"Brian Howie" wrote in message
...
My FT560 has a tunable IF of 5.520 to 6.020MHz IF is
3.180MHz -sidebands would be the wrong way round .

http://www.radiomanual.info/schemi/FTdx560_user.pdf

Interesting, for I had always understood the Sommerkamp 747 to be a rebadged
FTDX560, but it's tunable IF / VFO coverage / transverter Xtals are 300 kHz
different***** and it did not have the noise blanker option. Otherwise, a
piecemeal
examination of the 560's cct diagram against the 747's cct diagram to hand
here
makes then appear to be identical.

***** Thus giving the 60m coverage and so making the gratuitous abuser
from a certain quarter look to be a babbling fool.