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Hi Everyone

I hope you are all keeping well during the difficult times attributed to the Covid19 pandemic.

I am slowly updating the files section for my Irwell transceiver so you may notice that some files have disapeared whilst others have been updated.

Today I have updated the files for the Cascode IF amplifier and included printable PCB layouts.

Please also keep an eye on my blog at where I am documenting and providing further information on the Irwell transceiver modules and other projects.

If you are interested in building any of the Irwell transceiver modules I may be able to supply PCB's and some components subject to availability, please submit your request using the contact form that is available on my blog website.

As I update the blog with new Irwell modules I will also update the Groups.IO files section so everything is up to date.

Regards

Andy (G6LBQ)

Hi Andy,

The schematic for the cascode IF amplifier is missing the 47uh value designation for L4 in the schematic. Can you please add that.

Thanks !

Hi Andy,

I forgot to mention that i am also building a general coverage receiver (0 - 30 MHz) of my own and for the AM detector I am using a Si4732 radio receiver chip as an IF processor. It works really great. You may be interested in this approach as it allows you to select variable bandwidths for demodulation. It even supports SSB demodulation.

Also you may like this vendor of crystal filters from the Czech republic and they build custom 8 pole filters with 50 ohm in/out (so no need to match)



I have purchased from them before and they work really great. (a bit pricey though at 120 Euro per filler)

?

The Cascode IF amplifier has been updated to version 2 and I will update the files section for this soon once I have posted information on my blog page.

Regards
Andy (G6LBQ)

Hi berg

Thanks for the information regarding the Czech republic crystal filter supplier and well worth bookmarking for future use.

I have seen projects based on the Si4732 which is an interesting device and a complete radio on a chip, interesting you are using the device purely as an IF processor and I will take a closer look this device.

Good luck with your own receiver build!

Andy (G6LBQ)