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 <[email protected]> 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
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
