Re: [Discuss-gnuradio] Re: Noise while executing USRP examples

[shweta vishwakarma]

Hii Eric,

1)As suggested by Matt ,we have purchased the Antenna’s (Specifications again for reference).

2) Now Can we change the frequency range for the below specified examples fsk_tx.py , fsk_rx.py and  nbfm_ptt_quick_and_dirty.py other than 29Mhz ?

3) Since we have already purchased the antenna's , is there any way that, with minimal modifications we can use the same Antenna’s?

Please provide some solution on the same.

Antenna specifications:                                     

1. Electrical Characteristics:

    Operating Frequency 2.4~2.5 & 4.9 & 5.15~5.35 & 5.725~5.85 GHz
    Antenna Type: Dipole
    Polarization Type :  Linear
    Type of Radiation:  Toroidal
    Peak Gain 2.0 dBi Typical For 2 G 4.0 dBi Typical For 5 G
    Impedance:  50 Ohm nominal                                  V.S.W.R. 2.0:1 Max.

2. Mechanical Characteristics

    Swivel :  90 degrees
    Connector:  SMA(M)
    Core:  N/A
Regards,
Shweta 


On Wed, 10 Aug 2005 Eric Blossom wrote :
>On Wed, Aug 10, 2005 at 10:34:32AM +0530, Arora_Amit wrote:
> >
> >      1)      We are running the USRP examples on USRP board fsk_tx.py
> > and fsk_rx.py on one PC. During execution we are receiving too much of
> > noise, what might be the reason?.any solution?
> >
> >      2)      Can we run both fsk_tx.py and fsk_rx.py simultaneously
> > on the same PC or do we need to run them on two different PC's ?
> >
> >      3)      While running nbfm_ptt_quick_and_dirty.py  we are
> > receiving lot of noise. Please provide some solution?
>
>Matt and I will be sorting out the Tx/Rx example sometime before we
>release 2.6.
>
> >      4)      As suggested in the USRP document, we are using the
> > antenna with following specifications:
>
>An antenna tuned for 5 GHz is not going to work well for Tx and Rx
>taking place at 29 MHz...
>
>Eric
>
>
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