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

[Lachlan Stewart]

Nice idea Rob!

I might even try that with my spare sdr.
I didn't know about sdr touch

Thankyou!


On Wed, 10 Apr 2019 4:39 pm Robert Middelmann via Vk5-wx-sonde <
vk5-wx-sonde at vk5fo.com wrote:

> 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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