Copper Talk » Modifications » Radios » Galaxy 959 dual final mod « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Airplane1
New member
Username: Airplane1

Post Number: 1
Registered: 5-2004
Posted on Thursday, May 27, 2004 - 9:54 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi, Any one know where I can get info to add another final to a Galaxy 959?
Also does the Ranger TR-696f mobile have dual finals.
Thanks
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech808
Moderator
Username: Tech808

Post Number: 2506
Registered: 8-2002


Posted on Thursday, May 27, 2004 - 11:04 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Airplane1,

WELCOME TO THE COPPER FORUM!

As for a Dual Final Conversion for the 959 I have not seen any.

It would be cheaper to add a KL-40 or KL-60 to it for more power than doing a dual final converision.

http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodW90-KL40+

http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodW90-KL60+

The TR-696F is a Single Final Radio.

Hope this help's.

Lon
Tech808
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech8541
Moderator
Username: Tech8541

Post Number: 202
Registered: 12-2003
Posted on Thursday, May 27, 2004 - 11:41 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

there is a kit from rci that adds another final to the single final texas rangers and glaxy cb's. i have put a few in and they will give you another 10w. it really isn't worth the time, effort, or money for a 10w increase. at least that is my advice.
Top of pagePrevious messageNext messageBottom of page Link to this message

Airplane1
New member
Username: Airplane1

Post Number: 2
Registered: 5-2004
Posted on Friday, May 28, 2004 - 8:18 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks, That helps. I am just getting back into CBs, I was into them when I was 15 and realy did`nt have the money so dropped it.
Now I have intrest again after digging out my old sears and buying a ps-46kx amp and hooking it up.
I want a good radio and was thinking of galaxy959 or ranger tr-696f mobile.

I just dont know which one I want yet so I`ll ask
about them in this forum. I`m interested in sideband too.


Top of pagePrevious messageNext messageBottom of page Link to this message

Tech8541
Moderator
Username: Tech8541

Post Number: 207
Registered: 12-2003
Posted on Sunday, May 30, 2004 - 12:36 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

these radios use the exact same board, so performance will be the same.
Top of pagePrevious messageNext messageBottom of page Link to this message

Dindin
Intermediate Member
Username: Dindin

Post Number: 137
Registered: 2-2004


Posted on Sunday, May 30, 2004 - 10:09 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Airplane1,this link has enough info on dual final mod that can be applied to the 959 or 696 if you decide to go that route.
http://www.angelfire.com/electronic/cbdoctor/dualfinalconv.html
Incidently I asked about your handle out of a hunch.I've been flying rc aircraft about 16 years.
Top of pagePrevious messageNext messageBottom of page Link to this message

Airplane1
Junior Member
Username: Airplane1

Post Number: 10
Registered: 5-2004
Posted on Monday, May 31, 2004 - 2:44 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Cool Dindin, I have been flying small electrics like park flyers made from old Comet and Guillow kits latly, slow and relaxing and no oil to clean up.
I`ve been flying R/C for about 23 years.

Now I want to get into CBs again and much better equipment this time.

Realy want to try DX but dont know if I can talk like the DXers do.

anyway, Thanks for the link for the dual final mod.

airplane1
Top of pagePrevious messageNext messageBottom of page Link to this message

Cuddlebear
Intermediate Member
Username: Cuddlebear

Post Number: 233
Registered: 3-2002


Posted on Monday, August 16, 2004 - 4:36 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Dindin and Airplane1,

The above link you have specified is for the ept360014B board. A bit different than the 949/959. Actually those radios use the EPT-069610Z board. And yes, I do have a dual final conversion for this radio that has been being worked on. And it works. The following conversion has been done to a Galaxy 949 with good results. Beware, the following info is NOT for the faint of heart gentlemen. If you are unsure of your capabilities in this arena, remember, there are qualified Techs that can do this. It's always cheaper to pay a tech on something like this than to buy a new radio. That being said... Here's your mod for the 949 or most ANY radio using the EPT-069610Z board.

Step1) Q47 One additional 2SC1969C Final with Isolation hardware.
Step2) A heat sink should be bolted to the rear of the chassis after this conversion.
Step3) D91 - 1N4148 diode.
Step4) C209 - 390pf 5% 50wv mica capacitor.
Step5) C212 - 104uf 5% 50wv ceramic capacitor
Step6) R242 - 22ohm 1/8 watt 5% carbon film resistor
Step7) R243 - 150ohm 1/2 watt 5% carbon film resistor
Step8) L34 - 22uh conformal coated choke
Step9) Q47 - 2SC1969 transistor.
Step10)VR11 - 100 variable potentiometer
AM Modulation Limiter R-276

With this mod done you should see a power modifification for between 30-40 Watts PEP.

This conversion has been done to the Texas Ranger 696F/SSB Base station, The DX-949/DX-959.

Enjoy, and good luck folks.





Top of pagePrevious messageNext messageBottom of page Link to this message

Tech548
Moderator
Username: Tech548

Post Number: 241
Registered: 5-2004
Posted on Monday, August 16, 2004 - 1:41 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Airplane1

If you're looking for more power, that's a lot of work for a (if you're lucky) 1/2 S-Unit increase on the receiving end S-Meter.

Get yourself a little KL-300. They are inexpensive to buy from Copper and will mate up very well with your Galaxy-959.

But if you're looking for far more modulation, then go for the dual final modification. Many people have the misconception that dual final radios were made to make you more powerful. They weren't! They were made to deliver more audio.

The reason being, in a single final radio, there is only so much room for the final to carry both RF and modulation. As most of you already know, as you turned the RF power up, the modulation went down. And as you turned the power down, modulation went up. Dual finals remedied that problem once and for all.

If you want to be stronger on the air-waves, get a linear. If you just want to be louder, then dual finals will do it. But remember this...dual finals do not work well with linears. If you will notice, all radios with built-in linears have a "single final" driving their on-board linear...not two finals.

Jeff
Tech548
Top of pagePrevious messageNext messageBottom of page Link to this message

Bruce
Senior Member
Username: Bruce

Post Number: 1476
Registered: 9-2003
Posted on Monday, August 16, 2004 - 3:15 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

???????? VERY INTRESTING ?????????

" The reason being, in a single final radio, there is only so much room for the final to carry both RF and modulation. "

Ok so you go to 2 finals and now you have 200% modulation?
The main reason audio goes down when power goes up is the device is not running linear. Now you go to 2 finals you double your output AND the finals haveing 1/2 the drive each will have more audio since they are still linear.
As for " Dual finals do not work with linears " What about PUSH-PULL amps? that takes 2 ( To Tango )!

MOST HAM RIGS INCLUDING THE ft-747, ft-840 RUN 2 outputs as do most linears. A clasic amp was the 829B tube a dual tedrode good to about 200 mhz. This tube designed in the late 1920's was a mainstay for 100 watt 6, 2 meter amps from the end of WW2 untill transistors came in in the early 70's. The 829b running in cross nulized push-pull needed just a few 10'th of a watt to drive it to 40-70 watts. Again 2 outputs and running linear what you put in you got out only stronger.

Just the way i see things
bruce
Top of pagePrevious messageNext messageBottom of page Link to this message

Cuddlebear
Intermediate Member
Username: Cuddlebear

Post Number: 234
Registered: 3-2002


Posted on Monday, August 16, 2004 - 3:28 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I agree Tech548,

However, I kinda figured I would let him have the info in detail so he knew full well what he was in for so he could make a desicion as to whether he thought it was worth it or not. I found a lot of people change their minds after seeing everything, they go "Holy Batman! This aint worth it!"
Top of pagePrevious messageNext messageBottom of page Link to this message

Dindin
Intermediate Member
Username: Dindin

Post Number: 323
Registered: 2-2004


Posted on Monday, August 16, 2004 - 7:51 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Cuddlebear,I posted that link to show the "challenge factor" or what he would be up against.My couriosity was piced when I noticed the EPT069610 board was designed for dual finals.
Top of pagePrevious messageNext messageBottom of page Link to this message

Cuddlebear
Intermediate Member
Username: Cuddlebear

Post Number: 236
Registered: 3-2002


Posted on Tuesday, August 17, 2004 - 3:40 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Oh ok Dindin,

Sorry, I misunderstood the post. My bad.
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech548
Moderator
Username: Tech548

Post Number: 247
Registered: 5-2004
Posted on Thursday, August 19, 2004 - 12:27 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Cuddlebear

I understood what you were doing my friend. I just added my thoughts to the whole thing.
------------------------------


Bruce

Personally, I don't know of any CB radio that has a RF final section set up anything like a Ham radio. Most Ham rigs that I'm aware of use "low-level audio. These glorified CBs do not. If memory serves me correctly, you and I had a discussion on that subject via E-mail about a year ago.

Anyways, in regards to my above post, I was only trying to explain the reasoning behind the use of two finals in a CB radio....not in a Ham radio. There is just too many "BIG" differences between CB and Ham radios. And there is know way that their circuit designs can be fairly compared.

Jeff.
Top of pagePrevious messageNext messageBottom of page Link to this message

Bruce
Senior Member
Username: Bruce

Post Number: 1486
Registered: 9-2003
Posted on Thursday, August 19, 2004 - 4:48 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Jeff ( and others)..... ALL SSB RADIOS USE LOW LEVEL FOR AM CB OR HAM. Ham radios must be broadband CB sets are not

Now AM ONLY sets are diffrent and DO run highlevel modulation. Since this mode is included on SSB ham radios is will be LOW LEVRL like all SSB sets. There is NO HAM AM SETS to compair to CB since there are NO am ONLY ham radios being made right now.
Bruce

Good OLD AM

\image
Top of pagePrevious messageNext messageBottom of page Link to this message

Bruce
Senior Member
Username: Bruce

Post Number: 1486
Registered: 9-2003
Posted on Thursday, August 19, 2004 - 4:50 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

1966

Top of pagePrevious messageNext messageBottom of page Link to this message

Cuddlebear
Intermediate Member
Username: Cuddlebear

Post Number: 243
Registered: 3-2002


Posted on Thursday, August 19, 2004 - 4:56 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I agree,

It would be like comparing a Ferrari to a Volkswagon in my opinion.
Top of pagePrevious messageNext messageBottom of page Link to this message

Dindin
Intermediate Member
Username: Dindin

Post Number: 333
Registered: 2-2004


Posted on Thursday, August 19, 2004 - 6:19 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

more like a Porsch to a VW
Top of pagePrevious messageNext messageBottom of page Link to this message

Cuddlebear
Intermediate Member
Username: Cuddlebear

Post Number: 245
Registered: 3-2002


Posted on Thursday, August 19, 2004 - 7:43 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

That too

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: