[FreeBay] Wanting to TRADE, Radiosonde, Vaisala RS-80m.

[J Forster]

Ome4ga and GPS are not the same. Omega was a phase comparison systen and is
obsolete. GPS is a satnav system using 1.5 GHz pseudo-random coding.

-John



KD7JYK DM09 wrote:

> Radiosonde, Vaisala RS-80m, new in package.
>
> Battery operated, ~403 MHz
>
> Measures temperature (internal, external), humidy and barometric pressure.
>
> These also have an Omega GPS receiver.  Omega operated from 10 -14 KHz, the
> system was shut down in 1998.
>
> The Omega GPS receiver can be removed and used as a seperate VLF receiver,
> it converts the received 10 - 14 KHz RF to audio, the pinout is easy enough
> to figure out, +, ground, antenna, audio output, connect the radiosonde to a
> battery and probe around the Omega board pins with a meter and speaker, from
> what I recall, the battery is reverse polarity ~18VDC, uses a nine volt
> battery clip.
>
> Will trade for other meteorological devices or Ramsey HR-xx or QRP-xx
> crystal controlled QRP transmitter or Direct Conversion RX, or ???
>
> Kurt
>
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