Tvrx lna

GNU Radio
1

Hi,

Does the TVRX board have a front-end gain stage before the signal is
downconverted to IF? I will be using the TVRX and the USRP to capture
over the air HDTV signals in a mobile field test. I looked at the
schematic for the TVRX board and it looks there isn’t a discrete LNA on
the board. Does the MT4937 chip have an integrated LNA before the down
conversion to IF? I’ve looked at the tuner datasheet but couldn’t tell
for sure if there was an LNA.

Thanks for any help and information.

Nirali

2

Nirali P. wrote:

Hi,

Does the TVRX board have a front-end gain stage before the signal is downconverted to IF? I will be using the TVRX and the USRP to capture over the air HDTV signals in a mobile field test. I looked at the schematic for the TVRX board and it looks there isn’t a discrete LNA on the board. Does the MT4937 chip have an integrated LNA before the down conversion to IF? I’ve looked at the tuner datasheet but couldn’t tell for sure if there was an LNA.

The TVRX has an 8-10 dB noise figure.

Matt