[R-390] Dittmore Freimuth Filters:

[rbethman]

Frank,

It would appear you have what we refer to as a "Depot Dawg".  This is 
NOT to say that there is anything inherently wrong with it.  It simply 
means that during its lifetime, many modules were swapped around in the 
interest of keeping the old gal up and running.

The IF Deck, does it have trimmer caps available through the top of the 
filter can?  It sounds like it "may" be a pretty early Collins one.  The 
earliest ones do NOT have trimmers.

Enjoy the radio, go through it and tweak it up, first paying attention 
to the tubes,, then an alignment!

Bob - N0DGN

Frank Donnelly wrote:
> Good morning All;
>     I don't post much, But read most of your posts. What a wealth of 
> knowledge and
> helpful members.
> I have just come into possession of a Dittmore Freimuth  R-390A
> Upon initial inspection I found the following:
> 1.  The IF deck "DAAB05-68-C-0040"  Has a set of Collins filters in it. 
> S/n 34.
>      Did DF  put out an R-390A's with Collins filters?
>      I read some where that some of the early ones did have them.
>      All the wiring around the filters looks Original. Very nice 
> Professional wiring and soldering.
>      So I don't think anyone swapped them out.
>
> 2. The IF,  2nd Osc, RF decks are the same 1968 contract number.
>
> 3. The Audio and PS deck are the 1967 EAC contract. "FR-36-039-N-6-0155
>
> 4. The front name plate and the rear chassis are the same 1968 contract 
> number.
>
> Being that It has Collins filters, my question is:
> Do I really have an actual Dittmore Freimuth receiver?
>
> It receives on all bands "Weakly"  I intend to restore it, but want to 
> find out what I really have.
> Hope someone can tell me a little more about it.
>
> 73  Frank Donnelly   KI0RQ
>   

-- 
Bob - NØDGN