24 GHz

 This is one band I have never tried. Like 10 GHz , there are Doppler radar modules that could be "repurposed" for WBFM (wideband FM) on this frequency. I have not searched for 24 GHz WBFM, but I am sure circuits must exist.

See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/24ghz .

24GHz WBFM

This is a band I have never tried. Some people take it very seriously and employ narrowband techniques. Others "play" at the band using wideband FM (WBFM), much as is done with 10GHz. 

There are Doppler radar modules available which look as if they could be used at 24GHz. With such units there is almost no need for microwave engineering. 

With such units at the focus of dishes, ranges could be surprising. I have never seen designs for 24GHz WBFM units. If you find any, please send me links. 

Ranges of a few kilometres might be possible with just the modules alone.

See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/24ghz .

24GHz wideband FM

Quite a few people have got active on 10GHz WBFM using very low cost HB100 Doppler radar modules. 

I see that similar units are available for 24GHz. although I am not sure if these are suitable for WBFM or how they can be moved in frequency, if necessary.  

They are available from Amazon, but suspect they would be  even lower cost on eBay.

See https://www.amazon.co.uk/CDM324-Induction-Channel-Microwave-Intelligent/dp/B07G152FDC/ref=psdc_1338197031_t3_B075QCPNBP .

24GHz handheld

Well, I missed this at first, but am mightily impressed!

This was spotted on Amateur Radio Weekly, but it first appeared on a blog in Spain. Can you believe it? A 24GHz handheld! What some manage just astounds me.

See ea4eoz.blogspot.co.uk/2012/10/24ghz-old-way.html?utm_source=amateur-radio-weekly&utm_medium=email&utm_campaign=newsletter