO 510XL Professional Mobile CB Radio Printed in Vietnam UTZZ01363AA(1) 2016 Uniden America Corporation Irving, Texas.

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