Antonio Vernucci wrote:
Roger,

I carefully re-checked the manual and I found the text you mentioned.

It literally reads: "The 1st conversion oscillator operates at a frequency higher than the incoming signal by an amount equal to the first intermediate frequency of 1650 kc/s"

That sentence clearly states that the beat frequency is higher than that of the incoming RF signal but, in my opinion, it does not absolutely also imply that the beat frequency corresponds to the fundamental oscillator frequency.

In other words, it is true that the beat frequency is always higher than the incoming RF signal, but the beat frequency could be obtained by taking the second harmonic of the oscillator frequency. And the sentence would still be meaningful.

I am taking that interpretation as I am 101% sure that, on 10, 15 and 20 meters, the beat frequency is twice the fundamental oscillator frequency.

73

Tony, I0JX


Hi Tony....

The "beat" frequency is generally the difference (IF) frequency. In a
receiver the "beat frequency oscillator (BFO) is used to generate a
"beat" frequency in the audio range for CW reception. My copy of the
manual clearly states that the OSCILLATOR frequency is HIGHER than
the signal frequency on ALL bands.

73, Roger

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