[Elecraft] K2 BFO alignment - pls check my values

ub5_073_oleg ub5_073_oleg at flashmail.com
Sun Jan 21 16:27:14 EST 2007


Hi,

I've just done BFO alignment and freq. calibration on my K2
and have some 

questions.

I can zero beat AM stations around 7130 kHz with +-10Hz.

1) BFO range: 
High freq. = 4917.13 KHz (>= 4916.3 -> ok)
Low  freq. = 4913.08 KHz (not <= 4912.7 !!!)
Range 4.05 kHz (>= 3.6 kHz -> ok)

Should I have concern about BFO low freq. is 1.1kHz too
high?


2) BFO alignment: I did not found any instructions on how I
should use filter 
crystals frequency written on the bag. It is "3.6" in my
case.

Nevertheless I am able to get all FL1-FL4 into desired
range, using RF noise and 
SpectranV2 on my PC. The pitch does not change when I toggle
"cw" and "cw rev."

Are my BFO alignment values ok?

+-------+-------+---------+-------+
|Mode   |FL1    |       BF1       |
+-------+-------+---------+-------+
|CW norm|1,50   |bF1t103c |4913,60|
|CW rev	|       |bF1t148c |4914,71|
|LSB    |2,20   |bF1t092l |4913,51|
|USB    |       |bF1t181u |4916,00|
+-------+-------+---------+-------+

+-------+-------+--------+-------+
|Mode   |FL2    |      BF2       |
+-------+-------+--------+-------+
|CW norm|0,70   |bF2 033c|4913,22|
|CW rev	|       |bF2 137c|4914,21|
|LSB    |2,00   |bF2 114l|4913,70|
|USB    |       |bF2 171u|4915,70|
+-------+-------+--------+-------+

+-------+-------+---------+-------+
|Mode   |FL3    |       BF3       |
+-------+-------+---------+-------+
|CW norm|0,40   |bF3 021c |4913,18|
|CW rev	|       |bF3 136c |4914,17|
|LSB    |1,80   |bF3 090l |4913,50|
|USB    |       |bF3 168u |4915,59|
+-------+-------+---------+-------+

+-------+-------+--------+-------+
|Mode   |FL4    |         BF4    |
+-------+-------+--------+-------+
|CW norm|0,20   |bF4 013c|4913,14|
|CW rev	|       |bF4 135c|4914,13|
|LSB    |1,60   |bF4 090l|4913,50|
|USB    |       |bF4 161u|4915,31|
+-------+-------+--------+-------+


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