[Heathkit] Dx100 and 100B difference
Bill Cromwell
wrcromwell at gmail.com
Sun Sep 25 11:07:46 EDT 2016
Thanks Glen,
I have DX-100 (non 'A', non 'B'). I thought the B model also had support
for the SSB adapter like the Apache has. I won't concern myself with
acquiring 'B' model parts to add that to my archaic one. Mine is best
used on CW and the update plans have fallen from the back burner onto
the floor behind the stove anyway.
-crossing all of that off the speculative project list-
73,
Bill KU8H
On 09/24/2016 04:10 PM, Glen Zook via Heathkit wrote:
> The DX-100B came with the continuously variable antenna loading whereas the DX-100 had fixed capacitors switched with a much smaller variable capacitor. Heath came out with a modification kit for the original DX-100 to change to the completely variable loading. DX-100 transmitters such modified were sometimes called a DX-100A.
>
>
> The DX-100B has only 1-crystal position and that is activated by a slide switch accessible through the door in the top of the cabinet. The DX-100 had 4-crystal positions that were switched from the front panel.
>
>
> There were 3-capacitor values changed (minor differences) in the 10-meter section of the 5763 driver stage. This was done to increase drive on the 10-meter band. There was an article in QST giving details on changing those capacitors in the original DX-100 transmitters.
>
>
> Otherwise, electrically the same.
>
> Glen, K9STH Website: http://k9sth.net
>
> From: "w5sum at comcast.net" <w5sum at comcast.net>
> To: heathkit at mailman.qth.net
> Sent: Saturday, September 24, 2016 2:01 PM
> Subject: [Heathkit] Dx100 and 100B difference
>
> Can anyone tell me what the difference was between the DX100 and the DX100B besides the cabinet?
>
> Thanks
>
>
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