[Amps] why not 3-500Z

[W0UN -- John Brosnahan]

At 02:00 PM 10/3/2005, John T. M. Lyles wrote:
>Amperex/Covimag tubes continue to be distributed by Richardson
>Electronics, but I heard through the grapevine that they no longer
>'own' the Covimag facility as a captive supplier. One can inquire for
>a 3-400Z/8163 from REL, but the price would be steep if they had new,
>and even so with NOS. It doesn't make sense to beat the bushes for
>that tube when a 3-500Z would probably work in the same socket with
>minor adjustments.
>
>73
>John


I seem to recall that the 3-500Z is very slightly taller than the 3-400Z.
In the case of the Loudenboomer, after Radio Industries was sold to
Hallicrafters, the anode did not really have enough clearance with the
top cover to run the 3-500Z.

--John  W0UN