| Author |
Message |
    
Captian_radio
Intermediate Member
Username: Captian_radio
Post Number: 185
Registered: 9-2004
| | Posted on Monday, April 30, 2007 - 12:51 pm: | 
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Is it possible to replace a 2SC1307 with a 2SC1969 or something else compatible?
Robert L. Spicer
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Captian_radio
Intermediate Member
Username: Captian_radio
Post Number: 187
Registered: 9-2004
| | Posted on Thursday, May 03, 2007 - 10:57 pm: |
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Does anyone know??
Bob CEF451
Robert L. Spicer
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Romstar
Intermediate Member
Username: Romstar
Post Number: 101
Registered: 3-2007
| | Posted on Friday, May 04, 2007 - 7:49 am: |
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Well, the 1307 is a 13 watt transistor, and the 1969 is a 16 watt unit.
Both are NPN, and I would guess you can swap them. If you do, be sure to check all your values, bias settings, and driver. There would need to be some minor adjustment for the new transistor.
Grab the spec sheets for both, and compare them. That will tell you a lot.
Romstar |
Captian_radio
Intermediate Member
Username: Captian_radio
Post Number: 188
Registered: 9-2004
| | Posted on Friday, May 04, 2007 - 5:12 pm: |
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Tnx Rom, yes I can re adjust the bias not a problem.I know that the 1307 is getting hard to find.The final went in my old cobra 139 xlr and I have some spare 1969's hanging around.
Bob CEF 451
Robert L. Spicer
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Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 2522
Registered: 9-2004
| | Posted on Sunday, May 06, 2007 - 12:44 am: |
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no prob using the 1969 in that radio.
you'll have to rebias.
set driver at 30mA. and final at 70mA.
what caused the final to blow?
old age?
matt
anyone wanting a "clean signal", just look to the left and build one of these!!!
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Captian_radio
Intermediate Member
Username: Captian_radio
Post Number: 189
Registered: 9-2004
| | Posted on Sunday, May 06, 2007 - 10:06 am: |
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Yes Kid it was old age that caused the final to blow, my old age , I was testing a mic and forgot to switch the antenna over and pop goes the weasel lol lol.Call it a seniors moment lol.
Bob CEF451
Robert L. Spicer
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Captian_radio
Intermediate Member
Username: Captian_radio
Post Number: 191
Registered: 9-2004
| | Posted on Sunday, May 06, 2007 - 5:29 pm: |
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I just replaced the final in my 139xlr and I must say thats its working great, I have a spare 1969 left in case a seniors moment overtakes me again lol
Bob CEF451
Robert L. Spicer
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Jstrunck
New member
Username: Jstrunck
Post Number: 2
Registered: 1-2008
| | Posted on Sunday, September 28, 2008 - 3:56 pm: |
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Thanks! For the info on the 1307 to 1969 swap! I have a 139xlr just waiting!
John |
