[ARC5] WTB : ATD Tuning Unit

[Mike Morrow]

The TUs in your unit are supplied with the basic ATD.

The CRR-47211 is not supplied.  The CRR-47207 200-540 kHz TU is not supplied either, which is odd since the antenna coil for that range is supplied.  It is odd that the 540-1500 kHz TU is supplied standard instead of the nominally more useful 200-540 kHz TU.

The CRR-47207 is not too hard to find...but not all that easy either.

Mike / KK5F

-----Original Message-----

>My Instruction Book says “Preliminary Copy – To be replaced by Final Copy”
>Contract NOs – 73237 20 May 1940.
>
>There is an asterisk next to the 9-18.5 Mc Tuning Unit ( as well as the 200
>– 540 Kc Tuning Unit) that reads “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”
>
>FYI, my ATD has a 540 to 1500 Kc and 1500 Kc to 3000 Kc Tuning units, and a
>pair of 3000 Kc to 9050 Kc tuning units.   Were these 4 units standard
>delivery?