Hi Wayne,
Few K3 owners are aware that the K3 has built in transmit/receiver bandpass filters for each band. That and very low phase noise and exceptional receiver dynamic range are why the K3 is such a superb Field Day transceiver. At the W3AO Field Day we use four K3 transceivers on 20 meters: CW, SSB, Digital and GOTA. N one of the 20 meter operators will be aware of the other three transceivers u nless one of the other transceivers accidentally lands on the same frequency. Is there any published data about the performance of the built in bandpass filters? tks 73 Frank W3LPL ----- Original Message ----- From: "Wayne Burdick" <[email protected]> To: "Bill" <[email protected]> Cc: "Elecraft Reflector" <[email protected]> Sent: Saturday, June 9, 2018 4:34:53 PM Subject: Re: [Elecraft] Field Day rig experience > 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]
