Re: [IRCA] Elad FDM-S2 and a Phaser [Latency Issues]

[neilkaz <neilkaz@xxxxxxxxxxxxx>]

Les, forgive me as I don't quite understand exactly what you mean by latency. I will state that I have used both the Quantum Phaser and the Wellbrook Array Controller with my Perseus and the audio recorded and played back is EXACTLY the same as what I heard when listening to it live while phase adjusting a deep null.

You refer issues getting deep nulls when playing back the audio? Again, I don't understand. You have to do your nulling prior to playback.

73 KAZ

-----Original Message-----
>From: Tim Tromp <kilokat7@xxxxxxxxx>
>Sent: Feb 25, 2015 4:20 AM
>To: IRCA Mailing list for the International Radio Club of America <irca@xxxxxxxxxxxxxxxx>
>Subject: Re: [IRCA] Elad FDM-S2 and a Phaser [Latency Issues]
>
>Les, I use a quantum phaser with my Perseus and have never noticed a
>latency issue when making phaser adjustments, and I'm still using my old
>MSI Wind netbook.  I'm curious to hear from others now.
>
>73,
>-Tim
> On Feb 25, 2015 4:13 AM, "Les Rayburn" <les@xxxxxxxxxxxxxxxx> wrote:
>
>> I'd like to pair my Elad FDM-S2 SDR receiver with my Quantum Phaser,
>> allowing me to null out local stations using two antennas. The problem that
>> I'm having is that there is a certain amount of latency present in the
>> playback of audio from the SDR, making it difficult to do the subtle
>> adjustments that result in the deepest nulls.
>>
>> This problem isn't unique to the Elad. Had the same issues with my SDR-IQ,
>> FunCube Pro, and Perseus SDR's as well. Despite running a very modern
>> computer, with quad processors, plenty of RAM, etc. The latency just seems
>> to be impossible to remove.
>>
>> For real-time listening or recording, it makes little difference...but
>> it's a stumbling block when using a phaser. Just wondering if anyone has
>> figured out how to work around this issue, or another solution.
>>
>> Advice more than welcome.
>>
>>
>> --
>> 73,
>>
>>
>> Les Rayburn, N1LF
>> Maylene, AL
>> EM63
>>
>> Member NRC, IRCA, & Medium Wave DX Circle
>> Former CPC Chairman for NRC/IRCA
>>
>> Perseus SDR, SDR-IQ,Funcube Pro, Wellbrooke ALA-1530+ loop, LF Engineering
>> Active Whips,
>> Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector
>>
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