[Milsurplus] Anyone ID this antenna Coupling Unit please

[mac]

Sure looks like that's where it started life.  What put me off were  
the miss-matched countersunk screws on the front panel and lack of any  
labeling (painted over maybe).

Dennis D.  W7QHO
Glendale, CA

***************
On Dec 13, 2011, at 9:29 AM, Todd, KA1KAQ wrote:

> Found it. Looks to be from a 1936 Collins 30FXC transmitter.
>
> Here's an old photo of one online at the CCA site:
>
> http://www.collinsradio.org/html/30fxc.html
>
> And a description of the recessed meters:
>
> "Two RF ammeters at the top were recessed from the front panel to
> reduce shunt capacity across the transmission line for more efficient
> operation at 30 MHz."
>
> That picture isn't great and it lacks the tag, likely due to it being
> an original prototype/pre-sales photo. This one from an original
> brochure shows the tag placement:
>
> http://rockwellcollinsmuseum.org/products/advertisements/30FXC_QST_feb1936_large.jpg
>
> Not sure what you intend to do with it, but if you're contemplating
> using it for parts it might be worth listing it for sale first. These
> transmitters are pretty scarce and there may be someone out there in
> need of the tuning network. They used oddball tubes resulting in later
> conversions or parting out for many.
>
> ~ Todd,  KA1KAQ/4
>
>
>
> On Mon, Dec 12, 2011 at 4:58 PM, Dave <davprin1 at optusnet.com.au>  
> wrote:
>> Hello all,
>>
>> Wondering if someone can identify the unit in the below
>> photos, please.
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