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Thu Feb 21 15:38:05 EST 2013
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------=0A=0ADate: Thu, 10 Jul 2003 23:24:49 -0700=0AFrom: David Ross <ross@=
hypertools.com>=0ASubject: Re: [R-390] SSB-Modified R-390A=0A=0ADoes this d=
escribe the LSB-USB-AM-CW mod for the R-390A?=0A=0A"Mounted on a small L-br=
acket chassis, it consisted of circuitry featuring a 6U8 tube with two crys=
tals and a USB/LSB selector switch. The original BFO switch was removed and=
the new assembly installed in it's place.=A0 A short cable fit into an 8-p=
in connector added near the front of the IF deck for power and signal outpu=
t.=A0 The front panel was refinished, repainted and silk screened with new =
lettering for the USB/LSB switch"=0A=0A=A0 This is from the February 2003 i=
ssue of Electric Radio, page 32, article titled "Dick Walser Remembered".=
=A0 Dick is apparently the fellow who came up with this SSB mod.=A0 The art=
icle mentions Dick's company, Airborne Electronics and further states: "In =
all, Airborne remanufactured about one thousand R-390As.=A0 A large number =
of them were shipped to radio dealers in the (Los Angeles/North Hollywood) =
area.=A0 Not all of them went to the dealers.=A0 Todd Shipyards purchased t=
en radios that were to be installed in five destroyer escorts being built i=
n the 1970's, and in the 1980's a mysterious Japanese entrepreneur purchase=
d twenty R-390A's for his well-heeled clients in Tokyo.=A0 Most of their re=
built radios were shipped to well-known 3-letter Government agencies.=A0 So=
me were shipped to countries in South America. R-390As that were under cont=
ract to Columbia Electronics received a new nameplate that reflected 'Colum=
bia Electronics' as the manufacturer."=A0
Columbia Electronics does show up as an R-390A manufacturer on an R-390A F=
AQ at: =0A=A0=A0=A0 http://www.r-390a.net/faq-manuf.htm=0A-----------------=
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----------------=0AFrom: Llgpt1 at aol.com=0ADate: Sat, 19 Jul 2003 21:19:11 E=
DT=0ASubject: Re: [R-390] SSB Conversion Photos=0A=0AThat is basically the =
same conversion as pictured in Paolo Viappiani's R-390 =0A- R-390A Handbook=
. The Schematic is printed in it also, schematic is in English, noted as an=
EAC conversion.=0A--------------------------------------------------------=
----------------------------------------------------=0AFrom: "federico" <fe=
derico at dottorbaldi.it>=0ADate: Mon, 21 Jul 2003 22:04:17 +0100=0ASubject: [=
R-390] SSB Conversion Scheme=0A=0AHi to all friends, I succeed to put the s=
cheme of SSB EAC Mod, please follow the link : www.dottorbaldi.it/militaryr=
adio; and there you shall find the scheme and some photo of my shack.=A0 Le=
t me know if there are any problem.=0A-------------------------------------=
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