[Elecraft] K3 Rx Phase Noise: superior charactistics at 14-MHz vs. 28-MHz?

I recently ordered a high-performance Kuhne TR 144 H +40 2m transverter for use with my K3 in an EME station I am building at my new Glade Park CO QTH. Kuhne recommended that I run their transverter at 14-MHz in lieu of 28-MHz due to superior K3 rx phase noise at the lower frequency. True?

Re: [Elecraft] K3 and phase noise

Hi Eric Do you have any transmitter IMD numbers yet? Craig VK3HE --- Eric Swartz - WA6HHQ, Elecraft [EMAIL PROTECTED] wrote: Hi Bill, The reference on-channel signal for past ARRL BDR testing has typically been set between -110 and -80 dBm, well above the MDS. te interfering signal

Re: [Elecraft] K3 and phase noise

Here are transmit composite phase noise numbers from the Lab for the K3. Needless to say, we are pleased with the results. :-) I've also included some numbers from the ARRL reviews for several late model rigs. Rig 1kHz2 10 20 50 100 1M K3 -110 -119 -136 -140 -143 -144

Re: [Elecraft] K3 and phase noise

Eric Swartz - WA6HHQ, Elecraft wrote: Here are transmit composite phase noise numbers from the Lab for the K3. Needless to say, we are pleased with the results. :-) I've also included some numbers from the ARRL reviews for several late model rigs. Rig 1kHz2 10 20 50 100 1M

[Elecraft] K3 and phase noise

WA6HHQ: Rig 1kHz2 10 20 50 100 1M K3 -110 -119 -136 -140 -143 -144 -150 I'm now wondering how you measured 143 dBBDR at 2 kHz in the presence of 119 dB Phase Noise? Shouldn't the measurement have been phase noise limited? 73,

Re: [Elecraft] K3 and phase noise

Hi Bill, The reference on-channel signal for past ARRL BDR testing has typically been set between -110 and -80 dBm, well above the MDS. te interfering signal generator is increased until this signal drops by a dB due to compression. This on frequency signal dominates the in-band RMS audio

[Elecraft] K3 and phase noise

WA6HHQ: They are now making the dynamic range measurements by measuring the on frequency IMD spur or blocked signal using a narrow band spectrum analyzer. This separates the blocking or IMD measurement from reciprocal mixing, which they will do as an additional test. I suppose this

[Elecraft] K3 and phase noise

I wrote: Rig 1kHz2 10 20 50 100 1M K3 -110 -119 -136 -140 -143 -144 -150 ORION 2 -121 -129 -126 -125 -118 -128 -138 Delta-11 -10 +10 +15 +25 +26 +12 Make that +16 73, Bill

Re: [Elecraft] K3 and phase noise

And if you look at the actual phase noise plots the actual cross over point is right about 5 kHz. You are absolutely right about the importance of looking at the overall area 'under the curve' for phase noise as you move out across the band. The sum integrated total of the mixing of the phase