[Elecraft] Field Day rig experience

[David Gilbert]

I think another major concern for closely positioned rigs would be 
transmitted phase noise, and of course that doesn't show up in the 
Sherwood  charts.  Jim's tests 
(http://audiosystemsgroup.com/TXNoise.pdf) show some large differences 
between various rigs, although the 7300 and 7610 are not specifically 
included (the 7600 is, however).  The K3/S are much cleaner rigs.

73,
Dave   AB7E



On 6/9/2018 9:34 AM, Wayne Burdick wrote:
>> On Jun 9, 2018, at 5:24 AM, Bill <billclarke at nycap.rr.com> wrote:
>>
>> Along the line (lightly discussed under "K3- AF Knob") of what rigs are used for dxpeditions and Field Day......  How do the new technology ICOMs (7300 and 7610) do under the "several rigs on the same band" conditions? The size, weight, and cost factor is inviting for the 7300 - BUT!!! Is it up to the job? Close to up to the job? Or, better left home during these events?
>
> Hi Bill,
>
> Hopefully you’ll get some responses to this question from those with direct experience. But looking at it theoretically: both the 7300 and 7610 are direct-sampling radios with about 25-30 dB less blocking dynamic range than the K3 or K3S. On Field Day this could have a definite impact when using multiple transmitters on the same band, or even on different bands, depending on antenna spacing and power level used.
>
> Dynamic range of all of these radios is quantified in the receiver performance table at www.sherweng.com, specifically the fifth column (“100 kHz Blocking”).
>
> Wayne
>
>
>
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