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LNA gain
Posted: Thu Sep 05, 2019 12:40 am
by sean2e0saf
can anyone tell me what the LNA gain is on minituner.. mine says 0.9db with a sad face on beacon with met 8.1 and D5
Thanks
Re: LNA gain
Posted: Thu Sep 12, 2019 9:01 pm
by sean2e0saf
Quick question regarding the LNA gain what is exactly the best reading...
Re: LNA gain
Posted: Thu Sep 12, 2019 11:35 pm
by g4eml
The Tuner has a Low noise amp fitted to improve sensitivity for terrestrial use. When connected to a LNB the signal level can be too high for the tuner and the LNA will automatically reduce its gain. JP added a sad face symbol to indicate the input signal was too high. In practice though it doesn’t seem to make much difference to the received signal quality.
The LNA gain normally settles at around 13dB. If it is significantly below this then you can try attenuating the input signal. Variable attenuators with DC pass through are available on EBay. Just search for Satellite attenuator.