[GreenKeys] Re: GB> WTD: DX-100 Manual and knob

Sat, 17 Jan 2004 21:00:29 -0700

That's interesting....   because I have a dx 100b and my cabinet is the 
gray one...
never seen one with the green apache style cabinet....
ray  wa7itz

Glen Zook wrote:

>Heath only made the DX-100 and the DX-100B.  The
>primary difference between the DX-100 and the DX-100B
>were as follows:
>
>The DX-100B used the "Apache" style green cabinet
>rather than the larger two-tone gray of the DX-100B
>
>The DX-100B only had one crystal control postition
>instead of the four crystals in the DX-100.
>
>There were two or three components changed in the
>DX-100B in one of the 12BY7 stages (I believe that
>these were resistor values).
>
>The DX-100B used the 3-section variable capacitor for
>the antenna loading instead of the 50 pf variable and
>fixed switchable capacitors of the DX-100.
>
>The back of the DX-100B chassis was pre-punched to add
>the necessary connectors for conversion to allow the
>SB-10 SSB adapter to be used.
>
>The panel of the DX-100B said DX-100B and the panel of
>the DX-100 said DX-100!
>
>Now, Heath had a field conversion kit for the DX-100
>that changed the loading capacitors from the small
>variable plus fixed capacitors to the 3-section
>variable.  Transmitters thus modified were known as
>the DX-100A.  That is why Heath's next version was the
>DX-100B and not the DX-100A
>
>Both transmitters were often field modified with
>another Heath conversion kit to add a VFO "spotting"
>switch and to convert the keying to reduce the chances
>of "chirping".  However, this modification allowed the
>VFO to run constantly whenever the transmit switch was
>in the "on" position.  Also, it added several
>capacitors to "shape" the CW signal.
>
>Heath also had available a kit to modify both the
>DX-100 and the DX-100B to use the SB-10 SSB adapter. 
>The DX-100B had the holes to mount the SO-239
>connectors already punched whereas in the DX-100 you
>had to drill the holes.  This kit added a switch to
>the front panel for the purpose of switching the SB-10
>in an out of the circuit.
>
>My original DX-100 that I bought used in 1960 had the
>"A" modification made.  I installed the VFO spotting
>switch modification.  The DX-100 that I own now I had
>to do the same thing with the spotting switch but it
>also had been modified to the "A" configuration.
>
>Some people changed the cabinet of their DX-100 to the
>slightly smaller DX-100B version.  This had been done
>on my 2nd DX-100.  Fortunately, I was able to find an
>original DX-100 cabinet to restore it to the original
>configuration.
>
>Glen, K9STH
>
>  
>--- Merz Donald S <[email protected]> wrote:
>
>I need a DX-100 manual copy. But weren't there
>different versions of this TX? Are the differences
>such that I need to make sure the manual I get matches
>the version I have? How do I tell which version I
>have?
>
>
>=====
>Glen, K9STH
>
>Web sites
>
>http://home.comcast.net/~k9sth
>http://home.comcast.net/~zcomco
>
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