Re: [Flexradio] Radio Test Issues

2008-02-23 Thread Bill Tippett
NC0B: Comments on testing radios. One can test radios with really clean OCXOs, but that does not give much flexibility. W6RMK: Unless you're independently wealthy and can afford a whole batch of oscillatorsgrin When that person steps forward, the following would be an interesting receiver

Re: [Flexradio] Radio Test Issues

2008-02-23 Thread Jim Lux
Quoting Bill Tippett [EMAIL PROTECTED], on Sat 23 Feb 2008 06:56:18 AM PST: NC0B: Comments on testing radios. One can test radios with really clean OCXOs, but that does not give much flexibility. W6RMK: Unless you're independently wealthy and can afford a whole batch of

[Flexradio] Radio Test Issues

2008-02-18 Thread Rob Sherwood
Comments on testing radios. Why not test at really close spacing? The real limit will usually be phase noise at 1 kHz or closer. I may have made an error on an earlier post. The IMD DR3 of the K3 with the 500 Hz 5-pole roofing filter and 500 Hz DSP filter was a combination of phase noise and

Re: [Flexradio] Radio Test Issues

2008-02-18 Thread Jim Lux
Quoting Rob Sherwood [EMAIL PROTECTED], on Mon 18 Feb 2008 12:30:50 PM PST: Comments on testing radios. One can test radios with really clean OCXOs, but that does not give much flexibility. Unless you're independently wealthy and can afford a whole batch of oscillatorsgrin One needs to