| Author |
Message |
    
Goat373
Member
Username: Goat373
Post Number: 79
Registered: 3-2005
| | Posted on Tuesday, November 29, 2005 - 11:19 pm: | 
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where can i get them, ive seen a bunch of spec sheets but no where to purchase...i wanna do the swap in my 257 and will prolly buy a lot of them for the work bench...customers will love a REAL 40 watt pep 25ltd / 50 wat pep galaxy 44 that runs clean and dosent splatter(which is a bit of a stretch for any galaxy)pokin' at'cha pat |
Tech808
Moderator
Username: Tech808
Post Number: 8513
Registered: 8-2002
| | Posted on Tuesday, November 29, 2005 - 11:24 pm: |
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Goat373,
Copper should have them in stock soon for you and other Copper Forum Members.
As soon as they Arrive I will make a post on them.
Hope this helps,
Lon
Tech808
CEF808
N9OSN |
Goat373
Member
Username: Goat373
Post Number: 81
Registered: 3-2005
| | Posted on Tuesday, November 29, 2005 - 11:28 pm: |
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yay...i LOVE copper |
Chad
Advanced Member
Username: Chad
Post Number: 595
Registered: 11-2004
| | Posted on Wednesday, November 30, 2005 - 9:00 am: |
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If you do some searching you can see theat they are a semiconductor equivalent to another commonly available part.
That's all I am saying.
Chad |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 906
Registered: 9-2004
| | Posted on Thursday, December 01, 2005 - 12:13 am: |
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they are also available at a company that sells a lot of parts.
what i would like to see is the instructions for putting them in a 2000gtl.
also remember, anyone buying these for your radio, there is another part you must have to make the MOSFET work in a radio that is not designed for them.
matt |
Tech808
Moderator
Username: Tech808
Post Number: 8521
Registered: 8-2002
| | Posted on Thursday, December 01, 2005 - 12:33 am: |
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The EKL ~ ERF-2030 / 25 Watt* RF Power Transistor finals are "MOSFET".
They can replace the 2SC2166, 2SC1969, and the 2SC2312 Mitsubishi transistors that were discontinued with minimal circuit modifications.
So far with them in a Magnum Mini Mag and a Cobra 29 that I have I am seeing 28 to 34 watts PEP from a single ERF-2030.
When I have time probably after the first of the year I will be swapping them into my Magnum S-3 and Magnum S-3200 Base radio.
I cannot wait to see what kind of power I get out of 3 of them in the Magnum S-3 
Lon
Tech808
CEF808
N9OSN |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 907
Registered: 9-2004
| | Posted on Thursday, December 01, 2005 - 1:02 am: |
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lon, i have been known to be mistaken before, but this time i believe you are mistaken.
there is a new part being made by Workman that is a direct replacement for the 2SC1969, but it is not the ERF-2030.
the ERF 2030 is a vertical gate MOSFET power device.
the reason for needing the additional component, (most likely a shottky barrier device to eliminate the possibility of the gate going .3 volts negative with respect to the source) is because the new part is a MOSFET.
matt |
Chad
Advanced Member
Username: Chad
Post Number: 599
Registered: 11-2004
| | Posted on Thursday, December 01, 2005 - 9:17 am: |
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Lon, Care to elaborate on them not being MOSFET? This is the reason for the support components... To set a different biasing scheme. |
Tech808
Moderator
Username: Tech808
Post Number: 8522
Registered: 8-2002
| | Posted on Thursday, December 01, 2005 - 12:38 pm: |
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Chad,
I have Corrected my post above to show they are MOSFET Finals.
Now you know why I have always said and posted MANY times that you will NEVER hear me say I know EVERYTHING about ANYTHING as I am always learning and make mistakes just like everyone else.
And I will always be willing to learn from those who are far more knowledgeable than Iam. 
Lon
Tech808
CEF808
N9OSN |
Chad
Advanced Member
Username: Chad
Post Number: 601
Registered: 11-2004
| | Posted on Thursday, December 01, 2005 - 1:19 pm: |
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If we don't make mistakes we would never learn, correct.
Heck you should see a post of mine before I check it! I put words in I never even thought of. I have erratic fingers 
Chad |
Tech291
Moderator
Username: Tech291
Post Number: 310
Registered: 11-2004
| | Posted on Thursday, December 01, 2005 - 8:42 pm: |
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Kid,
the workman device is an exact replacement for the 1969 because it is a repackaged 2sc1969 made for them.Its not new,they released it in the mid 80's shortly after sylvania released their ecg replacement.need to look it up to be sure but think the pn was WEP-767.
tech291
cef#291
kc8zpj
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Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 911
Registered: 9-2004
| | Posted on Thursday, December 01, 2005 - 10:54 pm: |
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thanks for the tip 291, i read someplace else that there was a new replacement on the market. it must have been old information.
i dont trust anyone selling 2SC1969's anymore. not for less than $10.00 apiece anyway.
im hoping that some tech bulletins come out soon about putting the ERF2030 in the 148/2000 chassis, as thats the only reason i havent tried them yet.
so lon, are we correct in assuming that coppper will carry the ERF2030 very soon? if so, i will definitely buy from you guys. will you also have the components that go with them?
matt |
Tech808
Moderator
Username: Tech808
Post Number: 8527
Registered: 8-2002
| | Posted on Thursday, December 01, 2005 - 11:27 pm: |
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Kid_vicious,
YES, Copper will have the  ERF-2030 Mosfets soon.
And there will be 2 different mods for the 148GTL,
MOD #1 ~ Final Transistor Replacement
MOD #2 ~ Driver and Final Transistor Replacement
And YES, Copper will also carry the matching components EN-1250, EN-369DR, EN-369SN that are required for the different conversions for different radios.
Hope this helps,
Lon
Tech808
CEF808
N9OSN |
Coyote
Advanced Member
Username: Coyote
Post Number: 616
Registered: 11-2004
| | Posted on Thursday, December 01, 2005 - 11:55 pm: |
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Hummmm... might have to think about this for the $10 148GTL I got lay'n around. |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 914
Registered: 9-2004
| | Posted on Friday, December 02, 2005 - 12:39 am: |
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very cool lon, i cant wait!
thanks for the info on the mod too!
matt |
Earlybird
New member
Username: Earlybird
Post Number: 8
Registered: 1-2005
| | Posted on Tuesday, January 03, 2006 - 12:17 am: |
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Tech808, have you used this mod in a Galaxy. I did a 29LTD and a DX88.Iam not to happy on the DX88.It did 45W pep and the 29 did 35 pep. Did i not do it right
on the 88 or is that the best it can do.
earlybird CEF-537
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Tech808
Moderator
Username: Tech808
Post Number: 8853
Registered: 8-2002
| | Posted on Tuesday, January 03, 2006 - 12:40 am: |
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Earlybird,
Sorry, but no I have not tried this mod in any galaxy or cobra radios as yet so I cannot be of much help.
All of the information that we have posted here in the Copper Forum on the Modifications is Direct from Eric at EKL Imports.
Hope this helps,
Lon
Tech808
CEF808
N9OSN |
Akbowtie
Junior Member
Username: Akbowtie
Post Number: 35
Registered: 5-2005
| | Posted on Saturday, March 04, 2006 - 8:58 pm: |
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Doing this mod to a Galaxy Saturn Base as we speak, well, type.
Just taking a coffee break |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 1255
Registered: 9-2004
| | Posted on Saturday, March 04, 2006 - 9:36 pm: |
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still waiting for someone to try this with an old style 148/2000gtl chassis,
matt |
Hotwire
Senior Member
Username: Hotwire
Post Number: 1013
Registered: 1-2005
| | Posted on Sunday, March 05, 2006 - 10:29 am: |
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KV I'm waiting and curious too! I asked a local tech if his shop does it. He told me not yet but soon. I'm thinking if done right a Cobra 148\29 with the new final may be able to do 50+ watts. Sound about right? If so I wonder what will have to be done for the extra power requirement? Heavy duty power cords, componets, heat sinks, fans? I have a feeling that this is a bad upgrade to do for just a regular cb if done buy a shop like Earl's Clip'n Snip Shack. 73 |
Im4jc
Intermediate Member
Username: Im4jc
Post Number: 128
Registered: 11-2005
| | Posted on Sunday, March 05, 2006 - 11:36 am: |
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50 watts in a 29 maybe, but a 148? Hmmm, I'm thinking 25 watts. But, if there is a way to run dual finals in the 148/Grant, then I just found my new project!
So, anyone care to enlighten the rookie here? Can I run dual ERF 2030's in my Grant? |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2516
Registered: 7-2004
| | Posted on Sunday, March 05, 2006 - 6:03 pm: |
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i can answer no questions definitively here, so...the cobra 2000 uses a slightly different emitter circuit on the 1969 final then the 148/XL MB8719 radios. unfortunately, i do not have any schematics for the NEW 4 pin china cobras, but the MB8719 148GTL 5 pin & 148GTL ST 4 pin schematics are identical in the area of the 2166 & 1969 driver & final. (to confuse matters more, i have 148GTL schematics showing a 4 pin mic & 148GTL ST schematics showing it with a 5 pin mic  ) HOWEVER, the directions from CB tricks makes PERFECT sense, & fills in all the blanks when you remove, replace & add companion parts on the GTL & ST schematics i have. on the 2000 final-it won't work, there's things missing. anyway back to the NEW 4 pin cobras, i don't have a schematic or one in the heap to compare to an older one. so, if anybody is game & has the erf2030 & associated part-give it a shot & let us know! OR, if somebody can scan & post or email a schematic from a NEW CHINA 4 PIN 148GTL, at least the 2166/1969 & surrounding ares, by all means, DO IT!
next, Im4jc, as for duals in the grant...the TR696fd1 (galaxy 949/959 for that matter) is based on the MB8719 148/XL. the board is very similar, but not eaxctly the same. the ept0696 board was designed with ALL the holes for the export radios, including all the spaces for the 2nd final. your grant of course does not have it. if we are to find out the 5 pin 8719's mod to erf2030's in any way near the same as the 4 pin china 148's, then it would just be a matter of mounting the extra final in a way to give it sufficient heat sinking.
as for earl'slip & snip(hay i KNOW him), you're probably right, 'wire. from a technical standpoint, it appears to be VERY SIMPLE. i have searched the web, & turned up no spec sheet for the erf2030. i suppose a call to eric at ekl is needed here(is he as reachable as other family members?). BUT, going by a post from tech 808 a while back, quoting sam as saying the 257 (or was it mini magnum)required 15 volts to reach maximum output with the new erf2030 final, leads me to believe that most people running a non-adjustable PS, or mobile, at under 14 volts, maybe quite a bit under, are NOT going to see the claimed 25-30 watts. not from being overgenerous as usual, but from lack of voltage to make the transistors work at their peak.
these erf2030's may or may not be a bad thing. as the ONLY replacemant for 1969's, i suppose we need to make them work. if eric(or sam, or 808), can assist in enlightenment as to compatibility with the MB8719 5 pin radios, or mods to make 'em compatible, as well as a real spec sheet, then at least we know where we are & what we are working with. hey, if it takes 15 volts or even a bit more to get FULL POWER/30 watts out of 'em, so be it. if they are just exact output replacements for the 1969 at 12-13 volts, we can work with that, too |
Boxcar
Intermediate Member
Username: Boxcar
Post Number: 382
Registered: 4-2002
| | Posted on Monday, March 06, 2006 - 8:44 pm: |
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Anybody know where I can find that cobra 29ltd classic mods on putting in these finals? I thought I seen it on copper. It has like a pic of where everything goes along with instructions. |
Tech808
Moderator
Username: Tech808
Post Number: 9423
Registered: 8-2002
| | Posted on Monday, March 06, 2006 - 8:51 pm: |
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Boxcar,
Subscriber (Preview)
» Manuals and Service Documents
» ERF2030 29gtl Mod
Hope this helps,
Lon
Tech808
CEF808
N9CEF
CVC#2 |
Hotwire
Senior Member
Username: Hotwire
Post Number: 1028
Registered: 1-2005
| | Posted on Monday, March 06, 2006 - 11:58 pm: |
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Why would a cobra 29 put out more wattage than a cobra 148? Do they not have the same finals? The 29 is a single final radio I sure of it and I know the 148 is a single final radio. I have never owned a 29 or many AM only radios so whats the difference? |
Im4jc
Intermediate Member
Username: Im4jc
Post Number: 129
Registered: 11-2005
| | Posted on Saturday, March 11, 2006 - 10:48 pm: |
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Pat...thanks. I just got back in town and read your reply. I'll wait until someone has done it sucessfully to a Grant and posts the how-to's.
I am extremely interested in doing this to my Grant.
Side note: If you can get 40 watts from an ERF 2030 in a Cobra 29, then if you do the driver replacement can it safely key a solid 10 watts? |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2557
Registered: 7-2004
| | Posted on Sunday, March 12, 2006 - 2:13 pm: |
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can't answer cobra 29 question, Im4jc. not sure if it's the old wishful thinking attitude, or maybe generous meter syndrome that suggests 40 watts from the 30 watt erf2030. they appear to react to voltage feed, as pertaining to output. but not sure how they respond to 'volting' as is done to 2sc2879's. as a generality, when a cobra 29 is COMPLETELY volted(fed at 15-16-18 volts), its AM-only circuitry responds better, & the radio survives somewhat longer then, say a 148. |
Georgeodjungle
Junior Member
Username: Georgeodjungle
Post Number: 47
Registered: 1-2006
| | Posted on Sunday, March 12, 2006 - 5:36 pm: |
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i'm converting every radio i can !!!
but yes the single conversion and am radios put out better.
i don't know about "meter syndrom" but
the 30 watt erfs will do way above that..
just any other final.
the 1969 is only rated @ 12 watts.
but will put out 20, 25.
& get realy hot.
i think it's a 100% duty rating.
ya know like welders. |
Af579
Member
Username: Af579
Post Number: 51
Registered: 6-2003
| | Posted on Saturday, March 18, 2006 - 1:59 am: |
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Anyone done the erf-2030 mod on the 2950dx yet? I can't get more then 10 watts out. I followed the directions to a tee that were posted here somewhere. Maybe I got a bad set of 2030's? humm |
Wankle
Junior Member
Username: Wankle
Post Number: 16
Registered: 5-2003
| | Posted on Saturday, March 18, 2006 - 7:56 am: |
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I got this info at another site and I would like to share it here as well.
ok guys , I installed a mosfet in my cobra 29 ltd classic.
I used a IRF520 which is said to be equivelent to an ERF-2030 and it worked fine.
It has 4 watts deadkey and swings to around 20 watts. I never got around to tuning it yet, i will wait to this weekend. but it appears to work the same as ERF-2030 which a few posters say is a remarked IRF520. I think so also.
I also made my own companion parts EN-1230. |
Chad
Advanced Member
Username: Chad
Post Number: 742
Registered: 11-2004
| | Posted on Saturday, March 18, 2006 - 11:08 pm: |
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The word is out |
Wankle
Junior Member
Username: Wankle
Post Number: 17
Registered: 5-2003
| | Posted on Sunday, March 19, 2006 - 6:35 pm: |
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yes chad the word is out. I also made the companion parts. I can not find any difference between the ERF2030 and the IRF520 as far as power output at least not in the cobra 29ltd i have.
I will try a HyGain 5 next. |
Garyjr
Junior Member
Username: Garyjr
Post Number: 13
Registered: 12-2002
| | Posted on Sunday, April 16, 2006 - 11:41 am: |
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Why would people question people still selling 2sc1969 MIT. finals? Have them send a picture and look at it you can tell if it is a knock off or a original!! |
Gatorade
New member
Username: Gatorade
Post Number: 3
Registered: 4-2006
| | Posted on Friday, April 21, 2006 - 3:28 pm: |
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DOES ANYONE KNOW WHERE I CAN SEND MY GALAXY 77HML TO BE MODIFIED ALSO THE FM MODE WAS DISENABLED WHEN PURCHASED SEVERAL YEARS AGO. |
Tech808
Moderator
Username: Tech808
Post Number: 9798
Registered: 8-2002
| | Posted on Friday, April 21, 2006 - 5:47 pm: |
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Gatorade,
The best thing to do is check with your Local friend's or CBer's and see who they would recommend around your area.
The Mod is listed here in the Copper Forum and all you have to do is print it out and take it with you and any tech near you should have no problem's doing the ERF conversion.
Copper Talk
» Subscriber (Preview)
» Manuals and Service Documents
» AN-2030-3a
Hope this help's,
Lon
Tech808
CEF808
N9CEF
CVC#2 |
Garyjr
Junior Member
Username: Garyjr
Post Number: 14
Registered: 12-2002
| | Posted on Wednesday, April 26, 2006 - 8:39 pm: |
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Heck I still have 2SC1307's 1969's 2312's and More, So why would people question them?! Pictures will tell if they are origional or not!!! and if they look blurrrrrry which I have seen, I wouldn't trust them! With the camera's and scanners they should look like a picture. that is who you will want to buy from plus check the FEEDBACK |
