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talk back 2510 mod

tvrc18

Active Member
May 1, 2011
178
5
28
I tried the mod #2 on Rogerbirds site for talk back removal and it did not work. I can still hear audio thru the internal speaker when transmitting. I used a 1n4148 diode and the mod calls for a 1n914a I think it was but the spec sheet shows them to be almost identical. Anyone do this mod or try the 3rd mod on Rogerbirds site? I hate that audio while transmitting.
 

i did the 2nd mod on mine, worked for me , i used the exact parts rogerbird used it worked for me. did you make sure the the diode was in the correct direction, it can only go one way. it wont work turned backwards. 73s midnight special
 
Yes I had the diode in the correct position. I did the 3rd mod with a diode and resistor going to q127 base and that did the trick. I need to send it back to Rogerbird because it has started having a power problem now. I just got it back from Roger but these things are old and you never know about the old caps and such. I have not seen this before, it was doing 40 watts ssb around 27.600 but up in the 10 meter band 28.400 only 5 watts. Weird.
 

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.