[ARC5] FT-230A panel adapter...not

[WA5CAB at cs.com]

The three converters that I was vaguely remembering are the CUO-46212 
(47-215 MC), CUO-46213 (200-545 MC) and CUO-46214 (535-704 MC.I had to track down 
the manual for the details.  The MF receiver specified or or specifically 
mentioned in the manual is the 46145 equipped with the 62036 adapter.  The 
trio (which from the front look vaguely like three Command receivers cut off 
at about the center IF transformer) are mounted in a shock mount rack that 
looks nothing like a triple receiver rack.  They are normally operated from a 
dry battery box but any one at a time can be run off of the 46145.  Each has 
a 140 ohm dropping resistor for when they are powered from the receiver.  
Nominal center output frequency is 1000 to 1200 KC (for plus or minus QRM 
from BCB stations).  The converter outputs are all tied together at the 
receiver antenna post.

AN/ARC-5 is not mentioned, but the Contract date is June 5, 1943.

There may have been an earlier version, too, as on page 16 (only) they are 
referred to as CUO-46205, 46206 and 46207.

The converters all use a single 955 oscillator-mixer.  Strange circuit  The 
antenna connector goes to the heater positive terminal in the 46212 and 
46213.  And to the heater and the cathode in the 46213.

They were made by General Electronic Industries, Div. of Auto-Ordnance 
Corp. in Greenwich, CN.  Several sources show CUO as McGuire Industries.

I have never seen any of the units, either in person or in catalogs.  Nor 
have I ever heard of anyone mentioning them.  

In a message dated 07/15/2016 06:37:44 AM Central Daylight Time, 
aaf-radio-1 at aafradio.org writes: 
> It's a good bet.  The R-24/ARC-5 broadcast band receiver is the only 
> receiver I have ever seen the MX-20 installed on.  (Along with the ARA 
> (CBY-46145) and BC-946 versions of the adapter.)
> 
> What are the three other converters, Robert?  I have a tickle of such a 
> memory but I'm coming up blank.
> 
>  - Mike  KC4TOS
> 
> On 7/15/2016 2:35 AM, WA5CAB--- via ARC5 wrote:
> 
> >> That or the ZB-2, ZB-3 or AN/ARR-1 until the AN/ARR-2 could replace 
>> them.  And there was a group of three converters that I've never seen an 
>> actual example of.
>> 
>> In a message dated 07/14/2016 23:15:26 PM Central Daylight Time, 
>> cjack93907 at razzolink.com writes: 
>> >>> I also have a couple of the MX-20 aux power adapters.  Any idea what 
>>> these
>>> were used for?  Maybe to power the LM frequency meters?
>>> Dave, WA4OBJ
>>  
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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