[aprssig] Appalachian Trail APRS trip report

[Andre PE1RDW]

Stephen H. Smith schreef:

> scott at opentrac.org wrote:
>
>>  
>>
>>>6) Cell phones didnt (though we were getting full
>>>   scale signal readings (maybe we were hitting too
>>>   many cells?
>>>    
>>>
>>
>>My experience (usually on a boat off the California coast) seems to be that the cell towers are easily heard by the phone way out there, but not vice versa.
>>
>>Scott
>>  
>>
> Typical -- (Relatively) high-power base station talkout v.s. 
> flea-powered battery-limited talkback from mobile (hand-held cellphone). 
>
> [ I'm forever trying to convince my girl friend that I can't hear her 
> cell phone decently, even though she hears me clearly from the 
> wireline side,  when she calls on it from inside the house. ]

The GSM system like it used in europe is better matched, it also alows 
the tower to controll the mobile´s output power (most of the time the 
handheld will be in the 10mW range)
If you can recieve the tower then the tower can recieve you, no exception.

73 de Andre PE1RDW