[eagle] Jim's Phase Noise Number!!

Jim,

Where did the -110 dBC/Hz at 10 KHz come from? And at what frequency? That's pretty aggressive using straight forward VCO's and PLLs. From Juan's data with his snappy SDRIQ, it looks like that the 70 cm is doing about -90 dBc/Hz at10 KHz. I thought that's what I read from his early HP8566B dtata.

My straight forward S2 RX downconverter PLL LO does -100 dBc/Hz at 10 KHz.

We'd better get a good read on this since, if real, it forces more sophisticated LO designs.

Great work Juan!!

Regards...Bill - N6GHz

Jim Sanford wrote:

I think I remember Bob's answer as -110dbc at 10 KHz offset.

Thanks & 73, Jim wb4gcs@amsat.org