Cobra 200 GTL DX Repair & Alignment Part 5 of 5 

Oh i miss that bloke.

Hahaha yep that would be exactly what he would of said. STANDBY !!! 🤣

@@g1fsh Yeah me too, it's so sad he is no longer with us. I notice his valve amp videos are getting some well deserved hits.

Hi Chris, Yes it was a tough one and finally we got there. I have plenty of gear in for repair so I'll be hopfully making more videos. LOL Marconi cameo appearance, it's not mine as it's also in for repair. I do like the 2955's.

I think everyone who bought a Cobra 200, or 150 for that matter got ripped off :D

Thanks for your comment. I'm glad you enjoyed the videos and yeah it's great that it finally firing on all cylinders.

I'm glad you enjoyed the series

Hi Chris, Thank you for the comment, I am glad you enjoyed the videos and found them helpful. In the electronics servicing game (well for me anyway) every day is a learning day.

@@M0XFXUK Agreed, we're always learning John. Please keep the videos coming! 🙂

Thanks Gary. Yeah it's an interesting rig only real issue is that the TX and RX frequencies get out of sync in FM when using the clarifier. I think it’s to do with the 10.240 PLL clock getting pulled by the clarifier as it’s only FM uses the clock for receive. Design issue, not sure if Cobra sorted it out in later models.

@M0XFXUK no they havent yet mate. I read somewhere that it shows its head only after the 11 meter mod is done.

Thanks James

Thanks Marc, Yep it sure was a scrapper.

A lot of work went into that John to save it .... Let's hope whoever it goes to / Belongs to appreciates the work involved in bringing this radio back from the Dead ... 👍

@@Gw0wvl Yep he's does, it's a mate of mine. It belongs to George EI7KO and he has a video of it on his channel before he sent it over to me. it's called (eBay COBRA 200 GTL DX... A TALE OF WOE)

Ah ... I know George 👍 ..... Have a great day John , I'm in work , So ide best get back to the work bench and spark up the soldering iron .

@@Gw0wvl 👍

Thanks for your coment. Hahaha I think I need therapy after that repair.🤪

Hi Ray thanks for the comment. It may want T710 replacing as it looks like it’s been really baked by a soldering iron. That being said it's seems to be working but I wouldn’t trust it long term. They are pain to get out as the pins are so loose in the former and pull out when you try to de solder them.

@@M0XFXUK Hi John yea the coils are a nightmare to get out in all the new SMD radios the pads come away far to easy.

Hi Kevin, Thank you for the comment. To be honest I don't think it would make much of a difference. For me it would make sense to set the S meter to the centre of the receivers tuning range which is in this case is 28MHz. Regarding it being really out, I had replaced the signal strength meter trim pot for a new one which I didn't show in the video as it was getting too long. In fact I replaced all the resistor trim pots as they were all in pretty bad shape. Another thing is that I set S9 to 50uV -73dBm which I have been told it should be 100uV for CB radios but that being said 50uV is correct for the 10 meter band so I guess it's what you want to use the radio for. I'm glad you like the videos. Best regards John.

Hahahaha Yeasu!!!🤠

Hello Charles, There is a simple mod you can carry to make these work on the 11 meter band and cover the FCC / EU CB channels. I have never done this myself but it looks straight forward enough here is a link. Note: You will need to be able to solder / de solder to a reasonably high standard as this involves surface mount components. If you are not experienced then take the radio to someone who is as it's really easy to cause damage to the unit. swap.qth.com/fcc/cobra-gtl-mod.pdf

@John Hawkes just wanted to say thank you so much for the help I hope you have a great night and a better tomorrow...

Hi Gavin, it's great to hear that you enjoyed the video, it was certainly a challenge to sort it out. You mention would I be interested in doing another one, what type of radio is it and what is the problem?

@M0XFXUK I have a cobra 200 gtl dx the same as you have done there are a lot of common faults with it slightly out of tune squelch problem and volume needle is not on point and probably the same issue you had with the one you did

Hi Mike, thank you for your comment I'm glad you like the video.

Hello Bermuda, what a cool place to live. Alan I am really chuffed that you enjoyed the video. It was fun making the videos and I hope to be making more before too long. Very Best Regards M0XFX.