[Milsurplus] R-388/51J use

[Jim Haynes]

On Sat, 26 May 2012, C.Whitaker wrote:

> de WB2CPN
> I suppose you all know that Art Collins and
> General Curtis LeMay were close friends.
> Arthur Godfrey was part of the trio.
> That's howcome SAC started using SSB
> instead of AM.   There was a live test of
> both modes on a B-36, SSB won hands down.

And General Electric with John Costas was at the same
time competing with double sideband suppressed carrier
AM.  Although DSBSC takes twice the bandwidth of SSB it
has certain advantages, such as you can recover the
carrier precisely from the signal without having to approximate
it with a local BFO; and the signals from the two sidebands
add coherently, increasing the SNR.  But Collins and SSB won.

Except that for some reason the AF decided to convert their old
ARC-21 AM radios to SSB rather than buying new SSB ones. The
result was the ARC-65.