[TenTec] Titan 425

[Joe L Blackwell]

I can't find any voltage/current specs in the Titan 425 manual.  I key
the 425 using positive keying from the Heathkit HD-1410 which keying
circuit is a darlington pair of MPSA42s.  Heathkit says this circuit will
key no more than ~10ma since it is a constant current sink.  I also key
the 425 with a keyboard circuit from QST June 1992.  Can't find this
circuit right away.  Not much help, but good luck on your keying circuit.
73,
Joe, aa4nn

On Wed, 08 May 2002 18:30:01 -0500 Matt Erickson <kk5dr@ev1.net> writes:
> Hi Ten-Teccers,
> I just came on board of this reflector as I am soon to have a Titan 425
in my shack.  In preparation of the > new amp, I would like to know what
the keying voltage & currents are?
> I plan to build a keying interface to run the amp with my PRO II.
> I need a little info on the unit before I start building it.
> 
> 73 de Matt KK5DR
>