I can not see any reference to noise figure in the brochure. Just MDS and FM sensitivity with no bandwidth.
When I get mine I will measure the noise figure on a test set. It is likely to be under 2dB and I will use a low ENR head! I suspect like the XV144, the K144XV will need some gain reduction for use with a masthead pre-amp. Signals at the antenna of -30 dBm are not unknown around here resulting in milliwatts at the mixer but the time you add in 20 dB of preamp plus another 20dB of conversion gain. I am still worried about the diode switching, 2m specific PTT outputs and delays. I assume the usual 20mS delay option is there in the menu like all the other bands. This is not quite long enough when you are sequencing an amplifier and a pre-amp as there is more to switch than just the coaxial relays. When used as an IF for microwaves it will need even longer to allow a waveguide switch to operate but this will be mitigated by the split TX/RX outputs and the low power 2m interface. Where does this come out? Mike -- View this message in context: http://n2.nabble.com/Elecraft-K-3-K144XV-tp4267790p4271265.html Sent from the [K3] mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
