[time-nuts] GPS from a window seat
Magnus Danielson
magnus at rubidium.dyndns.org
Fri Oct 2 02:30:37 UTC 2009
jmfranke wrote:
> I used a bias tee with a capacitor block. I varied the resistor until I
> could see signals coming from the external antenna, the built in patch
> was shielded with aluminum foil and the receiver verified that no
> signals were coming from the internal antenna. Some receivers needed
> only a 10K resistor, some models needed 220 Ohms.
In my case I still want it to pass 5 VDC, but let the receiver see some
additional current, so I put a coil in series with the resistor, to not
load the RF too much.
Cheers,
Magnus
More information about the time-nuts
mailing list