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Re: [Discuss-gnuradio] ham/amateur getting started
From: |
Marcus Müller |
Subject: |
Re: [Discuss-gnuradio] ham/amateur getting started |
Date: |
Tue, 29 Dec 2015 13:05:25 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
>From the customer support perspective:
The E310 is a very nice device from an analog point of view, but be warned:
The E310 is an embedded device; it runs Linux on its own CPU, and you
have to develop your signal processing software to run on that CPU; if
you need to do something with serious bandwidth, you might even have to
resort to FPGA programming, because the CPU in the E310 definitely isn't
comparable to a Laptop or desktop CPU in performance.
It cannot really be used as a peripheral to a PC.
Generally, I do advise to use the E310 if you know you have a standalone
application that requires operation with little power on limited
bandwidths; and even then, I recommend that people get a B210 and
develop their signal processing on a PC using that, before porting your
software to the E310 (the UHD API is the same).
Best regards,
Marcus
On 12/29/2015 12:43 PM, John B. Wood wrote:
> On 12/25/2015 01:02 PM, David McQuate wrote:
>> Broadcast radio & TV transmitters, police & fire repeaters, and
>> others have potent signals. If your system does not attenuate them,
>> by using low-pass, high-pass, or band-pass filters, the peak voltage
>> at your analog to digital converter may at times exceed "full
>> scale". The resulting non-linear response produces many spurious
>> signals, that may mask the typically weak signals you are wanting to
>> recieve. An initial solution is to use broad-band attenuators to
>> keep the total power reaching the ADC below full scale. Then observe
>> the spectral peaks and insert appropriate filters to knock them
>> down. The attenuation may then be reduced. Frequently AM
>> broadcasters are the worst. A high-pass with cutoff around 1.6 MHz
>> may be all you need.
> Hello, and the Ettus USRP E310 has the front-end filters that may well
> accomplish the required receive preselection and transmit spurious
> filtering. Granted, the price of a E310 may put it out of
> consideration by many hams. Sincerely, and 73s from N4GGO,
>
>
> J. Wood
>
>
>
>
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> Discuss-gnuradio mailing list
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> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
- Re: [Discuss-gnuradio] ham/amateur getting started, (continued)
- Re: [Discuss-gnuradio] ham/amateur getting started, Tom Rondeau, 2015/12/28
- Re: [Discuss-gnuradio] ham/amateur getting started, Daniel Pocock, 2015/12/27
- Re: [Discuss-gnuradio] ham/amateur getting started, Ralph A. Schmid, dk5ras, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Marcus Müller, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Ralph A. Schmid, dk5ras, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Daniel Pocock, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, David McQuate, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, John B. Wood, 2015/12/29
- Re: [Discuss-gnuradio] ham/amateur getting started,
Marcus Müller <=
- Re: [Discuss-gnuradio] ham/amateur getting started, Marcus D. Leech, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Daniel Pocock, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Marcus Müller, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Markus Heller, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Ron Economos, 2015/12/25
- Re: [Discuss-gnuradio] ham/amateur getting started, Nate Temple, 2015/12/25
Re: [Discuss-gnuradio] ham/amateur getting started, Tim K, 2015/12/24
Re: [Discuss-gnuradio] ham/amateur getting started, Nate Temple, 2015/12/25