[Collins] Assembly part numbers

[Dr. Gerald N. Johnson]

I have a Collins overhaul manual on the 490T-9.
It uses A1 757-3421-003 electrical equipment chassis.
A2 528-0465-00 Antenna coupler control.
A3 775-4276-00 Electronic control amplifier.
A4 528-0524-00 or 777-3508-001 Variable RF stepping coil.
A5 528-0525-00 RF series coil.
A6 527-0526-00 RF shunt coil.
A7 528-0466-00 or 777-4500-001 Capacitor tuning drive.
A8 528-0468-00 Loading=phasing discriminator.
A9 761-6205-00 Rotary switch (series capacitor).
A10 761-6204-00 Capacitor assembly.

Up front it says its a drop in replacement for a 180L-3/3A. It is all in 
one in a commercial ATR short case. This manual is T.O. 12R2-4-92-13F 
and is about 1-1/8" thick, pages numbered 1 to 1182 though there aren't 
100 pages to each section and the section number is the first or first 
and second digit of the page number.

The CU-523 is one module of the tuner for an ARC-58 which the manual 
shows the discriminator module is bolted to the CU-523 but the 
C1940/ARC58 control module is a separate box. The 490T-9 has a wider 
range of antennas it will match.

The manual I have for the ARC-58 is in two sections, one is field 
maintenance and the other is overhaul. Totals about 2 inches of paper.

It shows the 180R-8 is preferred for pressurized operation and it uses a 
309A-3 control module.

The ARC-58 manual in binder weighs 5.05# and the 490T-9 in binder weighs 
3.86 pounds.

I don't appear to have anything on the ARC-75.

My list of TOs from June 21, 2012 is:
> TOs:
> 12R-2-4-92-13
> 12R-2-2-122
> 12R-2-2AIC13-2
> 12R-1-2ARA25-1
> 12R-1-2ARA15-3
> 12R-2-2ARC-133
> 12R-2-2ARC65-2
> 12R-2-2ASQ19-2
> 12R-2-2ASQ19-32
> 12R-2-2ASQ19-102
> 12R-2-2ARC58-2
> 12R-2-2ARC27-42CL1
> 12R-2-ARC33-2
> 12R-2-4-42-4
> 12R-2-4-62-12

I think the ARC27 manual is gone. The binders are dusty and my tags 
haven't stayed with them.

I'm open to offers, shipping will be significant on these manual but 
they are originals. I'm not at all interested in making copies. And I'd 
rather keep them together than to split out the CU-523 portion of the 
ARC-58 manual.

73, Jerry, K0CQ, Technical adviser to the Collins Radio Association

On 2/14/2014 11:48 PM, antqradio at sbcglobal.net wrote:
> I've done a little more research on the 'net.  It seems that:
> CU-523
> CU-749
> 180R-6
> 490B-1
> are all the same coupler.  Does anyone have a manual on any of the above for rent, sale or lend?
> Jim
>
>
> ________________________________
>   From: "antqradio at sbcglobal.net"<antqradio at sbcglobal.net>
> To: "collins at mailman.qth.net"<collins at mailman.qth.net>
> Sent: Sunday, February 2, 2014 12:26 PM
> Subject: [Collins] Assembly part numbers
>
>
> It appears that Collins assigned new part numbers to modules and components when an assembly was reissued under a new designation.  I have been collecting components for the ARC-58 system.  So far, the antenna coupler and controller have eluded me but I have found the TRC-75 units on eBay.  I am short by one connector for the CU-523 so interconnect cables are getting close to the assembly stage.
>
> So the questions I have are:
> Is the C-1940/ARC-58 equivalent to the C-2848/TRC-75?
>
> Likewise, is the CU-523/ARC-58 equivalent to the CU-749/TRC-75?
>
> Does anyone have the pin outs of the TRC-75 controller and antenna coupler?  A wiring schematic would be appreciated.
> TIA,
> Jim
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