[Milsurplus] Anyone ID this antenna Coupling Unit please

[Dave]

Many thanks, Todd, Jeff and Mac for your comments.

  I had intended to reply that I was pretty sure it was not 
homebrew although probably rewired with pvc insulated wire 
at some stage.

However, Todd has come up with the goods on it being part of 
the Collins 30FXC Transmitter. I can only wonder how it 
turned up in Australia.

Many thanks for you help, guys.

Cheers
Dave

On 14/12/2011 3:29 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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