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February 10th 04, 10:27 AM

(Mike Andrews) wrote:

: In .com (rec.radio.amateur.homebrew), Dave wrote:
:
: What sort of plate caps were used? There are just pins, and
: it looks almost as if there would have been a ceramic gizmo
: like a tube socket to have bridged the two of them....
:
: On the transmitter for the AN/ARC-3, the plate leads just had push-on
: clips with a little bit of spring-loading, much like the contacts in a
: tube socket.

In the RSGB Amateur Radio Handbook 3rd Ed. they went so far (full
construction details) as to give details of a drilled and tapped (for grub
screw) 3/4" x 5/16" brass rod, for QQV06-40 / 5894 (has thicker pins)!

You might consider using the brass inserts from terminal connector blocks,
which already have grub screws and come in at least a couple of sizes.

Since the anode tank circuits then often used flexible copper strip to
possibly more brass rod in these British circuits, a bit of heat-sinking
would be taking place as well, I think. May as well use a heavy contact.

The 829B needs external neutralising, unlike 5894 with it built-in.

I could scan the few pages of the 1947 ARRL I have showing 829B, but you
might want to find the few years following for more, maybe improved ones.