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

[Jason - W8ZZU]

I thought this was a free list..  Are you offering this stuff for free? 
Maybe the Ham for sale / swap list would be a better choice?
----- Original Message ----- 
From: "J Forster" <jfor at quik.com>
To: "KD7JYK DM09" <kd7jyk at earthlink.net>
Cc: <freebay at mailman.qth.net>
Sent: Wednesday, April 16, 2008 7:22 PM
Subject: Re: [FreeBay] Wanting to TRADE, Radiosonde, Vaisala RS-80m.


> 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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>
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