[AMRadio] RE: GB> Difference between Heathkit DX-100 and DX-100B?

Ed Sieb esieb at sympatico.ca
Mon Jun 4 15:12:43 EDT 2007

The basic design of the two transmitters is identical, except for the
following differences:

The case is the more streamlined "Apache" styled case, painted Grey Wrinkle,
instead of glossy green.

The loading control is changed from a stepped  switched cap control, to a
variable control using a variable capacitor. The loading range however is
diminished from 25 - 600 ohms to 25 - 100 ohms

The DX-100B incorporated the same functionality for the SB-10, as the
Apache: it has the RF input and RF output jacks on the back, and one of the
front panel  controls, has the SSB-AM switch incorporated.

There are some very minor changes to bias, and high-voltage circuits, but
these  are minimal.
Hope that helps.


Joe Tyburczy wrote:
A local ham is restoring a DX-100B and after searching for
information, I became curious. Does anyone know what the difference
between the DX-100 and DX-100B is?

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