| Author |
Message |
    
Rascal853
Junior Member
Username: Rascal853
Post Number: 12
Registered: 2-2004
| | Posted on Saturday, March 10, 2007 - 3:15 pm: | 
|
im wanting talkback in this radio would anybody be able to help??? thanx |
Tech808
Moderator
Username: Tech808
Post Number: 13211
Registered: 8-2002
| | Posted on Saturday, March 10, 2007 - 3:54 pm: |
|
Rascal853,
Remove D67 (May be a SMT) depending on when your radio was produced.
It will give you a low non adjustable sounding talkback.
Personally after doing it I do not feel the mod is worth the trouble.
And if you are not used to working with SMT's BE VERY CAREFUL and DO NOT use too much heat.
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#33 ~ CVC#002
10-10 #61493 ~ 10-10 VP#2688
Tech808@copperelectronics.com
|
Rascal853
Junior Member
Username: Rascal853
Post Number: 14
Registered: 2-2004
| | Posted on Sunday, March 25, 2007 - 8:37 pm: |
|
what is a SMT? the diode d67 is there! what do you suggest? |
Romstar
Junior Member
Username: Romstar
Post Number: 33
Registered: 3-2007
| | Posted on Monday, March 26, 2007 - 4:38 am: |
|
SMT = Surface Mount Technology
Since you identified the diode, remove it and see if that suits your tastes. Otherwise, put it back and look for another alternative.
Romstar |
Rascal853
Junior Member
Username: Rascal853
Post Number: 15
Registered: 2-2004
| | Posted on Monday, March 26, 2007 - 9:47 am: |
|
removed d67 and i didnt get anything more than i had before (nothing) any other ideas? ill put back 67! |
Romstar
Junior Member
Username: Romstar
Post Number: 34
Registered: 3-2007
| | Posted on Monday, March 26, 2007 - 5:50 pm: |
|
This is a bit of a hit in the dark, but look hard at D78.
I can't be sure, but if you are comfortable with lifting that off to try it, see what happens.
Romstar |
Rascal853
Junior Member
Username: Rascal853
Post Number: 17
Registered: 2-2004
| | Posted on Tuesday, March 27, 2007 - 11:36 am: |
|
i will have to try this and see!! thanks |
Romstar
Junior Member
Username: Romstar
Post Number: 38
Registered: 3-2007
| | Posted on Tuesday, March 27, 2007 - 8:45 pm: |
|
Like I said, no guarantees.
I don't have the schematics for your specific radio. I know, I looked.
Good luck with it though.
Romstar |
Unit199
Intermediate Member
Username: Unit199
Post Number: 452
Registered: 8-2003
| | Posted on Wednesday, March 28, 2007 - 1:26 am: |
|
D78 should do the job.
HARVE
UNIT199
CEF210
CVC18
KB0YVK
|
Johhn
Intermediate Member
Username: Johhn
Post Number: 127
Registered: 8-2007
| | Posted on Saturday, April 26, 2008 - 11:41 am: |
|
Maby you get talk back, but at a level you can't
hear so well. put your EAR close too the speaker.
If you hear it now ,You need a Ampiflied speaker.
My 148 is like this,You had talk back all the
time.threw the EXT jack.. johhn
I.E.a speaker with a power cord +,- ... |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2467
Registered: 1-2005
| | Posted on Sunday, April 27, 2008 - 11:54 am: |
|
Does the 2980 have PA? Jump a 100ohm resistor from the PA jack to EXT speaker jack on the foil side of the board like Johhn has his 148 setup. You can put a toggle inline for on/off. If no PA on the radio you might just be better off to let it be or find a tech who knows the radio.
KEEP IT REAL!
Kenny
cef491(27.115lsb)
2sf491(27.555usb)
Indiana
|
