Hello Marco,
Did you bought it as a simple/old 857 or a 857/d or what else? The only interesting info I see on the label is that your one is "FCC approved" while mine is "CE".
I bought this radio used as a FT857D.
I wonder if there is a Tech menu on these units that can give us more info. Looking on the mods.dk site, there might be but I used up view for the day: http://www.mods.dk/view.php?ArticleId=2731
Uploaded Description 28-10-2011 Fix for FT?]857/?]897: S9 crashes in receiver, with or without antenna attached. http://www.mods.dk/view.php?ArticleId=4841 05-07-2010 LDG AT100 Y-ACC cable for FT-857 and FT-897 http://www.mods.dk/view.php?ArticleId=4625 29-06-2010 Ground connection for FT-857. http://www.mods.dk/view.php?ArticleId=4622 06-12-2009 Wide banding the FT-817 857 897 by CAT interface. http://www.mods.dk/view.php?ArticleId=4480 06-12-2009 FT-857 (D) Allignment settings http://www.mods.dk/view.php?ArticleId=4478 11-11-2008 CAT Interface / Programmer for FT-857D http://www.mods.dk/view.php?ArticleId=4242 08-11-2008 Flashing Display for Yaesu FT-857D http://www.mods.dk/view.php?ArticleId=4240 05-11-2007 Keying the SB200 Amplifier http://www.mods.dk/view.php?ArticleId=3970 16-08-2007 Wideband ESSB filter modification for FT-857D and FT-897D http://www.mods.dk/view.php?ArticleId=3914 20-11-2006 FT897/857 TX Extention 40m Band and ARS by Software http://www.mods.dk/view.php?ArticleId=3648 19-11-2006 Bad reception on one or several bands. http://www.mods.dk/view.php?ArticleId=3646 23-09-2006 Key click modification for FT857D http://www.mods.dk/view.php?ArticleId=3601 20-09-2006 Issues with the Yaesu FT857D http://www.mods.dk/view.php?ArticleId=3598 08-04-2006 CAT cable for Yaesu http://www.mods.dk/view.php?ArticleId=3468 23-01-2006 Changing the RF-Driver Transistors FT-857, FT-897 http://www.mods.dk/view.php?ArticleId=3336 12-06-2005 FT857 and FT857D low frequency response in SSB http://www.mods.dk/view.php?ArticleId=3195 20-03-2005 40m band expansion for 7.1mhz to 7.2mhz transmit for FT-857 http://www.mods.dk/view.php?ArticleId=3156 03-02-2005 TX Power Mod for Yaesu FT857(D) http://www.mods.dk/view.php?ArticleId=3135 23-01-2005 Yaesu FT-857/897 FM-Squelch Fix http://www.mods.dk/view.php?ArticleId=3130 15-08-2004 FT-857 Undocumented Feature http://www.mods.dk/view.php?ArticleId=3054 31-12-2003 FT-857 Mic wiring http://www.mods.dk/view.php?ArticleId=2913 21-12-2003 Adding drag to FT-857's tuning knob http://www.mods.dk/view.php?ArticleId=2897 23-11-2003 FT-857 European FM Settings http://www.mods.dk/view.php?ArticleId=2869 09-08-2003 FT897/857/817 Jumpers by Software http://www.mods.dk/view.php?ArticleId=2805 23-04-2003 Second menu for FT-857 http://www.mods.dk/view.php?ArticleId=2731 06-04-2003 Installing The FT-857 Options http://www.mods.dk/view.php?ArticleId=2719 06-04-2003 MARS mod of the FT-857 http://www.mods.dk/view.php?ArticleId=2717
--David