[Drake] T4X sticking relay

[Garey Barrell]

Rick -

I have notes at home from Bill Frost re: using the "standard" 2.5k relay to
replace the 15k version.  Apparently Drake had problems with the 15k relays
because of the small physical wire size.

I will be home tomorrow night and will get you the information.  There is
also a variation from the 6EV7, and since that tube's filament is part of a
parallel/series string in the T-4(any) it requires a resistor to change.  I
have that informtion also, just not with me!

73, Garey - K4OAH

----- Original Message -----
From: "Rick Wells (W2RW)" <W2RW@frontiernet.net>


> The coil in my T4XC relay went open some years but I have never been able
to
> find a replacement.  It had a 15k ohm coil.  Had to replace it with a unit
> with somewhere around a 2500 ohm coil and it has since never been reliable
> with pull in and drop out.  I believe this is due to the higher current it
> draws through the triode switching circuit.  6EV7 maybe if I recall?
>
> 73,
> Rick, W2RW
>
>