[Milsurplus] [Boatanchors] Need Navy "DU" Loop Antenna Docs

[Michael Hanz]

Sorry - that should be pages 122 through 137.

On 10/6/2018 6:33 PM, Michael Hanz wrote:
> Hi Al,
>
> Try 
> http://aafradio.org/docs/1936_NRL_Aircraft_Radio_Training_Manual_DF_Chapter.pdf 
>
>
> About halfway down (page 122 through 125), there is a discussion about 
> the RDF-1-A, which seems to essentially be the early DU. The vacuum 
> tube is a Navy 38233 (RK-33), which became a type 1642.  I have an 
> extra if you need one.  I acquired an L-1130-A DF unit from the 
> RDF-1-A system that appears identical to the DU, but had to make a new 
> tube cover for it on the lathe because it was MIA.  Photo attached.
>
>           73,
>  - Mike  KC4TOS
>
> On 10/6/2018 5:43 PM, Al Klase wrote:
>> Subject says it all.  I have the DU-1 manual, but there are some 
>> important differences.  The big one, what vacuum tube is used?  DU-1 
>> used 2 12SK7's but this uses a single 7 big-pin with plate cap.
>> Any help appreciated.