You may be, per se, "legal" since the rules do not have a specific "xxxx Hz maximum audio" rule. However, you are an *INCONSIDERATE OPERATOR* and a *LID* as defined by no less an authority than W3BE w

Sorry Joe, I am 100 % Legal, And I want Better Audio ! Thanks All……… WA6VAB Ray - - 1961

Make that 3 KHz maximum modulating frequency. Anything over that is absolutely not needed for "communication quality audio" which is the Commission's standard for the amateur service. As W3BE has repe

Right. Square-wave testing is a measure of transient response, and of distortion that produces both harmonics and sidebands. Bandwidth and modulation is controlled by the audio processor that feeds th

Jim……. It should not bother You. AM has been around…… before you and I got our License…. Right. Just follow common Curtesy of not Run over 5 KC Modulation, we can All use our bands. My K3 Has USSB is

Why AM? More interesting conversation. Why k3? 8kc instead of 6. Later maybe a non issue. 73 Mike R 7! Absolutely Awesome

Threads that some might call misinformed often prove more informative than would a direct succinct answer. 73, Kent K9ZTV

Excellent observations. 73, Jim K9YC

Interesting, but this discussion was regarding an SWL issue. Read the full thread before making misinformed comments.

I should probably keep my thoughts to myself, but this interest in AM with a K3 on the ham bands bothers me for a number of reasons. By background, I am retired from the broadcast industry, most of wh

Yea, but one cant hear the iron talk back to them. 73 Bob, K4TAX

Bottles are no longer the way to go. A good solid state class E PA and a PWM modulator will do the job in the 21st century.

If one intends to work AM, then get a real AM transmitter. That's a couple of big bottles modulated by a couple of big bottles. Such as a pair of 4-400's modulated with a pair of 4-400's and about 3KV

That’s not exactly how it works. Transmitters by themselves go out 20 KHz or more. An important characteristic is good squarewave response in transmitters which requires response into harmonic frequen

Right. I used to think that, since the AM broadcast channel spacing is 10 kHz, transmitters must limit their audio bandwidth to 5 kHz to keep the sidebands within a 10 kHz channel. However, FCC rules

A good rule of thumb is that the highest frequency multiplied by the lowest frequency is equal to 500,000. Examples: 33Hz to 15KHz, 50Hz to 10KHz, 100Hz to 5 KHz, 200Hz to 2.5KHz, etc. this gives a ba

The "warmth" will be found in how you handle audio between 100 Hz and 4500 Hz. Frequencies above 5 KHz (even above 3 KHz) will be more important to the "brightness" but will mostly get lost in any QRN

You can try synchronous AM (AM-S), one sideband locked to the carrier. Toggle the mode to AM, hold ALT and the mode will display AM-S. You change change sidebands by turning SHIFT left or right. Easy

The FCC spectrum mask for AM requires 25 db attenuation at 10.2 kilohertz. In practice virtually every station complies with the NRSC curve which boosts high audio frequencies up until a sharp cut off

I’m dipping my toe in AM again with a fm filter on the way. I’ve been using a 590, but when I was interested before I was told the fm filter was the way to go. The thing is with me, it’s not the mode