Per-
> I also have a xcvr2450 that won't lock sometimes. This is at 2.4GHz.
>
> Also an issue about IQ imbalance:
>
> I am measuring IQ imbalance. The values are generally quite good.
> However, one thing I don't understand is that the mirror frequency
> doesn't turn up on exactely "-f" but a few
On 04/16/2010 12:42 AM, Per Zetterberg wrote:
I am measuring IQ imbalance. The values are generally quite good.
However, one thing I don't understand is that the mirror frequency
doesn't turn up on exactely "-f" but a few Hertz off. I don't get this.
Are we sure that the down-conversion on the FP
I also have a xcvr2450 that won't lock sometimes. This is at 2.4GHz.
Also an issue about IQ imbalance:
I am measuring IQ imbalance. The values are generally quite good.
However, one thing I don't understand is that the mirror frequency
doesn't turn up on exactely "-f" but a few Hertz off. I do
Hi Matt
>Yes, -9 dBm is safe.
Glad to know it was all safe re input levels.
>I have not seen the problem locking without trying a lower frequency.
>What if you try 5 GHz twice in a row?
The problem with the not locking to 5G is very intermittent. A few times
when it did occur, I tried your sug
On 04/11/2010 11:09 PM, Ian Holland wrote:
Hi Matt
Can you please confirm by input level you are referring to the input to
the transceiver daughterboard? I am using the XCVR2450, for over-the-air
reception. The input level (to the XCVR2450 at the receiver) would have
been roughly:
Tx Power (max
: Ian Holland
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] IQ imbalance...
As long as the input level is in the safe range, having too much gain
would probably not damage anything. On the WBX, however, too much gain
with a strong but normally safe level might be a problem.
Matt
: Ian Holland
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] IQ imbalance...
On 04/08/2010 09:16 PM, Ian Holland wrote:
Hi All
I am using a pair of USRP2s, each equipped with a XCVR2450, for
transmission over-the-air of an RRC-filtered BPSK signal. The Tx
antenna has 3dBi gain, and the
...@ettus.com]
Sent: Friday, 9 April 2010 11:37 PM
To: Ian Holland
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] IQ imbalance...
On 04/08/2010 09:16 PM, Ian Holland wrote:
> Hi All
>
> I am using a pair of USRP2s, each equipped with a XCVR2450, for
> transmission over-the-a
On 04/08/2010 09:16 PM, Ian Holland wrote:
Hi All
I am using a pair of USRP2s, each equipped with a XCVR2450, for
transmission over-the-air of an RRC-filtered BPSK signal. The Tx
antenna has 3dBi gain, and the Rx antenna has 18 dBi gain. The
transmitted signal is at maximum amplitude, with gain
Hi All
I am using a pair of USRP2s, each equipped with a XCVR2450, for transmission
over-the-air of an RRC-filtered BPSK signal. The Tx antenna has 3dBi gain, and
the Rx antenna has 18 dBi gain. The transmitted signal is at maximum amplitude,
with gain set to 30 dB. The clocks on each end of th
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