I'm in need of some feedback regarding using the Smartee V5 SDR and the new cased H1 LNA

[Cathal O'Donghaile]

Good morning everyone

I've been troubleshooting a problem I'm having after replacing the barebones H1 with the cased version and I'm using the Nooelec Smartee V5 SDR. I use rtl_power to collect the data on a raspberry pi using the following command line:

rtl_power -f 1419.5M:1421.5M:1k  -T -g 42 -i 60 -e 2.5h radiotelescope.csv

After removing the -T switch (which appears to disable the BiasTee rather than enable it) leaving the manual gain switched on, I'm getting that spike in the centre of the ezCon317antByFreqMax.png and doppler. 

I know from using the barebones version that the -g setting is necessary as is the -T. I wonder has anyone else had this same problem with the Smartee v5? Do I need to look at the XTR instead which has hardware offset facility?

Would appreciate some feedback.

Cathal