| Author |
Message |
    
Bigfoot
Member
Username: Bigfoot
Post Number: 57
Registered: 12-2001
| | Posted on Monday, September 10, 2007 - 5:38 pm: | 
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Can anyone familiar with this radio tell me the exact board location and part value of the audio limiter? Also I need to know the board location of TR41, and which side is the collector side? For the clairfier mod. I will say thank you in advance. |
Road_warrior134
Intermediate Member
Username: Road_warrior134
Post Number: 117
Registered: 12-2006
| | Posted on Monday, September 10, 2007 - 6:21 pm: |
|
Bigfoot
TR32 is the AMC limiter but unless you want to have distorted SSB audio I do not recommend removing it as by doing so you also disable the ALC control thus puttin' SSB audio at full blast instead cut R249 which is very close to VR8 towards the front of the rig , location of TR41 is lookin' down from the component side of the board and from the front of the rig it is the first tranny bolted on the right side of the chassis the collector is centre pin with about 8.7 volts on it , hope this is of help 
JIM
Road Warrior134
CEF#858
HAM#230
CVC#116
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Dale
Senior Member
Username: Dale
Post Number: 1127
Registered: 12-2002
| | Posted on Monday, September 10, 2007 - 7:22 pm: |
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well said jim.i have a ss3900 and use it on
cef nets and when skip is good everyone says
im sounding good.the vrs in mine are
vr14-amc/modulation turn just under max
vr13-am dk
vr12-ssb power set about 3/4 way up
hope this helps mine is just a the orignal 3900
but should be the same
dale/a.k.a.hotrod
cef426
cvc#64
|
Bigfoot
Member
Username: Bigfoot
Post Number: 58
Registered: 12-2001
| | Posted on Monday, September 10, 2007 - 8:28 pm: |
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Ok, the problem is that the limiter is clipped, I need to replace it but I do not know the part value.
Thanks! |
Road_warrior134
Intermediate Member
Username: Road_warrior134
Post Number: 119
Registered: 12-2006
| | Posted on Tuesday, September 11, 2007 - 7:19 am: |
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2SC945P is the part number for TR32 limiter tranny
JIM
Road Warrior134
CEF#858
HAM#230
CVC#116
|
Bigfoot
Member
Username: Bigfoot
Post Number: 59
Registered: 12-2001
| | Posted on Wednesday, September 12, 2007 - 8:58 pm: |
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All right, that is the info I needed. Thanks for the help! |
Dale
Senior Member
Username: Dale
Post Number: 1133
Registered: 12-2002
| | Posted on Thursday, September 13, 2007 - 5:18 am: |
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let us know how it turns out i know i like mine
use it all the time on the cef net
dale/a.k.a.hotrod
cef426
cvc#64
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