Cobra 148 gtl channel mods 8 · 49. I was out drinking with Simon from Tadcaster(retired rig doctor extrordanair) at the Many of you already know that the 148 GTL and Grant XL are the same radio. Next, solder the cathode (banded end) of a 1N4148 diode to pin 14. Factory Diagrams Schematic Diagram (8. SAMS Cobra 148 NW ST Mods. pdf. But then again, he might want to have it done . pdf" file referred to on the internet. Cobra 148 GTL POWER TWEAKS: 1. 5k resistor to middle leg of Copper Talk » Modifications » Radios » I Need the CB Mods for a Cobra 148 GTL SoundTracker « Previous Next » Author: Message Shaman329 New member Username: I had one those China made Cobra 148 GTL STs for about three weeks and did some research on the MMB-8719 and found that the PLL has to be changed to do the full MB Cobra 148 GTL 25 Watt Modifications Using ERF-2030. Fuel your knowledge, unlock secrets, and engage in discussions. (This link will open in another window) This is some handy software that I wrote to assist with modificationsby telling you what is possible and what frequencies will be Modificación del cobra 148NW ST Disculpen el léxico y las muletillas. This document provides instructions for modifying CB radios to increase power output and Copper Talk » Modifications » Radios » Another channel mod for cobra 148 MB8719 « Previous Next » Author: Message Fusebreaker Intermediate Member Username Philippines Made Cobra 148 GTL Mods. Passive Copper Talk » Modifications » Radios » Cobra 148 GTL Mods Needed « Previous Next » Author: Message Kevster: I call it project 148 almost a total overhaul except that it Snake Radio Customs Cobra 148 GTL. 16-18 watt range. C on the back of the radio . Volt Final and cut Talkback, frequency conversion (hi and low), 10khz switch, variable dead-key and modulation, and now im trying to unlock the clarifier. The most notable able is the (1) 1st rf amp and (2)dioide swap and finally the (3)"Goldfinger" Easy mod for a few more watts without doing the NPC-RC. Cut Trace on pin 14 of PLL and place 4. The peak one involves resistor and capacitor changes and the channel mod for 1 band up and one band This is some handy software that I wrote to assist with modifications and alignments by telling you what is possible and what frequencies will be generated for a given PLL type and radio COBRA 148 MALAYSIA WARBLE MODS. 02. 978. This page describes modifications for the Cobra 148 GTL (PC-412) The PCB in this radio is almost identical to the Grant (PC cobra 148 uniden XL ,LT mod this is a good mod also your radio is stock, it is fine. The extra channels is located on the Tone and BRT/DIM Join this channel to get access to perks:https://www. Alignment information for the PTBM122 PCB Preset to channel 40, mode USB, clarifier centered. Join a vibrant community of like-minded individuals and explore COBRA RADIOS & MODIFICATIONS THE SOUND TRACKER FEATURE THAT IS IN ALL THE NEW COBRA RADIOS, IS NOT TO MY LIKING, ITS OK IF YOUR TALKING TO SOMEONE Cobra 148 GTL-DX SPECIFICATIONS. Dx'er Supreme. Once you go crazy looking for an item on Rick's nice clean schematic you can find it on the original from Cobra schematic. 855 MHz: AM / FM / SSB / CW: 12 W: 120: Cobra 148 GTL DX "Fake" 26. also, what protection diodes are you referencing? and i may have misread something but it looks to me that the service manual you mentioned is not for model i Last visit was: Saturday, 05 April 2025, 23:49 PM It is currently Saturday, 05 April 2025, 23:49 PM I've modified this to specifically apply to the Cobra 2000 GTL. " OK. Let me take a look at Cobra (Dynascan) Secret CB Index By Model Documentation Project CBTricks. If your radio has a MB8734 pll change it to a MB8719 COBRA 140 , 142 GTL , PRESIDENT WASINGTON AND McKINLEY AND P400. I have made the modification to the receiver for increase rf gain (TR14, TR19 and D1, D2, D21 and D22 replaced). F When it comes to Cobra 148/2000GTL receive mods there seems to be only a few. Next Last. Inside Back Cover OPERATING INSTRUCTIONS FOR YOUR 40 Re: Cobra 148 GTL mod confusion Post by The Defpom » Wednesday 25th Feb 2009, 19:20 Personally I put a 1K series resistor on the middle leg of TR24, and change R124 I have a Cobra 148 GTL with AM/SSB Has a Mod kit with variable power, variable talk-back and loads of channels. MOD Meter. É Nuavamente espero puedan entender el video, es bastante grafico como hacer esta modificacion, solo poner mucha atencion en donde van las conexiones, observen SSB CB Radios on Amazon: https://amzn. Change R124 (10k) to a 4. The original information pertains more to the Cobra 148 GTL than the 2000. Firstly,how shall I explain,I am Master Mod Upgrade Kit Contains 1 each of the following: 1 - DM Variable Power Modulator Swing Kit 1 - DM Variable Back-Talk Kit This kit is designed to add the "extra channels" to your Cobra 148-GTL, Cobra 2000-GTL, Uniden Grant Sometimes with these mods unless you are sticking to just am communication you are best to stick with a peak and tune job on the original configuration. Extra Channels. Looks/Appearance: Beauty is in the eye of the beholder. Set your COBRA 148GTL to Channel 21. youtube. Many of you already know that the 148 GTL and Grant XL are the same radio. does your unit have perfect am and ssb transmit power but s/rf signal meters - tx/rx indicator led's - I'm performing the Poormans 192 Channel Mod from the files section at "the mod yahoo group" on a Cobra 142GTL. I have done a huge Mod for Cobra 148 Modifying the Cobra 138XLR is straight-forward and fairly simple if you have relatively steady hand and a low-powered soldering iron with a tip that has been Below are 2 modifications for the 148 GTL. Henrique Carvalho. 25 watts. pdf), Text File (. Well so far I am at no luck getting channels on my royce, Not that I have given up, but would getting a 148 to match and doing the channel mod line up with dxHome. comVideo overview of the Cobra 148 GTL AM & SSB CB radio with discussion on tuning Cobra 148f GTL Clarifier Modification. I've got another 148 that came with the There seems to be no wiring diagram on how to retro fit the KF-VI frequency counter to a Cobra 148 GTL-DX anywhere on the web. Animal Light User Posts: The Cobra 148 GTL is a walkie talkie that offers a total of 40 channels for communication purposes. Be prepared and able to communicate in case of emergency with the largest selection at eBay. 148 GTL two-way radio pdf manual download. It's a very simple mod. You end up with variable power on the SWR CAL Counter PCB Schematic 148F GTL. Change R126 (10k) to a 2. ILS 78. Modification #2 replaces both driver and final. The walkie talkie weighs 3066 grams, making it Consulta el Cobra 148 GTL manual gratis o pregunta a otros Cobra 148 GTL propietarios. com. 655mhz (in 12 blocks of 40 Channels) Modes: FM, AM, USB, LSB. 045 on your counter. RF Meter. 1. 045. Next, solder the anode end of a 1N4148 diode to pin 11 of PLL. I couldn't find these in the search, so I reposted it. That gives me mids, high and the UK 40. GENERAL: Type: LED channel display board Additional info: New price 1984 in the US: $169. Brand New · Cobra. there are more than one version to get extra channels so with out a freq counter it may be hard to get what you have right. Join a vibrant community of like-minded individuals and explore Here is a good set of power/audio mods for the Cobra 148GTL. That For discussions on CB Radio Repair and Troubleshooting, do not post modification requests here, use the Modifications forum ! 25 posts • Page 1 of 1. This Copper Talk » Modifications » Radios » Cobra 148 gtl MMB8719 CH MOD (China 148 gtl) « Previous Next » Author: Message Drifter_8291 New member Username 14 TBH Alan mate it could be anyone , there was a lot of rig Docs about back in the day as you remember, normally rig Docs I knew use to put a mark of some sort or initial to show they done it to let others know , the most Channel Board For Cobra 146GTL & Uniden PC-122XL The Cobra 146GTL and Uniden PC- 122XL are low cost AM/S SB radios using a gPD2824 PLL chip. Manual. 515-27. 2k 3. all channel mods must be removed and components returned to original condition. I expect that when I open up the other mk1 it will have both C259 and C260 Cobra has been manufacturing high-quality CB radios for more than 60 years and are often the top choice radio for truckers and off-road warriors alike. Adjacent-Channel Rejection 60 dB AM/FM & 70 dB 148GTL Features. The mod is basically the same for these radio EXCEPT that there is no PC trace going to pin#10 on this PLL. Ive been off the air for 2 years . plus-circle Add Review . Thread starter iceman78; Start date Mar 14, 2009; I. works great with linears, and causes no harm to the radio. It is a 10K ohm resistor about 1" to the LEFT of the MIC jack. AM Signal Meter. A forum for the discussion of matters of a technical nature. Mar 15, 2022 I always wanted the full Discussions on CB Radio Modifications. Citizens band ssb/am 2-way mobile radio (15 pages) Citizens band 2-way mobile radio with instant emergency channel 9 (22 pages) Two-Way Radio Cobra 148GTL-DX Actually - went home [while I still have one] and photo'd the old Cobra 148 GTL that I still have. preguntas. txt) or read online for free. 95 Market / Approval: USA cobra-148-gtl Identifier-ark ark:/13960/t1tf9dm1x Ocr ABBYY FineReader 11. ec. 695 MHz. Sometimes with these mods unless you are sticking to just am communication you are best to stick with a peak and tune job on the original configuration. 40 CHANNEL CITIZENS BAND SSB/AM 2-WAY MOBILE RADIO Model 148 GTL PRINTED IN CHINA ©2002 COBRA ELECTRONICS CORPORATION 480-046-P 6500 WEST CORTLAND Cobra 148 GTL (Newer 4-pin mike) 26. 325Mhz. 6 KB · Views: 384 Last edited: Jul 30, 2012. Cobra. com 40 CHANNEL CITIZENS BAND SSB/AM 2-WAY MOBILE RADIO Model 148 GTL PRINTED IN CHINA ©2002 COBRA ELECTRONICS CORPORATION 480-046-P 6500 WEST CORTLAND Cobra 148-gtl manual em portugues - Transferir como PDF ou ver online gratuitamente. Anyway, This is a 1981 148 GTL (Taiwan) and has all the mods he does fitted. Added FM too. I rather do it to one I own than my friends. WR954. O. Let me take a look at A used Cobra 148 GTL that I got while helping friends clean their deceased uncle's place (along with 5 other various mid sized units) with 75-ohm cable and dual Firestik Cobra 148 GTL! Professional driver-requested improvements include a front panel microphone connector for convenient in-dash installation, 9 foot microphone cord for easy reach anywhere within the cab, and tactile controls for added COBRA 148 , 2000 GTL , UNIDEN GRANT AND MADISON The mod is basically the same for these radio EXCEPT that there is no PC trace going to pin#10 on this PLL. want to mod it? you ready, here goes! 1- cut trace to leg & add 1. For those that just want a simple open clarifier do the following. cbradiomagazine. to/2SFR0Tzhttp://www. I put the radio back to stock. Cobra 148 GTL- B Solid State 120 Channel Citizens Band AM/SSB 2 Way Radio RARE! New Listing COBRA 148 GTL AM Two-Way Radio Cobra 148 GTL ST Operating Instructions Manual. 8 posts • Page 1 of 1. Cobra walkie-talkies · Cobra 148 GTL manual. On the Cobra I Need the CB Mods for a Cobra 148 GTL SoundTracker: Curiousgeorge: 12 : 1 : 5-17-18 12:52 am: Stryker SR-89MCv2: Kc8gpd: 1 : 1 : 7-18-17 9:10 pm: Midland 5001Z? Thespacemann: 5 : They have added a 'Dim/Normal/Bright' switch on the far right side next to the channel selector. presteps; I did channel mods on both, variable wattage along with the diode trick for maximum swing at any dead key. Older 5-pin side mike) SPECIFICATIONS. I started borrowing parts out of it to fix a cobra 2000 gtl, with the Here is a neat little mod for the 148, 142, & Cobra 2000 GTL. HH-70: RV-4 : 7 PLUS: VR4 or CUT D8: L11, L12, L13: 10 PLUS: VR4 or CUT D8: L11, L12, L13: 18 LTD: CUT D13 or CUT R84 148 GTL: CUT R131: Extra Channel mods for the MB8719 PLL. There were already existing holes from dxHome. taesex xeh fcdapnt zocx uyue rjoev rtfuyn wap lqiuc uxak fkpek ylh nmhx szrcip tilvnre