[Elecraft] AM Broadcasting

[Dave Cole (NK7Z)]

I worked in TV where we had one tower, and one antenna, and just 
downtilt to worry about...

73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
Award Manager, 30MDG Grid Contest
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 12/21/18 2:19 PM, Bob McGraw K4TAX wrote:
> WOW!  12 towers.   I've only worked with a 3 tower directional array 
> that was switched between 2 frequencies and 4 different patterns.   A 
> small 100 KW shortwave transmitter and it too switched between the 2 
> frequencies.    Flip the switch and hope that the TX quenched as it 
> should, all switched as they should and came back up at 100 KW.   A bit 
> u-nerving when all of this happened.   I do recall once there was a 
> flash over in a tower switching unit which set the sagebrush on fire. 
> Made for an exciting afternoon.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> 
> On 12/21/2018 10:26 AM, Raymond wrote:
>> The Phasor used by directional stations is not a matching unit. It is 
>> a power divider phasing unit as each tower gets different current, 
>> phase to develop the pattern. Each individual tower has an ATU.  The 
>> phasor for a 12 tower station is fascinating as is the pattern.
>> Ray
>> W8LYJ
>>
>> Sent from my iPhone
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> 
> 
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