[ARC5] BC-230 shock mount height?

[Mike Hanz]

On 4/11/2015 6:40 AM, AKLDGUY . wrote:
> What is the height of the BC-230 shock mounts?
>
> By that I mean the height from the bottom of the FT-100 mounting to the
> bottom of the BC-230 snap-slide brackets.

It depends...:-) By that I mean that there are two different heights 
shown in the drawing in Figure 2 of the manual I posted at 
http://aafradio.org/docs/SCR-AR-183-283_manual.pdf

There is a 1.25" figure from the bottom of the FT-100 to the bottom of 
the mounted transmitter, and a 1.75" from the bottom of the FT-100 to 
the top of the snap slide post.  That one does not make immediate sense, 
as that post is not 1/2" long, and the reference point is not at all 
useful except as a data point of the overall height of a "just out of 
the box FT-100" without anything mounted on it.  I suspect the 
difference is that the weight of the transmitter compresses the mount by 
about a 1/4 inch.  That's pretty close to the measurements on my 
SCR-AE-183 set.

> How rare is the FT-100? Are shock mounts available anywhere?

They used them on a variety of equipment, mostly from the 1930s, but one 
could use a standard small Lord or Barry shock with an extension on it.  
I don't know of any sources for NIB shock units.

> Is it feasible, if the FT-100 cannot be sourced, to fit just the 4 shock
> mounts to a 3mm thick shelf?

Absolutely.  The frame of the mount is 1/16" aluminum.  (I don't know 
what this mm stuff means... :-) )  You can also enlarge your search to a 
Navy GF transmitter mount, which is identical except for the 
nomenclature plate.

73,
Mike  KC4TOS