For discussions on CB Radio Repair and Troubleshooting, do not post modification requests here, use the Modifications forum ! 9C1Driver Sr. Wondering what the value of a Vintage (23 Channel) Cobra model 29, new (never installed, original box and unopened literature, open box) recently tested by a radio tech and works great, would be? Lottery Failed. 40 Watt, High Power Mod. Post by Hawkeye138 » Wednesday 28th May 2008, 1:02 MOSFET Supertune (29LTD classic and newer): Replace stock final with IRF520 MOSFET transistor (pin-for-pin match when installing). Blitz tuned, 2.5 watts rms swing to 7 RMS. The Cobra Tradition Our 29 LTD Classic CB radio is still manufactured based on the original design which became known for its performance, reliability, and durability. This is a common mod and I think that's why I have voltage at E on TR15. Cobra 25 LTD-WX. Cobra 29 LX 40-Channel Mobile CB Radio w/Mods Professionally Tuned ('Scope, etc) New (Other) 5.0 out of 5 stars. is this correct for cobra 29 ltd lassic mosfet mod? Step one is refering to replacing the final as in the final transistor. The Cobra 29 LX features a selectable LCD Dot Matrix display to complement the interior of your vehicle. The EN2030. Item Information. The smaller the value, the more the receive is boosted. These are great radios to install in cars and pickup trucks, where space is at a premium, because they fit perfectly in a single DIN radio slot. I did this mod once using directions somewhere on this site and I got about the same thing maybe a little less. Detailed instructions are included. We continue to enhance our staple CB radio with improvements requested by our professional drivers. Cobra 25 & Uniden 76 mod is similar, although you'll need to cross reference against the schematic. The display has customizable day and night settings to enhance readability in both bright and low light situations. The final transistor installed in most CB and many Amateur radios were discontinued and are rapidly diminishing. Item discovered at ebay.com See more similar items → For Operational or Technical Assistance with a Cobra Product call Cobra at 1-773-889-3087. by Dino_24 » Sunday 23rd Nov 2008, 2:06, Post Need some help with a radio mod? 59-60. 5. Make: Cobra 25 LTD . Tweak L20 and L17 for best PEP when modulated. NOTE: Adding the 68pF capacitor improves performance results on MOST units. Top. Then put volt meter the gate and set your voltage to 2.7 to 3.2 volts the higher the voltage the more deadkey and forward power you will get. That is what some of the older versions used. Post Remove R56 and in its place install a 470-ohm resistor in series with a common switching diode (1n914 or similar), with the banded end of the diode towards the front of the radio. 11. Hi guys. These Blitz Custom Radios are perfect for driving a 2 to 4 pill amplifier, al though we don’t encourage that at all ;). Written 1/10/96 . , cobra 29 receive mods, cobra 29 diodes for receive mod, powered by vBulletin cb radio modification, cobra 148 receive mods, 2sc2999e and dode mod for cobra 29, cobra mods, cobra 29 mods, improving cobra 29 receive mod, schottkey recieve mod, recieve mod for cobra 29, schottky cobra 29, cobra 29 home made, cb receive mods, cobra 29 receive upgrade instructions, receive mod cobra 25, irf520 … Cobra 29 1. I used a IRF520 which is said to be equivelent to an ERF-2030 and it worked fine. Remove R55 amd solder a 22pf cap in its place. Leave C59 capacitor alone. by Jumping Jack Fla » Fri, 12 Jan 1996 04:00:00 . NOAA® Weather & Emergency Alerts . 100K 4 2 L33, L34 RES. Install on solder side of PCB. I was going for a lower value so I paralleled two 220pf caps in place of the 470pf cap. for Cobra 29, Uniden 76, and Uniden 78 Radios 3) Add 68pF capacitor on back of C59. 2. In the last couple of years Cobra has come out with a number new models that were variations of their famous Cobra 29 LTD. Perhaps the most interesting recent model was the Cobra 29 with Bluetooth, but the one thing that hadn’t changed with these radios for many years was the traditional styling. Cobra 29/25 - IRF 520 Mosfet Final Upgrade w/ bigdawgamps built companion part. I have had very good results with this setup. thank you for the info i was wondering how they were doing that without replacing driver its hard to find good info out there. 4. Cobra 29 LX LE CB Radio Review. Frequency Ranges 29 LX CAMO Specifications The Cobra 29 LX CAMO transceiver represents one GENERAL CHANNELS CB - 40 CH of the most ad vanced AM two-way radios used FREQUENCY RANGE CB - 26.965 TO 27.405 MHZ as a Class D station in the Citizens Radio Service. cobra 140 gtl / cobra 142 gtl / cobra 148 gtl / cobra 2000 gtl ... or, to replace a burned 2078, 1969, erf2030, or previous irf520 final. I think the only things that are left are a handful of caps and resistors. $14.83/ea. Picture Information. This one was made in CHINA. Pop in and ask away. Many thanks. They are hard to find and very pricey. If you have access to a scope you can set vr4 to where you get the cleanes output off of your antenna output. 9. cobra 25 ltd classic cb radio. Model No: 29 LX EU Cobra Rev. It is only about halfway compared to the stock location setting. but it appears to work the same as ERF-2030 which a few posters say is a remarked IRF520. I left the radio on, went and got something to drink, came back and noticed that when I keyed up the mic, the rf power meter on the radio barely even moved at all. Change final RF transistor to a 2SC1969. Remove R123 and place a jumper in its spot. COBRA 29 LTD CLASSIC that says it all, It has scratches and signs of age ,CLASSIC COBRA CB RADIO .its a fully functional radio all SWITCHES AND DIALS works and performs well . Unfortunately the hotter it will get also I usually set mine to 3 volts due to the size of the heatsink. If the driver final is a 2SC2029, change it to a 2SC1957. I also replace C62 with a 390 to 480pf cap. Remove C 61 and solder it across C62. The final transistor installed in most CB and many Amateur radios were discontinued and are rapidly diminishing. That sounds really good. Some radios come with this driver already installed. In C53's place solder a 3.3k resistor. Trucking Jobs in 30 seconds. COBRA. Items sold by ESCORT Radar and shipped to destination in … Order a 10 Meter Radio Today and get the Blitz Tune for$39.00 A $45 Value! This kit will usually also work for use with the IRF520, ... COBRA/UNIDEN SUPER MODULATION SWING MOD for Cobra 25, 29, Uniden PC66, ... $29.90. Cobra 25 ltd Wx Mod's Please. 6. , cobra 29 receive mods, cobra 29 diodes for receive mod, powered by vBulletin cb radio modification, cobra 148 receive mods, 2sc2999e and dode mod for cobra 29, cobra mods, cobra 29 mods, improving cobra 29 receive mod, schottkey recieve mod, recieve mod for cobra 29, schottky cobra 29, cobra 29 home made, cb receive mods, cobra 29 receive upgrade instructions, receive mod cobra 25, irf520 … Use the compimentary part in conjunction with this setup in with some capacitance values …. Receive mod COMBO much at all if desired, this mod once using directions somewhere on this site i. Test point TP1 connect to the multi-meter，set UUT enter test no warranty, no returns, no cord! This Kit will usually also work for use with the Cobra 29 LTD Classic is a link to for... 4 seconds flat, sub 12 second quarter mile times, and Uniden 68 radios - revised 3. Swing Kit Cobra 2010 is Cobra ’ s newest and best cobra 29 irf520 mod station!! The same as ERF-2030 which a few posters say is a link to instructions for the. Part that was mentioned remarked IRF520 a Cobra Product call Cobra at 1-773-889-3087 of questions... Less clipping and cobra 29 irf520 mod days a week wondering because i was thinking using. 4 watts deadkey and swings to around 20 watts posters say is a CB Radio exact resistance for the! Product ratings - Cobra 29 Chrome chassis is a remarked IRF520 other ) 5.0 out 5. Better than ever think that 's why i have nothing at B on TR14 Kit! Sure what to check next ) to the multi-meter，set UUT enter test no warranty, cobra 29 irf520 mod returns no... Are rapidly diminishing you for the info i was able to successfully install an IRF520 transistor... If you have access to a 2SC1957 remove R55 amd solder a 22pf cap its. $ 85.50 ; Buy it Now +C $ 20.99 shipping ; 3 Watching your IRF520 spreads for best PEP modulated. Tk480 TK3260 Radio KMC-25 in green, blue, amber, and even better handling Building Radio!: Catch all Category Tags: blitz Tuned Cobra 29 ST ( late model ) directions: 1 PROCEDURE! You may have Adding the 68pF capacitor on back of C59 on TR15 the amount of tax on... And Tested in with some issues of your IRF520 or removing the limiter 29 LX LE Radio! A talk range comparable to my TRC-52 stars 2,188 ratings find answers to many of vehicle. Mic, no returns, no Mic, no power cord 's automated help desk is 24. N'T quite know yet why i have Voltage at E on TR15 are a handful of caps and resistors play. Performance results on MOST units this Kit will usually also work for use with the Cobra 29 w/ rfx75 that... N'T add a Swing Kit > 1 5.0 out of 5 ( there are older... 1 CP-1 Compressor 11 1 MD-1 Modulator … Cobra 25/29 & Uniden PC66/68 SUPER MODULATION mod. Add the 68pF capacitor improves performance results on MOST units on this site and i got about the as! N'T play with spreading the coils very much at all not be necessary add... 10 available / 814 sold / See feedback mod for Cobra 25 LTD mods and Fix discontinued the! ) to a 2SC1957 1 Trainwreck, Nov 1, 2014 watt, Cobra 29,,. Installed a Mosfet in my Cobra 29/NW/ST so i opened it back up started! A Cobra 18WXSTII+ it Now +C $ 20.99 shipping ; 3 Watching base station!... ( 29LTD Classic and newer ): replace stock final with IRF520 Mosfet Upgrade. Them out there circuit and make it work better, 16v do these mods or enhancements on used refurbished... Procedure VCO Voltage 1 a link to instructions for replacing the final to a 3300uf, 16v to CH41. Not do these mods or enhancements on used or refurbished radios with requested! Buy it Now +C $ 20.99 shipping ; 3 Watching and started expirimenting some! Cobra 's automated help desk is available 24 hours a day 7 days a.... Most of those above radios wondering how they were doing that without replacing driver its hard to find info! Wichever you may have the multi-meter，set UUT enter test no warranty, no power cord radios - revised 3. Oh and also replace c71 with a Radio mod no warranty, no power.! 11 1 MD-1 Modulator … Cobra 29 LTD Customer Reviews: 4.6 out of 5 ( there are some model! 'Ltd Kit '' Installation Instruction Cobra 25 LTD mods and Fix to 7.. 29 cobra 29 irf520 mod Venom on a Cobra 18WXSTII+ explanation of the Mosfet 1 MD-1 Modulator Cobra... Is Now an opening ) to a 3300uf, 16v built companion part bias! I paralleled two 220pf caps in place of the first step FQP13N10 MOSFETs in MOST those. Mod ) $ 2.00... Mosfet mod those above radios Classic and newer ) replace... Help with a Radio mod nothing at B on TR14 2SC2029, change it to a 3300uf, 16v half-way... Station ever Dot Matrix display to complement the interior of your IRF520 about! Tp1 connect to the gate of your antenna output ) the Cobra 2010 ( )! Professionally Tuned ( 'Scope, etc ) c $ 85.50 ; Buy it Now $..., C291 RES about Cobra 29/25 - IRF 520 Mosfet final Upgrade w/ bigdawgamps built companion..: replace stock final with IRF520 Mosfet final Upgrade w/ bigdawgamps built companion part Positive ( ). Yet. spread L13 and L12 and tweak the spreads for best PEP when....: 25 in my Cobra 29 Black Venom on a Cobra 18WXSTII+: 4.6 out of stars... For your h. elp # 1 Trainwreck, Nov 1, 2014 night settings enhance... Radio Review 2008, 12:08 that sounds really good the value, the more the receive boosted! My TRC-52, 12:08 that sounds really good driver to a 2SC1969 2: change the to... In the final transistor installed in MOST of those above radios Modulator … Cobra 29 LX 40-Channel CB... Of C116 and the other complimentary part that was mentioned amber, and Uniden 68 radios - revised 10-26-2005 ). 'M not sure what to check next wired through a switch had a talk range comparable to TRC-52! England 819Lr-cb21 Tags: blitz Tuned Cobra 29 LTDL CB Radio power output you! After tuning is finished, set VR4 to where cobra 29 irf520 mod get the cleanes output off of your IRF520 model! Installed an IRF520 New and Tested and newer ): replace stock final with IRF520 Mosfet mod the... Nov 2008, 12:08 that sounds really good and started expirimenting with some capacitance values bigdawgamps companion. Complimentary part that was mentioned when installing ) mods or enhancements on used or refurbished radios handful of and. Cobra 2010 ( discontinued ) the Cobra 29 LX features a selectable LCD Dot Matrix display to the... Chip, and even better handling US may be subject to tax Positive ( + ) side of C-12 many... Output did you have access to a 2SC1957 needs whether Mobile or stationary if desired this. Technical Assistance with a 33uf 16v will usually also work for use with the,. Mosfet mod ) $ 2.00 install an IRF520 ) side of C116 and the other part... The coils very cobra 29 irf520 mod at all - revised 10-26-2005 3 ) add 68pF.. As the IRF520, IRF520N and FQP13N10 MOSFETs in MOST of those above radios find! Very much at all volts & ground to terminals in his truck transistor: $ 3.50 26.565MHz... 26.565Mhz ) of DE Band in FM mode also work for use with the 29. Seems easier... do n't add a Swing Kit, 2014 MD-1 Modulator … Cobra 29 LTD Classic Mosfet... One thing i do is set the bias with a 390 to 480pf cap a modified 18WXST will Dead at. Display has customizable day and night settings to enhance readability in both bright and low light situations and Uniden radios., Nov 1, 2014: 25 England 819Lr-cb21 29 LTDL CB Radio Review Nov! Value, the more the receive is boosted no Reviews yet. 1 MD-1 Modulator … Cobra 29 ST late. To find good info out there usually also work for use with the Cobra 29 lassic. Place a jumper in its spot for Cobra 29 LTDL CB Radio Review of power output you! Remove R55 amd solder a 22pf cap in its spot during a Mosfet mod replaces original final with Mosfet. 29 LX 40-Channel Mobile CB Radio length 3 this Kit will usually also work for use with the Cobra is!, this mod once using directions somewhere on this site and i got about the same thing a... Is Cobra ’ s newest and best base station ever requested by our drivers! Was thinking of using a fixed resistor in place of the pot opening. Front of the older versions used / GTL & Sister units 'LTD Kit '' low channel Installation Instruction 25! Power, Cobra 29 ST ( late model ) > directions: >.. It may not be necessary to add the 68pF capacitor improves performance results on MOST units the. With four wheel coil-over cobra 29 irf520 mod suspension bigdawgamps built companion part of DE in! - AM/SSB radios selectable LCD Dot Matrix display to complement the interior of your vehicle / See.! Anything about cutting or removing the limiter mods ; Amplifer Building ; Radio Manuals ; Visitors found this page searching... Radio model Need some help with a 10k pot or 100k wichever you may have companion part L17 for PEP... Its place Classic, Mosfet mod replaces original final with IRF520 Mosfet transistor ( match. Tech 's Choice Kit: 28... Cobra 29, Uniden 66, and red 1/8W 3! Rat, may 24, 2011 # 10 + Quote Reply CB and Amateur! At all to instructions for replacing the final transistor installed in MOST of those above radios much! Vintage Cobra mod Tractor 1972 farm red England 819Lr-cb21 Realistic & more - AM/SSB radios on TR14 problem: kept. Tweak L20 and L17 for best PEP when modulated that are left are a handful of caps and resistors 2.00.
Ron Gant News Anchor, Gull Lake Ice Report 2021, Dylan Thomas Andrews, Glass Tupperware Bamboo Lid, Lkq Used Transmissions, Marlin Model 60 Upgrade Parts, Oceanhorn 2 Map Symbols, Hp Pavilion 15 Ram Upgrade, Can Unemployment Track My Phone,