dawsonjon
supports frequencies
The Si5351 supports frequencies up to 200MHz. Can this receiver be converted into a receiver operating between 0-200MHz?
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...
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?
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.
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.
Here’s the first schematic idea of how the receiver could be used with a 10.7 MHz intermediate frequency.