[Premium-Rx] WJ-8711/HF-1000 Versions

[David Allaway]

Is anyone aware of a published correlation between S/N, or date of manufacture, or firmware version, and features on the WJ-8711(A) and HF-1000(A) receivers? 

I’ve made a start at it, based on the Premium-RX archives and info from W-J.  Any corrections, additions, or individual data points would be appreciated.  To avoid list clutter, you may also use: n2xb at yahoo.com 

Regards,
Dave Allaway N2XB
　
Internal Control EPROM (A2U12)
Release Date     Version   Summary

May 1991         1.00      Original version WJ-8711. Six AM bandwidths
                           (others on request). Released with DSP 1.00
December 1991    1.20      Additional remote commands, BITE improvements,
                           no preamp below 500 kHz, preamp/attn in memory,
                           non-SSB bandwidth saved when switching modes,
                           gain value display. Released with DSP 1.20
February 1992    1.21      Improved BITE
May 1992         1.30      Additional remote commands
June 1992        1.40      Pre-selector option, unit and version display on
                           power-up
July 1992        1.41      Remote command enhancements
November 1993    03.00.00  DSP enhancements, up to 66 user-selectable AM
                           bandwidths, adds tunable IF notch. WJ-8711A and
                           HF-1000 original versions. Released with DSP
                           03.00.01. Note: HF-1000 with 8 kHz IF roofing
                           filter as standard, and <1.0 PPM (vs. <0.7).
January 1994     03.01.00  IEEE-488 and PCSM support, improved CSMA
~1994            03.02.00  Released with DSP 04.02.01
April 1994       04.00.00  Synchronous AM, medium AGC, configurable AGC
                           decay times, manual AGC threshold
August 1994      04.01.00  SSB bandwidths up to 4.0 kHz, manual gain in
                           channel memory, RS-485 and RS-422 support
~1994            04.01.01  Released with DSP 04.02.03 
December 1994    04.01.02  Speech Enhancement Unit support (turns off SEU
                           in BITE and ISB modes)
~1995            04.01.03  Fixes notch filter in SSB > 3.2 kHz IF. Released
                           with DSP 04.02.05. Last version supported by
                           control board 797012.
~1995            04.01.04  No functional changes. Supported by control
                           board 797214. HF-1000A original version[?]
November 1995    04.01.05  CSMA fixes
~1996            04.01.06  Released with DSP 04.02.06
~1996 or 1997    04.01.08  n/a
~1997            04.01.09  Released with DSP 04.02.07
~1999            04.01.10  Final version (also with DSP 04.02.07)

DSP EPROM (A2U56)
Release Date     Version   Summary

May 1991         1.00      Original version
December 1991    1.20      Increased EPROM from 32K to 48K
November 1993    03.00.01  Required for Internal Control version 03.00.00
                           (DSP enhancements and extended bandwidths)
December 1993    04.00.00  Functionally equivalent to DSP 03.00.01
~1994            04.02.01  n/a
~1994            04.02.03  n/a
~1995            04.02.05  n/a
~1996            04.02.06  n/a 
~1997            04.02.07  Final version

May 1995         05.00.00  Adds FSK mode (factory request). Receivers with
                           standard pre-selector, high-stability and FSK
                           mode are designated as WJ-8711A-3.