| Author |
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Snapperhead
| | Posted on Monday, August 26, 2002 - 7:10 am: | 
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Well, I posted this question on "Ask the Tech", But didn't get no answer. So I'll give a shot here on the open forum.
I have a President Jackson mobile that doesn't have any finals in it. I was wondering if anybody out here knows the driver and final numbers in that rig...I'm trying to bring this oldie back to life..Any info would be appreciated....Thanks |
307
| | Posted on Monday, August 26, 2002 - 10:58 am: |
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Sorry , I did not see it..The Finals are 2SC2166 Driver and 2SC1969 Finals..Just opened one up and looked...
307 |
2ec837
| | Posted on Monday, August 26, 2002 - 4:09 pm: |
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Two of the three Jacksons of mine have MRF-477 as finals.I'm not sure about the third,it's in the YL's car.Are the 1969 and the 477 interchangable?I hear the 477 is no longer in production and you now pay big $$ for them. |
Snapperhead
| | Posted on Monday, August 26, 2002 - 6:48 pm: |
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Hey 2ec837, The two transisters that I need. If radio is turned over(UpsideDown). The two in the back left hand side of Chassis.....I remember hearing something about the previous owner said something about MRF-477's in it...Do both those transisters need MRF-477's or is there a different one for the driver?????? Thanks guy,you to 307....You still da man..........73's |
307
| | Posted on Monday, August 26, 2002 - 8:48 pm: |
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There are three versions of the Jackson , The one I have has 2SC1969 transistors in and they are stock...
307 |
Snapperhead
| | Posted on Monday, August 26, 2002 - 9:06 pm: |
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Ok 307, So I can run either of the set or should Run 2sc1969??? I don't know wich model I have of the three.....Serial No. on back is 53000383. Thanks 307........73's |
2600
| | Posted on Wednesday, August 28, 2002 - 1:14 am: |
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Uhh, somebody should mention that the PINOUT of the MRF477 and MRF497 are NOT the same as the 2SC2312/2SC1969!!!. The center leg (and tab end) of the MRF parts is the EMITTER. That's right, the GROUND leg. All the Japanese-style CB/Export finals and drivers have the collector (THE HOT LEG) lead on the center leg/tab. To switch from one type (Motorola) to the other (Jap) means CROSSING legs from the transistor to the circuit board. You'll need some thin teflon tubing to keep them from touching where they cross. If you solder them in straight (MRF in a board meant for JAP parts, or JAP part in a board meant for the MRF) you will get smoke and popped parts. Several, usually. The sub can be made, but don't assume just because they look alike that they CONNECT alike. It's not quite that simple just because it looks that way. The circuit board connections will be laid out to match the part they designed it for.
73 |
Snapperhead
| | Posted on Thursday, August 29, 2002 - 9:26 pm: |
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Ok, I went ahead and used 2sc2166 and a 2sc1969. Radio is up and running....Thanks for all the help you guys.....What through me for a loop was I crossed ref the the two no.'s with NTE and they were both NTE 236, I thought they would be different.....Thanks again....73's |
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