Re: Alexander AK
> > To the best of my knowledge there were fourteen Type-I/J 2-PSI non-tapered tower sites:Original building & tower were built in late 1966 - early 1967; see:
> > TD3 field trial - "unitized" building/tower:
> > Alexander Arkansas - Main Station
> This site has some other features I noticed....
> Tower built in 1988; that strikes me as late -- when did the move to glass kick in? But I see Alexander on older maps....
>The 1988 date may reference the 75' tower extension to improve propagation reliability - Alexander, Tucker, and W Helena received these extensions...
> A smaller J atop the big J.
> A building addition that's a story taller than the original, in effect shadowing the tower in that direction.The second story is actually the HVAC mezzanine; part of the original construction - again see the above BSTJ papers. Both Alexander and Arkabutla main stations are the same...
>How about Alexander:
> BTW, saw a different name/address for initial contact:
> JANE VAUGHAN
> 1200 PEACHTREE ST FLOC15W27
> ATLANTA , GA 30309
> but later it changed to the familiar Ms. Pamela Cheeks...
> These are the two best shots I have found:
W Helena - 87'6" Type-J supporting a 125' extension - gives you an idea of how robust the Type-J design actually was:
Arkabutla - photos by Blake Bowers and others:
See also extensive photo coverage of Arkbutla by Ashley and Company on Flickr:
Thanks Blake - wa -
- Good catch - nice term project for a CE grad student but probably not sufficient for a dissertation. At 1/16 scale the model horns were about 15-1/4" tall...
Minor observation: The pyramidal horn dimensions in Fig. A1 p85 are at odds with KS15676 dimensions given in BSP 402-421-400 Fig. 1 (Fig. 1 is in the KS15676 photo album). To wit: (when was the last time you heard someone say that?) - Fig. A1 shows the horn 1-15/16" taller than the BSP. Lest you think that's no big deal, it's almost 2/3 wavelength at 3,950-MHz. Either the BSP is in error, or someone made a mistake in Fig. A1 of the CSU wind study - whaddya think?
- wa -
> I found a paper on horn windloading, done by CSU for RC&R, and L-L.
> I suggest that Albert may wish to add it to our attic.
> I also found a worksheet on Sayerville's loads.