[Collins] {Z476.3.6 Scanned} Collins Digest, Vol 64, Issue 9

[Dr. Gerald N. Johnson]

On Thu, 2009-08-20 at 11:46 -0700, Kevin Greene wrote:
> Hi:
> 
> Does anyone have any document on the Collins 490T-3 Coupler? I do have a
> manual on the 490T-4 but it is a bit different. The 490T-4 was really a
> line flattener and the 490T-3 was for actually coupling with an
> unbalanced antenna directly. I am now the proud owner of a the 490T-3
> and it appears to be in very good shape.

Surplus Sales has operator's and maintenance manuals, but it you have to
ask the price, you can't afford their price.

It might have a military counterpart with US gov manuals on line
somewhere, though google didn't turn up any in the US.

I was thinking tuners like it were described in the official SSB book by
Pappenfoose, Bruene, and Shoenecke, but I can't find my first edition to
see.
> 
> I know it is designed for a 1 KW continuous mode and also requires 115
> VAC/400 Hz. It also requires at least 200 watts to provide effective tuning.
> 
> Any help would be great.
> 
> Thanks.
> 
> Kevin
> 
> PS: If you have any information on the Collins DC to AC inverter - model
> 426T (), it would be great.
> 
> 

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer