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ANTENTOP- 02- 2004, # 006

Antenna for 900 MHz



Z of the Antenna




Antenna Pattern




The steel spiral antenna and antenna Harchenko were compared by means a commercial made UHF FSM. The steel spiral antenna lighted one LED on the FSM, the antenna Harchenko lighted five LEDs on the FSM.


Test of the antenna Harchenko with the base gives the communication range more then 2 kms when phone saw the antenna. Away from the main lobe the communication range is decreased. Buildings screening the antenna essentially weak the

communication range, too. Certainly, to increase the communication range ever more is possible to make an external antenna for the phone too, but it is possible only for stationary placement of the hand- held phone.


73! Petr, US1REO

Page 71


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