>From the Topband Reflector:
Earl, K6SE wrote:
"However, there is one major flaw with the K2 on transmit - when using a
K2 to drive a kilowatt amplifier, the strong magnetic field from the
amp's HV transformer gets into the PLL circuit of the K2 causing
what sounds like noise on the K2's CW sidebands, extending out at least
+/-2 kHz."
Tom, W8JI replied:
"....defects like this are not visible on a scope. The carrier looks
pure. They are FM, not AM. MFJ has a similar problem in the small
transceivers they sell.... Small inductors often change inductance when
subjected to strong external magnetic fields. Something to keep in mind.
Mu metal or even regular soft iron or steel around the VCO or VFO coil
will probably help a great deal."
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