hi,
When I am doing a full calibrate O S L iso and thru. I get a -10.8 dB on log mag with the RG174 coax cable. on full RF span exemple: 28 to 30MHz or other frequencies range. channel select is thru...
I don't understand why, I should get around 0dB of attenuation
I have tested a VHF cavity and also a 11 db of attenuation (I should get around 1db att)
any could help
thanks
Gilles
