Cobra 148 Gtl Swing ModIt keys 4 watts and swings to about 10 or 12 after the mods. 405 MHz: High: Modifications and fixes: Reviews: Options / Accessories:. Cdc1813 1 2-26-09 8:29 am 93tCdc1811 1 2-26-09 8:25 am Remove talkback magnum s3-80Tech8082 1 2-23-09 7:03 pm COBRA 148 GTL ALIGN + TUNETech8088 1 2-04-09 8:04 pm Thinking about buying a Galaxy 959!Twowatt5 1 2-02-09. 25 earthquakes in the past 365 days. Cobra 148 GTL Power Tweek and Modulation 1) Change R126 to a 2. just depends on what you want to drop the dead key …. 00 (add to cart button at bottom of page) ITEM#: VMOD148 0; Note: heat shrink, & or wire color may vary from unit to unit. Copper Talk: COBRA 148 GTL MOD HELP. COBRA CB RADIO T-SHIRT BRAND NEW - 19 25 29 148 150 200 2000 GTL. put your mods on switches whenever possible. it also says that if these dont provide enough boost, then replace R126 with a 4. If you bought the swing kit made for the Cobra 25/29 series of radios it will not work in the 148 due to the differences in the modulation circuits. TUNE UP TIPS: L11 is the TVI trap. RadioMods Cobra 148 GTL modification page. Designed to maximize space in the compact environment of today's vehicles. DIY Radio MODS!LINKS! Web Store My Cart: 0 items. This is one mod. Cdc1813 1 2-26-09 8:29 am 93tCdc1811 1 2-26-09 8:25 am Remove talkback magnum s3-80Tech8082 1 2-23-09 7:03 pm COBRA 148 GTL ALIGN + TUNETech8088 1 2-04-09 8:04 pm Thinking about. Cobra 148 gtl swing mod">Cobra 148 gtl swing mod. Cobra 29 LTD super modulation modification. The Export/Galaxy kits that we offer on ebay are the ones which work with the 148gtl. I now have a Cobra 148 GTL sside 5 pin mike. The most I've ever seen on a 1969 final was on a Cobra 148F-GTL on sideband and it was an effort for it to make 22 watts. Cobra 148 gtl philippines mods. A page with modifications for the cobra 148 gtl. RadioMods Cobra 148 GTL DX modification page. Post by Discount Ham Radio onAug 6, 2006 at 11:14pm. I do not recommend cutting R131 which limits the modulation. "Taking a nice radio like a Cobra 2000 and doing a swing mod to it is butchering to me. The 148/2000 radios use a totally different modulator circuit for AM. You end up with variable power on the SWR. This page will describe how to add more bands to the Cobra 148 GTL DX and other radios using the PB010 PCB. The R you are talking about is part of potential divider R77 and R259 this is across the RX + line and feeds D59/60 and his only need on later radio like 148 NW ST. astatic road devil mods, cobra 29 ltd classic light mods, http:www. "Taking a nice radio like a Cobra 2000 and doing a swing mod to it is butchering to me. RadioMods Cobra 148 GTL modification page. I'm really amused about the myth that clipping the modulation limiters on all radios will cause them to overmodulate. Has anyone tried these mods?. RadioMods Cobra Mods and Tuning List A page which list's the modulation boosts and tune ups for the cobra range of radio's Modifications Cobra Modification And Tuning List Click Here to load into my sites frames (you are missing out if you are not in my frames !) This counter shows the number hits since the 1st September 1998. Someone was selling a virgin Filipino 148 in great condition and with all the accessories for $50 so I picked it up and started modifying it right away. COBRA 148- 2000 SM-148-2000. Cobra 148 GTL-DX ( PC-879 & PB-010AB ) Electrolytic Capacitors Kit $20. Cobra 148 GTL Power Tweek and Modulation 1) Change R126 to a 2. The Cobra 148 GTL will do about 15 to 17 watts peak. Each angle of view and every map style has its own advantage. Cobra 148 GTL VFO 100W + Its a old cobra 148 GTL with a AD203 stinger board. It’s one of the most popular modifications to have done to your CB radio. Variable RF power mod for Cobra 142 GTL. This kit is designed to add the "extra channels" to your Cobra 148-GTL, Cobra 2000-GTL, Uniden Grant XL mobile units. 2- replace r126, r124, & r131 with 4. Cobra 148 GTL POWER TWEAKS: 1. A page with modifications for the cobra 148 gtl. COBRA RADIOS & MODIFICATIONS. It’s one of the most popular modifications to have done to your CB radio. I now have a Cobra 148 GTL sside 5 pin mike. if the cobra 148 gtl Dx has the same board here is a mod The tweak #1 ~ Remove TR32 #2 ~ Change R174 (10K) to a 2. This set uses a pair of binary adders to alter the programming on the MC145106 PLL,this programming can. Posted on Saturday, January 27, 2007 - 11:53 am: The 148 gtl from that time frame will talk loud and clean with the mod limiters clipped. These radios sound the same whether an NPC mod is done or not. Modification: Change stock final to a 2SC1969 Change C71 to a 33uf 16volt polarized electrolytic capacitor. CB Radio Modifications. 29GTL/LTD/CLASSIC Just turn up VR-4 for Max modulation, Adjust L17, L20, L21, L16 and L14 for max RF output. Variable Dead key (carrier) MODULATOR / Swing kit for …. Hijacking that circuit with a diode and a resistor will make it 'swing'. Cobra 148 GTL-DX (By Dynascan) SPECIFICATIONS. Cobra 148gtl, Unident Grant mods. This page will describe how to add more bands to the Cobra 148 GTL DX and other radios using the PB010 PCB. The GE radio is gone but I still have the amp. 5 watts dead key, it should swing 10-12 watts. A nice little mod is the variable power mod put onto the front panel instead of drilling the back. The 4-pin front panel mic connector allows the 148 GTL to be installed above, in, or under dash conveniently and easily. There are other things you can do and although these. Cobra 148 GTL DX+. comforums50-Radio-modspage2, cobra 29 ltd classic mods, Cobra 148 NPC mod, hr2510 swing mod, cb radio mods, hr2510 mods, cobra 2000 gtl mods, rci 2950 battery location, trc443 cb mods, battery location for hr2510, swing mod for cobra. 6) Adjust VR11 for maximum PEP on SSB. I've assembled the "swing kits" with a pot for power level before for the cobra 29's but I want to put one on my 142 for AM. 148 GTL: CUT R131: VR10, (ssb)VR11: 148 GTL-DX (early prod. Variable Dead key (carrier) MODULATOR / Swing kit for the Cobra 148 GTL, Cobra 2000 GTL, & Uniden GRANT XL CB Radios $15. 5 or greater) 0 earthquakes in the past 24 hours. This will allow you to lower the dead key and still have the full swing capability. 2 monolithic, this will widen up the audio on AM. RadioMods Cobra Mods and Tuning List. This set uses a pair of binary adders to alter the programming on the MC145106 PLL,this programming can be changed to expand it to cover so many channels that the set would need to undergo major modifications to be able go to the new. Cobra 148 GTL mod | WorldwideDX Radio Forum dxForums Citizens Band Related CB and Export Equipment and Accessories You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs. It lists a power modification for the Cobra 148 GTL that calls for changing the values of "R126 (10K)to a 2. 3D2N - Mount Bromo, Tumpak Sewu, Kawah Ijen Crater start from Malang or Surabaya. Its located up front of the radio almost in the center. Re: Cobra 148 GTL mod confusion Post by frogman296 » Wednesday 25th Feb 2009, 21:10 The Defpom wrote: Personally I put a 1K series resistor on the middle leg of TR24, and change R124 and R126 to 4. On converted to electronic relay so the radio can be used in VOX mode! As a teenager I use to put on a pair of headphones and do my homework. Re: Any COOL Mods Cobra 148GTL DX Mk2 by wheel bender » 13 Aug 2012, 07:32 A nice little mod is the variable power mod put onto the front panel instead. the forest ultimate cheat menu. it is a very common mod for people to do to 148gtl's. SAMS PHOTOS: 249 MODULATION: Cut R131 AM POWER: VR10 SSB POWER: VR11 CHANNEL TWEAKS:. Posted on Saturday, January 27, 2007 - 11:53 am: The 148 gtl from that time frame will talk loud and clean with the mod limiters clipped. For a low key and full swing, try this modification. to me this mod seems to just stress out the parts in the circuit. The NPC_rc mod is not worth the trouble do a simple peak and tune and set the deadkey to about 3 watts,set ssb power to 13 or 14 watts max as lou franklin and i discussed through email swing is pointless 100% modulation is a radio with a 4 watt deadkey swinging to 8 watts that is 100%,at 80% modulation distortion starts to kick in. Parts needed: 1 10 microfarad, 25+ volt electrolytic capacitor Wire or other suitable. Locate resistor R264 and lift the right leg of the resistor from the board. This will allow you to lower the dead key and still have the full swing capability. go look for a used cobra 148 or grant xl & experiment with that. High quality transceiver designed to maximize frequency response and image/spurious rejection. because of the radio in particular, agreed. Cobra 148 GTL AM-SSB CB Radio TIGER 120 the SWISS CB clone of COBRA 148GTL MK1 COBRA 148 GTL F EVALUATION FOR PETE Cobra 148 GTL Vs. for the 148 version radio I put the npc mod in it. If you bought the swing kit made for the Cobra 25/29 series of radios it will not work in the 148 due to the differences in the modulation circuits. On SSB you should set it for a modulated peak of 14-16 watts. Parts needed: 1 10 microfarad, 25+ volt electrolytic capacitor Wire or other suitable material to create jumper shunt Blown up, non-operational source radio for parts. Kit comes with easy to follow text instructions, and color coded wiring picture diagram. I hear a lot about the final c1969 mod so I looked at fhe finals and it had c1969 on it. Copper Talk: 25 watts ssb on a cobra 148?. you can turn the dead key down to 1 1/2 watts to 2 watts and the mod will give you full swing to the radio on AM. Has anyone tried these mods?. & WHEN you find a mod you like, you may feel it is acceptable to be placed in the 2000, on a switch. Any COOL Mods Cobra 148GTL DX Mk2. COBRA 148- 2000 SM-148-2000 Charles Quinnett 13 subscribers Subscribe 1K views 5 years ago East to install module for super modulation on Cobra GTL-148 AND GTL-2000 BASE. cobra 148 uniden XL ,LT mod this is a good mod also your radio is stock, it is fine. Here is a neat little mod for the 148, 142, & Cobra 2000 GTL. I have found by study that this is the most direct way (while best sounding) of smashing ST more less. COBRA 148GTL (F) LED FREQUENCY DISPLAY*DISCONTINUED*FULLY TESTED BRIGHT & CLEAR $45. Variable Dead key (carrier) MODULATOR / Swing kit for the Cobra 148 GTL, Cobra 2000 GTL, & Uniden GRANT XL CB Radios $15. 855 MHz in three bands Channels / tuning steps: 120 (3*40) Mode: AM / FM / SSB / CW Frequency control: PLL ( Mk 1: MB8719. 10 shipping or Best Offer Cobra 148 GTL SSB CB Radio $98. 7K, that increases your mod level on all modes with no ill effects. Cobra 148 gtl philippines mods Home Forums Menu Rich Text Content rich_text Page Comments 54991 Owners Manual DIAGRAMS Schematic (Courtesy of Rick Jackson Euro Radio Co) This schematic has notes & test voltage info. 7K, that increases your mod level on all modes with no ill effects. Copper Talk: Cobra 2000gtl modulation mods. East to install module for super modulation on Cobra GTL-148 AND GTL-2000 BASE. works great with linears, and causes no harm to the radio. Unlocking a clarifier on a radio with no built in frequency counter is a bad idea. NOISE BLANKER IMPROVEMENT! D1 & D2 can also be Replaced with ECG-583 Schottky Diodes. here they are: 1. Cobra 2000 BIG AUDIO!!! at silicon two one two dot org Today, we’re going to modify a Cobra 2000 GTL base station for BIG AUDIO. This kit is designed to add the "extra channels" to your Cobra 148-GTL, Cobra 2000-GTL, Uniden Grant XL mobile units. Most of the original 148 GTL diagrams had lots of errors, that why I have re-draw It. The Tx will track exactly with the Rx (confirmed on recently calibrated IFR1200S). RadioMods Cobra 148 GTL DX modification page This page will describe how to add more bands to the Cobra 148 GTL DX and other radios using the PB010 PCB. cobra_148_gtl_sm_pg48_pg63. You end up with variable power on the SWR CAL knob, but don't loose the. These steps should be absolutely taken before using "common" found mods for. And making the carrier level variable from the front panel involves cutting a foil trace and running three wires to the control. Cobra has really shot themselves in the foot with this new radio, why you ask? I'm getting to that but first let me say that Cobra has been the industry leader in producing good quality CB radio's down through the years, there was the great line of Mobil "AM" radios such as the 25LTD, 29LTD. All Products Variable Dead key (carrier) MODULATOR / Swing kit for the Cobra 148 GTL, Cobra 2000 GTL, & Uniden GRANT XL CB Radios. This is the mod that compresses the negative modulation peaks and allows the average power to increase based on the modulation percentage (aka the NPC mod). Cobra 148 GTL POWER TWEAKS: 1. Quantity: More than 10 available 25 sold / See feedback. To control the carrier in a 29, parts must be added for this, since it is not built in. Philippines Made Cobra 148 GTL Mods. Re: Cobra 148 GTL mod confusion Post by frogman296 » Wednesday 25th Feb 2009, 21:10 The Defpom wrote: Personally I put a 1K series resistor on the middle leg of TR24, and change R124 and R126 to 4. Making it 'swing' is different as a result. I do not put a variable in a single final radio. 7k resistors 3- adjust vr10 for 2-3 watts (or wire to variable) 4- solder positive side of 10uf 35 volt cap to pin 9 of ic6. RadioMods Cobra 148 GTL modification page. 00 (add to cart button at bottom of page) ITEM#: VMOD148 u0010 0; Note: heat shrink, & or wire color may vary from unit to unit. 2 MB · Views: 21 Last edited: Oct 25, 2012. Lowers you deadkey and allows for full forward swing on modulation. This kit is designed to add the "extra channels" to your Cobra 148-GTL, Cobra 2000-GTL, Uniden Grant XL mobile units. Their Sideband radios such as the 146, 148 gtl and 2000 were superb, they were stable and a radio you could be proud of. remove the wire from the high side (+ or full cw pos) of the clarifier 7. vr10 is the control for dead key. add 800 ohm resistor to the collector of TR24. Cobra 148 GTL modifications. I guess if you only want to talk a couple miles a swinging. just dropping the dead to 2 watts to run a amp will actually lower the swing also. Start by choosing the type of map. 26-09 9:23 am Delta force mikeBarakuda3186 1 3-11-09 2:49 pm New 2950dx coverageNorm22 1 2-28-09 10:45 pm RCI 2950 NPC mod needed. The best way of doing this is to replace the swr/cal single control with a dual pole control like the vol/sq and run the power wires to the outer control. Next time you look in the original 148 GTL PCB PC412 you will find that the R is not fitted. 80 shipping or Best Offer 28 watching 148 gtl $225. The Cobra 148 GTL will do about 15 to 17 watts peak. Talkback, frequency conversion (hi and low), 10khz switch, variable dead-key and modulation, and now im trying to unlock the clarifier. Works best on unmodified radios. Cobra 148GTLF Cobra 2000GTL Undien Grant XL Uniden Grant LT 1. cobra 148 finals Post by lemans66 » Sunday 26th Aug 2007, 4:59 I have a 148gtl made 1989 in panama. Variable Dead key (carrier) MODULATOR / Swing kit for the Cobra 148 GTL. 148GTL+F Lift the Emiter leg of TR24 and insert a 1K in series with it, to ground. This is the mod that compresses the negative modulation peaks and allows the average power to increase based on the modulation percentage (aka the NPC mod). the Cobra 148 GTL. if the cobra 148 gtl Dx has the same board here is a mod The tweak #1 ~ Remove TR32 #2 ~ Change R174 (10K) to a 2. This page will describe how to add more bands to the Cobra 148 GTL DX and other radios using the PB010 PCB. doffo With that radio and amp combo set the Grant xl to 1. The 148/2000 has a carrier control trimpot. here is a link to a map of the channels you have: MB8719 PLL since your switches are left to right, instead of up and down, i dont know which way to tell you to switch them, but i can tell you that to be on the normal 40 channel CB band, you want both switches the same way. The Cobra 29 radio uses a voltage step-up transformer to modulate the driver and final transistors. Here is a neat little mod for the 148, 142, & Cobra 2000 GTL. connect pin3 of IC4 to the high side of the clarifier 8. Conflicting stories of Mods for the 148 GTL. works great with linears, and causes no harm to the radio. GENERAL: Type: Citizen band / "Freeband" / Export transceiver: Frequency range: 26. to me this mod seems to just stress out the parts in the circuit. RadioMods Cobra Mods and Tuning List A page which list's the modulation boosts and tune ups for the cobra range of radio's Modifications Cobra Modification And Tuning List Click Here to load into my sites frames (you are missing out if you are not in my frames !) This counter shows the number hits since the 1st September 1998. Cobra 148 GTL: Unlocking the Clarifier. RadioMods Cobra 148 GTL modification page. A page which list's the modulation boosts and tune ups for the cobra range of radio's. Cobra Mods and Tuning List">RadioMods Cobra Mods and Tuning List. Bondowoso, East Java, Indonesia from many different perspectives. Rembangan, 12 km to the north of Jember, is a mountainous tourism object complete with swimming pool, hotel and the coffee agro tourism of the Rayap plantati. Install a 1N4001 diode in series with the resistor, being sure to place the banded end of the diode in the vacated main board hole. The 148/2000 has a carrier control trimpot already built in. maybe a tech can lend some info as to what this mod is actually doing. If you bought the swing kit made for the Cobra 25/29 series of radios it will not work in the 148 due to the differences in the modulation circuits. This kit comes with installation instructions for the following radios ONLY: Cobra. NOISE BLANKER IMPROVEMENT! D1 & D2 can. Cobra 2000 BIG AUDIO!!! at silicon two one two dot org Today, we’re going to modify a Cobra 2000 GTL base station for BIG AUDIO. 5) Adjust VR10 for maximum PEP on AM. (Power up the radio, put it in LSB or USB, set the mic gain to minimum, remove the wire from test point 8, insert a milliamp meter in series between the test point (which is positive) and the wire, key the mic, and adjust VR9 until the meter reads 50 mA. Those two transistors will drive more power. Cobra 2000 GTL Vintage Lights Enhancement. Copper Talk: Cobra 148 GTL. You will be able to select the map style in the very next step. want to mod it? you ready, here goes! 1- cut trace to leg & add 1. Cobra 148gtl & 2000 Super Mod. Cobra 148 swing mod Cobra 148 swing mod 1038 views MRH0TROD Dec 4, 1999, 12:00:00 AM to that guy that said he knew how to do that mod for the Grant XL could you explain to me how. maybe a tech can lend some info as to what this mod is actually doing. 5k resistor to middle leg of tr24. Cobra 148 GTL-DX (By Dynascan) SPECIFICATIONS GENERAL Type: Citizen band / "Freeband" / Export transceiver Frequency range: 26. You’ll often hear people say on the radio that their Cobra 29 LTD has had a “swing mod” or “Super mod” done to it. Cobra 148 Clarifier Mod Problems. The rest of the work is done on the parts side of the board. The Export/Galaxy kits that we offer on ebay are the ones which work with the 148gtl. cobra 148 uniden XL ,LT mod this is a good mod also your radio is stock, it is fine. COBRA CB RADIOS MODIFICATIONS. fr">Cobra 148 gtl swing mod. Cobra 148 GTL mod. Modifications Cobra Modification And Tuning List. Cobra/Uniden Super Mod Swing Kit. Condition: For parts or not working. Copper Talk: Cobra 148 GTL modifications. Cobra/Uniden Variable Power Mod. 3 swing 12 watts peak on a 148 is just as loud as my General Lee and it swings 30-35 watts. Cobra 148GTLF Cobra 2000GTL Undien Grant XL Uniden Grant LT 1. It lists a power modification for the Cobra 148 GTL that calls for changing the values of "R126 (10K)to a 2. 2k #3 ~ Change R187 (10K) to a 2. I do not put a variable in a single final radio. Back in the 70's I did alot of playing around with a GE AM/SSB unit with a 50w Polamar amp. Cobra 148gtl & 2000 Super Mod. Re-tune L37 and L38 for maximum AM forward power. Earthquakes in Jember, East Java, Indonesia. Volting a Cobra 148 GTL final?. NEW INFORMATION ON THE COBRA 148 NW ST. Cobra 148 NW ST Mods. 00 EACH 148-XL Extra Channels Kit GALAXY MOBILE & BASE Extended Frequency "Extra Channels" Kit. Someone was selling a virgin Filipino 148 in great condition and with all the accessories for $50 so I picked it up and started modifying it right away. This page describes modifications for the Cobra 148 GTL (PC-412) The PCB in this radio is almost identical to the Grant (PC-409) and the Madison (PC-411) and it can be used for comparisons This set is much the same as the Grant/Madison/Washington, as it uses the MB8719 PLL so adding another 40 channels is easy !. The NPC_rc mod is not worth the trouble do a simple peak and tune and set the deadkey to about 3 watts,set ssb power to 13 or 14 watts max as lou franklin and i discussed through email swing is pointless 100% modulation is a radio with a 4 watt deadkey swinging to 8 watts that is 100%,at 80% modulation distortion starts to kick in. My question is this, are these 1/4 watt or 1/2 watt resistors? Also it says on page 60 to change the final to a GE-66 (10 amp) or NTE-152 (7 amp). 2K RECEIVE IMPROVEMENT! The stock AM dection diodes are 1N60P Devices, Replace them with ECG-583 Schottky Diodes. Graphic maps of the area around 8° 12' 42" S, 113° 58' 29" E. Cobra 2000gtl modulation mods. it is a very common mod for people to do to 148gtl's. Post by Discount Ham Radio onAug 6, 2006 at 11:14pm. 001% Clarifier or Delta tune: Coarse (RX/TX): ±7 KHz. you can turn the dead key down to 1 1/2 watts to 2 watts and the mod will give you full swing. The radio has some sort of swing kit in it but I don't know where to look on the board to find it. Here is a neat little mod for the 148, 142, & Cobra 2000 GTL. 1 earthquake in the past 7 days. On ebay people often will tell you that the radio they are selling has had a swing modification done to it to make it a “screamer”. Variable RF power mod for Cobra 142 GTL I've assembled the "swing kits" with a pot for power level before for the cobra 29's but I want to put one on my 142 for AM. I was tring get a litlte more swing out of it using info from this forum. 7k resistors 3- adjust vr10 for 2-3 watts(or wire to variable) 4- solder positive side of 10uf 35 volt cap to pin 9 of ic6. 1992 Cobra 148GTL recommendations. Variable RF power mod for Cobra 142 GTL. connector on the channel selector PCB. replace the resistor in front of TR26 with a 270ohm. Adjusting SSB/AM power on Cobra148/GrantXL question. The first thing that happened to Cobra was that Unidenwanted to raise the price on there PC boards, Cobra did not like this so they got some other company to make there boards cheeper!. Change R114 to a 10K, and C46 to a. The reason is the radio runs class "C" at the final on AM, but is runs class"A" on SSB. Short pins 3- (red wire) and 5 (yellow wire) of the. Bondowoso, East Java, Indonesia: Maps. KDC SUPER MOD. Cobra 148 GTL-B Printed Circuit Board PTBM122DOX (Cybernet Chassis) RX: Change C135 to a 1uF non-polarized electrolytic Change C146 to a 1uF non-polarized electrolytic TX: Change C145 to a. Now if you want to talk about a 1307 driven by a 1306, which will swap out to the 2000-GTL, 148 and 148F-GTL and the Grants. 3) Remove TR24 4) Re-tune L37 and L38 for maximum forward AM power. Variable RF power mod for Cobra 142 GTL I've assembled the "swing kits" with a pot for power level before for the cobra 29's but I want to put one on my 142 for AM. Variable Dead key (carrier) MODULATOR / Swing kit for the. I now have a Cobra 148 GTL sside 5 pin mike. I found angelfire and cbtricks but. Maphill lets you look at Sempol, Kab. This page describes modifications for the Cobra 148 GTL (PC-412) The PCB in this radio is almost identical to the Grant (PC-409) and the Madison (PC-411) and it can be used for comparisons. This page describes modifications for the Cobra 148 GTL (PC-412) The PCB in this radio is almost identical to. Variable RF power mod for Cobra 142 GTL. Respectfully as always, Rick | GIVE THE GIFT OF AMAZON PRIME | Turbo-T Wordwide & Qualified Posts: 1,343 Joined: Sunday, 23 March 2008, 23:23 PM. Kit comes with easy to follow text instructions, and color. The mixing is done at the mixer for SSB and at the Final on AM. Cobra 148 GTL mod confusion. Cobra 2000 BIG AUDIO!!! at silicon two one two dot org Today, we’re going to modify a Cobra 2000 GTL base station for BIG AUDIO. The 148/2000 has a carrier control trimpot already built in. Mk 2: MC145106) Frequency stability: 0. Cobra 148gtl & 2000 Super Mod. VR1 receive gain VR2 receive signal meter. it">Cobra 148 gtl swing mod. com">Cobra 148 gtl swing mod. this is the one most guys will put an external vr in the radio and run the wires to the spots the vr 10 came out of. If lower carrier is desired, change R196 near VR-10. I've sent you a pm, please get back with me and I'll try to help you. COBRA 148GTL (F) LED FREQUENCY DISPLAY*DISCONTINUED*FULLY TESTED BRIGHT & CLEAR $45. 2 earthquakes in the past 30 days. It lists a power modification for the Cobra 148 GTL that calls for changing the values of "R126 (10K)to a 2. This kit comes with installation instructions for the following radios ONLY: Cobra. I am looking for the mods on this radio for tweak and peak and 40 channels up and 40 channels down. Cobra 148GTL recommendations. COBRA 148-GTL CB RADIO. (This is the end of the solder side work. 00 shipping 148gtl With Extra chans Slider npc Mod $275. Their Sideband radios such as the 146, 148 gtl and 2000 were superb, they were stable and a radio you could be proud of. vr10 is the control for dead key.