[ARC5] SCR-274N transmitter mod.

[Neil]

> The ARRL promoted a crystal control technique for novices
> that required building a 6AG7 crystal osc on a separate small chassis
> and plugging it into the 1626 socket.  Power and filament was derived
> from that same socket.  After the novice upgrades to general, the 1626
> returns home and the transmitter is once again stock, VFO controlled.

This mod appears in the ARRL Handbook, 1963 Edition, if anyone's
interested. Probably appears in several other editions of that era, but
the '63 is the only one I have.

73 de Neil ZL1ANM