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Harmonics in IF mixer , with high power interference demands better RF for 10.7MHz IF filters . Examine the carrier frequency difference with LO. You may find the intermod (IM) products cause capture …

Both are constant carrier angle modulation schemes with exponential side bands that must be attenuated to fit in the required BW to prevent adjacent channel interference in expected capture range of s …

It is not obvious, but there must be an automatic setting. My guess is to set 10 for Seek mode. There is no description of how SNR is detected but it is probably not calibrated in dB exactly but the …

No That is supply current, efficiency will be < 60% and is measured by ratio with Pout. Try different loads (50~300) such as 50 Ohm load, non-inductive, rated 5W with very short leads and measur …

Your specification would result in broadband thermal noise, because by definition if the Rx cannot lock onto carrier AND squelch is disabled if no carrier, then all you would hear is thermal noise.

in addition to the fine answers, it is important to understand a wire is not just a resistor, in fact it is mainly an inductor depending on length to diameter of wire ratio often about 0.5 to 1nh per …

It must have very fast X ns risetime and could be switching above AM radio rates of 1.4 MHz but with harmonics reaching 100 MHz. Suggestion add 10 nF Y caps across L-N of fan. add 100 MHz rated ferri …

AM now supports Quadrature Stereo AM but still fits within 10Khz channel spacing with some guardband. FM cannot fit into the AM band , wwhile AM is even used in the ISM band at 928MHz with 6kHz chann …

This is not how to create a 1MHz FM generator but shows what works on a simulator using a 1kHz 1us pulse to energize the inductor with < 100mA with a Q of 2000 in theory. (10M/500) In practise, you …

It may be possible with a controlled impedance shielded twisted pair (120 Ohm STP) with balun using FM with a wide deviation ratio to improve SNR by the ratio of deviation to bandwidth above the thres …

Mixing 22kHz with 24kHz should result in a difference of 2 kHz as you see. Why do you expect DC? This is only possible using a Phase/Frequency Detector using logic called a Type II mixer.

I realize most of this will fly over your level of understanding, but if you read about LC oscillators then come back to read this, it can make more sense. First understand , how do Varicaps or “Varac …

Above f, C conducts more; below L conducts more phase leans from 180 away from the one with less conduction only when R is in loop= DCR or ESR or R Reactive elements always have 90 across them but at …