HW-101 - Putting it on Three Megs!

Paul K. Dean wb9hgz at CHARLOTTESVILLE.NET
Wed Dec 9 06:54:28 EST 1998


I did a very similar thing some years ago with an SB-310 receiver.  Wanted
to change the 26.9 mhz "CB" band to 10 meter coverage.  Calculated the
proper crystal frequency, ordered it from International Crystal. Installed
and went through the alignemnt for that band.  Bingo!  10 meter reception!

At 12:18 AM 12/9/98 UTC, you wrote:
>Hi Greenies!
>
>   Found the following information while cleaning up my 'un-organized'
>mess:
>
>  A rather simple modification, involving a change of the heterodyne
>crystal, realignment of coils and addition of a padder capacitor to the
>"final tank circuit", has enabled operation of the HW-101 on 3 MHZ
>frequencies.
>  A crystal purchased from the International Crystal Co. with a frequency
>of 11,895 MHZ replaces the standard 12.395 MHZ crystal, giving coverage
>of 3.0 to 3.5 MHZ rather than the standard 3.5 to 4.0 MHZ.  A run through
>the alignment procedure in the standard instruction book for the HW-101
>gave good reception and plenty of RF drive, but the final take circuit
>would not resonate.
>
>[[Above article by George Phillips/NNN0OEE, then from NC, but now I
>believe resides in AL]].
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