[R-390] R-390 Slugs

[chacuff]

Tony,

Yes the R-390 slugs are unique...not only to the to the R-390 (as opposed to 
the "A") but to the individual slug racks in the RF deck.  As I remember 
there is a colored dot on each slug and it should be noted where that color 
is positioned in the RF deck upon disassembly.  I have one open in the shop 
and will have to take a look again to verify this or answer any additional 
questions.

I can't speak to the suitability of the 392 slugs since I have never owned 
one of those.

Cecil
K5DL
----- Original Message ----- 
From: "Anthony Casorso" <canthony15 at msn.com>
To: <r-390 at mailman.qth.net>
Sent: Tuesday, January 17, 2012 1:22 PM
Subject: [R-390] R-390 Slugs


>
> I have read some archive material and the Collins engineering report on 
> the 390A. From what I have read I have garnered the fact that the 390a RF 
> deck uses exactly two slug types, one for the VIF and one for the RF 
> transformers. These slugs are made from ferrite. That is indisputable 
> because it is so written in the Collins report. Also written in that 
> report is that the 390 used iron powder slugs. But what I can't tell for a 
> fact from anything is exactly which slugs are unique in the R-390. What is 
> the collective knowledge about the R-390 RF deck slugs?
> I took a peek at some R-392 slugs last night and it appears that there are 
> several types and they don't look to me like ferrite. Historically 
> speaking, it makes sense to me that the 392 slugs would be more like the 
> 390 slugs.
> The questions arise because a post on another forum is asking for 
> replacement slugs for a 390 but he is not sure what he needs (I think the 
> deck was torn down by someone else and some slugs are missing).
> Do we know for sure which slugs are unique in the 390? Do we know if the 
> 392 slugs are equivalent to the 390 slugs (I have some 392 slugs in my 
> junk box)? Unfortunately I do not own a 390 so I can't do any experiments 
> of my own.
> Thanks,
> Tony
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