(click the pic for increased resolution)
My friend Steve K5FR of DDUTIL fame added a digital readout of the Flex 6300 S meter. I prefer this to the S meter readout for this kind of discussion since the readings are exact. The readings on the 6300 are -98 dBm reducing to -117 dBm or a 19 dBm improvement in the noise floor. In the Anan 100D we see a -20 dBm improvement, -89 to -109 dBm. A virtual dead tie which is well within the margin between the two radios. Both radios show a greater than 3 S unit improvement average, 4 S units on peaks. I tried both noise blankers on the Anan but didn't see a numeric difference between the two. This data is of NB 1 which is my normal choice.
This test was performed a 14:30 local on 30M using the same antenna, a full sized 80M 1/4 wave vertical tuned to the 30M band with a MFJ 998 tuner. Both radios are on CW with a 450hz offset and 100 Hz filters. No other noise abatement is employed. The dummy load (no antenna terminated in a high quality shielded 50 ohms) noise floor on the 6300 is -130 dBm and on the Anan 100D, -117 dBm.
FWIW here is a pic of the lightning map in my area at 14:30
I'm on the east central coast of Florida right under that big yellow/red blob of lightning. I am running the latest alpha version of SSDR and the latest general release of HPSDR/firmware. Personally I can't kick about being able to receive S0 to S1 signals in the middle of a huge thunder storm. I present the data unvarnished so you can draw your own conclusions.
73 W9OY
