[R-390] Dittmore- Freimuth 390-A - Information wanted

[Llgpt1@aol.com]

In a message dated 7/11/2003 4:20:22 PM Central Daylight Time, 
jrg.dk3ng@t-online.de writes:

> Among the three 390s I own is a Dittmore-Freimuth, Serial# 55, Contract 
> DAAB05-68-C-0040
> 
> It is unusual in that it has a five digit seven-segment LED frequency 
> readout mounted in place of the mechanical V-R counter. The first two digits (tens 
> and unit Megahertz) are not driven by the electronic counter but appear to 
> merely represent a voltage derived from a multi-turn potentiometer mechanically 
> coupled to the range switch. The counter is encapsulated in a small metal 
> box mounted directly to the front panel in the position normally occupied by 
> the V-R counter mechanism. The orginal black counter cover to the front panel 
> has been retained. 
> 
> The whole affair seems to have been purpose designed and has a professional 
> appearance.
> 
> I have heard rumours of a small batch of Dittmore-Freimuth receivers having 
> been fitted with electronic counters under a special order but have never 
> seen a report of an actual sighting.
> 
> Anyone able to shed some light on this mystery, thank you very much in 
> advance.
> 
> J R Groeger
> DK3NG, EL0AA/MM, G4XXW
> 
> 

All the 1968 Dittmore-Freimuth Corp. R-390A's were manufactured by EAC, the 
mechanical filters were manufactured by Dittmore.

Look here      <A HREF="http://www.r-390a.net/faq-var.htm">http://www.r-390a.net/faq-var.htm</A>


For more info on your variant.

Les


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