- Cell phones have a shorter wavelength, especially 1900MHz phones.
- Cell phones have much better/bigger transceivers and antennas at the
cell tower
Sam
On 9/20/2013 9:22 AM, George Shaiffer wrote:
Probably speaking from ignorance, but an idea occurred while following
this thread:
The "rubber ducky" antenna disappeared from cell phones when they
started printing fractal based
antennas onto the case/circuit board. A Fractal antenna could
possibly be another solution? Just wondering.
There might be a NAR research project here.
George Shaiffer
From: [email protected]
To: [email protected]; [email protected]
Date: Fri, 20 Sep 2013 10:02:01 -0600
Subject: Re: [altusmetrum] Telemetrum Antenna
Clay & Carly Dunsworth <[email protected]> writes:
> Does the Gage of the antenna wire matter? I am guessing does.
In theory, a larger diameter wire should give slightly broad bandwidth.
In practice in this application, you won't be able to tell the
difference.
> What is the best Gage To use for the power of the telemetrum?
All TeleMetrum boards shipped to date have approximately 10 milliwatt
transmitter output power. At that power level, pretty much anything is
just fine. In production, I use 22 AWG solid insulated with PVC.
Bdale
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