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Message |
    
Georgeodjungle
Junior Member
Username: Georgeodjungle
Post Number: 46
Registered: 1-2006
| | Posted on Sunday, March 12, 2006 - 5:24 pm: | 
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just converted some more radios
510xl & 142gtl...
wow..
they smoke all the other finals.
wish we knew about them sooner. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2561
Registered: 7-2004
| | Posted on Sunday, March 12, 2006 - 7:51 pm: |
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just curious as to how the mod works on the 142gtl??? its final rf stage, including TR41 & TR39, is virtually identical to that of the 148gtl(original, 5 pin mic), at TR36 & TR39. YET, the erf2030 mod has not been proven to work on those 148's... |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 1291
Registered: 9-2004
| | Posted on Sunday, March 12, 2006 - 10:58 pm: |
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georgeODjungle,
good work man, keep it coming!
someone has to have the brass to try this in an old style MB8719 chassis. (not me!)
so did you just follow the instructions for the new 148 and cross ref. the part numbers?
pat, how different is the 142 from the 2000 in this respect?
matt |
Georgeodjungle
Junior Member
Username: Georgeodjungle
Post Number: 48
Registered: 1-2006
| | Posted on Sunday, March 12, 2006 - 10:59 pm: |
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awsome...
the 142 is about 45 watt with 8 watt dead key.
that's on a dummy load.
but the cheepy 510 is about 10 watts more and way louder.
yes all the rf stages are are about the same.
the royce was the only odd ball
so far we modded.
2000gtl
trc451
79-892
president washington
19dx
1-641
142gtl
510xl
once you figure it out, it's realy easy.
play around with tha cap values or use trimmers.
have not done a 148 but,
that 2000 should be the same as the 148.
turned all the way up + bigger regulator.
pep on antenna was 70+ on ssb.
60 on am.
had to turn it down!
dims the lights + way to hot & raspy.
should have tried with 12v power.
45 to 50 seems to sound and run all right.
also the 510 came back "burning smell"
it rosted that last resistor on the rf output next to L4.
that 19 should smoke it to but have not heard.
just like most t&p,
the lower dead key the bigger swing. |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 1297
Registered: 9-2004
| | Posted on Tuesday, March 14, 2006 - 12:24 am: |
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george, please,please,please,
would you tell me the exact mods you did to the 2000gtl?
this is invaluable info to me. (not sure i'll try it yet, but want to know how)
also, you said "bigger regulator"
what did you mean my this?
thanks again for the info and for your efforts,
matt |
Crazy_d
Junior Member
Username: Crazy_d
Post Number: 26
Registered: 6-2005
| | Posted on Tuesday, March 14, 2006 - 10:40 am: |
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Hi George,
I would like to know the instructions for the pro 510xl. I have already done the power mods and everything else but I want to do the ERF2030 change out. What output did you see with that (dk and swing?). I will upgrade the wattage rating of the resistor next to L4 to a higher value. Thanks! |
Georgeodjungle
Junior Member
Username: Georgeodjungle
Post Number: 49
Registered: 1-2006
| | Posted on Tuesday, March 14, 2006 - 2:37 pm: |
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here's the mod for all radio's
i'll give it a way even i have to figure it out the old fashion way.
1)jump the resistor & cap @ the base
2)add trimmer, 500 pf + -, or replace with 1m to cap, before jummper.
3)clip coil @ that junction.
4)clip first cap out of the collector to ground.
5)add pot or 33k +- resistor from emitter to regulated 12v.
6)add erf & 369
repeat for driver, less #3.
ta da, presto changeo, big radio.
there might be a better way but works for me.
kid:
the washington, road talker & 2000,
dims lights realy bad.
power supplys ARE way to week, you NEED to pump it up to.
crazy:
you won't beleve my any ways.
but it turned the pro510xl to be the biggest radio.
& i'd just clip that "safty" resistor. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2566
Registered: 7-2004
| | Posted on Tuesday, March 14, 2006 - 3:44 pm: |
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***** at ******** told me the erf2030's would NOT work with the cobra 2000gtl base, due to the way the final transistor is set up. he said it would take a major rework of that whole circuit, which could then compromise the 'whole reason for its being'. i do NOT know that for fact, however. curious as to what needed to be done to make them work in the 2000gtl & (original style) 148-type radios. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2567
Registered: 7-2004
| | Posted on Tuesday, March 14, 2006 - 5:27 pm: |
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your post wasn't there prior to my last, george...big change in circuitry, as emitter on final was previously grounded, & now receives voltage.
will have to give it a shot |
Wankle
Junior Member
Username: Wankle
Post Number: 14
Registered: 5-2003
| | Posted on Tuesday, March 14, 2006 - 7:52 pm: |
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georgeodjungle.
what does step 2 mean?
2)add trimmer, 500 pf + -, or replace with 1m to cap, before jummper. |
Georgeodjungle
Member
Username: Georgeodjungle
Post Number: 50
Registered: 1-2006
| | Posted on Wednesday, March 15, 2006 - 3:32 pm: |
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pat00:
yes you are right i ment -12
not the chassis ground
that want you to paybass that diode & resistor.
wankle:
theres a cap before the resistor that gets jummped, look at c152 on the 148.
sorry i can't discribe it to good.
i've tried to post circuit:
ill try again.. |
Wankle
Junior Member
Username: Wankle
Post Number: 15
Registered: 5-2003
| | Posted on Wednesday, March 15, 2006 - 5:43 pm: |
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yes please post the circuit |
Georgeodjungle
Member
Username: Georgeodjungle
Post Number: 51
Registered: 1-2006
| | Posted on Friday, March 17, 2006 - 1:44 am: |
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here ya go...
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