2 ms·
Does a VHF tetrode not have a lower bound on its operating frequency when operating at such a high power? Even if just an impedance mismatch at its terminals?
by emchammer 2y ago
Does a VHF tetrode not have a lower bound on its operating frequency when operating at such a high power? Even if just an impedance mismatch at its terminals?
If I had to choose between the two for broadcast radio, keeping longwave radio transmissions makes more sense than AM (MW) radio. Keep FM (VHF) for local radio and lose the IBOC/DAB.
- hilbert42 2y agoCan do, but Z is usually just a minor matching exercise. At those low frequencies it's not usually a problem. VHF tetrodes even make good high powered audio amplifiers. I've even seen them used in ultrasonics (~50kHz) when older original tubes weren't available. Re second point, best options depend where you are geographically in the world, mix of services, etc. There's lots of different mixes/requirements.