AW: [Elecraft] [K3] G4AON and his K3

[Koppendorfer Klaus]

just tried to do also some dynamic range measurements

two HP 8640 Generators (out +20dBm) attenuated to 0dBm into
an 6dB coupler attenuated to -10 dBm into an stepp-attenuator

done on 20meter with 4pole 500Hz filter
IMD with pre  -140 dBm
IMD no pre   -134 dBm

dynamic range  no pre
spacing   IMD-Level   Dynamic
20 kHz      -31 dBm     103 dB
5 kHz       -31 dBm     103 dB
2 kHz       -34 dBm     100 dB
+/- inaccuration

very happy
73
klaus
OE6KYG


> My measurements give a 3rd order dynamic range of around 100 dB at
 > 2 KHz signal spacing with a 400 Hz 8 pole filter and slightly better
 > with a 2.8 KHz 8 pole filter (around 105 dB).

>We measured a dynamic range of c. 106db (+/- a few dB) from 100kHz down
>to 2kHz with the 8 pole 400Hz filter on 20m. So both measurements (by
>DK4YJ with K3 #00067 and G4AON with K3 #00080) are in the same ballpark.