Here is an opened LNB.
Here you can see the two local filters to the two ports.
The Main Mixer and PLL LO seem to be Rafael Micro RT320n
The Mixer and LO and PLL seem to be Rafael Micro RT320n
|Rafael Micro RT320n|
It seem Like the Local Crystal is 25Mhz
|Crystal is 25Mhz|
What this mean if I change the LO Crystal frequency I should be able to force the IF to the required Output to ether on 70cm 435Mhz or 2M 145Mhz
I have created a Spreadsheet to calculate the required IF frequencies so you can listen to QO-100 on the required Ham band.
I did some calculations and the LO to Crystal frequency = LO / 390
see calculated values
|Blue / Red is crystal frequency for your LO in LNB|