Yaesu FT-690R

The FT-690R is very similar to the FT-290R, but it also supports AM (instead of USB). This makes the receive IF a bit more interesting. There's also an AM modulator (Q2006) on the pre-pre-driver Q2019.

FT-290

FT-690

For the rest, the only differences are in the PLL frequencies and all the tuned circuitry of course.

Frequency   Local Oscillator VCO       difference  Divider 

 50.000      58.8100          60.8100   2.00         200
 53.999      58.8199          64.8099   5.99         599
144.000     131.1900         133.1900   2.00         200
147.999     131.1999         137.1899   5.99         599

• The 'Mighty-Wide' Six Metre Dipole