| Author |
Message |
    
Mrblack
Junior Member
Username: Mrblack
Post Number: 28
Registered: 2-2002
| | Posted on Saturday, April 03, 2004 - 2:06 pm: | 
|
anyone know the mods for this radio....
it is a Rev.3 board
Like to have power mod and the audio mod
thanks |
Kc0gxz
Advanced Member
Username: Kc0gxz
Post Number: 703
Registered: 3-2003
| | Posted on Monday, April 05, 2004 - 4:36 pm: |
|
Mrblack
1- Adjust VR-5 or cut D-9 to open up the modulation.
2- For A/M power, tune L-13, L-10, L-9 and L-8 for maximum RF power.
3- Don't get your hopes up or expect wonders because this is one of Cobras' bare-bone radios.
Jeff, kc0gxz. |
Mrblack
Junior Member
Username: Mrblack
Post Number: 29
Registered: 2-2002
| | Posted on Monday, April 05, 2004 - 10:08 pm: |
|
No that is not the one
I have that one
It does not have vr5 it has vr501 vr502
I thank it is one of the new ones
thanks a bunch
|
Kc0gxz
Advanced Member
Username: Kc0gxz
Post Number: 707
Registered: 3-2003
| | Posted on Tuesday, April 06, 2004 - 9:54 pm: |
|
Mrblack
You asked for the Cobra 21-LTD and those are the power and modulation modifications for it.
There are other Cobra 21s also.
1-Cobra 21
2-Cobra 21-A
3-Cobra 21-GTL
4-Cobra 21-LTD
5-Cobra 21-LTD Classic
6-Cobra 21-Plus
7-Cobra 21-X
8-Cobra 21-XLR
If you have the 21-LTD "Classic", then the mods are a bit different than the standard LTD model.
For the 21-LTD Classic, adjust VR-4 or cut D-7 to open up the modulation.
2- For A/M power, tune L-7 and L-9. That's it.
Jeff, kc0gxz. |
Tech808
Moderator
Username: Tech808
Post Number: 2064
Registered: 8-2002
| | Posted on Wednesday, April 07, 2004 - 12:15 am: |
|
Mrblack,
If none of the above that Jeff has listed work, LOOK to see if your radio has: Q11 and 116 & 118
If it does it will be the same as the: Cobra 21 LTD WX
For the Cobra 21 LTD WX:
MODULATION: ADJUST ~ Q11
AM POWER: ADJUST ~ 116 & 118
Hope this can be some help as I cannot find anything for the 21 LTD ST (Sound Tracker)
Lon
Tech808
|
