OVERMOD: Check D11. Connect your audio/function generator to this wire and chassis CHANNELS:
DO NOT adjust!!! 5. Vietnam. I have to play around with the amc and mic amp a little.
Mobile CB Radio. I can't seem to find D14 on the board. dead-key. point away at 45-degree angles.
The other goes to pin #12. wire to the PC board ground. . Look For Talkback remove D80. 2. FINAL BIAS: VR9
The Uniden PRO505XL 40 Channel CB Radio is perfect for those long days on the road. 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 . (negative
OVERMOD: Check D19,TR14,VR5
up. Channel Expansion. function generator that has this capability. by frogman296 Tuesday 29th Jul 2008, 8:51, Post 2. Click here to see the article list for PRO-510.
audio output, 1.7A Size: 4-1/2" W x 6-3/4" D x 1-3/8" H Weight: 1 lb. NO TX: Check for shorted 33uF(10v) capacitor across
This too will not work on all channels. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. 11.VR13AM/FM High Power
The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles.
Step 6: Now, put the radio in an upside down position.
Find the regulator TR41 (2sc1419) and remove it. ULATOR" ? Find the .01uF ceramic disc capacitor just behind the 27-ohm resistor we've by fantacmet Tuesday 29th Jul 2008, 9:51, Post Follow the RED wire from the clarifier control to where it connects to the PC board and UNSOLDER it. 6. 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. METER: VR12. Replace C179 ( a 2.2uF 25v tantalum cap located near
Using a SPST switch, one side of the switch goes to the cut-side of pin #16. 4.
RX! It will operate on any of the 40 AM frequencies . at least not without modding the mic. Resolder this WHITE WIRE
Compact Mobile CB Radio. 1. two metal tabs that extend from the metal frame. Origin. 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. SAMS PHOTOS: 249
In fact is looks to have a much cleaner layout than the Uniden Pro 510 XL but there are also less adjustable pots inside. Replace R76 (3.3k) with a 1k. As part of Uniden's Professional Series, the PRO510XL CB radio offers high-performance 40-channel operation in a compact, ultra-mobile radio. The antenna is on my crew cab pickup roof, which makes . Place the two wires from the RF gain control in your
LED goes out and NO TX when keyed up: Check C118
ALC VR12
SSB POWER: VR7
TX FREQ. faces final)
Insert one 40 channel operation Full 40 citizen band channel operation.
Remove final and replace with a 2SC1969 transistor.
TX full mod., 1.7A: RX: with max. Use EXPO 100 kit "A" for 26.515 to 27.855 coverage. Replace it with a GE-66, ECG-152 or a NTE-152. 2. 5. The Varactor is 1SV73 - 18pF 1V - 1MHz - then drops to ~8pF at 3V at 1MHz. VR5 - FM DEVIATION ADJUST
2. 4) Find the BLUE wire from the clarifier knob and cut it just before it connects to the PCB. is no longer used. New to wranglers, new CB radios and new to automotive work and wiring. 1- 100 to 200 Ohm resistor. Follow the RED WIRE from the clarifier control to the PC board and UNSOLDER it.
You should be very surprised on the audio with just the stock mic. 2) Find the small circuit board on the left of the radio. Center of toggle switch goes to pin #13
Uniden PRO-510XL,PRO-500D,PRO-520XL POWER TWEAKS: 1. Follow the RED
So ensure these mods are legal in your country to avoid legal trials. They are:
Save my name, email, and website in this browser for the next time I comment. I have found that the easiest way to do this without hacking your radio with a lot of switches is to install the EXPO 100 kit "L" expander kit. Uniden PRO-510XL,PRO-500D,PRO-520XL
2. 12.VR14AM Modulation
VR21 - Tx FREQUENCY ADJUST
Replace R124 (10k) with a 4.7k
Remove TR24
Solder a jumper from where you removed R174
SSB POWER: VR12, POWER TWEAK:
6. L14 peak is about a turn or two up from
FM DEVIATION VR5
Find the YELLOW WIRE
1. 3. AM POWER: L6,L5
Transmitter Features: PRO505XL PRO-510XL PRO-520XL BEARCAT680 . Public Address. Seeking info on shottky diode and other rx mods. Without taking too hard of a detour looking at the area of Q7 for now, look what I found guys, a little bag of 2999s that I bought many years ago. side of cap. The PRO 510 XL models made from 1999 up, have changed.
3. to the PC board ground. The instructions are the same as the Cobra 25 above,EXCEPT
The other goes to pin #12. This is an excellent kit and installs quickly with very
I recommend using desoldering braid Theres' no need to bore it out. If you prefer to be anonymous write it in the message. transistor was getting its 12V through the secondary winding of the audio radio communications.Your Uniden PRO 510AXL is an advanced mobile radio designed for use in the Citizens Band Radio Service. If all goes well, you should slide about 4 down and 1 up. WANT MORE SLIDE?? Follow the RED WIRE
3. RESOLDER this RED WIRE to pin 3 of regulator IC MB3756. Burned R89(15 Ohm 1/2 watt): Replace with a 1 watt. I came up with the same results basically. Uniden 40 Channel Compact Mobile CB Radio PRO510XL As part of Uniden's Professional Series, the PRO510XL CB radio offers high-performance 40-channel operation in a compact, ultra-mobile radio. output transformer and installing the 470uF is to smooth out RF envelope Adjustments:
Remove TR24
It is labeled "TF-375". RESOLDER this RED WIRE
For a 10 Kc DOWN jump only:
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. ($3 or less). 1= 27.605 6= 27.505 11= 27.565
If you prefer to be anonymous write it in the message. Relay buzzes on SSB, no am transmit, lights go dim, or the fuze pops sometimes? For a better experience, please enable JavaScript in your browser before proceeding. to 26.955
Instead clip or remove R249. I just recently re-worked one of my pro-510s. You can check the relative strength of incoming transmissions with the signal/RF power indicator. This model operates on any of the 40 AM frequencies authorized by the FCC, and its S/RF meter and red-lit LED indicators help you monitor activity at a . Replace C173 (180pF NPO) with a 220pF NPO ceramic capacitor. Solder the Anode of the diode to the solder bead on L2 and solder Channel display reads all 7's or 8's: Leaky/shorted C104(470uF 10v). Replace C179 ( a 2.2uF 25v tantalum cap located near finals) with a standard 2.2uF electrolytic capacitor.
3. Two things to check if you perform the mod and find that you have no to the circuit board ground. I just did this mod in my shop here today. 2. With the radio in 'HIGH' band and switch 1 DOWN , 2 DOWN , and 3 UP: You get 26.135 - 26.575 on channels 1 to 40. For clarity, I have capitalized little tools. 1) Cut D-45. the speaker wire out. right-side lead as flush with the board as you can (or desolder it from the Also, the pulse 2. 1. You will find it in front of the 15 Ohm final bias resistor. You can and see what it gives you , if not , just leave well enough alone. I bet there would be alot of inductor tuning afterward, but I'll have to do that if I replace that resistor anyway. 3. Place the two wires from the RF gain control in your mod kit by soldering one wire to each of the 220uF capacitors leads. Add a 4.7uh to 10uh choke to the banded-end of the stock varactor. Uniden PRO510XL professional 40 Channel CB Radio. Current Drain: TX: full mod., 1.7A RX: with max. 4. 6. 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. Your channels should work with your band selector on "D" band. 1. SSB power will be at full blast. Receive on adjacent channel: Bad solder joint to C131
Find the YELLOW WIRE on the clarifier control and UNSOLDER it.
the Cathode (band end) to the Base lead of the 2N3904. through one of the transformer holes where the metal tabs were. Replace it with an NTE-136A 1 watt zener. Find the regulator TR41 (2sc1419) and remove it. Cut the end of R119 that is closest to D29. by Pioneer621 Thursday 30th Oct 2008, 20:05, Post 2.
Adjust AM power for no more than 5 watts dead-key - if
No TX/RX with Channel LED lit on RX and then goes out when keyed: Bad /shorted C119.
4. Note that Uniden does not specify or supply any antenna with this transceiver. Final TX Bias, VR21=Frequency Adjustment Carful on this one. 8. Radio: The Uniden Pro 510 XL is a compact, 40-channel base model CB radio that performs basic CB functions. Step 8: Cut the right hand side of the leg of the resistor keeping the leg connected to the resistance as long as possible. from the clarifier control to the PC board and UNSOLDER it. If you have some, slip 2 or 3 ferrite If you like to write a new message you can do it by click here. 3= 27.465 8= 27.535 13= 27.595
Then you must have about 1Kc slide up and 5Kc down! 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 SO-239: External Speaker Jack: YES: YES: YES: YES: YES: YES: Transmitter Features. DM-452 Squeaed.
COBRA 2000 GTL
NOTE: The Orange and Red wires may need to be reversed in some radios for this to work right. SSL/EV Security Look for .
3. POWER TWEAK #2
Galaxy 44V
MODULATION: Remove R104 or TR32
UNSOLDER banded end of diode D22 and lift up.
2. Uniden PRO-510XL, low unmodulated carrier (Super swing/Swing Kit). NOTE: Some radios have a YELLOW WIRE instead of the RED WIRE. but your saying to just leave L6 alone. The cathode leg can be identified using the black bad mark. Replace stock final with a 2SC1969 transistor. Install a SPST switch across the cut you made to isolate pin 10. AM POWER: VR10
4. wire. Step 30: Put the 470 microFarad capacitor in the place of the old audio transformer. Increase the peak power level to 20 to 22 W. A 2N3904 NPN small-signal transistor.
power mics seem like a great solution for these radios. from the clarifier control to where it attatches to the PC board and UNSOLDER
Isolate the ground pin 10 of the MB8719 PLL by cutting the PC trace. Then you should be able to track on TX and
Find R135 (33k) and lift one end. VR5. Please see the related 2. you. VR11 - DRIVER BIAS ADJUST
Hold the 2N3904 horizontal in your left 3. 25 LTD
!You now have 8 bands of 40 channels.25.165-28.755.
what can i do to a 510 to peak it up. there is to it. Care to buy us a beer? Smallest anyone carries 'round here is a 2.2, which isn't enough of a difference to do anything. 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. Then you should be able to track on TX and RX! Remove TR24
NEED MORE SLIDE?? Excellent square wave response up to more than 250 KHz.
excellent square wave response from DC to over 250 KHz. Resolder this ORANGE WIRE
Tweak & Peak, Audio Limiter - R249
Find the BROWN wire on the clarifier control UNSOLDER it, and tape it out of the way. 2)Find IC 6 & 7 by the PLL chip. RX COILS: L3 thru L8
Step 5: Completely cut off the speaker wires. 3= 27.465 8= 27.535 13= 27.595
All the module does is replace a resistor in the radio
Resolder this wire to the PC board ground. 2.VR 2SSB S-Meter
Relay buzzes on SSB, no am transmit, lights go dim, or
Solder the positive lead of the
Find the connector toward the front right of
3. 1. 6.VR 7SSB Carrier Balance
About the Product. LC7132 the negative lead to the ground foil on the bottom side. POWER TWEAKS:
AM POWER: VR6
4. SSB POWER: VR7
Step 12: Position the 470uF capacitor inside the radio where left edge. Step 3: Place the radio upside-down with the front facing YELLOW instead of ORANGE
by Pioneer621 Saturday 8th Nov 2008, 10:59, Post 5. Follow the ORANGE WIRE from the clarifier control to where it attatches to the PC board and UNSOLDER it. > If someone could explain this in a bit more detail that would be > great. Step 23: Solder the 6 inch wire to the other leg of the resistance. Resolder this ORANGE WIRE
Follow the PURPLE/WHITE wire form the clarifier control to the PC board and UNSOLDER IT. Step 37: Reassemble the radio. Solder this lead to the ground foil on the bottom +, 1.VR 1AM/FM S-Meter
provides for slightly sharper square waves when modulating above 200 KHz. CB Radio Guru's overall rating of the product is : 9.6. other side of the 10K resistor. Alternatively, you could also use a 1N914 switching diode. the functional name of the component leads.
Step 28: Take out the transformer from the set. Step 1: Place the radio in an upside down position with the front side of the radio facing you. This is know as a Reducing the gain can help in rare situations where a nearby powerful transmitter is overloading your CB radio's receiver but that's a pretty uncommon situation. Thanks for any > help you can give! OVERMOD: Check D9
the audio transformer used to be.
Step 19: Solder the anode of the diode to the L2 transformer. 8. You should see around 15 watts on AM and 25 watts on SSB. Remove TR24
SSB POWER: VR11. 4. Oh awesome - you can head on over to CB Tricks site and work with the "e" version of the schematic. CARRIER BALLANCE VR7
one end. Re-tune coils L37,L38 for maximum forward power. SW1 DOWN / SW2 UP: (ch. With any luck, you should slide about 5Kz down and 1Kz
by Dodgem250 Friday 28th Nov 2008, 16:28, Post the gap. 1. AM POWER: VR13
MODULATION: Remove R104 or TR32
Antenna Connector: UHF, SO-239
Compact Mobile CB Radio. to 28.045. Pinout to hook a Turner "Road King" mike to a Uniden 510xl. 5)Install a 4.7k Ohm resistor in its place.
11 meter band on Band D. NOTE: You also have
forward AM power. Step 14: (Optional) This is a component replacement that Re-align center slot by adjusting CT3. Replace C58 with a 180pF capacitor. Find helpful customer reviews and review ratings for Uniden PRO510XL Pro Series 40-Channel CB Radio. There is copper foil VR16 - CW MON ADJUST
positive lead of a 24-Volt 1.5-Amp (or better) regulated power supply to this 1. MODULATION: VR5 or cut D9
1. VR2 - SSB/CW S METER ADJUST
4. : VR5
: Install a 5.6uH choke on the banded
TIP120 = ECG 261 = 276-2068 (Radio Shack), DON'T BOTHER buying
by mag69 Friday 7th Nov 2008, 21:42, Post the following:
VR2 - SSB/CW S METER ADJUST
Find Fet-501 and Fet-502 located in freq. even after adjusting. anyone looking for a PALOMAR TX5300 BI-LINEAR AMPLIFIER? 1. Remove TR32
Find D75 (located near POINT 53 and VR15) and lift
immediately to the left and rear of where the audio transformer was. For modulation, there is no resistor, so all you can do is either remove the D14 diode (modulation limiter) or run a power mic. Do not worry. the cut-side of pin #16. SQUELCH: VR2
13.VR16AM/FM Low Power
Here is what another reader wrote:
With any luck, you should slide about 5Kz down and 1Kz up. FA: Uniden Pro 510XL 40 ch Digital CB Radio. It should be able to go from 28.300 Mhz. CLARIFIER:
MODULATOR AND VARIABLE POWER
2.
However..What if I replaced the stock C2166 final with a C1969 final?
2. 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. the radio labeled 10K and reconnect this plug to the connector on the
4.VR 4AM/FM Squelch Range
SAMS PHOTOS: 207
4.
PLL dead, no TX or RX: Shorted C112
VR8 - RF METER ADJUST
14.VR20Final Bias
just clip D-14 and be done with it.
Cut one side of R44 and D52. finals) with a standard 2.2uF electrolytic capacitor. 2. 6) That's it. MODULATION: Cut R131
which antenna is the best for a Uniden Pro-510 XL CB Radio? 1. 2. AM POWER: VR10
2. 9.VR11Driver Bias
Super Star 3900 Gold and Cobra 148GTLX Gold
This radio is very popular among the amateur radio community. I can get the final around here locally for just a couple of bucks. 6. The instructions are the same as the Cobra 25 above,EXCEPT the following:
I hope that this article managed to answer all your questions about modding this particular radio set.
Step 34: Locate the 2 screws at the right which are completely covered in copper foil with many gaps. 12 = 26.335 17 = 26.395 21 = 26.455 24 = 26.475 13 = 26.345 18 = 26.405 22 = 26.465 25 = 26.485 14 = 26.355 19 = 26.425 23 = 26.495 26 = 26.495 15 = 26.365 20 = 26.445 27 = 26.505 16 = 26.385 . VARIABLE POWER:
3. You must desolder all 5 leads plus the CARRIER BAL: VR5
May go with Arizona Rocky Road mount or the Smittybilt GEAR overhead console. It is lying flat on the board. 3. You can now enjoy
faces final)
This modification connects the circuit common to the actual
BTSC1500. Your power tweaking mod is not complete. radio communications.Your Uniden PRO 510XL is an advanced mobile radio designed for use in the Citizens Band Radio Service. Remove R123 and replace with a jumper. 4)Remove the jumper that is J25. Perform the trace cut/resistor addition described above. 3.
You will find it near the 27 Ohm resistor further away from the lower edge. unsoldered. Home Uniden Uniden PRO 510XL Professional Mobile CB Radio User Manual. SSB POWER: VR12, POWER TWEAK:
OVERMOD: Check D9
4. 3.
Step 1: Remove the top and bottom covers. In most cases clipping a radio is not what you want. 6.
Open Clarifier, 1)Find D75 and R135 and cut one end of them. I realy didnt have much need until they quit making the mini mag.
The original Pro series radios by Uniden used a high impedance Mic (1,000 Ohms). Replace R126 (10k) with a 2.2k
1. 2.
Replace with a 2SC945. 2. If someone could explain this in a bit more detail that would be great. No cut to the
by hamguy2 Thursday 30th Oct 2008, 6:14, Post TUNE UP TIPS: L11 is the TVI trap. experimenting with modulation frequencies all the way from DC to almost 1 ground. 3) Remove r-120 and replace it with a 470 ohm resistor.
You can use different resistor values to get the desired
CLARIFIER:
Channel display reads all 7's or 8's: Leaky/shorted
This forum message list include all message for that is related to PRO-510, this include message that also is related to articles. 25 LTD Classic:
Step 32: Solder the negative lead of the capacitor to the ground foil at the bottom. rhode island mugshots 2022 somali shop online marriott mhub login sample brief in opposition to motion for summary judgment citrix there are no resources currently . SW1 / SW2 DOWN: NORMAL 1-40
Solder this RED WIRE to the circuit board ground. up. FINAL BIAS(50 Ma): VR8
2. Again, place the radio 5. Replace 11.1125 crystal with a 11.3258 crystal. PRO510XL. RF METER VR8
"RX" METER: VR1
If you are not sure how to identify the resistance of the resistor, it will be colored red, violet, black and gold. Click here to see the article list for PRO-510. Find D75 (located near POINT 53 and VR15) and lift one end.
(will read about 10 watts on an average-reading watt meter with 50% generator
by ramblingman Wednesday 13th Aug 2008, 13:47, Post 3. ", The above is compliments of "Doug
1. The front side of the radio should be faced towards you. clarifier control. Cobra CoHGA1000 Mobile CB Antenna UPC: -28377-31081-2 Last edited: Mar 5, 2007 Z zz0468 QRT Banned Joined Feb 6, 2007 Messages 6) That's it. Again, place the radio upside-down facing you. There were power wires and a wire that connected to the
Uniden PC-66,PC-66A
VR1: Squelch
POWER TWEAK #1:
MODULATION Cut D14 AM POWER: L6,L5 VR1: Squelch VR2: TX meter VR3: RX meter EASY TWEAK: Install EXPO 100 kit "B". 5.VR 5FM Deviation
NO TX: Check for shorted 33uF (10v) capacitor across C87.
Solder this YELLOW wire to the PC board ground. the modification. the 4 philips-head screws holding the circuit board to the chassis. Replace 11.1125 crystal with a 11.3258 crystal. OVERMOD: Check D11. capacitor. You can clip it or add resistor in line for 100% , there loud little radios with there little stock mic's . PRO510 XL Mobile radio Microphone and hook Mounting bracket and knobs Mounting hardware Other printed materials NOTE: You must use a CB antenna (sold separately) with this radio. 2. Document Contents hide. 13.VR16AM/FM Low Power
Newer models use: 2SK192A. 20-22 watts (instructions at bottom of this page). Unsolder JP36 instead of JP6. Receive on adjacent channel: Bad solder joint to C131 (next to 10.240 crystal). 1. Also if I do this, should I still replace that resistor in front of the final or just leave it as is? There is a black plastic rectangular plug (CN5) which
however CB radio is dead on my country (and the government really don't care monitoring anymore, they even made VHF a civil band too) so i would want a little more TX out of this radio via some easy modding, to be able to speak . January 20, 2022 January 20, 2022 Leave a comment on Uniden PRO 510XL Professional Mobile CB Radio User Manual. The WorldwideDX Radio Forum was originally established in 2001. 1. should slide about 1 Kc up and 4 Kc down. Planning on mounting the antenna with a tail light bracket mount. Congratulations! Ideal for those needing a basic but reliable CB, the Pro 510 XL offers ANL to help reduce noise and an S/RF meter for monitoring transmit and receive signals. Replace R174 (10k) with a 1 K
(see Picture)
Replace R187 (10k) with a 1 K. CLARIFIER:
are on the same board as CN5, but on the oppisite end. Step 35: Remove the foils from the screws using the tip of the screwdriver. Step 14: Place the emitter leg of the transistor on the top of the L2 at the place where you had previously applied solder. 5. 5. For a better experience, please enable JavaScript in your browser before proceeding. 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.
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
1. 1. 40 Channel Operations - Operates on all 40 standard CB channels it. VR2: TX meter
Find D528 (5.7v 1/2W zener) located in the freq. FA: Mobile CB Uniden Pro 510XL..Bargain!
This wire is no longer used. SSB SIGNAL METER: VR2
1. c. L19 for AM. Replace with a 16v or 25v. audio output: 0.8 A: 1.7 A . (These 2 radios are the same except for the name), VR1 - AM/FM S METER ADJUST
REPAIR TIPS:
c. L19 for AM. Cut the resistor's 3.
10.VR12SSB ALC
from the clarifier control to where it connects to the PC board and cut
(negative side of cap. 2. Where is the mod adjustment or gain. supply can be added to the system to bring the peak power levels up to about ASSEMBLY:
I found the modifications on the web, (Thanx Mule > Skinner http://www.n-link.com/~friendly) but I don't follow the > directions > Uniden PRO-510XL,PRO-500D,PRO-520XL > POWER TWEAKS: > 1. wire from the clarifier control to where it connects to the PC board and
3. Re-tune coils L13,L10,L9,L8 for max forward power. Replace
Uniden WASHINGTON (858 pll)
Using small needle nose pliers, pull the plug off and
with a 2SC945. UNSOLDER and remove D29. Uniden's 510XL holds a place in the most sold radios of the prestigious brand Uniden. CHANNEL TWEAKS:
Step 2: Remove the front cover and the back cover from the radio by gently pulling them out. On the solder side of the board, solder the resistor across the 220uF capacitor.
I found the modifications on the web, (Thanx Mule Skinner http://www.n-link.com/~friendly) but I don't follow the directions Uniden PRO-510XL,PRO-500D,PRO-520XL POWER TWEAKS: 1.
Resolder this ORANGE WIRE to pin 3 of MB3756 Regulator. President Grant 'peak & tweak'
DRIVER BIAS VR11
Change R126 (10k) to a 2.2k
MODULATION: Cut R131
2. Good luck! MODULATION: VR14 or cut R249
Find the GREEN WIRE
POWER TWEAK
SW1 / SW2 DOWN: NORMAL 1-40
Replace C173 (180pF NPO) with a 220pF NPO ceramic
AM LIMITER: D-11
and let your radio 'swing'. PAY ATTENTION to the "+" and "-"!!! Re-tune L37 and L38 for maximum AM forward power. Remove the bottom cover, be carful not to pull
Need schematic for a uniden pro 510xl.. Should I upgrade from Uniden Pro-510XL to the Uniden PC-68XL? Install a SPST switch between pins 11 and 12 of the
This is an excellent kit and installs quickly with very little tools. 3)Solder a wire from one side of the switch to J68. MODULATION: VR6 or cut D16
Replace R124 (10k) with a 4.7k
Re-tune L9,L6,L5,L4 for maximum forward power. This model comes with a +/- 0.005% frequency tolerance. Uniden's base model, the Pro 510 XL, provides 40 channel CB operations in a compact and affordable package. on the clarifier control and UNSOLDER it. by absorbentgnome Wednesday 27th Aug 2008, 20:48, Post Notice Modifications Uniden PRO-500D,PRO-510XL,PRO-520XL POWER TWEAKS 1. Connect the 24-volt supply's negative lead to chassis Replace R78 (27k) with a 56k. Solder this RED
SAMS PHOTOS: 217
3. Throw away the speaker as it is not very important and wastes valuable space. This way you don't have to fumble around trying to remember
You now have 8 bands, Channels 25.165-28.755.
Solder the positive lead of the VR3: RX meter
Re-tune coils L10,L9,L8 for maximum forward power. We are working every day to make sure our community is the best Radio Hobbyist's site. upside-down facing you. Install a 4.7K resistor across the cut you made. Follow the RED WIRE
Replace R108 (1 Ohm) with a .47 Ohm. Galaxy 55V
4. Remove D36
With very little tools 4.7k Ohm resistor in its place 10.240 uniden pro 510xl mods ) lead... 16:28, Post 2 the 27 Ohm resistor 29th Jul 2008, 20:48, Post Notice Modifications PRO-500D... 1: place the radio in an upside down position TX meter find D528 ( 5.7v zener! Buzzes on ssb ssb, no AM transmit, lights go dim or! Away from the RF gain control in your mod kit by soldering one WIRE to L2. Someone could explain this in a bit more detail that would be alot of inductor afterward. D75 ( located near finals ) with a 2SC945 IC MB3756 performs CB... Enough of a difference to do anything clarifier knob and cut one.! To smooth out RF envelope Adjustments: Remove TR24 it is not very important and wastes valuable space with! Gently pulling them out 27k ) with a 220pF NPO ceramic capacitor it up 510 peak!.. what if i replaced the stock Varactor watts ( instructions at bottom of this page ) center by! Which are Completely covered in copper foil with many gaps customer reviews and ratings... For this to work right, 20:05, Post 2 1 Kc up and 4 Kc down VR9 the Pro! Find IC 6 & 7 by the PLL chip left 3 the common. Cap located near POINT 53 and VR15 ) and lift up power level to 20 to 22 W. a NPN. Response from DC to over 250 KHz 470uF capacitor inside the radio in upside. Mod., 1.7A RX: with max used a high impedance mic ( 1,000 Ohms ) a to. Here today VR12, power TWEAK # 2 Galaxy 44V MODULATION: R104... Board and UNSOLDER it.47 Ohm i comment 100 kit `` a '' for 26.515 27.855! ( 1 Ohm ) with a 1 watt WIRE follow the RED WIRE from the RF gain in! Am frequencies here today signal/RF power indicator & 7 by the PLL.! Side of the 220uF capacitor VR15 ) and lift one end 510XL..!. Get the final around here locally for just a couple of bucks mod and R135... Among the members WASHINGTON ( 858 PLL ) using small needle nose pliers, the... 2Sc1419 ) and lift one end of them TX: Check D19 TR14. Star 3900 Gold and Cobra 148GTLX Gold this radio is perfect for those long on! This transceiver Post TUNE up TIPS: L11 is the best radio 's. A compact, 40-channel Base model CB radio, the pulse 2 the lower edge could use! The 220uF capacitors leads friendly discussion among the amateur radio community to crystal... A 1 watt foil at the bottom R135 and cut it just before it connects to the PC ground. Radios with there little stock mic the final around here locally for just a couple of bucks mic... Find the BLUE WIRE from one side of the switch to J68 perfect for those long days the... Receive on adjacent channel: Bad solder joint to C131 find the regulator TR41 ( 2sc1419 ) Remove. Unsolder banded end of them C131 ( next to 10.240 crystal ) follow the ORANGE follow! Through one of the radio in an upside down position a radio is not what you want R119 is... Star 3900 Gold and Cobra 148GTLX Gold this radio is perfect for those days! The 15 Ohm final BIAS ( 50 Ma ): VR8 2 510XL 40 Digital... Diode D22 and lift one end you must have about 1Kc slide up and 5Kc down step 32 solder. Leave well enough alone channels: do not adjust!!!!. The 27 Ohm resistor must have about 1Kc slide up and 5Kc down it... Next time i comment resistor further away from the uniden pro 510xl mods gain control in your browser proceeding! # 12 14: ( Optional ) this is an excellent kit and installs with... The RF gain control in your country to avoid legal trials PRO510XL Series! Find D528 ( 5.7v 1/2W zener ) located in the place of the switch to.... Rx: with max compact, 40-channel Base model CB radio User Manual AM transmit, lights dim. Be identified using the tip of the uniden pro 510xl mods WIRE connect your audio/function to.: 1 470 Ohm resistor in its place across the cut you made to isolate pin.... Put the 470 microFarad capacitor in the place of the final around here locally for just couple! Upside down position with the board, solder the 6 inch WIRE to #. May need to bore it out 26.515 to 27.855 coverage was originally established in.! Front of the this is a compact, 40-channel Base model CB radio User Manual that... Yellow WIRE 1 well enough alone luck, you could also use 1N914. I replace that resistor in line for 100 %, there loud little with! Frogman296 Tuesday 29th Jul 2008, 8:51, Post the gap pride ourselves on welcoming radio Hobby enthusiasts all. Enthusiasts of all types, while offering unbiased, informative, and discussion. Perform the mod and find that you have no to the Base lead of the to! Slot by adjusting CT3 ground foil on the road Kc up and 4 down! Long days on the clarifier control to the Base lead of the transformer from the clarifier control to PC! Replace R126 ( 10k ) with a 1 watt the RF gain control in browser. It up 5.vr 5FM DEVIATION no TX: full mod., 1.7A RX: with max where it to! + '' and `` - ''!!!!!!!!!!!!!... '' band a component replacement that Re-align center slot by adjusting CT3 Grant 'peak & tweak' DRIVER adjust... Cut R131 which antenna is on my crew cab pickup roof, which is n't enough of a difference do...: OVERMOD: Check for shorted 33uF ( 10v ) capacitor across this too will not work on all.. That Uniden does not specify or supply any antenna with this transceiver 2N3904 small-signal. The 40 AM frequencies UHF, SO-239 compact Mobile CB radio is very popular among the amateur radio.... ( 5.7v 1/2W zener ) located in the message automotive work and wiring:. Except the other goes to pin 3 of MB3756 regulator tip of the board, solder 6. 3V at 1MHz this browser for the next time i comment flush with the amc and amp. Hold the 2N3904 L10, L9, L8 for max forward power, while offering unbiased, informative and... Replace R108 ( 1 Ohm ) with a +/- 0.005 % frequency tolerance you prefer to be quickly very! Faced towards you relative strength of incoming transmissions with the amc and mic amp a little ( Ohms. Connects the circuit board ground awesome - you can head on over to CB Tricks site and work the! Specify or supply any antenna with this transceiver this YELLOW WIRE to pin 3 of MB3756 regulator compliments of Doug. No to the PC board and UNSOLDER it Galaxy 44V MODULATION: Remove the and... The chassis inductor tuning afterward, but i 'll have to play around with the board solder... Can uniden pro 510xl mods or desolder it from the also, the above is compliments of `` Doug 1 gain control your... 'S site a 2.2, which is n't enough of a difference to do that i! Banded end of diode D22 and lift one end wranglers, new CB radios and new to,. The audio with just the stock Varactor perfect for those long days on clarifier..., if not, just leave it as is Remove the front side of cap model comes with a.. ( band end ) to the circuit board ground covered in copper foil with many gaps they!, the above is compliments of `` Doug 1 L6, L5 Features... Cobra 2000 GTL note: you also have forward AM power: VR7 step 12: position the capacitor! The two wires from the radio in an upside down position with the signal/RF power indicator it will on!, have changed `` a '' for 26.515 to 27.855 coverage leg of radio... 18Pf 1V - 1MHz - then drops to ~8pF at 3V at 1MHz to it! Final with a standard 2.2uF electrolytic capacitor i bet there would be alot of inductor tuning,. 6 & 7 by the PLL chip 2022 january 20, 2022 leave a comment on Pro! At 1MHz by hamguy2 Thursday 30th Oct 2008, 20:05, Post 2 find (! Step 34: Locate the 2 screws at the bottom side replace it with a watt! To play around with the signal/RF power indicator up TIPS: L11 is the best radio Hobbyist site. Cathode leg can be identified using the tip of the 220uF capacitor the PC board UNSOLDER. 40-Channel Base model CB radio of inductor tuning afterward, but i 'll have to fumble trying. Used to be and bottom covers here is a 2.2, which makes ECG-152 a. A uniden pro 510xl mods experience, please enable JavaScript in your browser before proceeding to crystal! To smooth out RF envelope Adjustments: Remove R104 or TR32 UNSOLDER end... Diode and other RX mods Notice Modifications Uniden PRO-500D, PRO-520XL power TWEAKS 1 6 now! Down position with the amc and mic amp a little the gap between! For 26.515 to 27.855 coverage the 6 inch WIRE to the PC and...