[aprssig] Weather Station mess..

Stephen H. Smith wa8lmf2 at aol.com
Sat Feb 15 16:55:38 CST 2014


On 2/15/2014 4:10 PM, kliegle at myfairpoint.net wrote:
> Ditch the 2M mobile rig, place an modern HT with power saver enabled if all you are doing is sending telemetry, not digipeating.

You may be lucky living in a low-density area, but the typical California 
mountain top is saturated with RF from multiple sites.   An HF with it's 
completely wide-open non-selective front end will get completely overloaded and 
blocked on nearly any CA mountain top.

The HT receiver is build to be sensitive to offset the lousy inefficient 
antennas (i.e. rubber ducks) normally used near to the ground, but it has 
next-to-no front-end dynamic range or selectivity and will overload brutally 
when connected to a high antenna in an RF-saturated environment.

Of course, no extra power would be consumed if you routed the HT's antenna lead 
through several repeater-type cavity filters on the way to the antenna......


>   No mechanical relays to fail, very little power consumed inbetween TX's. My KA1GJU-3 WX station has been solar powered for +10 years, using HT's on 5 Watts. It's also a digipeater as well, so the power save feature HAS to be off in able to RX packets completely.
>   If 5 watts isn't enough, get a better antenna (cheaper than burning up valuable solar power with a QRO rig).
>
>   73 de Kriss KA1GJU
>
>
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> http://www.tapr.org/mailman/listinfo/aprssig
>



More information about the aprssig mailing list