Maximum Frequency Separation for VFOs A & B Using MultiRX?

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In PowerSDR using a FLEX-1500 what is the maximum frequency separation that can exist between VFOs A & B using MultiRX?
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Posted 4 years ago

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Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

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Official Response
A MultiRX "receiver" (VFO-B) only functions within the sampled bandwidth, which for a FLEX-1500 is approximately 48 kHz and no greater.  Now the primary receiver (VFO-A) is always fixed in the center of the spectrum display, so from a visible standpoint, you can only observe VFO-B being tuned approximately +/- 24 kHz from VFO-A's frequency. If you tune VFO-A, which tunes the spectrum display and the MultiRX VFO-B goes beyond the +/- 24 kHz limit, MultiRX will be turned off.

There is no way on the FLEX-1500 to place VFO-A on one side of the display and the MultiRX VFO-B on the other.  To do that, you need a FLEX-6000.