[aprssig] Inexpensive APRS transmitter kit

Scott Miller scott at opentrac.org
Sun Apr 18 19:38:04 EDT 2010

And an APRS balloon tracker that holds off while waiting for the channel 
to be clear will likely never get a packet out at altitude.  Unless 
you're on an alternate frequency, you just have to keep the power down, 
use a reasonable beacon rate, and limit the path.


Cap Pennell wrote:
> Please remember in your search for hardware, especially at any elevation on
> a shared ham frequency, any "transmit only, no signal detect" device is
> always sadly sending "I'm proving _my_ unfounded vanity and greed but the
> rest of you suck."
> 73, Cap
>> -----Original Message-----
>> From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On
>> Behalf Of Joshua Shriver
>> Sent: Sunday, April 18, 2010 12:30 AM
>> To: aprssig at tapr.org
>> Subject: [aprssig] Inexpensive APRS transmitter kit
>> Sometime hopefully this year I'm hoping to release a weather balloon
>> with a small payload for taking pictures, maybe other things via
>> sensors.
>> Wondering if there are any inexpensive, light-weight and low power
>> aprs transmitters that can be used for such a thing.
>> Best I've found so far is the Byonic TinyTrak setup. Though it seems a
>> bit pricey, though it's the best bet so far.  I've even looked into
>> introduction DIY fm transmitter kits and can buy a APRS encoder for
>> around $24 from another ham I know.
>> Any advice or recommendations would be appreciated.
>> -Josh
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