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[aprssig] Kantronics MT1200G

Jason KG4WSV kg4wsv at gmail.com
Tue Dec 11 12:15:21 UTC 2007


On Dec 11, 2007 2:15 AM, Stephen H. Smith <wa8lmf2 at aol.com> wrote:

> I've always though embedding the active RF circuitry of of a GPS
> receiver in some other device's box (like a transceiver or TNC) is a
> rather perverse concept since it then forces you to deal with the
> horrendous coax losses at 1.6GHz to get from the external antenna to the
> GPS.  Not to mention having to deal with fabricating coax cable
> assemblies with those nasty subminiature connectors like SMAs or SMCs
> that GPS receiver modules and patch antennas use.


I don't think it's all that bad an idea, as the industry has come up with a
selection of amplified GPS antennas to deal with this scenario.  A few years
ago I got an old Trimble 6 channel GPS for $15 from a surplus electronics
place, then paid about $5 or $10 for an amplified antenna on ebay.  It has
been in my truck ever since, and providing excellent service.

It is cheaper and simpler to mount a GPS18 or Deluo outside as Stephen says,
but an internal GPS isn't the end of the world.

-Jason
kg4wsv
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