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  1. Skyrider

    Motorola MTX838/MTS2000

    thanks for the input
  2. Skyrider

    Motorola MTX838/MTS2000

    RBTMS, non sense, all you need is the right info to make it useful. Thanks for the info Drag Racer!
  3. Skyrider

    Motorola MTX838/MTS2000

    Would also like to know if this can be used on the GMRS band. I can't find much info but some people say they've seen them on VHF frequencies. I assume they could be used on GMRS. Thanks.
  4. Skyrider

    Motorola MTX838/MTS2000

    Hi everyone, Just bought an MTX838 for a few bucks at the flea market. Charged the battery and it turns on but emits a long continuous beep in every mode by 1. Other than that there's not much to it. I can't seem to find a user manual for it anywhere. From what I can find online, this is an...
  5. Skyrider

    Fried a Grant XL...

    Hmm, but what indeed caused that in the first place??
  6. Skyrider

    Cobra 134 low TX & RX

    Alright guys, was able to get a hold of the service manual for the Cobra 138, should work for any other radio using the same chassis PC-003AA. Cobra 134, Midland 13-893, and 13-895. Obviously there are differences between the radios. In this service manual you'll find information that will...
  7. Skyrider

    Cobra 134 low TX & RX

    Yes, I think I know who you are!
  8. Skyrider

    Cobra 134 low TX & RX

    Thanks to all for the comments and suggestions. It turns out we definitely do have some alignment issues which I missed on my initial trials. On my first test I remember I went through all of the channels checking them against my normal receiver and they all worked. I also noticed some...
  9. Skyrider

    Cobra 134 low TX & RX

    Hi, well keep in mind it's a big country and a lot of what ends up over on your side is probably all kinds of skip clumped up from different places. It sounds the same over this way from your side. I hear side banders on the upper 30s at the same time sometimes I hear truck drivers in the...
  10. Skyrider

    Cobra 134 low TX & RX

    In Mexico there is a huge thing for personalizing and decorating personal things. Everything has to have a personal touch of some kind. Houses are very colorful for example. It's a type of folklore. It's fun. I suppose it comes from as far back as the natives of the country. Just like...
  11. Skyrider

    Cobra 134 low TX & RX

    Checked antenna path from relay for any bad capacitors but found none. Behind relay there is no capacitors or any components that are shared directly between both of the modes that could be causing some kind of issue at the antenna. I'm trying to go for the easy stuff for now until I could...
  12. Skyrider

    Cobra 134 low TX & RX

    Hey everyone, I got myself a very nice old radio. A Cobra 134. Market find. The thing powers and transmits and receives, just very very low. Nothing more than 1 or 2 S-units on receive and no more than around 200mw power output or less on output. It's so low on the transmit that i can't...
  13. Skyrider

    cobra 29 wx nw st mods

    I have to ask a dumb question. What exactly does the sound tracker button do anyway? I have a little cobra 25 with sound tracker and when i press the button i dont really notice any difference at all! :glare:
  14. Skyrider

    power supply problems

    Mouser should have the replacement transistors. Check the board to see if any other components look to have been messed with or bypassed, usually, as already mentioned, power supplies will cut out when a certain voltage is exceeded.
  15. Skyrider

    Cobra 148GTl only static and no transmit.

    I think i found the final piece of the puzzle here, at least when it comes to this mod. I completely missed a VERY important detail. Someone swapped out the original 11.325 crystal (x3) with an 11.178. Well that explains a whole lot! Anyone know were i could get one?
  16. Skyrider

    Cobra 148GTl only static and no transmit.

    Ive restored most of the original components to undo the modification except for VR 5 and the 1n4148 diodes. After that i proceeded to go ahead and go through the alignment procedure. Im having problems adjusting things to were theyre supposed to be according to the manual. After adjusting...
  17. Skyrider

    Cobra 148GTl only static and no transmit.

    Hello everyone, I received this 148GTL from someone with a bunch of ugly hack jobs done to it. The first thing i did was to undo a nasty free-band mod someone did and restored the original functionality of the front switches (nb anl etc) and fixed all the traces on the PLL. I plan to undo all...
  18. Skyrider

    RCI 2950 only putting out 10 watts on SSB

    I have my friends 2950 that for some reason only does 11 watts tops on SSB. On AM it does around 5 or so watts tops. I had the replacement driver transistors handy but replacing them didnt do anything. I did voltage checks on the driver transistors and theyre all very very wonky. Il be...
  19. Skyrider

    RCI 2970 RF output problems

    post updated. Got the radio transmitting now!:wink:
  20. Skyrider

    RCI 2970 RF output problems

    RCI 2970 SSB rf indicator not working *originally a post about not having any output but thats fixed now* Not too sure if this is fixable since i suppose its probably having to do with the CPU circuits that are unrepairable. But my RF indicator on SSB does not work at all, neither on...