| Author |
Message |
    
Outkast
Junior Member
Username: Outkast
Post Number: 15
Registered: 9-2005
| | Posted on Monday, October 10, 2005 - 2:30 am: | 
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Is there an easy way to add talkback to the 148 GTL China model? I am not really concerned about easy adjust ability, I am just so used to having it with the old DX99V that I cant stand going with out it now. |
Goat373
Member
Username: Goat373
Post Number: 55
Registered: 3-2005
| | Posted on Monday, October 10, 2005 - 7:59 pm: |
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just jump the negative speaker terminal to ground through a 100 ohmm resistor and a switch. |
Moonraker
Junior Member
Username: Moonraker
Post Number: 35
Registered: 3-2005
| | Posted on Monday, October 10, 2005 - 9:28 pm: |
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Outkast, left you some info on your other post in ask the tech > radios moblie. I gave same info as Goat did, but a little more detailed. |
Outkast
Junior Member
Username: Outkast
Post Number: 17
Registered: 9-2005
| | Posted on Monday, October 10, 2005 - 9:43 pm: |
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Well I tried it with a 100 ohm resistor and it squealed like a little pig, and I couldnt find any other resistors so I stole a VR pot out of an old audio amplifier that didnt work anymore and put that in and can now adjust it from 2 ohms to 600 ohms and its about perfect at 150 ohms. Only problem I have with this is I have to take the cover off to adjust it so now I need to find a VR pot out of a radio and drill a little hole in the back and stick it through, thanks for the help Goat!!! |
Goat373
Member
Username: Goat373
Post Number: 57
Registered: 3-2005
| | Posted on Tuesday, October 11, 2005 - 9:37 pm: |
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no problem, i was posting on my psp (play station portable) and typing is friggin hard on that thing (cellphone-ish) so i had to keep it short...glad i could help |
Gator
New member
Username: Gator
Post Number: 4
Registered: 2-2003
| | Posted on Monday, March 13, 2006 - 12:45 am: |
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Need to remove talk back from 29ltd classic
it's a pain in the neck
thank you, |
Tech808
Moderator
Username: Tech808
Post Number: 9458
Registered: 8-2002
| | Posted on Monday, March 13, 2006 - 8:21 am: |
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Gator,
Look inside at the rear of your radio and you will probably find a 100 ohm resistor placed/soldered between the PA jack and EXT Speaker Jack.
Remove it.
Hope this helps,
Lon
Tech808
CEF808
N9CEF
CVC#2 |
Bridge_man
New member
Username: Bridge_man
Post Number: 1
Registered: 3-2006
| | Posted on Sunday, March 19, 2006 - 1:30 pm: |
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can i add a volume knob inline with the resistor to control the talkback? |
Moonraker
Intermediate Member
Username: Moonraker
Post Number: 184
Registered: 3-2005
| | Posted on Monday, March 20, 2006 - 12:31 am: |
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Never tried, but it should work fine. |
Bridge_man
New member
Username: Bridge_man
Post Number: 3
Registered: 3-2006
| | Posted on Wednesday, March 22, 2006 - 3:14 pm: |
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yep!works great!i got alot of feedback when using a pwr mic but now i can control the talkback and and turn the pwr mic wide open with no feedback and super modulation! thanks!!! |
Odh
New member
Username: Odh
Post Number: 1
Registered: 3-2006
| | Posted on Saturday, March 25, 2006 - 10:35 pm: |
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Help
I'm looking for tune-up info for a Cobra 75-WXST CB radio in a mike. Adjusting the Output and Modulation. |
Mojo
New member
Username: Mojo
Post Number: 1
Registered: 10-2007
| | Posted on Tuesday, October 23, 2007 - 2:41 pm: |
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Have a Grant XL that talk back was installed in. How can I remove it and make the PA work again. It has a switch that turns the talk back on low and high, probably 2 differant resistors but not sure. I run volunteer fire watch for the DNR and I need to announce to campers that they need to vacate. |
