hi Telamon:

how would you characterize these RX340 specs?

IP3: 5-kHz -53 dBm, 20-kHz +4 dBm
phase noise: -113 dBc/Hz
ultimate rejection: 70 dB

regards,
phil

In article , "phil "
wrote:

hi Telamon:

how would you characterize these RX340 specs?

IP3: 5-kHz -53 dBm, 20-kHz +4 dBm

The 5 KHz number is not very good. The 20 KHz number is not bad. In
practice you might think I would have a problem listening to a weak
station with a strong station on the next channel over but I haven't
noticed it.

phase noise: -113 dBc/Hz

It would be nice if it was -120 down but it appears to be low enough
because the receiver noise floor can be 1uV.

ultimate rejection: 70 dB

It is supposed to be at least 70 dB but depending on how you use the
radio it is actually much greater so the ultimate selectivity is better
than this number makes it look.

--
Telamon
Ventura, California

hi Telamon:

my purpose was not to belittle. you're correct, specs can be deceiving.
does someone sell a $600 K2 for a $3300 Orion if under their conditions it
yields only 0.2% more IDs? possibly. you would be successful with any
receiver because you understand RF environment, antennas, propagation
patterns, etc.

regards,
phil

"phil " wrote:

hi Telamon:

how would you characterize these RX340 specs?

IP3: 5-kHz -53 dBm, 20-kHz +4 dBm
phase noise: -113 dBc/Hz
ultimate rejection: 70 dB

How's this radio look to you, phil?

dynamic range at 5 kHz: 59 dB, 20 kHz: 81 dB
phase noise: -131 dBc/Hz
ultimate rejection: 75 dB

--
Eric F. Richards,
"Nature abhors a vacuum tube." -- J. R. Pierce, Bell Labs, c. 1940