10 Mar
2013
10 Mar
'13
2 p.m.
OK. Thank you.
2. What is the power output in dbm of your umtrx?
After fixing this
issue<https://code.google.com/p/umtrx/issues/detail?id=41&can=1&…
measured + 20 dBm for 900 MHz band and +17 dBm for 1800.
I will be testing this UMTRX with a DCS amp with 10 dBM input. Just to be
sure, I just need to adjust attenuation to at least 7 dBM and 8 probably to
avoid clipping the RF amp as below:
GSM.Radio.PowerManager.MaxAttenDB 8
GSM.Radio.PowerManager.MinAttenDB 0
Is using an LNA with BPF advisable with your UMTRX?
What is the operating temperature of your UMTRX as I want to make sure the
HD case I am using for testing is good enough. I installed a small fan and
so far temperature is around 40 deg C.
The LEDs are on the board and I may want to solder some LEDs to monitor
status, where on the board can I terminate the power for LEDs?
On Tue, Mar 5, 2013 at 10:16 AM, Andrey Sviyazov <andreysviyaz(a)gmail.com>wrote;wrote:
Hi Joel.
On Fri, Feb 22, 2013 at 6:28 PM, joel yabut <joel(a)jointventure.com> wrote:
Not yet measured and
unfortunately there are no info from Lime Micro.
Andrey Sviyazov.
--
Mother Ignacia Avenue corner Scout Rallos St.
Quezon City, Metro Manila, Philippines
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?
After fixing this
issue<https://code.google.com/p/umtrx/issues/detail?id=41&can=1&…
measured + 20 dBm for 900 MHz band and +17 dBm for 1800.
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
Best regards,