• The KM-60 had the sensitivity of the FM-100-B (1.8 uV IHFM) thanks to the Golden Cascode front end.

   It offered slightly better selectivity than the FM-50-B (60 db vs. 55 db) but not as good as the FM-100-B (65 db).

   Its capture ratio was the same as the FM-50-B (2.5 db), not as good as the FM-100-B’s 2.2 db capture ratio since the FM-100-B has an extra IF stage.

  Yet the KM-60 was a bit of an oddball. Like the FM-50-B, it used an EM84 to indicate when an FM station was broadcasting in stereo (Fisher called it Stereo Beam).

   However, it also used a tuning meter which the FM-50-B lacked. The FM-100-B used a lamp to indicate when an FM station was broadcasting in stereo (which Fisher called Stereo Beacon), and a tuning meter.

  The tuning meter of the KM-60 doubled as an alignment indicator to allow the kit builder to align the unit for proper operation.

  Perfect Working condition.

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Condition Description: VG - very good condition, fully functional guaranteed working condition. Fully restored and works great, original vintage American tubes