[ARC5] 4 pin to 7/9 adapter update

[Ben Hall]

Hi Jim and list,

On 11/2/2014 6:14 PM, Jim Wiley wrote:
> Congratulations on your progress so far.

Thanks much.  I've been having a lot of fun working on it.

 > Assuming that you can
> successfully negotiate with small job manufacturers for the "pins" and
> PC boards, will you be considering making available similar items for
> old style 5, 6 and 7 pin bases as well?

Absolutely.  Once I've got the 4-pin variety working, it shouldn't take 
much work to modify the design for 5, 6, and 7 pin bases.  (assuming the 
pins are also 0.125" and 0.156" in diameter - if they are different, it 
will be more of a challenge)

> That could go along way toward
> helping those who are trying go get old sets going, but are frustrated
> by non-availability of the tubes themselves.

That's my goal - get more of these cool old units on the air.  :)

> One additional comment:  Consider making a connection point available
> that could be used to simulate a grid-cap.  That is to say, a solder pad
> where a wire could come from the base of a more modern tube up and
> around the side of the tube to make the grid connection.

Hhmmmn.  If I understand correctly, the goal would be to replace a tube 
with a grid-cap with a more modern tube without a grid cap.  Is that 
correct?  I'll see if I can figure out a way to do this.

Thanks much for the comments and the ideas!

thanks much,
ben