supports frequencies

[d3gan]

The Si5351 supports frequencies up to 200MHz.
Can this receiver be converted into a receiver operating between 0-200MHz?

[dawsonjon]

Probably the best way to get into the VHF bands is to use a second mixer and down-converter. The third oscillator output on the 5351 might be ideal for this...

[Dakumas]

Great project, I'm very grateful to you. Would it be possible to add the option for second mixer using the third oscillator output on the si5351?

[dawsonjon]

Hi, yes it's definitely on my to-do list, would like to have a play around with VHF. It would probably be tricky to maintain compatibility so will most likely be an experimental branch/variant.

[Dakumas]

Hi, I’ve made a small prototype using the AD607 chip, with a 10.7 MHz frequency filter. The AD607 includes a Tayloe detector and operates from 3–5 V. After the IF stage, I used schematic the "SI4735 all-mode receiver circuit by LZ1PPL". So, it would be possible to adjust the schematic and assemble a prototype with AD607 or AD831.

[Dakumas]

Here’s the first schematic idea of how the receiver could be used with a 10.7 MHz intermediate frequency.

[dawsonjon]

That's pretty cool!