[Collins] Stacking the S-Line

[Dr. Gerald N. Johnson, electrical engineer]

I stack my S-line on wooden shelves in a table rack cabinet. That way I
can raise the lid of the receiver to change crystals in my auxiliary
crystal socket, and can raise the lid of the transmitter to adjust the
VOX controls.

I don't think stacking with the long legs up front is a stable stack,
especially with the heaviest power supply on top the pyramid. I think
just the kids next door running through their house will cause it to
slip and then tumble. And when that power supply hits the radio at the
bottom of the stack, that radio is going to be shortened an inch or two
in height. The cabinets aren't of thick metal either and such a stack
could squash the receiver cabinet even without disaster causing it.

You want the receiver at desk level because you tune it most and its far
more comfortable to be able to rest your fore arm on the desk for
extended tuning periods. Elevating the transmitter with a shelf is
practical because you don't tune it constantly. You might prefer the
312B-4 at the side of the receiver to make it handier to use. The power
supply and speaker need to be in a position where the speaker points at
you rather than over you, but if separated, the power supply can be
anywhere within the length of the cable, even underneath the table...

The receiver audio output tube runs quite warm, though it doesn't
dissipate nearly as many watts as the driver and PA in the transmitter.
That receiver audio tube can sometimes scorch the paint in the cabinet.
(time for a new coupling capacitor replacing the leaky black beauty).

73, Jerry, K0CQ, Technical Advisor to the CRA
-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.