I believe you need to change the control board to the one that's in the
300A. If you download the 300A manual from the MFJ website, look at Figure
19 which is the control board schematic. It should be possible to add the
changes to your 300 board with a little hacking and bread-boarding.
geo - n4ua
On Fri, Apr 27, 2012 at 10:24 PM, mike stokes <email@example.com> wrote:
> I have an HDR 300 that is South centered. Anybody know how to make it
> North centered ?
> Thanks in advance.
> Mike Stokes
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