In article ,
"Pete KE9OA" wrote:

They are both very good sounding receivers. Both of them sound very similar,
with the HF-150 sounding slightly better. Sensitivity is about the same,
with the R30 having better dynamic range. Whereas the selectivity in the
Lowe receivers is obtained through the use of more inexpensive Murata CFWS
6-element ladder filters, the R30 uses either high grade 11-element filters
or mechanical filters. The exception is the SSB bandwidth; both of the
receivers use 11-element filters.
The Lowe receivers use a 45 to 75MHz VCO for the synthesizer while the R30
uses a 360 to 600MHz VCO and divides it by 8 to obtain the 45 to 75MHz LO.
The advantage here is that the phase noise is divided down by the division
factor.

Snip

Hi Pete. Nice post as usual from you on the technical aspects of radio
receivers.

I don't understand how dividing down a synthesized clock by itself
reduces the phase noise unless the divider is filter for the phase noise?

--
Telamon
Ventura, California