How does Yaesu do it with the FT9000? You can listen on the second receiver while simultaneously operating transceive on the other receiver/transmitter on another band while transmitting? N2TK, Tony
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott Manthe Sent: Monday, May 14, 2007 11:49 AM To: [email protected] Subject: [Elecraft] Re: K3 RX performance (tantalizing preview) One reason is called the inverse square law. There's a HUGE difference in a rig being able to deal with a kilowatt signal a couple blocks away and being able to deal with a kilowatt signal in the same room. Another is that almost everyone who doesn't want to destroy their rig's front-end uses giant bandpass filters in front of each rig in a SO2R setup. Including eleven of these filters to cover all the bands the K3 will cover would make it the size of a broadcast transmitter. For reference for the HF challenged, take a look at a good set of repeater duplexers. Now, multiply that by eleven bands. It's one thing for a 2 meter/440 rig to be able to transmit and RX at the same time- they're running maybe 50 watts at 300 mHz spacing. It's not so easy with a rig running 100 watts, a kilowatt, or at some stations, several kilowatts at 2 or 3 mHz spacing. Hopefully this helps. 73, Scott, N9AA Bill Coleman writes: > Question: > > If the K3 can do this, then why can't it do SO2R in one box? All that is > required is for the second receiver to be able to receive (likely on a > different band) while the transmitter is transmitting. > > Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED] > Quote: "Not within a thousand years will man ever fly!" > -- Wilbur Wright, 1901 > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
