Larry, Although I prefer the Heathkitshop board, for the AC3, I would go with the Hayseed Hamfest caps for the following reasons.
First, the AC3 has a test point on that the AC4 does not and the Heathkitshop board does not account for. That test point is the absolute easiest way to set the finals bias current on a rig. I modified my Heathkit shop board to accommodate this test point with my AC4. Second is that the AC3 does not have a cover. That means that with the Heathkit shop board, you have exposed voltages on the top of the chassis. I personally prefer the Heathkitshop board, but it was designed for the AC4. It is your call, but if you do use the board on an AC3, please make some type of cover, or make other accommodations for safety. Death is permanent. 73, Ron WD8SBB --- On Sat, 3/10/12, K3VX <[email protected]> wrote: From: K3VX <[email protected]> Subject: [Drakelist] AC3 vs AC4 To: [email protected] Date: Saturday, March 10, 2012, 10:40 AM I have an AC-4 but the documentation that came with the T4-X is for the AC3. All the electrolytic caps have to be replaced as well as some other parts. Differences between the models?? Also sources for the caps? Thanks for any help you can give. Larry K3VX, VP2MVX, 8P9VX -----Inline Attachment Follows----- _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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