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Spurious RF Spikes on Every Band
I'm using a 60 foot center fed dipole fed with 450 ohm ladder line. And an old MFJ-941C manual tuner because the internal flex autotuner can't handle this antenna. The birdies get much smaller or even disappear on most bands when I fully “detune” the antenna with the manual tuner. But when tuned, there are tremendous spikes in every band as shown in the photos below.
One problem may be that I live in an apartment and cannot connect any RF/AC ground to the radio. The switching power supply is grounded through the AC wall plug, but nothing else so far.
If you'd be so kind, take a look at the screenshots below and let me know your thoughts. Some bands it's less obvious than below, but this pattern is visible to a greater or lesser degree on every band once that band is tuned.
Thanks! Randy Steffens
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