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Search results

  1. S

    Cobra 138XLR low TX power

    Out of curiosity what driver and final is it currently using ? Typically they used a 2SC1306 driver and 2SC1969/2SC1307 final, in my experience if the 1306 is replaced with a 2SC2166 the output would be much lower
  2. S

    Cobra 138XLR low TX power

    If not done already I would definatly replace the 2.2 tant at C17 [Sometimes marked as C117] This tant is directly on the PA stage voltage and almost always go short, Also check the power regulators traces as vie seen these crack if bumped, If the bias voltage is good @ around 0.5 - 0.8v then...
  3. S

    President Walker [The junk Chinese version] channel beep !!

    This is a Walker not Walker II, Does anyone know how i can turn this really annoying channel beep off ? each time i change channel on radio or mic it gives off an ear piercing beep, Manual does state to hold UP [or Down] whie powering on to toggle the beep on/off but ive tried it and it makes no...
  4. S

    SuperTiger 40A low modulation fix?

    Thanks for the reply sorry I havnt responded sooner as I was away for a week RX audio and PA audio appear to be good, You wouldn’t happen to know where Q121 would be located as in their wisdom no components are marked !!
  5. S

    SuperTiger 40A low modulation fix?

    This is definitely not Cybernet or atleast not the Cybernet I know, I’m fairly sure I had one many years ago that was Cybernet but maybe my memory is playing tricks on me, I know the super tiger 40 (no A) was Cybernet (PLLO2A) but that was the version with no channel LEDs
  6. S

    SuperTiger 40A low modulation fix?

    I bought this old radio at a radio rally (ham fest) dirt cheap and it had a horrible howling on received signals and low modulation so I recapped it and that fixed the howling and it now RX good and 4w output but modulation is not good (quiet and slightly distorted) I have to use one of those...
  7. S

    Uniden 2830/President Lincoln button beep removal?

    Anyway, I have given a more detailed solution above for anyone else not finding any useful help here
  8. S

    Uniden 2830/President Lincoln button beep removal?

    You do realise the HTX-100 and Lincoln are different radios yeah ? Also, I searched for Lincoln and Uniden 2830, Not HR2510 It wouldn't have hurt the guy to just say "Rxxx or Cxxx is located next to this" to make it that little easier as 2830/Lincoln has no resistor or capacitor markings on...
  9. S

    Uniden 2830/President Lincoln button beep removal?

    I found it myself, Much easier than trying to find an unmarked resistor/capacitor, Cut brown wire on cable header located right next to Side Tone VR [VR116]
  10. S

    Uniden 2830/President Lincoln button beep removal?

    Thanks, I found your post from 2009, And no indication at all where the components are or their values, So i have to find a decent schematic to find them, Cheers for your very "limited" input! A simple "They are located near X" would have helped
  11. S

    Uniden 2830/President Lincoln button beep removal?

    Does anyone know how to remove the annoying button press beep on said radio? I've looked online and i did'nt find anything Thanks
  12. S

    GE Superbase and PLLO2AG ?

    Has anyone here had any experience with the GE superbase ?, I am trying to figure out why it won't work with a PLLO2AG installed, It works perfectly fine with the PLLO2A, Now this is the part i find bizarre, If i install a PLLO2AG and ground F.S it will then work normally [26.965 to 27.405 in...
  13. S

    Realistic HTX-100 button beep removal?

    Excellent thanks, I simply cut the blue wire, All I need to do now is figure out why the hi Lo power switch isn’t working (switch is fine) or I may just add LSB too it instead Thanks again for your quick response
  14. S

    Realistic HTX-100 button beep removal?

    I recently required a dead and butchered HTX-100, After fully recapping, a lot of trace repair, new TDA1905 amp, Used but good MRF477 it’s now working fine, But does anyone know how I can remove the button press beeping as it’s really annoying, Any help appreciated, Thanks
  15. S

    SS 3900

    Has anyone figured out how to get into the service/engineer menu yet? For some reason those who know are not giving the secret away !!
  16. S

    President Jackson 2 Modulation modification

    Old post i know, But, Just to confirm, I did this mod to a Black Jackson II and it did indeed make a massive difference.