PGXL Intermittent Reconnect Issue (FYI – my fix)

My Flex setup consists of a Flex-6700 & -6600 (using latest 3.x firmware), Maestro, TGXL tuner, PGXL amp, and 4O3A 8x2 Antenna Genius switch. For several years, I’ve experienced following momentary PGXL message that appears on both front panel screen and PC app: “Reconnecting…”.  The disconnect/reconnect time only takes a few seconds, and has resulted in CW or SSB QSO interruptions only a few times.  It almost always occurs when PGXL is idling in either standby or operate mode, and occurs randomly about every 10-20 minutes.  None of my other Flex equipment appears to experience this issue.  I use the Maestro (not PC) for SSDR with my mic, keyer, speakers, & headphone connected directly to Flex radios -- only connections to Maestro are network cable and power.

All Flex-associated-equipment network connections (including PC), were connected to a Flex-dedicated Gigabit ethernet switch, which connects to a tp-link AX11000K router.  Network latency values, shown on Maestro, are very low (typically 1ms).  Swapping cables, ethernet switch, and router (all Gigabit-speed types), did not resolve the issue.  I also added pairs of DX Engineering ISO PLUS RF Filters to each network cable, and changed to shielded network cables. Also tried using various tp-link, Linksys, and Netgear Gigabit ethernet switches, with 8 or 16-ports.  All these actions neither reduced or eliminated PGXL reconnects.

The FIX:  I changed the Flex-dedicated ethernet switch to a slower speed model.  I now use a tp-link TL-SF1016DS(V4) unmanaged 10/100 ethernet switch ($49 from B&H Photo).  Now, the TGXL, PGXL, & Antenna Genius PC apps are no longer fussy about the order in which they are powered-ON and they respond faster. Sorry so long winded... hope this might help someone.