My Airband

JP1ODJ

https://sdr.hu/?q=air-band

Also in Russia.
http://air.swl.su:8073/

Please add a wideband FM.
I want to publish FM broadcasts.

n6gn

I don't think it is possible with the kiwiSDR without redesigning the whole receiver, is it? The stock kiwiSDR has 12 kHz information bandwidth, the 3 rx version can do 20 kHz in each channel. If you want true wideband FM, you need an information bandwidth on the order of 200 kHz. As far as I know, this simply is not available.

JP1ODJ

That's right.
Wide FM gives up.

G8JNJ

I think your best option is to use Openwebrx running on a Raspberry Pi with something like an Airspy or SDR Play.

https://github.com/simonyiszk/openwebrx/wiki

Regards,

Martin - G8JNJ

jks

The Kiwi was designed to be a shortwave receiver. Wideband FM is not part of that design.

The only way to possibly do it is to add a WBFM demodulator to the FPGA so that only audio is being moved across the serial interface to the Beagle. But that also means adding passband filtering to the FPGA. And for the RX4WF4 configuration at least there is no room on the FPGA for that.

Lonecrow

That is sooo cool. (The russian setup) as its exactly what I was trying to do before my converter died on the first weekend. Only difference is I can pick up literally 100 different channels being used at any one time in this area.

JP1ODJ

http://jp1odj-air.proxy.kiwisdr.com:8073

bagmouse7

JP1ODJ, nice!
What hardware are you using to do this?
Thanks

JP1ODJ

bagmouse7

WOW! Fantastic!

I have been wondering if I could use something like this MixNV, to downconvert and send the airband to the KiwiSDR.

https://windfreaktech.com/product/rf-mixer-downconverter-upconverter/?_vsrefdom=adwords&gclid=CjwKCAiA35rxBRAWEiwADqB377RNNBMTepQY_ajBG2B6S43cR-cOGf_iGEQ1rrYLOOkWPSdxoD5NvhoCkr8QAvD_BwE

I think it may work...

Also, thanks for the GREAT diagram of your hardware setup. Makes perfect sense (and I wish I had the Leader LG3236)!
Thanks.

JP1ODJ

There is an affordable SG and Mixer.
http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=301
https://www.minicircuits.com/WebStore/dashboard.html?model=ZAD-1+

There is a similar system in Russia.
http://air.swl.su:8073/

Good luck!

Lonecrow

Damn .. thats nice. The area I'm in has so much air traffic and so many channels I can pick up I'd literally have 100 bookmarks on the page. An aviation enthusiasts dream. I was picking up aircraft 250nm away. Damn converter died on the first weekend, sent it back for repair they said it was fixed .. nope. I gave up. Tested everything. I need to find a reliable downconverter.

That LG3236 is a signal generator right? So it can take signals and up/downconvert whatever you want on the fly?

JP1ODJ

There is no problem if you have BPF, LNA, Mixer and SG.

AB9IL

That's a fine setup! Without the signal gen, a TCXO - derived osc should work well. We should see more VHF / UHF / Microwave conversions out there.