Re: [Discuss-gnuradio] WBX Transmit Power Issue

[Ed Criscuolo]

I know this is a stupid question, but I've been bitten by this before:

Are you SURE you're cabled to the Tx/Rx connector and not Rx2?

@(^.^)@ Ed

On 2/10/12 4:30 PM, Reginald Cornwallice wrote:
> Hello All,
>
> I'm having an issue with the transmit power on N210 + WBX not being able
> to reach the spec'd 100 mW on the data sheet.
>
> I'm transmitting a PN sequence at a rate of 1.2 Mchips/second. The
> values I'm sending to the DAC are +/- 24000 which is a little
> bit below the full range of the DAC, but not much. I've set the TX_GAIN
> parameter to its maximum value of 25.
>
> I measure the output transmit power with a ladybug powermeter and get
> -15 dBm peak power. This is well below the spec of 20 dBm.
> Any ideas out there what could be wrong? Does the tx_gain of 25 set all
> the gains of the LO, IQ modulator, etc? What is controlled and set by
> setting set_tx_gain to 25?
>
> Thanks
>
> Reginald