[ARC5] BC-230 / -430 "Four Pin Tube Bases" Not Needed.

[Ben Hall]

On 10/13/2014 12:50 PM, David Stinson wrote:
> Thanks for writing, Ben.

Hi Dave and list,

Thanks much for continuing your research and sharing it will all of us. 
  It is *much* appreciated.  :)

(note:  I've done some snipping of the original post.)

> All 6AQ5s or all 5763s.

Awesome!  I'll need to check my inventory and get cracking on doing the 
same.

The retaining rings look to me to be crying out to be used in some 
fashion to mount the 6AQ5's / 5763's.  Lead length may present a problem 
however.  That may also be an issue with a 4-pin socket.

For those who mentioned 'nanner plugs...the small pins on a 4-pin socket 
measure 0.124", so a mini-'nanner that is 0.120" in diameter may just 
work.  The fatter pins measure 0.155", and the Keystone catalog shows a 
0.175" plug...so a regular-'nanner plug may be too big.

I will do some playing around with a possible PCB layout as I get time.

> Seem to do fine.  If you want to work AM, the bias needs
> a little adjusting.  Still investigating the best way to do that.

AM would be my preference.  CW requires a level of quiet and 
concentration not easily achieved around this house.  (8 year son, 
mother-in-law, cats, dog, etc...)

When I get my set up and running, perhaps I can lend what little 
brainpower I have to that investigation.  ;)

thanks much and 73,
ben, kd5byb