| Author |
Message |
    
Chainsawiowa
New member
Username: Chainsawiowa
Post Number: 6
Registered: 1-2005
| | Posted on Wednesday, January 26, 2005 - 8:42 pm: | 
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I need to know how to do Talk Back with the 257, Also I can use an external speaker also. Also is there really an adjustment in the stock Mic for more modulation ? thanks |
Honkytonkman593
Intermediate Member
Username: Honkytonkman593
Post Number: 164
Registered: 12-2001
| | Posted on Sunday, January 30, 2005 - 7:17 pm: |
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yeah there is an adjustment inside the mic. it improves the audio a lil but the d104 m6b handheld makes coppers radio scream! sound better then my icom . no idea on talk back though ...good luck |
Chainsawiowa
New member
Username: Chainsawiowa
Post Number: 9
Registered: 1-2005
| | Posted on Thursday, February 03, 2005 - 7:54 pm: |
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Thanks Honky Tonk Man, I still need one of the techs to answer on the talkback please ???????????? |
Chad
Intermediate Member
Username: Chad
Post Number: 130
Registered: 11-2004
| | Posted on Thursday, February 03, 2005 - 9:41 pm: |
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chainsaw,
Why?
Press the button, talk, it will sound good.
I have listened extensively to the 257 thru other radios, don't worry, it sounds good, it's taken care of. |
Tech808
Moderator
Username: Tech808
Post Number: 4739
Registered: 8-2002
| | Posted on Friday, February 04, 2005 - 12:55 am: |
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Chainsawiowa,
Sorry, but I do not remember seeing one for adding talkback to the 257.
And YES there is an EXT Speaker jack on the back of the 257 for an external speaker.
Lon
Tech808
CEF808
N9OSN
|
Sonoma
Intermediate Member
Username: Sonoma
Post Number: 160
Registered: 11-2001
| | Posted on Friday, February 04, 2005 - 2:43 am: |
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tech 808 it should be the same as the eagle sidewinder.if you do not have the mod for that I have a tape on the sidewinder and I will try to look it up.I think it is the same as a cobra 29 etc .Iwill look it up and see if I can explain it |
Sonoma
Intermediate Member
Username: Sonoma
Post Number: 161
Registered: 11-2001
| | Posted on Friday, February 04, 2005 - 3:05 am: |
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OK I looked at the tape and I will have to try to take a picture of the board to get the locations.It is something like in my last post but not quit for a cobra.also you do not use a resister it is just hard wired.Give me a couple days and I will see what I can do. |
Sonoma
Intermediate Member
Username: Sonoma
Post Number: 162
Registered: 11-2001
| | Posted on Saturday, February 05, 2005 - 10:52 am: |
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I could not get a good picture so I will try to explain how to install the talk back.
take the covers off the radio and on the top side of the board just above the external speaker plug were the external speaker terminal solders to the board ,it is the very 1st solder joint inside the radio .solder one end of the wire to this location and then solder the other end to board ground.this will give you talk back.you can put a switch in line if you want to turn it off.the talk back is not very loud on my radio.if yours is to loud you can use a 50 to 100 ohm resister.
to verify you have the right hookup at the speaker jack put a ohm meter to the solder joint of the ext, speaker jack to the outside of the plug hole for the external speaker and you will show coninuity.
that is all there is to it. |
