[R-390] SSB-Modified R-390A

federico [email protected]
Thu, 10 Jul 2003 14:12:15 +0100


Hi Jim and friends,
                   very interesting. I agree with you that a MOD done (well 
done) by factory or from Army Lab can add value to the receiver in the same 
way of some strange contracts (for example I have a 51J-4 manufactured from 
Collins for Yougoslavian Press Agency TANJUG silkscreened in yougoslavian 
language). Can you put on the web (or send by mail) a photo of your R-
390A/URR for a better evaluatiun.

73 de Federico IZ1FID

 
On Thu, 10 Jul 2003 08:30:40 -0400, Jim DiMauro wrote
> Hi All:
> 
> I have a Collins-made R-390A S/N 756 from the very first contract
> 
> (14214-PH-51).  It was modified to add SSB capability.  The BFO 
> switch was changed from the "Off-On" to "LO-UP-AM-BFO" and the dial 
> lock was removed and replaced with a "VFO Vernier" control.  The mod 
> was very nicely done and works well, with screened lettering on the 
> front panel, and there are no immediately obvious circuit additions 
> from looking at the top of the chassis.  I don't know exactly what 
> type of mod was done, but it's certainly not a typical hack job 
> normally assosciated with military radio conversions by amateurs.
> 
> I have three questions: where can I find a list and descriptions of known
> SSB
> conversions for the '390A so I can identify the mod?  Also, were 
> there commercial conversions done by/for the government?  This radio 
> came from an estate which included equipment from a US Army 
> experimental SSB station AN/GRC-108 XC-1, so perhaps this radio was 
> modified for the Army and not by a ham. Finally, does a 
> "professional" SSB conversion add to or lessen the radio's value?  I 
> guess it depends on the type of mod and who did it, but some 
> thoughts along those lines would be appreciated.
> 
> Thanx & 73,
> Jim
> WA2MER
> 
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