[Milsurplus] Looking for ATD tuning unit

[mac]

My 1940 Bendix "Preliminary" manual,  lists the 200 - 400 and 9050 -  
15,800 Kcs tuning units and the 200 - 500 Kcs Antenna Tuning Unit   
with the following caveat:

  "Quantity of these units shipped with each transmitter unit subject  
to Navy requirements and orders.  Information on these units is  
included in this instruction book in
the event that these units are made available to the service at some  
subsequent date."

The manual also helpfully points out that "additional equipment (not  
supplied under the contract) will be required for the satisfactory  
operation on the Model ATD
Aircraft Transmitting Equipment."  A  list follows including " 1 -  
Receiver" and "1 - Trailing Wire Antenna up to 200 feet in length"  
among other items.

The designers oddly used large numbers of 2 watt composition resistors  
in various series and parallel configurations in the transmitter as  
opposed to smaller numbers
of higher wattage WW units. (Component shortages maybe?)  Found most  
of these 60 year old units to be FAR out of tolerance in my ATD.

I have an extra dynamotor, contact me off line if interested.

Dennis D.  W7QHO
Glendale, CA