Yes, the location of the ANT TRIM control at the middle right side of the front panel means it is either an R-390/URR or R-391/URR, and not an R-390A/URR. Jim's information about the CHANNEL switch at the middle left side of the front panel seals the R-391/URR identification. Good job, Jim!
Too bad there are no R-389/URR sets in the mix. :-)
I'm a fan of the significantly improved and simplified R-390A/URR.
Mike / KK5F
-----Original Message-----
From: Michael Hanz <aaf-radio-1@aafradio.org>
Sent: Sep 8, 2022 4:48 PM
To: Jim Whartenby <old_radio@aol.com>, milsurplus@mailman.qth.net <milsurplus@mailman.qth.net>
Subject: Re: [Milsurplus] Can anyone ID these Aussie HF Intercept Receivers (used in Vietnam)
Sure looks like it, Jim. I don't think I've ever seen an R-391 until you mentioned it.
- Mike
On 9/8/2022 4:34 PM, Jim Whartenby via Milsurplus wrote:
Looking at the second operator from the right, there appears to be a cluster of four knobs just below the LINE meter. That fourth knob would be the CHANNEL SELECTOR which would make the radios R-391s.
Jim
-----Original Message-----
From: Tom B <tbryan@nova.org>
To: milsurplus@mailman.qth.net
Sent: Thu, Sep 8, 2022 1:43 pm
Subject: Re: [Milsurplus] Can anyone ID these Aussie HF Intercept Receivers (used in Vietnam)
The photo looks strange but they they are all R-390 or R-390A. There is something mounted above them. Maybe a TTY demodulator. I am not sure.
Tom
On 9/8/2022 2:10 PM, Brian Harrison wrote:
(the gent at email address below didn’t know specifics)