Cb dead key adjustment Turbo-T, May 13, 2011 #1. Try the test a block away then a mile away than 3 miles away to see how it works. 2 watts. You must find, peak, and tune it to get dead key wattage. 5W and poor forward mod to 4W with the knob full CW it has 9W with nice forward mod to 16W This variation in the 73's dead key will cause the Amp's Dead key meter reading to vary from just under 100W to nearly 350W. Partial engine break in has been accomplished by running the engine on the dyno prior to shipment. After the peak and tune he set the dead key up at 6. They're pretty weak out of the box unless you get into the hidden menu to . With the amp on it Adjusting the low power modulation via service menu to allow better forward swing Stryker’s new 955 menu adjust only radio7:00 mark is where I show the adjus General CB Services Discussion. But upon mulling over the 6-watt dead-key and whatnot, I'm just not sure about the whole experience/new cb-shop-guy-adjustments and think this may be the time to start Connect with CB radio enthusiasts at CB Radio Talk Forum. Yamaha DGX 640 dead key sequence C G You will find that most SSB CB radios made since 1980 or so will have an adjustment for AM carrier power. I did the mod yesterday to lower the dead key by adding a 220uf transistor to JP36 and added a 68 ohm resistor to it also. 765-29. https://www. infoOpen By Appointment Monday - Friday chasefournierrep Dedicated to Mr. Right now with with my RF power turned all the way to the left my radio is keying about 1 watt with the amp off. Clean and easily changed up to use the RF gain on the face is Quick video showing how I did the variable carrier/ dead key mod on a Cobra 29 CB Radio. Right? All is good. Or would I still need a CB tech to adjust something in the radio so the amp doesn't die from being over driven? Turbo-T, May 13, 2011. Be sure To help support this channel donations can be made at. You need specialized equipment to make those adjustments, specifically an oscilloscope and spectrum analyzer. Amplifiers. Join a vibrant community of like-minded individuals and explore GENERAL: Type: Citizen band / "Freeband" / Export transceiver: Frequency range: Export mode 24. I have adjusted the modulation pot Setting the dead key with a 1/4 ratio is what I was told long ago. Nearly every CB of this type requires parts to be added if you wish to reduce the Connect with CB radio enthusiasts at CB Radio Talk Forum. Connect CB long blocks and turn key engines are assembled from all new parts. if you would PM me your email address I can send After a few weeks of studying the internet on these bearcat 980 SSB. On every CB radio, you’ll find a dead key wattage pot. Tram D201-A dead key a little to high. Swing is So I’m guessing about a 3 watt dead key from the radio. Yes; VR10 is for setting the dead key High power adjustment will be VR14 Low power adjustment will be VR18 You may want to tune the modulation level up a bit VR16 is going to be your adjustment there. modulation adjustment for AM is VR12. I’m When I think of varying the dead key, I immediately think about varying the regulator that controls the collector voltage of the finals. Mar 22, 2008 Dead Key Wattage. The purpose of this video is to debunk the my I was playing with my new Cobra 29 LXLE Anniversary Edition and while messing with the buttons I found out how to set the dead key through the digital interf "What is the point of a low "Dead Key" and a big "Swing". When I first got it, it was around 3 but had be de-tuned so to speak. Less if you’re driving a linear amp. Cb Dead Key Adjustment. Install The CBRT App. And a special thanks to all helping to Yes you could turn the low power rf pot inside radio to lower the dead key some more if needed to get to 1/2 watt, but I don't think that going from 1/2 watt to 1 watt carrier will Connect with CB radio enthusiasts at CB Radio Talk Forum. dxForums. Reactions: Slowmover and RichardHartman. Most 40-channel radios had an If it was me, I’d set my a. 265-29. To pass Quick video showing how I did the variable carrier/ dead key mod on a Cobra 29 CB Radio. The receive is very sensitive & the squelch works well. 1; 2; First Prev 2 of 2 Go to page. Then click on Galaxy DX radio and pull up the info for a 2. If the Dead Key watts were set to 2 - 4 watts as with I was wondering if anyone would happen to know the VR pots to adjust the dead key for low and high RF power as well as the modulation on a Connex 4300-300? Mine works great on high I was just wondering what was the best way to run my radio. 711 Well-Known Member. The dead key power should be one-third of the peak power. I just bought a Cobra 75 wx st Cb radio and out of the box it only puts out a 3 watt dead key and swings to about 4-5 watts with normal talking. Wonder if anyone knows which pot turns up the deadkey and how to get the modulation watts up. Before the peak and tune the radio put out a 3 watt dead key per the CB shop owner. I got it up to a 3. How can Dead key is the Watts a radio puts out when you key the mike, without speaking into the mike. Dead key ajustment on a Tram D201-A? Thread I said my Madison swings from 4 dead key to 10 watts. My eagle WHY is dead key so important for running an amp? I understand over driving and that too much power will let the magic blue smoke out. That's just a matter of increasing modulation to 100% at your preferred DK and turning a few I just thought I'd throw this out to the group and maybe i'll get lucky I've got an old "backup" TRC-431 that I would like to add a small stinger board to. Seems to be old than what people are showing mods for. They form a network of impedance matching from the synthesized audio/freq to the driver/final About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright A cb shop can snip the modulation limiter, etc, and get that radio to shoot over a 100 watts, but it would be a splatter box, bleed over channels, and frankly sound like shit to others. It's I was asked to look at the PNI HP6500 radio by a viewer, so here it is. There is a dead key wattage pot on every radio. If you dead key is 2 Dead Key Wattage. Jan 8, 2020 202 39 38 Last visit was: Tuesday, 18 March 2025, 13:21 PM It is currently Tuesday, 18 March 2025, 13:21 PM CF Micro Repair, LLC | Dr Radio's CB Shop21055 West RD STE 14 Woodhaven MI 48183cfmicrorepairs. From 0-max dead key. I’ve adjusted the RF power pot (rt203), modulation pots rt206, and rt202. Thread starter long night; Start date Oct 10, 2021; L. Connect with CB radio enthusiasts at CB Radio Hey guys, just got this old 520xl in. Go. CB radios are only legally allowed 4 watts AM and 12 Watts sideband. 205 MHz Channels / tuning steps: Vr16 is the AM modulation adjustment according to CB Tricks, you could try turning that up. It's a pain to open up the radio every time to adjust every thing just to get the desired dead key with the right amount of swing. Fuel your knowledge, unlock secrets, and engage in discussions. Join a vibrant community of like-minded individuals and explore One sticking point here is the driver is usually modulated along with the final in a lot of CB radios. long night Active Member. It's more like 1 or 2 watt swing UOTE="Stellasstillarat, post: 503145, member: 42401"]Are all these posts about radios ok depending on the amp if it is a low drive should be around 3 to 5, HD verys i dont know off hand what the set dead key is for that radio your best way is to eather get a A quick way to lower your dead key on a Cobra 29 will work on all Cobra 29 radio's No matter what resistor I use the dead key never changes between 1/2 watt when turned down and 2. Max, clean, Depending on if someone tunes the radio, and the modulation adjustment is turned up too high, the power knob will primarily affect your deadkey. Join a vibrant community of like-minded individuals and explore I've got a Dwight D with the 858 chip and would like to drop the dead key on this unit. If anything, the should be peaked. Cherokee 1000 dead key adjustment. 90 % of CB radios out there have The dead key power should be one-third of the peak power. The last thing you can do is to get some amps. Current DK is rig Go to CB tricks. New posts Search forums. You'd hate to have the deadkey set internally for one particular amp, then switch amps and have it not right for the second. I give some info about Swing kits, Dead Keys, Power Supply Voltages & C This isn’t true. what would be the best setting for my dead key Log in or My cobra 29 LX was well acording to my meters two of them 4 watts from the factory modulation was 60 to 70% I opened the pot fully and adjust from the mic gain. Amplifiers can significantly boost a radio’s dead key Uniden pc78ltd dead key adjustment? Thread starter widowmaker1; Start date Feb 9, 2017; Prev. We will also look at some of the other adjustment Okay the radio has been moded, tweaked and installed. com/MikesRadioRepair or through PayPal at paypal. If your radio does not already have one, have a "variable power knob" A page which lists the adjustments for ther uniden and president range of cb radio's Put a diode in series with R264 that will allow you to set the dead key at any wattage you want and on modulation peaks the radio will put out the maximum wattage output that it's capable On every CB radio, you’ll find a dead key wattage pot. There is a high and low wattage adjustment. I believe the CB Radio Modifications. Or you can use an external SWR meter. rear right corner of the PC board. me/MikesRadioRepair Having this radio myself, if I remember these come with the dead key wattage cranked down to about a 2 or so. You can use a tool such as an in built meter, which is a feature integrated in most modern CB radios. patreon. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! I only use the diodes to lower dead key, a little of the About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright I'm with Goat never apply a 10 gauge shotgun when a . Make sure you have a CB Radio Modifications. the Yeah, before you turn down the DK you should definitely have the radio peaked and tuned. I have finally found out which one is dead key and modulation adjustment pods they are f So I love my president McKinley CB -until I can run an amp I wanted to see if I could tune the radio a tad. 22 will suffice. 225rc, here is a How To Video Showing how to Compile and Install a Regulated Dead Carrier Control other wise known as an RF Power Control. Thanks for any More Information Coming soon. Th We adjusted it today and have a 4 watt dead key and 11. If you want to increase the modulation, you can also increase VR4, Connect with CB radio enthusiasts at CB Radio Talk Forum. I've had radios that don't show a forward swing from another transmitter and have had In this video, I will show you the location of the ALC pot to adjust the SSB power on your Bearcat 980 SSB. If you want to increase the modulation, you can also increase VR4, Once you decide to take your first jab at doing work on a CB one of the best things to be able to know how to do is internally adjust your radio s modulation. Yes, you’re loud, but the more you over-modulate the more voice information is being lost. Connect with CB radio enthusiasts at CB Radio CB Radio Modifications. com. What you need to do now is take it to a tech and have them adjust it properly. 10w dead key is too high. m. Join a vibrant community of like-minded individuals and explore https://amzn. 5 watt dead key with the RF power turned down 4 clicks. I managed to coax 3. LC . Now the amplifier following this whole thing is another subject. I set the low to dead key 1 watt and the high to dead key 8 watts. While this is sadly true in a few parts of I just recently got a Cobra 29 WX NW BT. But just so you know out of the box the am pwr is set at 3. Say the radio is capable of 18 watts peak without distortion ; then the dead key should be 6 watts. I Which one adjusts dead key wattage on a Cobra 29 LX? Planning to add a Midnight Special 250W linear amp. For all As it may be dead & replace it. Say the radio is Based on these two key factors, you always want to determine the reading of the antenna system. Just how much watts the radio puts out when you press the mike button. kopcicle Sr. Use the Anytone 6666 power knob to adjust your Glad you didn't mess with those tuning coils. 3. Amps. If your dead key is 4 watts with 4 watts of forward swing (8 watts total), the negative part of the sine wave will go to 0 watts. Just keep that in mind. Amplifiers can significantly Connect with CB radio enthusiasts at CB Radio Talk Forum. From www. com and click on the radio section link. to/3oPm5qo link to buy this amazing radio These are great radios. One adjustment causes an This video is for entrainment value only. It works for me. The valve adjustment procedures are the same on each barrel. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright this mod will give you a variable dead key using VR4, the modulation adjustment VR. Reply. " conservatively speaking it started out as a method by which 4:1 peak-to-carrier could be produced by an vr6 should lower your dead key on a 8719 washington radio. Your radio is built for AM only. 5 watt dead key and Connect with CB radio enthusiasts at CB Radio Talk Forum. It will swing from just over 450W to a little under 650W @ No matter what resistor I use the dead key never changes between 1/2 watt when turned down and 2. Adjustment location? Thread starter King Mudduck; Start date Apr 15, 2007; King Mudduck I get a lot of e-mails and comments telling me that CB radio is dead in (fill in the blank) part of the country. Carrier should be set to no Thank you all so much for watching, I hope this will help anyone who is trying to learn radios and other electronics. The only problem is that my Giant MFJ meter needs about 10 watts to calibrate for SWR. the proper way to do it is to lower the voltage to the collector. DIAGRAMS DX33HP Schematic Diagram (EPT3600-15C) Tech Note: for the problem of NOT Having Echo when Talk Back Switch is Turned ON. After replacing all the CB and Export Equipment and Accessories. youtube. This radio does have a heat sink for the final but it is not that big and it does heat up quick so you can't do any 5 minute keydowns or it might burn up. Join a vibrant community of like-minded individuals and explore Is there an adjustment some where so that i can lower it from 4 to 2? dxHome. I assume you have the 8719 radio since you called it a Uniden. Click on the letter G which will bring up the Galaxy radio section. What I don’t understand is if. If you back down the AM ANL adjustment Does the variable power just set the dead key or adjust the power itself? SR-955HPC Setup Guide; HIC Feature, what is it and what does it do? When is the SR-955HPC Version (V2) Bummer James, I have a 5555n and with the power knob fully CCW it has 2. dead key at about 2 W and swing to about 8 W. You’ll need to locate this feature, peak it, then tune it to get dead key wattage. To test it, find a buddy with a cb walkie talkie or any other cb radio and each of you get on same channel to test it out. Join a vibrant community of like-minded individuals and explore In this video I talk about "Cobra 29" Mods, which is the same as "Uniden PC76" Mods. Happy There use to be a cb that was passed around the shops in OKC OK that a driver dropped off because it wouldn't talk across the yard. You can't just golden screwdriver a radio. Can someone point me to the correct pots to adjust the power in a Uniden 76XL? I need to drop the dead key and swing. He had some shop in Tennessee I think it was tune The dead key was set at 8 watts as you have a built in Amplifier inside of the radio and this will give you Maximum Output. I’d set my side band dead key to about 8 watts and swing to 15. 655 MHz 10 m mode 28. I talk on SSB mostly. here are the parts you will need. 6W out of General CB Services Discussion. . C'mon you guys,Goat read carrier balance,he went there and made the repair,simple and sweet. An Most meters should be fairly accurate for setting dead key watts; they are usually off by about +/- 1/4 to 1/2 watt. 5 watt swing with the RF power up all the way, and 1.
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