[Discuss-gnuradio] USRP1 + RFX900) + ATR

[David Evans]

Hi,

I am using 2 x (USRP1 + RFX900) for simple transceiver test (USRP1 to 
USRP2 back to USRP1), and can successfully transmit OOK packet (preamble 
+ payload) and receive response.

However, if I enable ATR on the sender, the received response by the 
sender is corrupted (I successfully correlate preamble, but following 
payload is corrupted). It's as if the received signal level becomes 
reduced after the ATR switches, or the sampling becomes off cut.

Basically, the simple transceiver works, until Automatic Transmit 
Receive switch is enabled. I would like the transmitter to switch on 
only when transmitting, thus removing the LO breakthrough when in a 
quiescent state.

Is there timing constraints I should adhere to, is there any further 
info on use of ATR I could be pointed to,

Thank you,
David.