[SENT] ATM Using RTV for Secondary H

[PFAFF2@delphi.com]

>> 
> In your post of Aug 2 you comment on using RTV to mold a secondary
> heater.  I had been planning on using the polyester batting in my 3.1"
> secondary holder to hold the heater wire against the back of my
> secondary, but I like your idea of using RTV to hold the wire in place.
> Would appreciate hearing more about how you do this, as well as comments
> from others regarding pros/cons of this approach.
> 
> I assume I just run 12vdc through the wire and I'll be fine, or is there
> more to it than that?  Also, would appreciate suggestions for heating my
> Telrad.
> 
> David Brooks
> Seattle WA
> 
I made a loop of resistors and laid the loop on the back side of my secondary.
I then but a dab of RTV on the resister wires between each resister.
High temp RTV was used but I do think normal RTV would work just as well.
If dew starts to form I just plug the resistor loop into 12 volts
and the dew is cleared in a few min. See Sky and Tel June 1995 p. 48
if you need help with figuring out what size resistors to use.

Works fine  last long time
Bob Pfaff