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Cobra 148 gtl adjustment points?
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Cobra 148 gtl adjustment points?
Radio Stations Cobra-electronics Cobra 148 GTL user manual pdf download free [0 Related for Cobra 148 gtl manual de servicio Ford 1300 tractor service manual Issuu converts static files into: digital portfolios, online yearbooks, online catalogs. Cobra's iconic 148 GTL took a slight redesign in the phase-locked loop system back in 2008 utilizing a Chinese produced chip. Receiving COBRA coverage can be a fairly s. Ham radio, amateur radio, two way radio, cb radio, walkie talkie service manuals and reapir information. Once modded many people will see these radios swinging 15-18 watts on AM and 20 watts on SSB. That is funny, I get people giving me Cobra 148's to convert from 27 to 26MHz, it almost seems a waste to convert one back ! Cobra 146 GTL (By Dynascan) SPECIFICATIONS Cobra Electronics 148 GTL operating instructions. The COBRA 148GTL will operate into an SWR of 2 to 1 indefinitely and sustain an SWR of 20:1 for a maximum of 5 minutes at rated operating conditions. How to adjust the talk-back volume. Quartz is a guide to the new global economy for people in business who are excited by change. The 4-pin front panel mic connector allows the 148 GTL ST to be installed. I need help with a hacked Cobra 148 GTL I just bought. UGLY_BOB wrote: Both operate on Low - Mid - and High bands515 to 29965 to 27415 to 27) in AM, FM, SSB USB & LSB and Carrier Wave (CW. Re: Cobra 148 GTL DX fine control problem. 655mhz (in 12 blocks of 40 Channels) Modes: FM, AM, USB, LSB Ability to work Zero's: YES. We are working every day to make sure our community is the best Radio Hobbyist's site The Superstar 3900 is the modern version of the "old" classic Cobra 148 GTL-DX, also known as the Superstar 360FM. 00 £ | Cobra 148gtl radio: 179 Jul 1, 2020 Pretty sure that's the AM modulator transistors. The reason the older radios are selling for so much is because they are better radios and people want them. In this case, Cobra is simply playing off of the 148's reputation of dependability. Press the PTT (Push-to-Talk). 26-TM-360 Old 80's Radios and lots of them - Vintage. Cobra 148 Gtl. Adding to this small footprint is a front facing microphone jack As for a tune up on this radio I merely adjusted the modulation (see video for adjustment points), set the high and low. May 22, 2016 #1 Hello, could someone tell me where the lsb tx frequency adjustment point is located. The conventional package is more reasonable though is still several hundred dollars. ? Here is a neat little mod for the 148, 142, & Cobra 2000 GTL. On AM this radio will deadkey around 4 watts and swing upwards to 8 -10 watts (this is with the limiter intact and no mods). Thread starter spudgun; Start date Dec 30, 2010; Status Not open for further replies spudgun Member. Also showing the transmitter output on a spectrum analyzer. May 5, 2023 · This video will help others understand how to align a radio correctly. Este documento descreve as novas funções e modos de operação de um rádio Cobra 148 GTL após ter sido modificado com um kit DDS Versão 2. Quartz is a guide to the new global economy for people in business who are excited by change. Assuming its a standard unmodified radio, switch it to ch12 on Hi-band and mode set to usb and make sure the Fine and Course are in the 12 o clock position. Values below 1k would be inadvisable. Expansion Page Go To the Connex Deerhunter Mods Page Go To the Cybernet UK 27/81 Mods Page The phase detector may control a VCO and yields a high level signal when input frequency is low, and a low level signal when input frequency is high. Looks like an eq board. by RD250 » 18 May 2012, 20:23. 4 Watts AM, 12 Watts SSB. The Cobra 29 needed the output section retuned to work properly with the mosfet conversion. Jul 3, 2016 · Hi all, a simple question I think: I receive a Cobra 2000GTL and I need to adjust the frequency. The following will unlock and keep the standard clarifier range: Remove D58. Travel is still down significantly from pre-pandemic highs, and without some more help from the airlines, elite ranks will be thinned. Schematic Diagram (Page 4 / 5) Schematic Diagram (Page 4 / 5) Chassis Wiring Diagram (Page 6 / 7) Main PCB Layout Top (Page 14 / 15) Main PCB Copper Layout (Page 16 / 17) Late Version (PB010) MC145106. New radio, cobra 148gtlSNAKE MODS:-Studio audio-wide narrow filter-frequency counter-frequency alignment-peak and tune-variable power-cap upgrade-rx/tx upgra. Parents especially have had to make major adjustments, as most have gone from working commuters to Adjusting to parenthood takes time and patience because of the plethora of changes. Just fitted a CPI base mic to my Cobra 2000 GTL for ease of use. It basically is a Cobra 148 with the Frequency Counter and some push buttons instead of the standard switches. On AM this radio will deadkey around 4 watts and swing upwards to 8 -10 watts (this is with the limiter intact and no mods). Devido antigamente os antigos PX não variar a frequência de transmissão conforme recepção se adotou a técnica apelidada de "Quebra queixo" a fim de que a sin. to/2SFR0Tzhttp://wwwcomVideo overview of the Cobra 148 GTL AM & SSB CB radio with discussion on tuning. It consists of 8 pages detailing test conditions and equipment setup, as well as 11 steps for main alignment of the VCO and carrier, 7 steps for receiver alignment, and 11 steps for transmitter alignment. The new Cobra 148 will cost more than a refurbed 959. These radios match up very well with a solid desk mike. Great deals on Cobra 148. 3 Dec 27, 2014 I have three questions for some of you knowledgeable chaps out there. Cobra 148 GTL - Little or no out put power !!!! Thread starter ke5etn; Start date May 6, 2015; Status Not open for further replies ke5etn Member. 0 Receiver Alignment in the manual). An adjustment disorder is a short-term condition that happens when you have trouble coping with stressful life changes Adjustment disorder is a group of symptom. If R1 is 68 ohm, will give a Carrier of about one and a half Watt Dead Key and an Audio Swing of about 12-14 Watts PEP. I have heard conflicting modification procedures for the modulation for the They say to cut R131. Thanks for the job dom!!I hope you enjoy this beast for many years too come!!!577 CB Radio Cobra 148 GTL 40 Channel Solid State Citizens Band Ssb / A 2. Slight modulation adjustment is all you need Find many great new & used options and get the best deals for Vintage Cobra 148 GTL SSB CB Radio With Channel Mods at the best online prices at eBay! Free shipping for many products! cobra_148_gtl_dx_sm_pg33_34. I also re-capped to to make sure that was not an issue, however, all caps removed were right on tolerance. Good luck, Respectfully. I have a Texas Ranger TR-296GK, basically a Cobra 148GTL, with low TX power in all modes. You need to find out if it is an. There is no transmit however. Lots of businesses use techniques like SEO and social media marketing. I was too lazy to go through that one and order caps. + algumas dicas de experienci. As a rule, this allows a useful "fine" tuning range. PA Capability Use CB radio as a Public Address System with PA speaker. ] There's ways around this of course, but TR24 being removed or R131, is the down and dirty way, except removing TR24 is inherently affecting both modes and is a lot dirtier in results. ] There's ways around this of course, but TR24 being removed or R131, is the down and dirty way, except removing TR24 is inherently affecting both modes and is a lot dirtier in results. by andymuza » 28 Nov 2015, 17:05. My recently purchased Cobra 148 gtl dx Mk2 PB-010 AB Board, has what appears to be a Vco locking problem, it's epromed triple low to uk fm on a six position band switch, Low & Mid bands seem fine, Hi band from channel 17 seems to take awhile to lock when you key the Mic. Hi all, a simple question I think: I receive a Cobra 2000GTL and I need to adjust the frequency. Post by Rick » Saturday 19th Apr 2008, 10:40 As for bad SSB TX audio, check the chassis screws also check the final and driver bias, C150 can cause some odd problems in this area. All you need is a simple resistor added to the bottom of the board, near the Ext and Pa speaker jacks. Page 9 Section IV Operation (Continued) SWR CAL CONTROL. brown boots men I need help with a hacked Cobra 148 GTL I just bought. There’s a lot to be optimistic a. I did the installation of the frequency meter according to the scheme, I did not use any capacitor in the VCO cable, I did some capacitor tests of 47pf / 39pf / 68pf / 100pf / and all above channel 80 showed the wrong frequency, at 78. Early Version (PC879) MB8719. Jacks: 4-pin front mic. At this point you should have 180~200% positive peaks with no flat topping and put a 1N4148 diode and a 500 ohm pot in series in place of the 1. Cobra 2000 GTL_Manual Manual Cobra 2000 GTL, Connect a watt meter, frequency counter and dummy load to the radio. The Cobra 2000 GTL uses a dual conversion receiver. But this 148 GTL after alignment, receive mod, and clarifier unlock has become a very satisfactory radio. Oct 14, 2012 · Hello, I am wanting to adjust my deadkey on my Cobra 148 and my Uniden Grant XL. I saw it had a hole in the side of the My brother has a mk1 cobra 148 gtl dx and has asked me to do the channel expansion mod for him. 4 Watts AM, 12 Watts SSB. Discontinued Citizens Band Radios : Copyright 2004-2014, Universal Radio, Inc. The Cobra 148 GTL CB radio has twelve watts power SSB RF output, which increases. Re: Cobra 148 gtl dx SS 360 FM Mk2 no TX power by ch25 » 04 Jun 2018, 19:29 Measure current, should be tp7-8 50mA and 7-9 80mA USB, no modulation. im looking to recap this radio as well lots of caps do not match the values on cb tricks thanks. harley breakout fork oil capacity The CB/PA, tone hi/low, and brt/dim switches have been disconnected. But they don’t all use them in the same way. 148GTL-DX two-way radio pdf manual download. This manual shows that this unit had a freq counter plug on the back side of the unit. Go To the Cobra 148 GTL DX Mods Page Go To the Cobra 148F GTL DX+ Mods Page Go To the Cobra 150 GTL Mods Page Go To the Cobra Audio Modification And Tuning List Go To the Comanche Warrior Freq. 73s a todos! Group created only for Radios Cobra. This kit covers the initial Taiwan and later Philippines, 5 pin side microphone units built from 1980 to 1995. When receiving the S-meter reads way high like someone adjusted it to get a full peg when anyone is 5 miles or closer. Radio looks to be in good condition but is untested and sold as is What you see is what you get Cobra 148 GTL-DX Mk 11 (SIMONTEC VERSION) Sirio Gainmaster RM KL-400 Mobile Shack Magnum S9 Zetagi B750 Sirio Gainmaster/Sirio 827/Imax 2000 depending how I feel RD250 Top Poster Posts: 1073 Joined: 04 Dec 2010, 14:06. Radio Cobra 18 RV Service Manual. Re: A few Cobra 148 GTL-DX pic's by Otter » 07 Jul 2021, 19:50 cb4ever104 wrote: ↑ 07 Jul 2021, 18:41 It would be too much work to rip it all out , so my advice would be just to leave it as is. L2, 9C1Driver and rabbiporkchop. Radio: Cobra 25 NW, 148 GTL. Hi Everyone, I have a Cobra 142 that was gifted me by a good friend who picked it up off eBay. stella cardo You can buy points or you can get point for every manual you upload. At least, the 148 GTL non-NW/ST version has proven to be quite stable. The radio out-of-the-box is acceptable, performance is a bit low but with a few tweaks to make it a relatively good, loud CB radio. Follow the wire (white or green) from R44, remove the other end from the PC board, and connect it to constant +8 volts (IC4 pin 3). Stretching the clarifier's range by changing resistors will also cause this. This is a nice clean 40 channel SSB/AM side-mic Malaysian (the good one) radio. comnome Clebiomercado pagoDeus abençoe sua. Opens in a new window or tab $20 Buy It Now +$5 Free returns derosnopS. Maybe I should quit buying these things at yard sales I put it on the bench and fired it up Key the mic and found RX/TX light functioning. I'm aware of the low "S" meter reading and the info about FM tx audio being poor but this is a little different. Power On/Off and Volume Control: This control is located on the inner part of the concentric knob. However, following installation of the SC106, I am unable to get the UK band channels to centre in the middle of the coarse tune with the 5K trimmer pot supplied with the SC106 kit. Date: Date: Date: Tuesday, Tuesday, Tuesday, March March March 11, 11, 11, 2008 2008 2008 Rev Rev Rev 15 1. Jan 11, 2022 I've got one of the newer Chinese made Cobra 148 GTLs with the front facing microphone plug. COBRA 148 GTL- knobs and switches (20239) 99 Seller's other items Messages Location Mar 13, 2022 I have an older Cobra 148 GTL. What is the point in buying this radio for the SSB function if it cannot measure up to the rest in its peer group of similar radios? Fix it please, Cobra00 of the right materials where it counts the most. My grandfather left me a nicely modified one when he died in 1978I'm guessing it was at least several years old by then, so likely one of the first built. 3 on the built in SWR meter and then falls back to 1. Change C146 to a 1uF non-polarized electrolytic.
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Opens in a new window or tab. Cobra 2000GTL Pdf User Manuals. I will not be commanded, I will not be controlled. I picked up a Cobra 146 GTL (I had owned one about 5 years ago and remembered it performing very well) for a song and dance and threw it in the mobile. On AM this radio will deadkey around 4 watts and swing upwards to 8 -10 watts (this is with the limiter intact and no mods). The FCC approved SSB CB radio market in the U has been small for quite a long time (Galaxy DX 949, Galaxy DX 959, Galaxy DX 979, Galaxy DX 2547, Cobra 148 GTL) so the introduction of a new option for consumers is good news for the CB radio community. On some of the newer radios the final bias can't be set higher than about 50 mA. It is easy to unlock the units 858 Phase lock loop chip and to modify the clarifier to slide 1 khz up and about 5 khz down. Pre-Owned · Cobra Set the S/RF switch to the CAL position. Schematic Diagram (8. Remove the AM/Regulator feed wire for the final from TP-7 and solder it to. the Cathode of D-55. Speaking to people in foreign lands, with various configurations of copper wire in various strange. RMS will be one and a half Watt Dead Key to about 5 Watts RMS! View online or download Cobra 148GTL-DX Instruction Manual Maintenance and Adjustment 10 Code. 490 on channel 19 Mid band in AM or FM in RX mode Cobra 148 GTL-DX Frequency Problem. 40 AM, 40 Upper Side Band, 40 Lower Side Band. From a member here that sold it to me for shipping cost, which I really appreciate. martinsville speedway camping Lots of businesses use techniques like SEO and social media mark. Radio Stations Cobra-electronics Cobra 148 GTL user manual pdf download free [0 Related for Cobra 148 gtl manual de servicio Ford 1300 tractor service manual Issuu converts static files into: digital portfolios, online yearbooks, online catalogs. so for channel 19 UK40 you need to be on channel 33 channel 40 on the cobra will be channel 26, thats all you get 1 to 26 but you need the coarse around 1/4 to to be. The Consolidated Omnibus Budget Reconciliation Act (COBRA) is a federal. Location Dec 20, 2012 rthurstenson said: I recently bought a new Magnum UTB-1 variable talkback board for my older Cobra 148-GTL side-mic radio. I did some more homework last night on this little project. + algumas dicas de experienci. I want to repair this area, does anyone have a photo of this area I could use to help me, or any advice. Apr 10, 2014 · Hello guys by any chance does someone have a Cobra 142 gtl Alignment procedure info?I have all the equipment such as a scope ect. doc Author: User Created Date: 5/25/2006 5:22:00 AM. Definitely one of the most popular SSB CB Mobile Radios. The CB/PA, tone hi/low, and brt/dim switches have been disconnected. From a member here that sold it to me for shipping cost, which I really appreciate. realistically all you need is 4 bands on the mk2 or five if you want to cover uk40. apartments for rent craiglist When I turn on the radio, nothing is heard through the speaker, audio sometime comes after 15-20 minutes of turning on the radio, but not always. Earn up to 5x points when you use your eBay Mastercard®. Many workers unfortunate enough to get the ax in this recession at least had one thing working in their favor: subsidized health insurance. that the antenna can be lightly tapped with your finger for easy adjustment Set your COBRA 148GTL to Channel 21. Sep 10, 2011 474 64 38. 148GTL-DX radio pdf manual download. This is the side mic (not included) 5 pin, model. Mar 27, 2002 · Cobra 148 GTL Power Tweek and Modulation 1) Change R126 to a 2 2) Change R124 to a 4 3) Remove TR24 4) Re-tune L37 and L38 for maximum forward AM power. When the lowest point has been reached, switch to Channel 1 and then to. Maybe moreso; as it is far more stable on SSB than a Galaxy 959 or a Ranger TR-696 Freedom 1. USB would still be below the correct frequency with the adjustment set as high as it goes. Aug 12, 2007 · On those models, completely unsolder the wire at the end opposite the test point connector and solder it to D55. Dec 18, 2008 · Set the driver bias to 50 mA. VR2 is the SSB/CW S VR8 is the RF Meter. vhs opening We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. If the headlights on your Chevy Trailblazer are out of alignment, you will find it difficult (or impossible, depending on how badly out of alignment they are) to see at night or wh. The bias shorting plate on the DX allows you to measure the bias current of the driver and final transistor. Factory Service Manual. Radio looks to be in good condition but is untested and sold as is What you see is what you get Cobra 148 GTL-DX Mk 11 (SIMONTEC VERSION) Sirio Gainmaster RM KL-400 Mobile Shack Magnum S9 Zetagi B750 Sirio Gainmaster/Sirio 827/Imax 2000 depending how I feel RD250 Top Poster Posts: 1073 Joined: 04 Dec 2010, 14:06. We are working every day to make sure our community is the best Radio Hobbyist's site The Superstar 3900 is the modern version of the "old" classic Cobra 148 GTL-DX, also known as the Superstar 360FM. Do not remove any transistors as it looks shoddy! (personal opinion) 11 #1. When you lose your job, the last thing you need to worry about is losing valuable health insurance coverage. Thanks, Russ noblesville, indiana sonoma Sr. Someone who wanted to help you repair your equipment put together this information. to/3yzKboZCobra 148 NW GT CB Radio Peak and TuneMy A. 5 PCB Number PCB PCB Number PC Number PC - PC - - 412 412 412.
Remove injected audio, Adjust for 6W carrier, a lower power level may be required to attain full modulation AM Modulation. View and Download Cobra 2000GTL user manual online. In the mid - late 90's Truck King were selling "clean-up kits" for around £30. Eldorado828; Jan 9, 2022; Replies 13 Views 4K. The receive is great, as all 148's. 3258MHz in them "You really just need 28500 for voice, the lower part of the band is CW4758MHz to get the high band, or a 11. Includes 10 business days handling time after receipt of cleared payment. lily grove baptist church THE FOLLOWING IS A (NO-NO) AND IS FOR YOUR INFORMATION ONLY. TWA Convair 880 ((8 I just installed a Cobra 148 GTL that I bought used in my truck. For the most part, the parking brakes on your vehicle will not require adjustment, as most parking brake systems come equipped with a self-adjusting mechanism. Echo mod: R550, NOT R39 as previously posted, controls the delay of the cho (speed of the echo). ferrell duncan allergy Lots of businesses use techniques like SEO and social media mark. Cobra 148 Gtl Mobile Cb Radio. Fixed and aligned a Cobra 148F GTL once before. by Rick » Saturday 19th Apr 2008, 10:40 As for bad SSB TX audio, check the chassis screws also check the final and driver bias, C150 can cause some odd problems in this area Aug 11, 2005 587 419 173 Sunny Salem, VA robcocx Feb 28, 2019 #14 148 GTL side-mic uses 5 pin mic receptacle. nutone bathroom fans A potentiometer has been installed to drop it down to 1. You are hooked up to the bias adjustment if you have the jumpers pulled. Would only cost me a stamp to send as I`m in Scotland Legend About this item 5-foot 16 gauge RED positive, & BLACK negative wire; fuseholder is near radio end so cord can be shortened to 18 inches without losing fuse includes inline fuse-holder with 4 Amp AGC = 3AG fuse fits Cobra 148-GTL, 148F-GTL Single Side Band CB radios fits obsolete Cobra SSB CB radios: 138XLR, 139XLR, 140GTL, 142GTL, 146GTL fits Courier Galaxy, Galaxy IV, Galaxy V, Galaxy VI. I went & got a radio check and now when I key up my radio transmits a. 9550 on 36 going down. The Cobra 148 NW ST is known for its reliable performance and clarity in receiving and transmitting signals.
These radios can be c. On AM this radio will deadkey around 4 watts and swing upwards to 8 -10 watts (this is with the limiter intact and no mods). to/2SFR0Tzhttp://wwwcomVideo overview of the Cobra 148 GTL AM & SSB CB radio with discussion on tuning. 00 I am getting an unbelievable 500 watts on high setting on am dead key. as far as using it as a cb i would rather have a 148 gtl as its reciever is far superior. im looking to recap this radio as well lots of caps do not match the values on cb tricks thanks. If lower carrier is desired, change R196 near VR-10 2. In the box: 200 GTL DX radio, microphone, user's manual. This is a frankinsteind radio. Advertisement When a child enters your lif. Modifications Cobra Modification And Tuning List. turning the carrier down should make it easier for the radio to hit 100% mod. They are the side mic models. you say your 2000 is not modded and the AMC is intact. The following will unlock and keep the standard clarifier range: Remove D58. The 148 needed a recap, tune and alignment. Very easy on the ears. This data is all over the net, and the only thing that is correct is item #3 below and it too is not necessary if you change the "stock varactor" to an ECG 612, in most radios that this mod applies to, Cobra 148 GTL, Cobra 142 GTL, President Washington (MB8719) ect. 5) Adjust VR10 for maximum PEP on AM. cute bts photoshoot Dec 18, 2008 · Cobra 148 GTL with CR-577 mic The Legend. The conventional package is more reasonable though is still several hundred dollars. There are other things you can do and although these mods will increase swing, the audio won't change 10. Doing this will not affect your FM/AM output power Cobra 148 GTL-DX newbie help. Mar 27, 2002 · Cobra 148 GTL Power Tweek and Modulation 1) Change R126 to a 2 2) Change R124 to a 4 3) Remove TR24 4) Re-tune L37 and L38 for maximum forward AM power. UGLY_BOB wrote: Both operate on Low - Mid - and High bands515 to 29965 to 27415 to 27) in AM, FM, SSB USB & LSB and Carrier Wave (CW. for example, if your radio went from 26085 mhz, you would notice that while channel 19 (27. Does anyone Know if the new made in China GTL 148 adjustments are in the same place as the older 4 prong front mic jack GTL 148s? I know the side jack ones are different but im not sure about the front jack models. Cortland Street Chicago, IL 60707 PRINTED IN THAILAND ©COBRA ELECTRONICS CORPORATION 1997 480-241-P-001. Adjustable Dynamike Boost Dynamically boosts microphone for increased voice clarity. Rather, it is an acronym for federal legislation called Consolidated Omnibus Budget Reconciliation Act With the 100% subsidies expiring in October, now is probably the time to find a cheaper Obamacare plan. 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 handy andy there was a post where I ask about if any adjustment on a cobra 2000 gtl &148 gtl side mic for internal SWR calibration, I can't locate it meaning when on a dummy load and set the radio to see SWR instead of 11 they both are showing 14 you reference out to 2 resistors. The Cobra 148 GTL CB radio has twelve watts power SSB RF output, which increases the SSB range. Dimensions - 7-7/8" W x 9-1/4" D x 2-3/8" H. Adjustable Dynamike Boost Dynamically boosts. 4 except the test point is test point 7, and the adjustment is VR8). 99 Description: **40 AM & 80 SSB channels **4W AM & 12W SSB **RF gain adjusts receive gain in weak & strong signal areas **Switchable ANL/NB for increased noise reduction **Adjustable Dynamic Boost dynamically boosts microphone for increased voice clarity **SWR calibration of antenna system for maximum performance **9-ft microphone cord. Posted on Thursday, January 07, 2010 - 7:46 pm: i have a cobra 148 and there is no recive audio, i tested the speaker and ext speaker jack, both works fine. used charger rt What is the point in buying this radio for the SSB function if it cannot measure up to the rest in its peer group of similar radios? Fix it please, Cobra00 of the right materials where it counts the most. Apr 28, 2010 · Re: Cobra 148 gtl-dx adjustments. I need another radio like I need a hole in the head, but I put it on the air for the heck of it and found that it's off frequency by about 200hz (which apparently. The Grant XL is the same radio as the Philippine made Cobra 148. Stretching the clarifier's range by changing resistors will also cause this. With its built-in microphone and speaker, it provides convenient hands-free communication. Just working on one of my ebay parts radios that has been more or less fixed. "super-mod" for it, which I think he said would make it carry 12 watts and. You don't need super tunes on these radio because they are superb performers already. Posted on Friday, May 27, 2005 - 10:23 pm: I have acquired a cobra 142 and the recieve ( ears ) is weak. 134221938-Cobra-148-Gtl-Pc-412 (2) - Free download as PDF File (. 01, permitindo operar em modo de canal ou banda corrida entre 26860MHz. The correct method is to move the supply to the clarifier pot to a fixed 8v supply and snip/ remove the diode beside the tx adjustment vr, some screwdriver modded yours incorrectly, The purpose is that your radio always transmits on the same frequrncy as it receives which. Cobra 148 GTL 148 GTL 148 GTL radio pdf manual download. The original information pertains more to the Cobra 148 GTL than the 2000. This data is all over the net, and the only thing that is correct is item #3 below and it too is not necessary if you change the "stock varactor" to an ECG 612, in most radios that this mod applies to, Cobra 148 GTL, Cobra 142 GTL, President Washington (MB8719) ect.