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joel yabut joel at jointventure.comI have a question about the ideal RSSI Noise. I am testing the UMTRX and have the following obeservation: when I type noise with the default setup of RX GAin 47. the RSSI noise is -26dB and when i change the noise to RX Gain 0. the RSSI noise goes down to -46dB. Which is the better option? as I understand the lower the noise floor the better. Now if I install my Duplexer, LNA and BPF my noise goise up to -16dB. Is this okay or should I trim the RX gain? What is the ideal RSSI NOISE? Thanks, Joel On Tue, Mar 5, 2013 at 10:07 PM, Alexander Chemeris < alexander.chemeris at gmail.com> wrote: > On Fri, Feb 22, 2013 at 6:28 PM, joel yabut <joel at jointventure.com> wrote: > > May i know the following specs > > 1. What is the tx and rx isolation of umtrx? > > 2. What is the power output in dbm of your umtrx? > > Andrey Sviyazov will comment on this. > > > 3. How is the lna on the rx input and is an external lna and bpf > > recommended? > > For Fairwaves 10W base stations we're developing UmSEL, which has > channel filter and an additional LNA. For the use without amplifier > you don't need any additional filters or LNAs. > > > 4. What is the main advantage of umtrx compared to usrp by ettus? > > If you want to use it for GSM, then it's cheaper and gives you > dual-channel support. > > -- > Regards, > Alexander Chemeris. > CEO, Fairwaves LLC / ООО УмРадио > http://fairwaves.ru > > -- Mother Ignacia Avenue corner Scout Rallos St. Quezon City, Metro Manila, Philippines -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20130314/a5fe48ce/attachment.htm>