Kay Electric Co. "Kilo-Sweep"

[Opcom]

It being bitterly cold, I dug into a stack of old gear and started repairing.

I would like to find a manual for a Kay Electric "Kilo-Sweep". ser.#21595

The Kilo-Sweep is a swept oscillator covering 0-2MHz with a sweep width of 0-100KC. It has markers at 436, 445, 449, 455, 461, and 474 KC. The reason for wanting it fixed ought to be obvious, with those markers!

Each marker crystal frequency is actually X_KHZ+10MHz and each xtal has its own switch, but it is odd that there appears to be only one somewhat complicated marker oscillator circuit that includes two 10 MHz crystals. I do not see yet how it can run all the markers with one oscillator. I am sure the two 10MHz crystals have something to do with the generation of the various KHZ-range marker signals.

This is a blue-grey rackmount instument about 6u high, supplied with its own rack-case. Full of tubes, maybe 23 of them or so.

After replacing the rotten power cord with a new one and replacing two 1.0uF 200V wax caps, two 12AT7's, and one 12AU7, it has wheezed to life again. Interestingly the two 12AT7's were cracked severely at the base. Perhaps bad caps and overheating, or what? Pity, were the Amperex "bugle tube" ones..

The oscillator seems stable and the sweep function works.

The marker oscillator does not work and the "pip generator" output does not seem to work. I am not sure what a pip generator does. Perhaps it makes a pulse as the oscillator sweeps through a marker frequency? I am guessing.

If anyone is familiar with this, I'd be interested in learning more.

(There is also a KAY Rada-Sweep somewhere around here too)

[Opcom]

pics.. Nice instrument. I wrote Kay-Pentax and they are graciously trying to help me determine which model I have.
There is no model # on it, but it has to be one of model # 130, 131 or 132. I sent the pics and the numbers off the power xfmr as those might be a part #.