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Author Topic: CCI EB104 Amplifier Kit Question  (Read 4189 times)
N4KJ
Member

Posts: 8




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« on: November 23, 2009, 07:49:34 AM »

I’ve just finished the CCI EB104 amplifier project using their pre-wound transformers and have a quick question for the group. Before I bias this thing up, I’d like a sanity check on the wiring for T2.

Looking down onto the finished PCB with T3 at the top, I have T2 place so that its wire exit each side.  The wire colors they use are Yellow (short winding), and Orange and Red (two other longer windings).

The colors I have down the right side of T2 are from top to bottom:  Orange, yellow, red.
The colors I have down the left side of T2 are from top to bottom:  Red, yellow, orange

Can anyone who has built an EB104 check me on this?

Thanks and 73
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K8AI
Member

Posts: 58




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« Reply #1 on: November 24, 2009, 11:27:50 AM »

Maybe you could check with some of the folks on this thread:

http://www.eham.net/forums/Amplifiers/4297

Just curious, how much does CCI want for the kit?
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PE1KL
Member

Posts: 2




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« Reply #2 on: December 20, 2009, 09:02:58 AM »

Hi,

Have a look to this site with a lot off pictures.
http://www.k6if.com/gallery2/main.php?g2_itemId=1768

It was nice help for me to soldering the parts.

'73

Kees

PE1KL
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N4KJ
Member

Posts: 8




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« Reply #3 on: December 25, 2009, 01:26:47 PM »

Kees:

Thanks for the steer.  I had the wiring correct, but the photos you suggested are a really good source of "sanity checking" your build.  My amplifoer is working fine now, except for poping a decoupling cap (C14).  Replacing it with a good higher voltage, better dielectric capacitor solved that issue.  Also taming the parasitics were a bit of an issue.  A few ferrites in the right places fixed that.

Thanks for all the interest in my issues.

Regards
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PE1KL
Member

Posts: 2




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« Reply #4 on: February 02, 2010, 03:56:25 AM »

Jerry,

Can you give me some details about the ferrite you placed on the board, to prevent oscillation.

'73

Kees
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9A2QP
Member

Posts: 4




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« Reply #5 on: March 04, 2011, 04:39:39 AM »

Hello has made some experience with PA EB104 to work at 50MHz with regard to the written documentation only from 1.8-30MHz
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K8AXW
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Posts: 3827




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« Reply #6 on: March 04, 2011, 09:23:56 AM »

I have several EB-104 components that I would like to sell.  I have decided NOT to build this amp.  Getting too old and impatient.

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9A2QP
Member

Posts: 4




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« Reply #7 on: March 05, 2011, 03:44:19 PM »

What components and what price
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