Are you following what’s happening in China?

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

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.

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

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 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

Testing

The kpa 1500 requires 20 amps. Where do the other 40 amps go?

Fine, but I was responding to Colon.

There is no carrier in the ATSC signal, just a low level pilot.

I think you are being too harsh. The Elecraft website is mostly broken thanks to the pandemic and the wildfires. Give them a break, they’re doing what they can. The Elecraft is part of QTH. Net and ea

Martin You are being too harsh. Elecraft is dealing with the double shot of both the virus and the aftermath of the wildfires. As someone already said, that part was likely shipped by someone filling

I disagree I’ve lived in the EU, Canada and the US. For many years i ran a business in Canada that was heavily involved with import/export and know my way around customs quite well.I have imported ite

context?

agreed

I was management at CBS corporate in NYC. I never saw such a questionaire. It appears you were a technician under IBEW contract so I don’t know what they required. I did become a member of BCARS (broa

You’re over thinking this. Audio is rarely matched except for possibly long lines. The 10 K impedance of the amp will simply respond to the voltage of the K3(4) audio.

This a portion of comments found on another list on an unrelated topic—- “Icom is still selling the IC718, and they do not support it with parts or repair. Kenwood apparently does not even supply part

To what? Context?

Please quote some of the thread so there is context. Thanks