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

[Robert Middelmann]

Lachlan
My DFing setup is just an SDR, portable beam and a tablet computer running
SDR touch on Android. Nice thing about the SDR is you can wind the gain
down when you get close

Rob VK5TRM

On Wed, Apr 10, 2019, 16:27 Lachlan Stewart via Vk5-wx-sonde <
vk5-wx-sonde at vk5fo.com> wrote:

> 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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