[ARC5] Re: [Milsurplus] Re: What did they talk to ??

[Bob Wilder]

According to the pilot of "Patches", the B-17 which appears on the 32 cent 
airmail stamp, the radio operator used the BC375 to send the strike report 
right after the plane left the target.  The only time the pilot used the 
command set was during emergencies while in combat.  Otherwise all comm was 
performed by the radio operator.



At 12:31 AM 5/3/2005 -0400, J. Forster wrote:

>This table is essentially the geometric distance to the horizon:  From Google:
>
>A NASA website (http://www-istp.gsfc.nasa.gov/stargaze/Shorizon.htm) 
>describes how to calculate the distance to the
>horizon. Their formula is in metric units, so I have converted it to 
>imperial. It is D = 1.223 x sqrt(h) where h is the
>height in feet. The result D is in miles.
>
>
>1000'         D= 38.6  mi
>10,000       D=122.3  mi
>30,000       D= 211.8  mi
>
>-John
>
>Mike Morrow wrote:
>
> > >Also the question was asked about the max range of the SCR-522 on VHF.
> >
> > Many of the WWII airborne VHF set operating instruction manuals contain 
> a graph of line-of-sight miles vs. aircraft altitude, and that range was 
> pretty much independent of the power output of the transmitters.  The 
> graph that's in the manual for the AN/ARC-4 (AN 08-10-245), for example, 
> gives the following:
> >
> > Altitude (ft)     VHF LOS Range (Statute Miles)
> >
> >   1000                  40
> > 10000                 115
> > 30000                 210
> >
> > Mike / KK5F
>
>
>
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Bob & Carole Wilder
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