[Vk5-wx-sonde] Cheapo df rig for sondes

[Lachlan Stewart]

Hi all,

It seems that a few people maybe after cheap rigs for df'ing sondes. I
thought I'd let you know what I use!

This 433mhz jaycar receiver is broadband enough to pick up sondes
https://www.jaycar.com.au/wireless-modules-receiver-433mhz/p/ZW3102

As far as putting a circuit together, see step 11 here;
https://www.instructables.com/id/433-MHz-UHF-lost-model-radio-beacon/

When used with a 5 element yagi it is pretty sensitive to the sondes. When
on the ground the range is around 1km, dependent on hills of course!

This receiver only pickups up the carrier. So with a normal radio you'd get
silence, this unit gives distinct sounds. This maybe useful for those
encrypted units!

Regards
Lachlan
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