On 4/20/2024 9:18 AM, Joe Subich, W4TV wrote:
Similarly, to the AM broadcaster, "Broadband" simply means sufficient bandwidth to keep the transmitter happy and avoid distortion of an IBOC digital signal. That is far more narrow than even a "50 KHz under 1.5:1" for amateurs on 160.
Great points, Joe. I grew up a mile or two from a 5kW DA-N on 930 kHz, and as a college student worked at the station. One summer, I helped the chief engineer silver-solder new radials to new ground screens for the 4-tower array. The bandwidth issue jumped out at me as I drove through one of their nulls -- where the carrier cancelled, the sidebands didn't.
73, Jim K9YC _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
