N4ZR wrote: The two QS1Rs (out of over 60 regulars contributing to the RBN)
continue to baffle us.
I spent some Excell time with 150K RBN raw spots from quiet Feb. 26th. I
didn't find any harmonics error.
Other obvious error examples within first 5000 QSO included:
ON5KQ ON EU 7033,7 40m 2E0VMT G
EU CQ 27 26.2.2013 19:52 40m
ON6ZQ ON EU 7022,3 40m 2E0VMT G
EU CQ 20 26.2.2013 19:52 40m
DF7GB DL EU 7033,7 40m 2E0VMT G
EU CQ 16 26.2.2013 19:52 2E0VMT
This is probably classic QSD case?
OL5Q OK EU 14020,5 20m 4S7WI 4S AS
CQ 40 26.2.2013 16:21 20m
OL5Q OK EU 14005,0 20m 4S7WI 4S AS
CQ 24 26.2.2013 16:22 20m
RU9CZD AS 14005,1 20m 4S7WI 4S AS
CQ 7 26.2.2013 16:22 20m
I guess OL5Q has too much gain although image seems to be 16 dB stronger
than real signal.
SV8RV SV EU 7046,1 40m 5E5ET CN AF
CQ 14 26.2.2013 15:44 40m
F5VLY F EU 7046,0 40m 5E5ETT CN
AF CQ 23 26.2.2013 9:16 40m
F5VLY F EU 7046,0 40m 5E5ETT CN
AF CQ 20 26.2.2013 10:13 40m
TF3Y TF EU 7046,0 40m 5E5ETT CN
AF CQ 19 26.2.2013 20:18 5E5ETT
Dots artifact but always on 7046 kHz at various times and places. It might
be SSB signal.
S52AW S5 EU 14081,5 20m A5TN A5 AS
CQ 20 26.2.2013 10:05 20m
S52AW S5 EU 14081,5 20m A5TN A5 AS
CQ 19 26.2.2013 10:08 A5TN
Others spoted UT5MD at 14080 kHz at the first case, second 3 minutes later
is misterious as UT5MD moved to 18 MHz.
QS1R operates with 16 bit ADC and discrete errors caused my arithmetic might
be expected. Similar RX problems with DDS are cleaned by analog PLL.
N1MM Logger window for Available mults & QSOs highlights most of the bad
uniques better than overcrowded bandmap.
LP MMM S56A
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