[Boatanchors] FS:B&K Model 500 Dyna-Quick Mutual Transconductance tube tester

[Charlie Hugg]

FS:B&K Model 500 Dyna-Quick Mutual Transconductance tube tester with 510
expansion module. This tube tester does not work correctly. It turn on and
lights up, but the meter read backward. The cabinet has some worn and tear
spots in the cover cloth. I cleaned it up and put some conditioner on the
cabinet cover. It looks pretty good. .Pictures are available. The panel is
in great shape and shows hardly any wear. This is probably the easiest tube
tester in the world to use. There are only two control settings, the
filament voltage and sensitivity. . Included is a tube data chart and a copy
of the manual. There are several You-Tube videos one an easy calibration of
this model tube tester, but I think it needs more than calibration. Price is
$40 plus shipping. Thanks, Charlie Hugg, K5MBX