[ARC5] [Milsurplus] Fwd: Re: BC-348 Marine Radio

[Kenneth G. Gordon]

On 23 Mar 2018 at 13:08, Bruce Gentry wrote:

> One consideration of suitable marine radios had no technical basis at all.  Depending on the 
> owner of the ship and the country it is registered in, treaties and laws could specify  the 
> equipment to be used by manufacturer, especially if the shore stations were owned by a radio 
> manufacturer-like RCA. I believe in some cases, the radio operators were provided to the ship 
> line by the communications company.

That was definitely true early on, but I thought it was pretty much gone by WWII or after. 
There were two Radio Officer's unions here in the U.S. which were quite active in the 1960s 
and after, which provided radio operators for all types of ships.

> This could all be quite complex, so using a BC-348, even if 
> it was the very best choice for the situation, could be a problem.  Has anyone noticed the 
> markings on older tubes "Licensed  only to extent listed on carton"?  If an exact same tube was 
> not labeled for use in commercial communications, it was forbidden. I have  doubts any of that 
> sort of thing goes on today, and if it does, I'm sure it is disregarded or violated on at least some 
> vessels.

Yes. I have seen those markings.

Ken W7EKB

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