I have been the beneficiary of a stroke of luck.... or maybe it was just a stroke.
The Radio Shack part#274-710 CAN be used to provide power to a 510 atty. It appears to be fairly sturdy and it should be possible to use other attys as well with one caveat:
The atty should be unpainted.
If I can get the photos to upload I'll show the entire setup. It's surprisingly elementary.
Here is the complete sequence showing the 510 atty (5th from left) and in the foreground is the center post from an RCA plug which is needed to connect power to the center terminal after it is all assembled. You can literally assemble it as shown.

BUT! There are a few details you will need to take care of first.
You MUST drill or ream out the cap slightly so the atty will fit.

These prongs must be bent out a bit so they will allow the atty to slide inside them.

This is how they will look during assembly.

The white plastic housing must have a post installed to make electrical contact with the atty. In this case I chopped off a piece of paperclip. You will want to insert the RCA centerpost to get the right depth of insertion for the paperclip or whatever you use, then cut it longer than necessary and trial fit the atty to make sure it isn't too long or short. This is probably the hardest step. The small screw will lock it in place. You will also want to cut a substantial groove down the side of this housing to let air by. I didn't and everything went together so tight that it wouldn't draw.

Here's the trial fitting in progress... if the system will let me load more photos. I'm sure there's a limit.
Oops... 5 photo limit. More to come.
The Radio Shack part#274-710 CAN be used to provide power to a 510 atty. It appears to be fairly sturdy and it should be possible to use other attys as well with one caveat:
The atty should be unpainted.
If I can get the photos to upload I'll show the entire setup. It's surprisingly elementary.
Here is the complete sequence showing the 510 atty (5th from left) and in the foreground is the center post from an RCA plug which is needed to connect power to the center terminal after it is all assembled. You can literally assemble it as shown.

BUT! There are a few details you will need to take care of first.
You MUST drill or ream out the cap slightly so the atty will fit.

These prongs must be bent out a bit so they will allow the atty to slide inside them.

This is how they will look during assembly.

The white plastic housing must have a post installed to make electrical contact with the atty. In this case I chopped off a piece of paperclip. You will want to insert the RCA centerpost to get the right depth of insertion for the paperclip or whatever you use, then cut it longer than necessary and trial fit the atty to make sure it isn't too long or short. This is probably the hardest step. The small screw will lock it in place. You will also want to cut a substantial groove down the side of this housing to let air by. I didn't and everything went together so tight that it wouldn't draw.

Here's the trial fitting in progress... if the system will let me load more photos. I'm sure there's a limit.
Oops... 5 photo limit. More to come.
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