[Milsurplus] BC-348 Marine Radio

[Bob kb8tq]

Hi

The same “limited license” certainly still exist on a number of devices. If you want to use a 
semiconductor in a heart pacemaker …. that isn’t covered under the “standard license”. 
There are other similar restrictions on a variety of parts. 

Bob

> On Mar 23, 2018, at 1:08 PM, Bruce Gentry <ka2ivy at verizon.net> wrote:
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> 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. 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.
> 
>     Bruce Gentry, KA2IVY 
> 
> On 3/22/18 11:11 PM, Hubert Miller wrote:
>>  
>> While doing a Google search for something this evening I came across a photo of a BC-348 receiver installed in the radio shack on the freighter "Madison Lloyd", launched in 1962. Over the years there has been frequent discussion on this list regarding airborne direction finders converted for marine use, usually on fishing boats and other coastal craft. In this instance, the BC-348 is installed on a seagoing freighter in a radio shack with plenty of modern (for the day) equipment. The BC-348 has obviously been reworked a bit (repainted and knobs changed) but it still seems odd that it was being installed along with modern equipment 20+ years after it was designed.
>> 
>> Here's a link to the photo:  https://www.flickr.com/photos/33402600@N02/8568021523/in/album-72157633026069092/ <https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.flickr.com%2Fphotos%2F33402600%40N02%2F8568021523%2Fin%2Falbum-72157633026069092%2F&data=02%7C01%7C%7C35535037ff134eb20b2308d59062ab0f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636573675803332337&sdata=AwZLfkcEtAa4I8E97p4K52ftxxDabBOuv8F8BN7iwHU%3D&reserved=0>
>> Any comments? Any other instances of this?
>> 
>> Stay tuned.
>> 
>> Tom
>> 
>> 
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