october 28 2022 / althoug you may not see this Mike, but a buddy of mine, who knows you, assured me you were doing just fine and having a good time. I ws glad to hear this , andthankful for all your videos you have made these past years. many of us, truly enjoy them and learn a lot. Maine 307 - 73s
You are exactly correct about the Cobra 2000, they need very few mods done to them. They was a great preforming radio from the factory. The only mods I would want done to one is an Expo channel kit, maybe open the clarifer and a little tweaking on the ALC and put the cover back on it !
I rarely miss clips, but this one got by me. Great rig, excellent job. My equipment thanks you (Mike.) If not for you my rigs, and other assorted equipment would be unusable. Keep saving our equipment from the closet, or worse the scrap heap.
I had two 1980’s 2000’s, my wife’s had added channels, minor peak and tweak with a nice swing and super clean tune with D-104 Desk mic. Mine was similar but had a power output matched perfectly with my Golden Eagle 750 Tube amp also with a D-104 Desk mic. It had a much bigger swing for sub. Just bought a 2000 after 30 years and want to send it to Mike for caps, clean and tune. It will need to be matched to a single tube 50 watt preamp feeding my 600watt sweep tube amp.
I remember when these radios hit the seen, everybody wanted them! I was quite happy with my HR2510 for a mobile and my SBE Console II for base....I have been inactive for 18(?) years, but I still have my radios....just incase! :)
I can't decide if I should keep this 2000 bone stock or put in a Mike/Mark frequency board (with scan!). I keep going back and forth on the issue. At the moment I am in the yes mode. 350 channels is one hell of a range.
Bill Good also DR Bill he rewire the power supply to get more out of it if you ever see a cobra 2000 GTL the power supply be up graded mite ne one of his Radio from his tech bench
It would be interesting to see that! To see the before and after from popular mod's. I know what they sound like on air but have never seen them on a scope, spectrum analyzer and sinad meter. The schochty diode mod on the receive and NB is of particular interest to me due to my use of an old President Lincoln from the 1990's. The receive is ok little bit noisy with white noise but the NB is terrible and ANL are average at best and an improvement would be great!
You brought up the subject of burning up the transformer - with the heavy wire that they are wound with can they actually be destroyed. I have a power supply the wiring on both sides is burned up. Someone tried to repair it but failed. I removed all the attached wiring and just have the main hard-wound wiring and it still works. I used a 3 amp fused line to test one side blows the fuse - the other side produces 16.8 volts so now I know how it is wired. The circuit boards are fried - so I do not know if lightning hit the radio or what happened.
Question to you Sr, After you Restore a radio (CB, export, or Full Ham) do you have them up for sale? That is if there not being restored for someone. Was just curious. 🤔 And by the way, love your videos! Enjoy the Detail that you go into on the radios. 👍🏻
one great radio. I gave mine to a buddy of mine. I told him that I wanted it back if he went to get rid of it. I ask him about it one day. he told me that it had got stolen.my buddy is in heaven now. but I will always wonder if it got stolen from him.
Hello mike hope you are well on the cobra 2000 gtl is the recieve really sensitive or is low recieve a sign of bad caps thanks and come back soon please
I wish I could find someone with an absolute stock Cobra 2000 GTL I could look at and take pictures of. I'm not the best at reading schematics, but trying to find out where the brown wire from the voicelock knob goes to. I'm also looking to take mods out of this radio to make it stock again.
As good as these radios receive - I did not know that the schottky Diodes would do anything for the radio,size spacing on a lot of radios restricts using larger caps in them.
i agree with you here no need to hot rob these radios. or even do them hillbilly extras channel's' i have one that had been modded extras hooked to the switch board , it had the yellow-/-orange wires to the pin 10/11 of the 8719 chip i removed the said wires patched the switch board now the radio went nuts no rx/tx wont change off a frequency ugggg i just threw it in storage for now get it looked at later down the road
+MikesRadioRepair they used the cb/pa & nb switches also didnt mention after some investigation also found the can the main thick crystal has a ground jumper solder to it the adjustment is broken,
Say I have a Cobra 2000 that will not receive and will not transmit I have changed the finals and the driver but still nothing and the frequency counter is going crazy any ideas
If I knew how to contact you, you'd be my Cobra 2000 GTL GoTo Honest Mike. Have a New (to me) Unit arriving very soon. I want it in Peak Performance for another 40 years. What's not needed is more important than unnecessary and-ons. Though I like to know what an Asymod 6 is all about. Is it necessary, or highly advisable?
Mike this is Harvey Miller do you still work on Cobra 2000 CB radios I have one that will not transmit or receive can you give me a hint of what might be wrong with it
lol well said but transformer don't turn AC to DC ,I know you miss said, transformer step down the voltage from 120 to say 16 volts to your rectifier that coverts to dc
Stupid to run them to their limit! If you want more power get an amp. With a good antenna as your base antenna you do not even need that much power. A base antenna has so much less ground less than a mobile and better gain! In fact a server power supply and a 1 or 2 transistor amp would more than get it down. It would not break the bank at all.
