Ron,
You asked if it is normal to hear birdies, the short answer is not always.
Most superhet receivers, but certainly not all designs, will be affected by
birdies. Unfortunately many if not most of the receivers designed for the
amateur market use an open plan layout without shielding nor
Thanks Geoff,
yours is the second reply I've had letting me know that there are
birdies in the K2 receiver. It answers my question as to whether or not
I overlooked something in the assembly or if this was a known condition.
I say condition and not problem as the level and location of the
Ron,
The K2 uses VFO frequencies above the incoming signal for bands below 15
meters, and that helps keep the birdies at bay. On 15 meters and
above, the VFO is below the incoming signal which is not the greatest
situation for birdies, but provides better VFO stability - read as a
design
I hadn't noticed this before as I don't normally operate in this part
of 15 metres. As I tuned across 15 metres I noticed a couple of
birdies, switching between the antenna and dummy load didn't make
them go away. They're weak, at the bottom of the S meter, but I
don't know if this is
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